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b6d061b7 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
16 | /* $Id$ */ | |
17 | ||
a42548b0 | 18 | |
19 | // Implementation of the class to calculate the parton energy loss | |
20 | // Based on the "BDMPS" quenching weights by C.A.Salgado and U.A.Wiedemann | |
21 | // References: | |
22 | // C.A.Salgado and U.A.Wiedemann, Phys.Rev.D68 (2003) 014008 [hep-ph/0302184] | |
23 | // A.Dainese, Eur.Phys.J.C, in press, [nucl-ex/0312005] | |
b6d061b7 | 24 | // |
7a76a12e | 25 | // |
b6d061b7 | 26 | // Origin: C. Loizides constantinos.loizides@cern.ch |
27 | // A. Dainese andrea.dainese@pd.infn.it | |
7a76a12e | 28 | // |
7258586f | 29 | //=================== Added by C. Loizides 27/03/04 =========================== |
30 | // | |
a42548b0 | 31 | // Added support for k-Quenching, where wc=I1*k and R=2I1^2/I0*k |
32 | // (see the AliFastGlauber class for definition of I0/I1) | |
7258586f | 33 | //----------------------------------------------------------------------------- |
b6d061b7 | 34 | |
35 | #include <Riostream.h> | |
7258586f | 36 | #include <TF1.h> |
b6d061b7 | 37 | #include <TH1F.h> |
38 | #include <TH2F.h> | |
39 | #include <TCanvas.h> | |
40 | #include <TGraph.h> | |
41 | #include <TROOT.h> | |
42 | #include <TSystem.h> | |
9453afb9 | 43 | #include <TString.h> |
b6d061b7 | 44 | #include <TLegend.h> |
45 | #include "AliQuenchingWeights.h" | |
46 | ||
47 | ClassImp(AliQuenchingWeights) | |
48 | ||
49 | // conversion from fm to GeV^-1: 1 fm = fmGeV GeV^-1 | |
7a76a12e | 50 | const Double_t AliQuenchingWeights::fgkConvFmToInvGeV = 1./0.197; |
b6d061b7 | 51 | |
52 | // maximum value of R | |
7a76a12e | 53 | const Double_t AliQuenchingWeights::fgkRMax = 1.e6; |
b6d061b7 | 54 | |
7258586f | 55 | // hist binning |
2552c51a | 56 | const Int_t AliQuenchingWeights::fgkBins = 1300; |
57 | const Double_t AliQuenchingWeights::fgkMaxBin = 1.3; | |
7258586f | 58 | |
b6d061b7 | 59 | // counter for histogram labels |
7a76a12e | 60 | Int_t AliQuenchingWeights::fgCounter = 0; |
b6d061b7 | 61 | |
7258586f | 62 | |
b6d061b7 | 63 | AliQuenchingWeights::AliQuenchingWeights() |
e6e76983 | 64 | : TObject(), |
65 | fInstanceNumber(fgCounter++), | |
66 | fMultSoft(kTRUE), | |
67 | fECMethod(kDefault), | |
68 | fQTransport(1.), | |
69 | fMu(1.), | |
70 | fK(4.e5), | |
71 | fLengthMax(20), | |
72 | fLengthMaxOld(0), | |
73 | fHistos(0), | |
74 | fHisto(0), | |
75 | fTablesLoaded(kFALSE) | |
b6d061b7 | 76 | { |
7a76a12e | 77 | //default constructor |
9453afb9 | 78 | fHisto = new TH1F(Form("hhistoqw_%d",fInstanceNumber),"",fgkBins,0.,fgkMaxBin); |
2552c51a | 79 | for(Int_t bin=1;bin<=fgkBins;bin++) |
7258586f | 80 | fHisto->SetBinContent(bin,0.); |
b6d061b7 | 81 | } |
82 | ||
83 | AliQuenchingWeights::AliQuenchingWeights(const AliQuenchingWeights& a) | |
e6e76983 | 84 | : TObject(), |
85 | fInstanceNumber(fgCounter++), | |
86 | fMultSoft(kTRUE), | |
87 | fECMethod(kDefault), | |
88 | fQTransport(1.), | |
89 | fMu(1.), | |
90 | fK(4.e5), | |
91 | fLengthMax(20), | |
92 | fLengthMaxOld(0), | |
93 | fHistos(0), | |
94 | fHisto(0), | |
95 | fTablesLoaded(kFALSE) | |
b6d061b7 | 96 | { |
7258586f | 97 | // copy constructor |
7a76a12e | 98 | |
b6d061b7 | 99 | fTablesLoaded=kFALSE; |
100 | fHistos=0; | |
101 | fLengthMaxOld=0; | |
102 | fMultSoft=a.GetMultSoft();; | |
103 | fMu=a.GetMu(); | |
7258586f | 104 | fK=a.GetK(); |
b6d061b7 | 105 | fQTransport=a.GetQTransport(); |
106 | fECMethod=(kECMethod)a.GetECMethod(); | |
107 | fLengthMax=a.GetLengthMax(); | |
7a76a12e | 108 | fInstanceNumber=fgCounter++; |
cabdfc37 | 109 | Char_t name[100]; |
110 | sprintf(name,"hhistoqw_%d",fInstanceNumber); | |
111 | fHisto = new TH1F(name,"",fgkBins,0.,fgkMaxBin); | |
2552c51a | 112 | for(Int_t bin=1;bin<=fgkBins;bin++) |
7258586f | 113 | fHisto->SetBinContent(bin,0.); |
114 | ||
b6d061b7 | 115 | //Missing in the class is the pathname |
116 | //to the tables, can be added if needed | |
117 | } | |
118 | ||
119 | AliQuenchingWeights::~AliQuenchingWeights() | |
120 | { | |
121 | Reset(); | |
7258586f | 122 | delete fHisto; |
b6d061b7 | 123 | } |
124 | ||
125 | void AliQuenchingWeights::Reset() | |
126 | { | |
7a76a12e | 127 | //reset tables if there were used |
128 | ||
b6d061b7 | 129 | if(!fHistos) return; |
9d851d20 | 130 | for(Int_t l=0;l<4*fLengthMaxOld;l++){ |
b6d061b7 | 131 | delete fHistos[0][l]; |
132 | delete fHistos[1][l]; | |
133 | } | |
134 | delete[] fHistos; | |
135 | fHistos=0; | |
136 | fLengthMaxOld=0; | |
137 | } | |
138 | ||
139 | void AliQuenchingWeights::SetECMethod(kECMethod type) | |
140 | { | |
7a76a12e | 141 | //set energy constraint method |
142 | ||
b6d061b7 | 143 | fECMethod=type; |
144 | if(fECMethod==kDefault) | |
145 | Info("SetECMethod","Energy Constraint Method set to DEFAULT:\nIf (sampled energy loss > parton energy) then sampled energy loss = parton energy."); | |
b677de56 | 146 | else if(fECMethod==kReweight) |
b6d061b7 | 147 | Info("SetECMethod","Energy Constraint Method set to REWEIGHT:\nRequire sampled energy loss <= parton energy."); |
b677de56 | 148 | else Info("SetECMethod","Energy Constraint Method set to REWEIGHTCONT:\nRequire sampled energy loss <= parton energy (only implemented for FAST method."); |
b6d061b7 | 149 | } |
150 | ||
151 | Int_t AliQuenchingWeights::InitMult(const Char_t *contall,const Char_t *discall) | |
152 | { | |
153 | // read in tables for multiple scattering approximation | |
154 | // path to continuum and to discrete part | |
155 | ||
156 | fTablesLoaded = kFALSE; | |
157 | fMultSoft=kTRUE; | |
158 | ||
cabdfc37 | 159 | Char_t fname[1024]; |
160 | sprintf(fname,"%s",gSystem->ExpandPathName(contall)); | |
bb545331 | 161 | //PH ifstream fincont(fname); |
cabdfc37 | 162 | fstream fincont(fname,ios::in); |
bb545331 | 163 | #if defined(__HP_aCC) || defined(__DECCXX) |
164 | if(!fincont.rdbuf()->is_open()) return -1; | |
165 | #else | |
b6d061b7 | 166 | if(!fincont.is_open()) return -1; |
bb545331 | 167 | #endif |
b6d061b7 | 168 | |
169 | Int_t nn=0; //quarks | |
170 | while(fincont>>fxx[nn]>>fcaq[0][nn]>>fcaq[1][nn]>>fcaq[2][nn]>>fcaq[3][nn]>> | |
171 | fcaq[4][nn]>>fcaq[5][nn]>>fcaq[6][nn]>>fcaq[7][nn]>>fcaq[8][nn]>> | |
7a76a12e | 172 | fcaq[9][nn]>>fcaq[10][nn]>>fcaq[11][nn]>>fcaq[12][nn]>>fcaq[13][nn]>> |
173 | fcaq[14][nn]>>fcaq[15][nn]>>fcaq[16][nn]>>fcaq[17][nn]>>fcaq[18][nn]>> | |
174 | fcaq[19][nn]>>fcaq[20][nn]>>fcaq[21][nn]>>fcaq[22][nn]>>fcaq[23][nn]>> | |
175 | fcaq[24][nn]>>fcaq[25][nn]>>fcaq[26][nn]>>fcaq[27][nn]>>fcaq[28][nn]>> | |
176 | fcaq[29][nn]>>fcaq[30][nn]>>fcaq[31][nn]>>fcaq[32][nn]>>fcaq[33][nn]) | |
b6d061b7 | 177 | { |
178 | nn++; | |
179 | if(nn==261) break; | |
180 | } | |
181 | ||
182 | nn=0; //gluons | |
183 | while(fincont>>fxxg[nn]>>fcag[0][nn]>>fcag[1][nn]>>fcag[2][nn]>>fcag[3][nn]>> | |
184 | fcag[4][nn]>>fcag[5][nn]>>fcag[6][nn]>>fcag[7][nn]>>fcag[8][nn]>> | |
7a76a12e | 185 | fcag[9][nn]>>fcag[10][nn]>>fcag[11][nn]>>fcag[12][nn]>>fcag[13][nn]>> |
186 | fcag[14][nn]>>fcag[15][nn]>>fcag[16][nn]>>fcag[17][nn]>>fcag[18][nn]>> | |
187 | fcag[19][nn]>>fcag[20][nn]>>fcag[21][nn]>>fcag[22][nn]>>fcag[23][nn]>> | |
188 | fcag[24][nn]>>fcag[25][nn]>>fcag[26][nn]>>fcag[27][nn]>>fcag[28][nn]>> | |
189 | fcag[29][nn]>>fcag[30][nn]>>fcag[31][nn]>>fcag[32][nn]>>fcag[33][nn]) | |
190 | { | |
b6d061b7 | 191 | nn++; |
192 | if(nn==261) break; | |
193 | } | |
194 | fincont.close(); | |
195 | ||
cabdfc37 | 196 | sprintf(fname,"%s",gSystem->ExpandPathName(discall)); |
bb545331 | 197 | //PH ifstream findisc(fname); |
cabdfc37 | 198 | fstream findisc(fname,ios::in); |
bb545331 | 199 | #if defined(__HP_aCC) || defined(__DECCXX) |
200 | if(!findisc.rdbuf()->is_open()) return -1; | |
201 | #else | |
b6d061b7 | 202 | if(!findisc.is_open()) return -1; |
bb545331 | 203 | #endif |
b6d061b7 | 204 | |
205 | nn=0; //quarks | |
206 | while(findisc>>frrr[nn]>>fdaq[nn]) { | |
207 | nn++; | |
7a76a12e | 208 | if(nn==34) break; |
b6d061b7 | 209 | } |
210 | nn=0; //gluons | |
211 | while(findisc>>frrrg[nn]>>fdag[nn]) { | |
212 | nn++; | |
7a76a12e | 213 | if(nn==34) break; |
b6d061b7 | 214 | } |
215 | findisc.close(); | |
216 | fTablesLoaded = kTRUE; | |
217 | return 0; | |
218 | } | |
219 | ||
220 | /* | |
221 | C*************************************************************************** | |
222 | C Quenching Weights for Multiple Soft Scattering | |
223 | C February 10, 2003 | |
224 | C | |
225 | C Refs: | |
226 | C | |
227 | C Carlos A. Salgado and Urs A. Wiedemann, hep-ph/0302184. | |
228 | C | |
229 | C Carlos A. Salgado and Urs A. Wiedemann Phys.Rev.Lett.89:092303,2002. | |
230 | C | |
231 | C | |
232 | C This package contains quenching weights for gluon radiation in the | |
233 | C multiple soft scattering approximation. | |
234 | C | |
235 | C swqmult returns the quenching weight for a quark (ipart=1) or | |
236 | C a gluon (ipart=2) traversing a medium with transport coeficient q and | |
237 | C length L. The input values are rrrr=0.5*q*L^3 and xxxx=w/wc, where | |
238 | C wc=0.5*q*L^2 and w is the energy radiated. The output values are | |
239 | C the continuous and discrete (prefactor of the delta function) parts | |
240 | C of the quenching weights. | |
241 | C | |
242 | C In order to use this routine, the files cont.all and disc.all need to be | |
243 | C in the working directory. | |
244 | C | |
245 | C An initialization of the tables is needed by doing call initmult before | |
246 | C using swqmult. | |
247 | C | |
248 | C Please, send us any comment: | |
249 | C | |
7a76a12e | 250 | C urs.wiedemann@cern.ch |
251 | C carlos.salgado@cern.ch | |
252 | C | |
253 | C | |
b6d061b7 | 254 | C------------------------------------------------------------------- |
255 | ||
256 | SUBROUTINE swqmult(ipart,rrrr,xxxx,continuous,discrete) | |
257 | * | |
7a76a12e | 258 | REAL*8 xx(400), daq(34), caq(34,261), rrr(34) |
b6d061b7 | 259 | COMMON /dataqua/ xx, daq, caq, rrr |
260 | * | |
7a76a12e | 261 | REAL*8 xxg(400), dag(34), cag(34,261), rrrg(34) |
b6d061b7 | 262 | COMMON /dataglu/ xxg, dag, cag, rrrg |
263 | ||
264 | REAL*8 rrrr,xxxx, continuous, discrete | |
265 | REAL*8 rrin, xxin | |
266 | INTEGER nrlow, nrhigh, nxlow, nxhigh | |
267 | REAL*8 rrhigh, rrlow, rfraclow, rfrachigh | |
268 | REAL*8 xfraclow, xfrachigh | |
269 | REAL*8 clow, chigh | |
270 | * | |
7a76a12e | 271 | |
272 | continuous=0.d0 | |
273 | discrete=0.d0 | |
274 | ||
b6d061b7 | 275 | rrin = rrrr |
276 | xxin = xxxx | |
277 | * | |
7a76a12e | 278 | do 666, nr=1,34 |
b6d061b7 | 279 | if (rrin.lt.rrr(nr)) then |
280 | rrhigh = rrr(nr) | |
281 | else | |
282 | rrhigh = rrr(nr-1) | |
283 | rrlow = rrr(nr) | |
284 | nrlow = nr | |
285 | nrhigh = nr-1 | |
286 | goto 665 | |
287 | endif | |
288 | 666 enddo | |
289 | 665 continue | |
290 | * | |
291 | rfraclow = (rrhigh-rrin)/(rrhigh-rrlow) | |
292 | rfrachigh = (rrin-rrlow)/(rrhigh-rrlow) | |
7a76a12e | 293 | if (rrin.gt.10000d0) then |
294 | rfraclow = dlog(rrhigh/rrin)/dlog(rrhigh/rrlow) | |
295 | rfrachigh = dlog(rrin/rrlow)/dlog(rrhigh/rrlow) | |
296 | endif | |
297 | * | |
298 | if (ipart.eq.1.and.rrin.ge.rrr(1)) then | |
299 | nrlow=1 | |
300 | nrhigh=1 | |
301 | rfraclow=1 | |
302 | rfrachigh=0 | |
303 | endif | |
304 | ||
305 | if (ipart.ne.1.and.rrin.ge.rrrg(1)) then | |
306 | nrlow=1 | |
307 | nrhigh=1 | |
308 | rfraclow=1 | |
309 | rfrachigh=0 | |
310 | endif | |
311 | ||
312 | if (xxxx.ge.xx(261)) go to 245 | |
313 | ||
314 | nxlow = int(xxin/0.01) + 1 | |
315 | nxhigh = nxlow + 1 | |
316 | xfraclow = (xx(nxhigh)-xxin)/0.01 | |
317 | xfrachigh = (xxin - xx(nxlow))/0.01 | |
b6d061b7 | 318 | * |
319 | if(ipart.eq.1) then | |
320 | clow = xfraclow*caq(nrlow,nxlow)+xfrachigh*caq(nrlow,nxhigh) | |
321 | chigh = xfraclow*caq(nrhigh,nxlow)+xfrachigh*caq(nrhigh,nxhigh) | |
322 | else | |
323 | clow = xfraclow*cag(nrlow,nxlow)+xfrachigh*cag(nrlow,nxhigh) | |
324 | chigh = xfraclow*cag(nrhigh,nxlow)+xfrachigh*cag(nrhigh,nxhigh) | |
325 | endif | |
326 | ||
327 | continuous = rfraclow*clow + rfrachigh*chigh | |
328 | ||
7a76a12e | 329 | 245 continue |
330 | ||
b6d061b7 | 331 | if(ipart.eq.1) then |
332 | discrete = rfraclow*daq(nrlow) + rfrachigh*daq(nrhigh) | |
333 | else | |
334 | discrete = rfraclow*dag(nrlow) + rfrachigh*dag(nrhigh) | |
335 | endif | |
336 | * | |
337 | END | |
338 | ||
339 | subroutine initmult | |
7a76a12e | 340 | REAL*8 xxq(400), daq(34), caq(34,261), rrr(34) |
b6d061b7 | 341 | COMMON /dataqua/ xxq, daq, caq, rrr |
342 | * | |
7a76a12e | 343 | REAL*8 xxg(400), dag(34), cag(34,261), rrrg(34) |
b6d061b7 | 344 | COMMON /dataglu/ xxg, dag, cag, rrrg |
345 | * | |
7a76a12e | 346 | OPEN(UNIT=20,FILE='contnew.all',STATUS='OLD',ERR=90) |
b6d061b7 | 347 | do 110 nn=1,261 |
348 | read (20,*) xxq(nn), caq(1,nn), caq(2,nn), caq(3,nn), | |
349 | + caq(4,nn), caq(5,nn), caq(6,nn), caq(7,nn), caq(8,nn), | |
350 | + caq(9,nn), caq(10,nn), caq(11,nn), caq(12,nn), | |
351 | + caq(13,nn), | |
352 | + caq(14,nn), caq(15,nn), caq(16,nn), caq(17,nn), | |
353 | + caq(18,nn), | |
354 | + caq(19,nn), caq(20,nn), caq(21,nn), caq(22,nn), | |
355 | + caq(23,nn), | |
356 | + caq(24,nn), caq(25,nn), caq(26,nn), caq(27,nn), | |
357 | + caq(28,nn), | |
7a76a12e | 358 | + caq(29,nn), caq(30,nn), caq(31,nn), caq(32,nn), |
359 | + caq(33,nn), caq(34,nn) | |
b6d061b7 | 360 | 110 continue |
361 | do 111 nn=1,261 | |
362 | read (20,*) xxg(nn), cag(1,nn), cag(2,nn), cag(3,nn), | |
363 | + cag(4,nn), cag(5,nn), cag(6,nn), cag(7,nn), cag(8,nn), | |
364 | + cag(9,nn), cag(10,nn), cag(11,nn), cag(12,nn), | |
365 | + cag(13,nn), | |
366 | + cag(14,nn), cag(15,nn), cag(16,nn), cag(17,nn), | |
367 | + cag(18,nn), | |
368 | + cag(19,nn), cag(20,nn), cag(21,nn), cag(22,nn), | |
369 | + cag(23,nn), | |
370 | + cag(24,nn), cag(25,nn), cag(26,nn), cag(27,nn), | |
371 | + cag(28,nn), | |
7a76a12e | 372 | + cag(29,nn), cag(30,nn), cag(31,nn), cag(32,nn), |
373 | + cag(33,nn), cag(34,nn) | |
b6d061b7 | 374 | 111 continue |
375 | close(20) | |
376 | * | |
7a76a12e | 377 | OPEN(UNIT=21,FILE='discnew.all',STATUS='OLD',ERR=91) |
378 | do 112 nn=1,34 | |
b6d061b7 | 379 | read (21,*) rrr(nn), daq(nn) |
380 | 112 continue | |
7a76a12e | 381 | do 113 nn=1,34 |
b6d061b7 | 382 | read (21,*) rrrg(nn), dag(nn) |
383 | 113 continue | |
384 | close(21) | |
385 | * | |
386 | goto 888 | |
387 | 90 PRINT*, 'input - output error' | |
388 | 91 PRINT*, 'input - output error #2' | |
389 | 888 continue | |
390 | ||
391 | end | |
392 | ||
7a76a12e | 393 | |
b6d061b7 | 394 | ======================================================================= |
395 | ||
396 | Adapted to ROOT macro by A. Dainese - 13/07/2003 | |
7a76a12e | 397 | Ported to class by C. Loizides - 12/02/2004 |
398 | New version for extended R values added - 06/03/2004 | |
b6d061b7 | 399 | */ |
400 | ||
401 | Int_t AliQuenchingWeights::CalcMult(Int_t ipart, Double_t rrrr,Double_t xxxx, | |
402 | Double_t &continuous,Double_t &discrete) const | |
403 | { | |
404 | // Calculate Multiple Scattering approx. | |
405 | // weights for given parton type, | |
406 | // rrrr=0.5*q*L^3 and xxxx=w/wc, wc=0.5*q*L^2 | |
407 | ||
7a76a12e | 408 | //set result to zero |
409 | continuous=0.; | |
410 | discrete=0.; | |
411 | ||
7258586f | 412 | //read-in data before first call |
b6d061b7 | 413 | if(!fTablesLoaded){ |
414 | Error("CalcMult","Tables are not loaded."); | |
415 | return -1; | |
416 | } | |
417 | if(!fMultSoft){ | |
418 | Error("CalcMult","Tables are not loaded for Multiple Scattering."); | |
419 | return -1; | |
420 | } | |
421 | ||
422 | Double_t rrin = rrrr; | |
423 | Double_t xxin = xxxx; | |
424 | ||
7a76a12e | 425 | if(xxin>fxx[260]) return -1; |
b6d061b7 | 426 | Int_t nxlow = (Int_t)(xxin/0.01) + 1; |
427 | Int_t nxhigh = nxlow + 1; | |
428 | Double_t xfraclow = (fxx[nxhigh-1]-xxin)/0.01; | |
429 | Double_t xfrachigh = (xxin - fxx[nxlow-1])/0.01; | |
430 | ||
431 | //why this? | |
7a76a12e | 432 | if(rrin<=frrr[33]) rrin = 1.05*frrr[33]; // AD |
b6d061b7 | 433 | if(rrin>=frrr[0]) rrin = 0.95*frrr[0]; // AD |
434 | ||
435 | Int_t nrlow=0,nrhigh=0; | |
436 | Double_t rrhigh=0,rrlow=0; | |
7a76a12e | 437 | for(Int_t nr=1; nr<=34; nr++) { |
b6d061b7 | 438 | if(rrin<frrr[nr-1]) { |
439 | rrhigh = frrr[nr-1]; | |
440 | } else { | |
441 | rrhigh = frrr[nr-1-1]; | |
442 | rrlow = frrr[nr-1]; | |
443 | nrlow = nr; | |
444 | nrhigh = nr-1; | |
445 | break; | |
446 | } | |
447 | } | |
448 | ||
449 | rrin = rrrr; // AD | |
450 | ||
451 | Double_t rfraclow = (rrhigh-rrin)/(rrhigh-rrlow); | |
452 | Double_t rfrachigh = (rrin-rrlow)/(rrhigh-rrlow); | |
453 | ||
7a76a12e | 454 | if(rrin>1.e4){ |
455 | rfraclow = TMath::Log2(rrhigh/rrin)/TMath::Log2(rrhigh/rrlow); | |
456 | rfrachigh = TMath::Log2(rrin/rrlow)/TMath::Log2(rrhigh/rrlow); | |
457 | } | |
458 | if((ipart==1) && (rrin>=frrr[0])) | |
459 | { | |
460 | nrlow=1; | |
461 | nrhigh=1; | |
462 | rfraclow=1.; | |
463 | rfrachigh=0.; | |
464 | } | |
465 | if((ipart==2) && (rrin>=frrrg[0])) | |
466 | { | |
467 | nrlow=1; | |
468 | nrhigh=1; | |
469 | rfraclow=1.; | |
470 | rfrachigh=0.; | |
471 | } | |
472 | ||
b6d061b7 | 473 | //printf("R = %f,\nRlow = %f, Rhigh = %f,\nRfraclow = %f, Rfrachigh = %f\n",rrin,rrlow,rrhigh,rfraclow,rfrachigh); // AD |
474 | ||
475 | Double_t clow=0,chigh=0; | |
476 | if(ipart==1) { | |
477 | clow = xfraclow*fcaq[nrlow-1][nxlow-1]+xfrachigh*fcaq[nrlow-1][nxhigh-1]; | |
478 | chigh = xfraclow*fcaq[nrhigh-1][nxlow-1]+xfrachigh*fcaq[nrhigh-1][nxhigh-1]; | |
479 | } else { | |
480 | clow = xfraclow*fcag[nrlow-1][nxlow-1]+xfrachigh*fcag[nrlow-1][nxhigh-1]; | |
481 | chigh = xfraclow*fcag[nrhigh-1][nxlow-1]+xfrachigh*fcag[nrhigh-1][nxhigh-1]; | |
482 | } | |
483 | ||
484 | continuous = rfraclow*clow + rfrachigh*chigh; | |
485 | //printf("rfraclow %f, clow %f, rfrachigh %f, chigh %f,\n continuous %f\n", | |
7258586f | 486 | //rfraclow,clow,rfrachigh,chigh,continuous); |
b6d061b7 | 487 | |
488 | if(ipart==1) { | |
489 | discrete = rfraclow*fdaq[nrlow-1] + rfrachigh*fdaq[nrhigh-1]; | |
490 | } else { | |
491 | discrete = rfraclow*fdag[nrlow-1] + rfrachigh*fdag[nrhigh-1]; | |
492 | } | |
493 | ||
494 | return 0; | |
495 | } | |
496 | ||
497 | Int_t AliQuenchingWeights::InitSingleHard(const Char_t *contall,const Char_t *discall) | |
498 | { | |
499 | // read in tables for Single Hard Approx. | |
500 | // path to continuum and to discrete part | |
501 | ||
502 | fTablesLoaded = kFALSE; | |
503 | fMultSoft=kFALSE; | |
504 | ||
cabdfc37 | 505 | Char_t fname[1024]; |
506 | sprintf(fname,"%s",gSystem->ExpandPathName(contall)); | |
bb545331 | 507 | //PH ifstream fincont(fname); |
cabdfc37 | 508 | fstream fincont(fname,ios::in); |
bb545331 | 509 | #if defined(__HP_aCC) || defined(__DECCXX) |
510 | if(!fincont.rdbuf()->is_open()) return -1; | |
511 | #else | |
b6d061b7 | 512 | if(!fincont.is_open()) return -1; |
bb545331 | 513 | #endif |
b6d061b7 | 514 | |
515 | Int_t nn=0; //quarks | |
516 | while(fincont>>fxx[nn]>>fcaq[0][nn]>>fcaq[1][nn]>>fcaq[2][nn]>>fcaq[3][nn]>> | |
517 | fcaq[4][nn]>>fcaq[5][nn]>>fcaq[6][nn]>>fcaq[7][nn]>>fcaq[8][nn]>> | |
518 | fcaq[9][nn]>>fcaq[10][nn]>>fcaq[11][nn]>>fcaq[12][nn]>> | |
519 | fcaq[13][nn]>> | |
520 | fcaq[14][nn]>>fcaq[15][nn]>>fcaq[16][nn]>>fcaq[17][nn]>> | |
521 | fcaq[18][nn]>> | |
522 | fcaq[19][nn]>>fcaq[20][nn]>>fcaq[21][nn]>>fcaq[22][nn]>> | |
523 | fcaq[23][nn]>> | |
524 | fcaq[24][nn]>>fcaq[25][nn]>>fcaq[26][nn]>>fcaq[27][nn]>> | |
525 | fcaq[28][nn]>> | |
526 | fcaq[29][nn]) | |
527 | { | |
528 | nn++; | |
529 | if(nn==261) break; | |
530 | } | |
531 | ||
532 | nn=0; //gluons | |
533 | while(fincont>>fxxg[nn]>>fcag[0][nn]>>fcag[1][nn]>>fcag[2][nn]>>fcag[3][nn]>> | |
534 | fcag[4][nn]>>fcag[5][nn]>>fcag[6][nn]>>fcag[7][nn]>>fcag[8][nn]>> | |
535 | fcag[9][nn]>>fcag[10][nn]>>fcag[11][nn]>>fcag[12][nn]>> | |
536 | fcag[13][nn]>> | |
537 | fcag[14][nn]>>fcag[15][nn]>>fcag[16][nn]>>fcag[17][nn]>> | |
538 | fcag[18][nn]>> | |
539 | fcag[19][nn]>>fcag[20][nn]>>fcag[21][nn]>>fcag[22][nn]>> | |
540 | fcag[23][nn]>> | |
541 | fcag[24][nn]>>fcag[25][nn]>>fcag[26][nn]>>fcag[27][nn]>> | |
542 | fcag[28][nn]>> | |
543 | fcag[29][nn]) { | |
544 | nn++; | |
545 | if(nn==261) break; | |
546 | } | |
547 | fincont.close(); | |
548 | ||
cabdfc37 | 549 | sprintf(fname,"%s",gSystem->ExpandPathName(discall)); |
bb545331 | 550 | //PH ifstream findisc(fname); |
cabdfc37 | 551 | fstream findisc(fname,ios::in); |
bb545331 | 552 | #if defined(__HP_aCC) || defined(__DECCXX) |
553 | if(!findisc.rdbuf()->is_open()) return -1; | |
554 | #else | |
b6d061b7 | 555 | if(!findisc.is_open()) return -1; |
bb545331 | 556 | #endif |
b6d061b7 | 557 | |
558 | nn=0; //quarks | |
559 | while(findisc>>frrr[nn]>>fdaq[nn]) { | |
560 | nn++; | |
561 | if(nn==30) break; | |
562 | } | |
563 | nn=0; //gluons | |
564 | while(findisc>>frrrg[nn]>>fdag[nn]) { | |
565 | nn++; | |
566 | if(nn==30) break; | |
567 | } | |
568 | findisc.close(); | |
569 | ||
570 | fTablesLoaded = kTRUE; | |
571 | return 0; | |
572 | } | |
573 | ||
574 | /* | |
575 | C*************************************************************************** | |
576 | C Quenching Weights for Single Hard Scattering | |
577 | C February 20, 2003 | |
578 | C | |
579 | C Refs: | |
580 | C | |
581 | C Carlos A. Salgado and Urs A. Wiedemann, hep-ph/0302184. | |
582 | C | |
583 | C Carlos A. Salgado and Urs A. Wiedemann Phys.Rev.Lett.89:092303,2002. | |
584 | C | |
585 | C | |
586 | C This package contains quenching weights for gluon radiation in the | |
587 | C single hard scattering approximation. | |
588 | C | |
589 | C swqlin returns the quenching weight for a quark (ipart=1) or | |
590 | C a gluon (ipart=2) traversing a medium with Debye screening mass mu and | |
591 | C length L. The input values are rrrr=0.5*mu^2*L^2 and xxxx=w/wc, where | |
592 | C wc=0.5*mu^2*L and w is the energy radiated. The output values are | |
593 | C the continuous and discrete (prefactor of the delta function) parts | |
594 | C of the quenching weights. | |
595 | C | |
596 | C In order to use this routine, the files contlin.all and disclin.all | |
597 | C need to be in the working directory. | |
598 | C | |
599 | C An initialization of the tables is needed by doing call initlin before | |
600 | C using swqlin. | |
601 | C | |
602 | C Please, send us any comment: | |
603 | C | |
604 | C urs.wiedemann@cern.ch | |
605 | C carlos.salgado@cern.ch | |
606 | C | |
607 | C | |
608 | C------------------------------------------------------------------- | |
609 | ||
610 | ||
611 | SUBROUTINE swqlin(ipart,rrrr,xxxx,continuous,discrete) | |
612 | * | |
613 | REAL*8 xx(400), dalq(30), calq(30,261), rrr(30) | |
614 | COMMON /datalinqua/ xx, dalq, calq, rrr | |
615 | * | |
616 | REAL*8 xxlg(400), dalg(30), calg(30,261), rrrlg(30) | |
617 | COMMON /datalinglu/ xxlg, dalg, calg, rrrlg | |
618 | ||
619 | REAL*8 rrrr,xxxx, continuous, discrete | |
620 | REAL*8 rrin, xxin | |
621 | INTEGER nrlow, nrhigh, nxlow, nxhigh | |
622 | REAL*8 rrhigh, rrlow, rfraclow, rfrachigh | |
623 | REAL*8 xfraclow, xfrachigh | |
624 | REAL*8 clow, chigh | |
625 | * | |
626 | rrin = rrrr | |
627 | xxin = xxxx | |
628 | * | |
629 | nxlow = int(xxin/0.038) + 1 | |
630 | nxhigh = nxlow + 1 | |
631 | xfraclow = (xx(nxhigh)-xxin)/0.038 | |
632 | xfrachigh = (xxin - xx(nxlow))/0.038 | |
633 | * | |
634 | do 666, nr=1,30 | |
635 | if (rrin.lt.rrr(nr)) then | |
636 | rrhigh = rrr(nr) | |
637 | else | |
638 | rrhigh = rrr(nr-1) | |
639 | rrlow = rrr(nr) | |
640 | nrlow = nr | |
641 | nrhigh = nr-1 | |
642 | goto 665 | |
643 | endif | |
644 | 666 enddo | |
645 | 665 continue | |
646 | * | |
647 | rfraclow = (rrhigh-rrin)/(rrhigh-rrlow) | |
648 | rfrachigh = (rrin-rrlow)/(rrhigh-rrlow) | |
649 | * | |
650 | if(ipart.eq.1) then | |
651 | clow = xfraclow*calq(nrlow,nxlow)+xfrachigh*calq(nrlow,nxhigh) | |
652 | chigh = xfraclow*calq(nrhigh,nxlow)+xfrachigh*calq(nrhigh,nxhigh) | |
653 | else | |
654 | clow = xfraclow*calg(nrlow,nxlow)+xfrachigh*calg(nrlow,nxhigh) | |
655 | chigh = xfraclow*calg(nrhigh,nxlow)+xfrachigh*calg(nrhigh,nxhigh) | |
656 | endif | |
657 | ||
658 | continuous = rfraclow*clow + rfrachigh*chigh | |
659 | ||
660 | if(ipart.eq.1) then | |
661 | discrete = rfraclow*dalq(nrlow) + rfrachigh*dalq(nrhigh) | |
662 | else | |
663 | discrete = rfraclow*dalg(nrlow) + rfrachigh*dalg(nrhigh) | |
664 | endif | |
665 | * | |
666 | END | |
667 | ||
668 | subroutine initlin | |
669 | REAL*8 xxlq(400), dalq(30), calq(30,261), rrr(30) | |
670 | COMMON /datalinqua/ xxlq, dalq, calq, rrr | |
671 | * | |
672 | REAL*8 xxlg(400), dalg(30), calg(30,261), rrrlg(30) | |
673 | COMMON /datalinglu/ xxlg, dalg, calg, rrrlg | |
674 | * | |
675 | OPEN(UNIT=20,FILE='contlin.all',STATUS='OLD',ERR=90) | |
676 | do 110 nn=1,261 | |
677 | read (20,*) xxlq(nn), calq(1,nn), calq(2,nn), calq(3,nn), | |
678 | + calq(4,nn), calq(5,nn), calq(6,nn), calq(7,nn), calq(8,nn), | |
679 | + calq(9,nn), calq(10,nn), calq(11,nn), calq(12,nn), | |
680 | + calq(13,nn), | |
681 | + calq(14,nn), calq(15,nn), calq(16,nn), calq(17,nn), | |
682 | + calq(18,nn), | |
683 | + calq(19,nn), calq(20,nn), calq(21,nn), calq(22,nn), | |
684 | + calq(23,nn), | |
685 | + calq(24,nn), calq(25,nn), calq(26,nn), calq(27,nn), | |
686 | + calq(28,nn), | |
687 | + calq(29,nn), calq(30,nn) | |
688 | 110 continue | |
689 | do 111 nn=1,261 | |
690 | read (20,*) xxlg(nn), calg(1,nn), calg(2,nn), calg(3,nn), | |
691 | + calg(4,nn), calg(5,nn), calg(6,nn), calg(7,nn), calg(8,nn), | |
692 | + calg(9,nn), calg(10,nn), calg(11,nn), calg(12,nn), | |
693 | + calg(13,nn), | |
694 | + calg(14,nn), calg(15,nn), calg(16,nn), calg(17,nn), | |
695 | + calg(18,nn), | |
696 | + calg(19,nn), calg(20,nn), calg(21,nn), calg(22,nn), | |
697 | + calg(23,nn), | |
698 | + calg(24,nn), calg(25,nn), calg(26,nn), calg(27,nn), | |
699 | + calg(28,nn), | |
700 | + calg(29,nn), calg(30,nn) | |
701 | 111 continue | |
702 | close(20) | |
703 | * | |
704 | OPEN(UNIT=21,FILE='disclin.all',STATUS='OLD',ERR=91) | |
705 | do 112 nn=1,30 | |
706 | read (21,*) rrr(nn), dalq(nn) | |
707 | 112 continue | |
708 | do 113 nn=1,30 | |
709 | read (21,*) rrrlg(nn), dalg(nn) | |
710 | 113 continue | |
711 | close(21) | |
712 | * | |
713 | goto 888 | |
714 | 90 PRINT*, 'input - output error' | |
715 | 91 PRINT*, 'input - output error #2' | |
716 | 888 continue | |
717 | ||
718 | end | |
719 | ||
720 | ======================================================================= | |
721 | ||
722 | Ported to class by C. Loizides - 17/02/2004 | |
723 | ||
724 | */ | |
725 | ||
726 | Int_t AliQuenchingWeights::CalcSingleHard(Int_t ipart, Double_t rrrr,Double_t xxxx, | |
727 | Double_t &continuous,Double_t &discrete) const | |
728 | { | |
729 | // calculate Single Hard approx. | |
730 | // weights for given parton type, | |
731 | // rrrr=0.5*mu^2*L^2 and xxxx=w/wc, wc=0.5*mu^2*L | |
732 | ||
733 | // read-in data before first call | |
734 | if(!fTablesLoaded){ | |
7258586f | 735 | Error("CalcSingleHard","Tables are not loaded."); |
b6d061b7 | 736 | return -1; |
737 | } | |
20169737 | 738 | if(fMultSoft){ |
7258586f | 739 | Error("CalcSingleHard","Tables are not loaded for Single Hard Scattering."); |
b6d061b7 | 740 | return -1; |
741 | } | |
742 | ||
743 | Double_t rrin = rrrr; | |
744 | Double_t xxin = xxxx; | |
745 | ||
746 | Int_t nxlow = (Int_t)(xxin/0.038) + 1; | |
747 | Int_t nxhigh = nxlow + 1; | |
748 | Double_t xfraclow = (fxx[nxhigh-1]-xxin)/0.038; | |
749 | Double_t xfrachigh = (xxin - fxx[nxlow-1])/0.038; | |
750 | ||
751 | //why this? | |
752 | if(rrin<=frrr[29]) rrin = 1.05*frrr[29]; // AD | |
753 | if(rrin>=frrr[0]) rrin = 0.95*frrr[0]; // AD | |
754 | ||
755 | Int_t nrlow=0,nrhigh=0; | |
756 | Double_t rrhigh=0,rrlow=0; | |
757 | for(Int_t nr=1; nr<=30; nr++) { | |
758 | if(rrin<frrr[nr-1]) { | |
759 | rrhigh = frrr[nr-1]; | |
760 | } else { | |
761 | rrhigh = frrr[nr-1-1]; | |
762 | rrlow = frrr[nr-1]; | |
763 | nrlow = nr; | |
764 | nrhigh = nr-1; | |
765 | break; | |
766 | } | |
767 | } | |
768 | ||
769 | rrin = rrrr; // AD | |
770 | ||
771 | Double_t rfraclow = (rrhigh-rrin)/(rrhigh-rrlow); | |
772 | Double_t rfrachigh = (rrin-rrlow)/(rrhigh-rrlow); | |
773 | ||
774 | //printf("R = %f,\nRlow = %f, Rhigh = %f,\nRfraclow = %f, Rfrachigh = %f\n",rrin,rrlow,rrhigh,rfraclow,rfrachigh); // AD | |
775 | ||
776 | Double_t clow=0,chigh=0; | |
777 | if(ipart==1) { | |
778 | clow = xfraclow*fcaq[nrlow-1][nxlow-1]+xfrachigh*fcaq[nrlow-1][nxhigh-1]; | |
779 | chigh = xfraclow*fcaq[nrhigh-1][nxlow-1]+xfrachigh*fcaq[nrhigh-1][nxhigh-1]; | |
780 | } else { | |
781 | clow = xfraclow*fcag[nrlow-1][nxlow-1]+xfrachigh*fcag[nrlow-1][nxhigh-1]; | |
782 | chigh = xfraclow*fcag[nrhigh-1][nxlow-1]+xfrachigh*fcag[nrhigh-1][nxhigh-1]; | |
783 | } | |
784 | ||
785 | continuous = rfraclow*clow + rfrachigh*chigh; | |
786 | //printf("rfraclow %f, clow %f, rfrachigh %f, chigh %f,\n continuous %f\n", | |
787 | // rfraclow,clow,rfrachigh,chigh,continuous); | |
788 | ||
789 | if(ipart==1) { | |
790 | discrete = rfraclow*fdaq[nrlow-1] + rfrachigh*fdaq[nrhigh-1]; | |
791 | } else { | |
792 | discrete = rfraclow*fdag[nrlow-1] + rfrachigh*fdag[nrhigh-1]; | |
793 | } | |
794 | ||
795 | return 0; | |
796 | } | |
797 | ||
798 | Int_t AliQuenchingWeights::CalcMult(Int_t ipart, | |
799 | Double_t w,Double_t qtransp,Double_t length, | |
800 | Double_t &continuous,Double_t &discrete) const | |
801 | { | |
7a76a12e | 802 | // Calculate Multiple Scattering approx. |
803 | // weights for given parton type, | |
804 | // rrrr=0.5*q*L^3 and xxxx=w/wc, wc=0.5*q*L^2 | |
805 | ||
b6d061b7 | 806 | Double_t wc=CalcWC(qtransp,length); |
807 | Double_t rrrr=CalcR(wc,length); | |
808 | Double_t xxxx=w/wc; | |
809 | return CalcMult(ipart,rrrr,xxxx,continuous,discrete); | |
810 | } | |
811 | ||
812 | Int_t AliQuenchingWeights::CalcSingleHard(Int_t ipart, | |
813 | Double_t w,Double_t mu,Double_t length, | |
814 | Double_t &continuous,Double_t &discrete) const | |
815 | { | |
7a76a12e | 816 | // calculate Single Hard approx. |
817 | // weights for given parton type, | |
818 | // rrrr=0.5*mu^2*L^2 and xxxx=w/wc, wc=0.5*mu^2*L | |
819 | ||
b6d061b7 | 820 | Double_t wcbar=CalcWCbar(mu,length); |
821 | Double_t rrrr=CalcR(wcbar,length); | |
822 | Double_t xxxx=w/wcbar; | |
823 | return CalcSingleHard(ipart,rrrr,xxxx,continuous,discrete); | |
824 | } | |
825 | ||
826 | Double_t AliQuenchingWeights::CalcR(Double_t wc, Double_t l) const | |
827 | { | |
a42548b0 | 828 | //calculate r value and |
7a76a12e | 829 | //check if it is less then maximum |
830 | ||
a42548b0 | 831 | Double_t r = wc*l*fgkConvFmToInvGeV; |
832 | if(r >= fgkRMax) { | |
833 | Warning("CalcR","Value of r = %.2f; should be less than %.2f", r, fgkRMax); | |
cc885e36 | 834 | return fgkRMax-1; |
b6d061b7 | 835 | } |
a42548b0 | 836 | return r; |
b6d061b7 | 837 | } |
838 | ||
7258586f | 839 | Double_t AliQuenchingWeights::CalcRk(Double_t k, Double_t I0, Double_t I1) const |
840 | { | |
841 | //calculate R value and | |
842 | //check if it is less then maximum | |
843 | ||
a42548b0 | 844 | Double_t r = fgkRMax-1; |
7258586f | 845 | if(I0>0) |
a42548b0 | 846 | r = 2*I1*I1/I0*k; |
847 | if(r>=fgkRMax) { | |
848 | Warning("CalcRk","Value of r = %.2f; should be less than %.2f",r,fgkRMax); | |
cc885e36 | 849 | return fgkRMax-1; |
7258586f | 850 | } |
a42548b0 | 851 | return r; |
7258586f | 852 | } |
853 | ||
b6d061b7 | 854 | Double_t AliQuenchingWeights::GetELossRandom(Int_t ipart, Double_t length, Double_t e) const |
855 | { | |
856 | // return DeltaE for MS or SH scattering | |
857 | // for given parton type, length and energy | |
858 | // Dependant on ECM (energy constraint method) | |
859 | // e is used to determine where to set bins to zero. | |
860 | ||
861 | if(!fHistos){ | |
862 | Fatal("GetELossRandom","Call SampleEnergyLoss method before!"); | |
863 | return -1000.; | |
864 | } | |
865 | if((ipart<1) || (ipart>2)) { | |
866 | Fatal("GetELossRandom","ipart =%d; but has to be 1 (quark) or 2 (gluon)",ipart); | |
7258586f | 867 | return -1000.; |
b6d061b7 | 868 | } |
869 | ||
7258586f | 870 | Int_t l=GetIndex(length); |
b6d061b7 | 871 | if(l<=0) return 0.; |
b6d061b7 | 872 | |
873 | if(fECMethod==kReweight){ | |
facee35a | 874 | Double_t ret = 2.*e; |
875 | Int_t ws=0; | |
876 | while(ret>e){ | |
877 | ret=fHistos[ipart-1][l-1]->GetRandom(); | |
6bd26c4a | 878 | if(++ws==1e6){ |
879 | Warning("GetELossRandom", | |
880 | "Aborted reweighting; maximum loss assigned after 1e6 trials."); | |
facee35a | 881 | return e; |
882 | } | |
b6d061b7 | 883 | } |
b6d061b7 | 884 | return ret; |
885 | } | |
facee35a | 886 | //kDefault |
887 | Double_t ret=fHistos[ipart-1][l-1]->GetRandom(); | |
888 | if(ret>e) return e; | |
889 | return ret; | |
b6d061b7 | 890 | } |
891 | ||
892 | Double_t AliQuenchingWeights::CalcQuenchedEnergy(Int_t ipart, Double_t length, Double_t e) const | |
893 | { | |
894 | //return quenched parton energy | |
895 | //for given parton type, length and energy | |
896 | ||
897 | Double_t loss=GetELossRandom(ipart,length,e); | |
898 | return e-loss; | |
899 | } | |
900 | ||
e99e3ed5 | 901 | Double_t AliQuenchingWeights::GetELossRandom(Int_t ipart, TH1F *hell, Double_t e) const |
b6d061b7 | 902 | { |
7a76a12e | 903 | // return DeltaE for MS or SH scattering |
904 | // for given parton type, length distribution and energy | |
905 | // Dependant on ECM (energy constraint method) | |
906 | // e is used to determine where to set bins to zero. | |
907 | ||
b6d061b7 | 908 | if(!hell){ |
909 | Warning("GetELossRandom","Pointer to length distribution is NULL."); | |
910 | return 0.; | |
911 | } | |
912 | Double_t ell=hell->GetRandom(); | |
913 | return GetELossRandom(ipart,ell,e); | |
914 | } | |
915 | ||
916 | Double_t AliQuenchingWeights::CalcQuenchedEnergy(Int_t ipart, TH1F *hell, Double_t e) const | |
917 | { | |
918 | //return quenched parton energy | |
919 | //for given parton type, length distribution and energy | |
920 | ||
921 | Double_t loss=GetELossRandom(ipart,hell,e); | |
922 | return e-loss; | |
923 | } | |
924 | ||
7258586f | 925 | Double_t AliQuenchingWeights::GetELossRandomK(Int_t ipart, Double_t I0, Double_t I1, Double_t e) |
926 | { | |
927 | // return DeltaE for new dynamic version | |
928 | // for given parton type, I0 and I1 value and energy | |
929 | // Dependant on ECM (energy constraint method) | |
930 | // e is used to determine where to set bins to zero. | |
931 | ||
932 | // read-in data before first call | |
933 | if(!fTablesLoaded){ | |
934 | Fatal("GetELossRandomK","Tables are not loaded."); | |
935 | return -1000.; | |
936 | } | |
937 | if((ipart<1) || (ipart>2)) { | |
938 | Fatal("GetELossRandomK","ipart =%d; but has to be 1 (quark) or 2 (gluon)",ipart); | |
939 | return -1000.; | |
940 | } | |
941 | ||
b90de01a | 942 | Double_t r=CalcRk(I0,I1); |
943 | if(r<0.){ | |
7258586f | 944 | Fatal("GetELossRandomK","R should not be negative"); |
945 | return -1000.; | |
946 | } | |
947 | Double_t wc=CalcWCk(I1); | |
cc885e36 | 948 | if(wc<=0.){ |
7258586f | 949 | Fatal("GetELossRandomK","wc should be greater than zero"); |
950 | return -1000.; | |
951 | } | |
b90de01a | 952 | if(SampleEnergyLoss(ipart,r)!=0){ |
7258586f | 953 | Fatal("GetELossRandomK","Could not sample energy loss"); |
954 | return -1000.; | |
955 | } | |
956 | ||
957 | if(fECMethod==kReweight){ | |
facee35a | 958 | Double_t ret = 2.*e; |
959 | Int_t ws=0; | |
960 | while(ret>e){ | |
961 | ret=fHisto->GetRandom(); | |
6bd26c4a | 962 | if(++ws==1e6){ |
facee35a | 963 | Warning("GetELossRandomK", |
6bd26c4a | 964 | "Aborted reweighting; maximum loss assigned after 1e6 trials."); |
facee35a | 965 | return e; |
966 | } | |
7258586f | 967 | } |
7258586f | 968 | return ret; |
969 | } | |
facee35a | 970 | |
971 | //kDefault | |
972 | Double_t ret=fHisto->GetRandom()*wc; | |
973 | if(ret>e) return e; | |
974 | return ret; | |
7258586f | 975 | } |
976 | ||
977 | Double_t AliQuenchingWeights::CalcQuenchedEnergyK(Int_t ipart, Double_t I0, Double_t I1, Double_t e) | |
978 | { | |
979 | //return quenched parton energy | |
980 | //for given parton type, I0 and I1 value and energy | |
981 | ||
982 | Double_t loss=GetELossRandomK(ipart,I0,I1,e); | |
983 | return e-loss; | |
984 | } | |
985 | ||
2552c51a | 986 | Double_t AliQuenchingWeights::GetELossRandomKFast(Int_t ipart, Double_t I0, Double_t I1, Double_t e) |
987 | { | |
988 | // return DeltaE for new dynamic version | |
989 | // for given parton type, I0 and I1 value and energy | |
990 | // Dependant on ECM (energy constraint method) | |
991 | // e is used to determine where to set bins to zero. | |
992 | // method is optimized and should only be used if | |
993 | // all parameters are well within the bounds. | |
994 | // read-in data tables before first call | |
995 | ||
b90de01a | 996 | Double_t r=CalcRk(I0,I1); |
997 | if(r<=0.){ | |
2552c51a | 998 | return 0.; |
999 | } | |
1000 | ||
1001 | Double_t wc=CalcWCk(I1); | |
cc885e36 | 1002 | if(wc<=0.){ |
2552c51a | 1003 | return 0.; |
1004 | } | |
1005 | ||
b90de01a | 1006 | return GetELossRandomKFastR(ipart,r,wc,e); |
cc885e36 | 1007 | } |
1008 | ||
b90de01a | 1009 | Double_t AliQuenchingWeights::GetELossRandomKFastR(Int_t ipart, Double_t r, Double_t wc, Double_t e) |
cc885e36 | 1010 | { |
1011 | // return DeltaE for new dynamic version | |
1012 | // for given parton type, R and wc value and energy | |
1013 | // Dependant on ECM (energy constraint method) | |
1014 | // e is used to determine where to set bins to zero. | |
1015 | // method is optimized and should only be used if | |
1016 | // all parameters are well within the bounds. | |
1017 | // read-in data tables before first call | |
1018 | ||
b90de01a | 1019 | if(r>=fgkRMax) { |
1020 | r=fgkRMax-1; | |
cc885e36 | 1021 | } |
b677de56 | 1022 | |
2552c51a | 1023 | Double_t discrete=0.; |
cc885e36 | 1024 | Double_t continuous=0.; |
2552c51a | 1025 | Int_t bin=1; |
1026 | Double_t xxxx = fHisto->GetBinCenter(bin); | |
1027 | if(fMultSoft) | |
b90de01a | 1028 | CalcMult(ipart,r,xxxx,continuous,discrete); |
2552c51a | 1029 | else |
b90de01a | 1030 | CalcSingleHard(ipart,r,xxxx,continuous,discrete); |
2552c51a | 1031 | |
b677de56 | 1032 | if(discrete>=1.0) { |
cc885e36 | 1033 | return 0.; //no energy loss |
2552c51a | 1034 | } |
1035 | ||
2552c51a | 1036 | fHisto->SetBinContent(bin,continuous); |
b677de56 | 1037 | Int_t kbinmax=fHisto->FindBin(e/wc); |
1038 | if(kbinmax>=fgkBins) kbinmax=fgkBins-1; | |
cc885e36 | 1039 | if(kbinmax==1) return e; //maximum energy loss |
1040 | ||
8ab8044e | 1041 | if(fMultSoft) { |
599b2e92 | 1042 | for(bin=2; bin<=kbinmax; bin++) { |
8ab8044e | 1043 | xxxx = fHisto->GetBinCenter(bin); |
b90de01a | 1044 | CalcMult(ipart,r,xxxx,continuous,discrete); |
8ab8044e | 1045 | fHisto->SetBinContent(bin,continuous); |
1046 | } | |
1047 | } else { | |
599b2e92 | 1048 | for(bin=2; bin<=kbinmax; bin++) { |
8ab8044e | 1049 | xxxx = fHisto->GetBinCenter(bin); |
b90de01a | 1050 | CalcSingleHard(ipart,r,xxxx,continuous,discrete); |
8ab8044e | 1051 | fHisto->SetBinContent(bin,continuous); |
1052 | } | |
1053 | } | |
2552c51a | 1054 | |
b677de56 | 1055 | if(fECMethod==kReweight){ |
8ab8044e | 1056 | fHisto->SetBinContent(kbinmax+1,0); |
b677de56 | 1057 | fHisto->Fill(0.,discrete*fgkBins/fgkMaxBin); |
1058 | } else if (fECMethod==kReweightCont) { | |
1059 | fHisto->SetBinContent(kbinmax+1,0); | |
1060 | const Double_t kdelta=fHisto->Integral(1,kbinmax); | |
1061 | fHisto->Scale(1./kdelta*(1-discrete)); | |
1062 | fHisto->Fill(0.,discrete); | |
1063 | } else { | |
1064 | const Double_t kdelta=fHisto->Integral(1,kbinmax); | |
1065 | Double_t val=discrete*fgkBins/fgkMaxBin; | |
1066 | fHisto->Fill(0.,val); | |
8ab8044e | 1067 | fHisto->SetBinContent(kbinmax+1,(1-discrete)*fgkBins/fgkMaxBin-kdelta); |
b677de56 | 1068 | } |
599b2e92 | 1069 | for(bin=kbinmax+2; bin<=fgkBins; bin++) { |
8ab8044e | 1070 | fHisto->SetBinContent(bin,0); |
1071 | } | |
b677de56 | 1072 | //cout << kbinmax << " " << discrete << " " << fHisto->Integral() << endl; |
2552c51a | 1073 | Double_t ret=fHisto->GetRandom()*wc; |
1074 | if(ret>e) return e; | |
1075 | return ret; | |
1076 | } | |
1077 | ||
1078 | Double_t AliQuenchingWeights::CalcQuenchedEnergyKFast(Int_t ipart, Double_t I0, Double_t I1, Double_t e) | |
1079 | { | |
1080 | //return quenched parton energy (fast method) | |
1081 | //for given parton type, I0 and I1 value and energy | |
1082 | ||
1083 | Double_t loss=GetELossRandomKFast(ipart,I0,I1,e); | |
1084 | return e-loss; | |
1085 | } | |
1086 | ||
b677de56 | 1087 | Double_t AliQuenchingWeights::GetDiscreteWeight(Int_t ipart, Double_t I0, Double_t I1) |
1088 | { | |
1089 | // return discrete weight | |
1090 | ||
b90de01a | 1091 | Double_t r=CalcRk(I0,I1); |
1092 | if(r<=0.){ | |
b677de56 | 1093 | return 1.; |
1094 | } | |
b90de01a | 1095 | return GetDiscreteWeightR(ipart,r); |
b677de56 | 1096 | } |
1097 | ||
b90de01a | 1098 | Double_t AliQuenchingWeights::GetDiscreteWeightR(Int_t ipart, Double_t r) |
b677de56 | 1099 | { |
1100 | // return discrete weight | |
1101 | ||
b90de01a | 1102 | if(r>=fgkRMax) { |
1103 | r=fgkRMax-1; | |
b677de56 | 1104 | } |
1105 | ||
1106 | Double_t discrete=0.; | |
1107 | Double_t continuous=0.; | |
1108 | Int_t bin=1; | |
1109 | Double_t xxxx = fHisto->GetBinCenter(bin); | |
1110 | if(fMultSoft) | |
b90de01a | 1111 | CalcMult(ipart,r,xxxx,continuous,discrete); |
b677de56 | 1112 | else |
b90de01a | 1113 | CalcSingleHard(ipart,r,xxxx,continuous,discrete); |
b677de56 | 1114 | return discrete; |
1115 | } | |
1116 | ||
b90de01a | 1117 | void AliQuenchingWeights::GetZeroLossProb(Double_t &p,Double_t &prw,Double_t &prwcont, |
b677de56 | 1118 | Int_t ipart,Double_t I0,Double_t I1,Double_t e) |
1119 | { | |
b90de01a | 1120 | //calculate the probabilty that there is no energy |
1121 | //loss for different ways of energy constraint | |
1122 | p=1.;prw=1.;prwcont=1.; | |
1123 | Double_t r=CalcRk(I0,I1); | |
1124 | if(r<=0.){ | |
b677de56 | 1125 | return; |
1126 | } | |
1127 | Double_t wc=CalcWCk(I1); | |
1128 | if(wc<=0.){ | |
1129 | return; | |
1130 | } | |
b90de01a | 1131 | GetZeroLossProbR(p,prw,prwcont,ipart,r,wc,e); |
b677de56 | 1132 | } |
1133 | ||
b90de01a | 1134 | void AliQuenchingWeights::GetZeroLossProbR(Double_t &p,Double_t &prw,Double_t &prwcont, |
1135 | Int_t ipart, Double_t r,Double_t wc,Double_t e) | |
b677de56 | 1136 | { |
b90de01a | 1137 | //calculate the probabilty that there is no energy |
1138 | //loss for different ways of energy constraint | |
1139 | if(r>=fgkRMax) { | |
1140 | r=fgkRMax-1; | |
b677de56 | 1141 | } |
1142 | ||
1143 | Double_t discrete=0.; | |
1144 | Double_t continuous=0.; | |
1145 | ||
1146 | Int_t kbinmax=fHisto->FindBin(e/wc); | |
1147 | if(kbinmax>=fgkBins) kbinmax=fgkBins-1; | |
1148 | if(fMultSoft) { | |
1149 | for(Int_t bin=1; bin<=kbinmax; bin++) { | |
1150 | Double_t xxxx = fHisto->GetBinCenter(bin); | |
b90de01a | 1151 | CalcMult(ipart,r,xxxx,continuous,discrete); |
b677de56 | 1152 | fHisto->SetBinContent(bin,continuous); |
1153 | } | |
1154 | } else { | |
1155 | for(Int_t bin=1; bin<=kbinmax; bin++) { | |
1156 | Double_t xxxx = fHisto->GetBinCenter(bin); | |
b90de01a | 1157 | CalcSingleHard(ipart,r,xxxx,continuous,discrete); |
b677de56 | 1158 | fHisto->SetBinContent(bin,continuous); |
1159 | } | |
1160 | } | |
1161 | ||
1162 | //non-reweighted P(Delta E = 0) | |
1163 | const Double_t kdelta=fHisto->Integral(1,kbinmax); | |
1164 | Double_t val=discrete*fgkBins/fgkMaxBin; | |
1165 | fHisto->Fill(0.,val); | |
1166 | fHisto->SetBinContent(kbinmax+1,(1-discrete)*fgkBins/fgkMaxBin-kdelta); | |
1167 | Double_t hint=fHisto->Integral(1,kbinmax+1); | |
1168 | p=fHisto->GetBinContent(1)/hint; | |
1169 | ||
1170 | // reweighted | |
1171 | hint=fHisto->Integral(1,kbinmax); | |
1172 | prw=fHisto->GetBinContent(1)/hint; | |
1173 | ||
1174 | Double_t xxxx = fHisto->GetBinCenter(1); | |
b90de01a | 1175 | CalcMult(ipart,r,xxxx,continuous,discrete); |
b677de56 | 1176 | fHisto->SetBinContent(1,continuous); |
1177 | hint=fHisto->Integral(1,kbinmax); | |
1178 | fHisto->Scale(1./hint*(1-discrete)); | |
1179 | fHisto->Fill(0.,discrete); | |
b90de01a | 1180 | prwcont=fHisto->GetBinContent(1); |
b677de56 | 1181 | } |
1182 | ||
b6d061b7 | 1183 | Int_t AliQuenchingWeights::SampleEnergyLoss() |
1184 | { | |
1185 | // Has to be called to fill the histograms | |
1186 | // | |
1187 | // For stored values fQTransport loop over | |
1188 | // particle type and length = 1 to fMaxLength (fm) | |
1189 | // to fill energy loss histos | |
1190 | // | |
1191 | // Take histogram of continuous weights | |
1192 | // Take discrete_weight | |
1193 | // If discrete_weight > 1, put all channels to 0, except channel 1 | |
1194 | // Fill channel 1 with discrete_weight/(1-discrete_weight)*integral | |
1195 | ||
1196 | // read-in data before first call | |
1197 | if(!fTablesLoaded){ | |
7258586f | 1198 | Error("SampleEnergyLoss","Tables are not loaded."); |
b6d061b7 | 1199 | return -1; |
1200 | } | |
1201 | ||
1202 | if(fMultSoft) { | |
1203 | Int_t lmax=CalcLengthMax(fQTransport); | |
1204 | if(fLengthMax>lmax){ | |
7a76a12e | 1205 | Info("SampleEnergyLoss","Maximum length changed from %d to %d;\nin order to have R < %.f",fLengthMax,lmax,fgkRMax); |
b6d061b7 | 1206 | fLengthMax=lmax; |
1207 | } | |
1208 | } else { | |
1209 | Warning("SampleEnergyLoss","Maximum length not checked,\nbecause SingeHard is not yet tested."); | |
1210 | } | |
1211 | ||
1212 | Reset(); | |
1213 | fHistos=new TH1F**[2]; | |
9d851d20 | 1214 | fHistos[0]=new TH1F*[4*fLengthMax]; |
1215 | fHistos[1]=new TH1F*[4*fLengthMax]; | |
b6d061b7 | 1216 | fLengthMaxOld=fLengthMax; //remember old value in case |
1217 | //user wants to reset | |
1218 | ||
1219 | Int_t medvalue=0; | |
1220 | Char_t meddesc[100]; | |
1221 | if(fMultSoft) { | |
1222 | medvalue=(Int_t)(fQTransport*1000.); | |
1223 | sprintf(meddesc,"MS"); | |
1224 | } else { | |
1225 | medvalue=(Int_t)(fMu*1000.); | |
1226 | sprintf(meddesc,"SH"); | |
1227 | } | |
1228 | ||
1229 | for(Int_t ipart=1;ipart<=2;ipart++){ | |
9d851d20 | 1230 | for(Int_t l=1;l<=4*fLengthMax;l++){ |
b6d061b7 | 1231 | Char_t hname[100]; |
1232 | sprintf(hname,"hDisc-ContQW_%s_%d_%d_%d_%d",meddesc,fInstanceNumber,ipart,medvalue,l); | |
9d851d20 | 1233 | Double_t len=l/4.; |
7258586f | 1234 | Double_t wc = CalcWC(len); |
2552c51a | 1235 | fHistos[ipart-1][l-1] = new TH1F(hname,hname,fgkBins,0.,fgkMaxBin*wc); |
b6d061b7 | 1236 | fHistos[ipart-1][l-1]->SetXTitle("#Delta E [GeV]"); |
1237 | fHistos[ipart-1][l-1]->SetYTitle("p(#Delta E)"); | |
1238 | fHistos[ipart-1][l-1]->SetLineColor(4); | |
1239 | ||
7258586f | 1240 | Double_t rrrr = CalcR(wc,len); |
b6d061b7 | 1241 | Double_t discrete=0.; |
1242 | // loop on histogram channels | |
2552c51a | 1243 | for(Int_t bin=1; bin<=fgkBins; bin++) { |
b6d061b7 | 1244 | Double_t xxxx = fHistos[ipart-1][l-1]->GetBinCenter(bin)/wc; |
1245 | Double_t continuous; | |
7258586f | 1246 | if(fMultSoft) |
1247 | CalcMult(ipart,rrrr,xxxx,continuous,discrete); | |
1248 | else | |
1249 | CalcSingleHard(ipart,rrrr,xxxx,continuous,discrete); | |
b6d061b7 | 1250 | fHistos[ipart-1][l-1]->SetBinContent(bin,continuous); |
1251 | } | |
1252 | // add discrete part to distribution | |
1253 | if(discrete>=1.) | |
2552c51a | 1254 | for(Int_t bin=2;bin<=fgkBins;bin++) |
b6d061b7 | 1255 | fHistos[ipart-1][l-1]->SetBinContent(bin,0.); |
1256 | else { | |
2552c51a | 1257 | Double_t val=discrete/(1.-discrete)*fHistos[ipart-1][l-1]->Integral(1,fgkBins); |
b6d061b7 | 1258 | fHistos[ipart-1][l-1]->Fill(0.,val); |
1259 | } | |
2552c51a | 1260 | Double_t hint=fHistos[ipart-1][l-1]->Integral(1,fgkBins); |
b6d061b7 | 1261 | fHistos[ipart-1][l-1]->Scale(1./hint); |
1262 | } | |
1263 | } | |
1264 | return 0; | |
1265 | } | |
1266 | ||
b90de01a | 1267 | Int_t AliQuenchingWeights::SampleEnergyLoss(Int_t ipart, Double_t r) |
7258586f | 1268 | { |
1269 | // Sample energy loss directly for one particle type | |
1270 | // choses R (safe it and keep it until next call of function) | |
1271 | ||
1272 | // read-in data before first call | |
1273 | if(!fTablesLoaded){ | |
1274 | Error("SampleEnergyLoss","Tables are not loaded."); | |
1275 | return -1; | |
1276 | } | |
1277 | ||
1278 | Double_t discrete=0.; | |
1279 | Double_t continuous=0;; | |
1280 | Int_t bin=1; | |
1281 | Double_t xxxx = fHisto->GetBinCenter(bin); | |
1282 | if(fMultSoft) | |
b90de01a | 1283 | CalcMult(ipart,r,xxxx,continuous,discrete); |
7258586f | 1284 | else |
b90de01a | 1285 | CalcSingleHard(ipart,r,xxxx,continuous,discrete); |
7258586f | 1286 | |
1287 | if(discrete>=1.) { | |
1288 | fHisto->SetBinContent(1,1.); | |
599b2e92 | 1289 | for(bin=2;bin<=fgkBins;bin++) |
7258586f | 1290 | fHisto->SetBinContent(bin,0.); |
1291 | return 0; | |
1292 | } | |
1293 | ||
1294 | fHisto->SetBinContent(bin,continuous); | |
599b2e92 | 1295 | for(bin=2; bin<=fgkBins; bin++) { |
7258586f | 1296 | xxxx = fHisto->GetBinCenter(bin); |
1297 | if(fMultSoft) | |
b90de01a | 1298 | CalcMult(ipart,r,xxxx,continuous,discrete); |
7258586f | 1299 | else |
b90de01a | 1300 | CalcSingleHard(ipart,r,xxxx,continuous,discrete); |
7258586f | 1301 | fHisto->SetBinContent(bin,continuous); |
1302 | } | |
8ab8044e | 1303 | |
2552c51a | 1304 | Double_t val=discrete/(1.-discrete)*fHisto->Integral(1,fgkBins); |
7258586f | 1305 | fHisto->Fill(0.,val); |
2552c51a | 1306 | Double_t hint=fHisto->Integral(1,fgkBins); |
7258586f | 1307 | if(hint!=0) |
1308 | fHisto->Scale(1./hint); | |
1309 | else { | |
2552c51a | 1310 | //cout << discrete << " " << hint << " " << continuous << endl; |
7258586f | 1311 | return -1; |
1312 | } | |
1313 | return 0; | |
1314 | } | |
1315 | ||
1316 | const TH1F* AliQuenchingWeights::GetHisto(Int_t ipart,Double_t length) const | |
b6d061b7 | 1317 | { |
7a76a12e | 1318 | //return quenching histograms |
1319 | //for ipart and length | |
1320 | ||
b6d061b7 | 1321 | if(!fHistos){ |
1322 | Fatal("GetELossRandom","Call SampleEnergyLoss method before!"); | |
1323 | return 0; | |
1324 | } | |
1325 | if((ipart<1) || (ipart>2)) { | |
1326 | Fatal("GetELossRandom","ipart =%d; but has to be 1 (quark) or 2 (gluon)",ipart); | |
1327 | return 0; | |
1328 | } | |
1329 | ||
7258586f | 1330 | Int_t l=GetIndex(length); |
b6d061b7 | 1331 | if(l<=0) return 0; |
b6d061b7 | 1332 | return fHistos[ipart-1][l-1]; |
1333 | } | |
1334 | ||
1335 | TH1F* AliQuenchingWeights::ComputeQWHisto(Int_t ipart,Double_t medval,Double_t length) const | |
1336 | { | |
1337 | // ipart = 1 for quark, 2 for gluon | |
1338 | // medval a) qtransp = transport coefficient (GeV^2/fm) | |
1339 | // b) mu = Debye mass (GeV) | |
1340 | // length = path length in medium (fm) | |
1341 | // Get from SW tables: | |
7258586f | 1342 | // - continuous weight, as a function of dE/wc |
b6d061b7 | 1343 | |
1344 | Double_t wc = 0; | |
1345 | Char_t meddesc[100]; | |
1346 | if(fMultSoft) { | |
1347 | wc=CalcWC(medval,length); | |
1348 | sprintf(meddesc,"MS"); | |
1349 | } else { | |
1350 | wc=CalcWCbar(medval,length); | |
1351 | sprintf(meddesc,"SH"); | |
1352 | } | |
1353 | ||
1354 | Char_t hname[100]; | |
1355 | sprintf(hname,"hContQWHisto_%s_%d_%d_%d",meddesc,ipart, | |
1356 | (Int_t)(medval*1000.),(Int_t)length); | |
1357 | ||
2552c51a | 1358 | TH1F *hist = new TH1F("hist",hname,fgkBins,0.,fgkMaxBin*wc); |
b6d061b7 | 1359 | hist->SetXTitle("#Delta E [GeV]"); |
1360 | hist->SetYTitle("p(#Delta E)"); | |
1361 | hist->SetLineColor(4); | |
1362 | ||
1363 | Double_t rrrr = CalcR(wc,length); | |
7258586f | 1364 | //loop on histogram channels |
2552c51a | 1365 | for(Int_t bin=1; bin<=fgkBins; bin++) { |
b6d061b7 | 1366 | Double_t xxxx = hist->GetBinCenter(bin)/wc; |
1367 | Double_t continuous,discrete; | |
1368 | Int_t ret=0; | |
1369 | if(fMultSoft) ret=CalcMult(ipart,rrrr,xxxx,continuous,discrete); | |
1370 | else ret=CalcSingleHard(ipart,rrrr,xxxx,continuous,discrete); | |
1371 | if(ret!=0){ | |
1372 | delete hist; | |
1373 | return 0; | |
1374 | }; | |
1375 | hist->SetBinContent(bin,continuous); | |
1376 | } | |
1377 | return hist; | |
1378 | } | |
1379 | ||
1380 | TH1F* AliQuenchingWeights::ComputeQWHistoX(Int_t ipart,Double_t medval,Double_t length) const | |
1381 | { | |
1382 | // ipart = 1 for quark, 2 for gluon | |
1383 | // medval a) qtransp = transport coefficient (GeV^2/fm) | |
1384 | // b) mu = Debye mass (GeV) | |
1385 | // length = path length in medium (fm) | |
1386 | // Get from SW tables: | |
7258586f | 1387 | // - continuous weight, as a function of dE/wc |
b6d061b7 | 1388 | |
1389 | Double_t wc = 0; | |
1390 | Char_t meddesc[100]; | |
1391 | if(fMultSoft) { | |
1392 | wc=CalcWC(medval,length); | |
1393 | sprintf(meddesc,"MS"); | |
1394 | } else { | |
1395 | wc=CalcWCbar(medval,length); | |
1396 | sprintf(meddesc,"SH"); | |
1397 | } | |
1398 | ||
1399 | Char_t hname[100]; | |
1400 | sprintf(hname,"hContQWHistox_%s_%d_%d_%d",meddesc,ipart, | |
1401 | (Int_t)(medval*1000.),(Int_t)length); | |
1402 | ||
2552c51a | 1403 | TH1F *histx = new TH1F("histx",hname,fgkBins,0.,fgkMaxBin); |
b6d061b7 | 1404 | histx->SetXTitle("x = #Delta E/#omega_{c}"); |
1405 | if(fMultSoft) | |
1406 | histx->SetYTitle("p(#Delta E/#omega_{c})"); | |
1407 | else | |
1408 | histx->SetYTitle("p(#Delta E/#bar#omega_{c})"); | |
1409 | histx->SetLineColor(4); | |
1410 | ||
1411 | Double_t rrrr = CalcR(wc,length); | |
7258586f | 1412 | //loop on histogram channels |
2552c51a | 1413 | for(Int_t bin=1; bin<=fgkBins; bin++) { |
b6d061b7 | 1414 | Double_t xxxx = histx->GetBinCenter(bin); |
1415 | Double_t continuous,discrete; | |
1416 | Int_t ret=0; | |
1417 | if(fMultSoft) ret=CalcMult(ipart,rrrr,xxxx,continuous,discrete); | |
1418 | else ret=CalcSingleHard(ipart,rrrr,xxxx,continuous,discrete); | |
1419 | if(ret!=0){ | |
1420 | delete histx; | |
1421 | return 0; | |
1422 | }; | |
1423 | histx->SetBinContent(bin,continuous); | |
1424 | } | |
1425 | return histx; | |
1426 | } | |
1427 | ||
b90de01a | 1428 | TH1F* AliQuenchingWeights::ComputeQWHistoX(Int_t ipart,Double_t r) const |
7258586f | 1429 | { |
1430 | // compute P(E) distribution for | |
1431 | // given ipart = 1 for quark, 2 for gluon | |
1432 | // and R | |
1433 | ||
1434 | Char_t meddesc[100]; | |
1435 | if(fMultSoft) { | |
1436 | sprintf(meddesc,"MS"); | |
1437 | } else { | |
1438 | sprintf(meddesc,"SH"); | |
1439 | } | |
1440 | ||
1441 | Char_t hname[100]; | |
b90de01a | 1442 | sprintf(hname,"hQWHistox_%s_%d_%.2f",meddesc,ipart,r); |
2552c51a | 1443 | TH1F *histx = new TH1F("histx",hname,fgkBins,0.,fgkMaxBin); |
7258586f | 1444 | histx->SetXTitle("x = #Delta E/#omega_{c}"); |
1445 | if(fMultSoft) | |
1446 | histx->SetYTitle("p(#Delta E/#omega_{c})"); | |
1447 | else | |
1448 | histx->SetYTitle("p(#Delta E/#bar#omega_{c})"); | |
1449 | histx->SetLineColor(4); | |
1450 | ||
b90de01a | 1451 | Double_t rrrr = r; |
7258586f | 1452 | Double_t continuous=0.,discrete=0.; |
1453 | //loop on histogram channels | |
2552c51a | 1454 | for(Int_t bin=1; bin<=fgkBins; bin++) { |
7258586f | 1455 | Double_t xxxx = histx->GetBinCenter(bin); |
1456 | Int_t ret=0; | |
1457 | if(fMultSoft) ret=CalcMult(ipart,rrrr,xxxx,continuous,discrete); | |
1458 | else ret=CalcSingleHard(ipart,rrrr,xxxx,continuous,discrete); | |
1459 | if(ret!=0){ | |
1460 | delete histx; | |
1461 | return 0; | |
1462 | }; | |
1463 | histx->SetBinContent(bin,continuous); | |
1464 | } | |
1465 | ||
1466 | //add discrete part to distribution | |
1467 | if(discrete>=1.) | |
2552c51a | 1468 | for(Int_t bin=2;bin<=fgkBins;bin++) |
7258586f | 1469 | histx->SetBinContent(bin,0.); |
1470 | else { | |
2552c51a | 1471 | Double_t val=discrete/(1.-discrete)*histx->Integral(1,fgkBins); |
7258586f | 1472 | histx->Fill(0.,val); |
1473 | } | |
2552c51a | 1474 | Double_t hint=histx->Integral(1,fgkBins); |
7258586f | 1475 | if(hint!=0) histx->Scale(1./hint); |
1476 | ||
1477 | return histx; | |
1478 | } | |
1479 | ||
e99e3ed5 | 1480 | TH1F* AliQuenchingWeights::ComputeELossHisto(Int_t ipart,Double_t medval,Double_t l,Double_t e) const |
b6d061b7 | 1481 | { |
7258586f | 1482 | // compute energy loss histogram for |
1483 | // parton type, medium value, length and energy | |
7a76a12e | 1484 | |
b6d061b7 | 1485 | AliQuenchingWeights *dummy=new AliQuenchingWeights(*this); |
1486 | if(fMultSoft){ | |
1487 | dummy->SetQTransport(medval); | |
1488 | dummy->InitMult(); | |
1489 | } else { | |
1490 | dummy->SetMu(medval); | |
1491 | dummy->InitSingleHard(); | |
1492 | } | |
1493 | dummy->SampleEnergyLoss(); | |
1494 | ||
1495 | Char_t name[100]; | |
1496 | Char_t hname[100]; | |
1497 | if(ipart==1){ | |
1498 | sprintf(name,"Energy Loss Distribution - Quarks;E_{loss} (GeV);#"); | |
1499 | sprintf(hname,"hLossQuarks"); | |
1500 | } else { | |
1501 | sprintf(name,"Energy Loss Distribution - Gluons;E_{loss} (GeV);#"); | |
1502 | sprintf(hname,"hLossGluons"); | |
1503 | } | |
1504 | ||
1505 | TH1F *h = new TH1F(hname,name,250,0,250); | |
1506 | for(Int_t i=0;i<100000;i++){ | |
1507 | //if(i % 1000 == 0) cout << "." << flush; | |
1508 | Double_t loss=dummy->GetELossRandom(ipart,l,e); | |
1509 | h->Fill(loss); | |
1510 | } | |
b6d061b7 | 1511 | h->SetStats(kTRUE); |
b6d061b7 | 1512 | delete dummy; |
1513 | return h; | |
1514 | } | |
1515 | ||
e99e3ed5 | 1516 | TH1F* AliQuenchingWeights::ComputeELossHisto(Int_t ipart,Double_t medval,TH1F *hEll,Double_t e) const |
b6d061b7 | 1517 | { |
7258586f | 1518 | // compute energy loss histogram for |
1519 | // parton type, medium value, | |
1520 | // length distribution and energy | |
7a76a12e | 1521 | |
b6d061b7 | 1522 | AliQuenchingWeights *dummy=new AliQuenchingWeights(*this); |
1523 | if(fMultSoft){ | |
1524 | dummy->SetQTransport(medval); | |
1525 | dummy->InitMult(); | |
1526 | } else { | |
1527 | dummy->SetMu(medval); | |
1528 | dummy->InitSingleHard(); | |
1529 | } | |
1530 | dummy->SampleEnergyLoss(); | |
1531 | ||
1532 | Char_t name[100]; | |
1533 | Char_t hname[100]; | |
1534 | if(ipart==1){ | |
1535 | sprintf(name,"Energy Loss Distribution - Quarks;E_{loss} (GeV);#"); | |
1536 | sprintf(hname,"hLossQuarks"); | |
1537 | } else { | |
1538 | sprintf(name,"Energy Loss Distribution - Gluons;E_{loss} (GeV);#"); | |
1539 | sprintf(hname,"hLossGluons"); | |
1540 | } | |
1541 | ||
1542 | TH1F *h = new TH1F(hname,name,250,0,250); | |
1543 | for(Int_t i=0;i<100000;i++){ | |
1544 | //if(i % 1000 == 0) cout << "." << flush; | |
1545 | Double_t loss=dummy->GetELossRandom(ipart,hEll,e); | |
1546 | h->Fill(loss); | |
1547 | } | |
b6d061b7 | 1548 | h->SetStats(kTRUE); |
b6d061b7 | 1549 | delete dummy; |
1550 | return h; | |
1551 | } | |
1552 | ||
b90de01a | 1553 | TH1F* AliQuenchingWeights::ComputeELossHisto(Int_t ipart,Double_t r) const |
7258586f | 1554 | { |
1555 | // compute energy loss histogram for | |
1556 | // parton type and given R | |
1557 | ||
b90de01a | 1558 | TH1F *dummy = ComputeQWHistoX(ipart,r); |
7258586f | 1559 | if(!dummy) return 0; |
1560 | ||
1561 | Char_t hname[100]; | |
b90de01a | 1562 | sprintf(hname,"hELossHistox_%d_%.2f",ipart,r); |
2552c51a | 1563 | TH1F *histx = new TH1F("histxr",hname,fgkBins,0.,fgkMaxBin); |
7258586f | 1564 | for(Int_t i=0;i<100000;i++){ |
1565 | //if(i % 1000 == 0) cout << "." << flush; | |
1566 | Double_t loss=dummy->GetRandom(); | |
1567 | histx->Fill(loss); | |
1568 | } | |
1569 | delete dummy; | |
1570 | return histx; | |
1571 | } | |
1572 | ||
1573 | Double_t AliQuenchingWeights::GetMeanELoss(Int_t ipart,Double_t medval,Double_t l) const | |
1574 | { | |
1575 | // compute average energy loss for | |
1576 | // parton type, medium value, length and energy | |
1577 | ||
1578 | TH1F *dummy = ComputeELossHisto(ipart,medval,l); | |
1579 | if(!dummy) return 0; | |
1580 | Double_t ret=dummy->GetMean(); | |
1581 | delete dummy; | |
1582 | return ret; | |
1583 | } | |
1584 | ||
1585 | Double_t AliQuenchingWeights::GetMeanELoss(Int_t ipart,Double_t medval,TH1F *hEll) const | |
1586 | { | |
1587 | // compute average energy loss for | |
1588 | // parton type, medium value, | |
1589 | // length distribution and energy | |
1590 | ||
1591 | TH1F *dummy = ComputeELossHisto(ipart,medval,hEll); | |
1592 | if(!dummy) return 0; | |
1593 | Double_t ret=dummy->GetMean(); | |
1594 | delete dummy; | |
1595 | return ret; | |
1596 | } | |
1597 | ||
b90de01a | 1598 | Double_t AliQuenchingWeights::GetMeanELoss(Int_t ipart,Double_t r) const |
7258586f | 1599 | { |
1600 | // compute average energy loss over wc | |
1601 | // for parton type and given R | |
1602 | ||
b90de01a | 1603 | TH1F *dummy = ComputeELossHisto(ipart,r); |
7258586f | 1604 | if(!dummy) return 0; |
1605 | Double_t ret=dummy->GetMean(); | |
1606 | delete dummy; | |
1607 | return ret; | |
1608 | } | |
1609 | ||
9175f0df | 1610 | void AliQuenchingWeights::PlotDiscreteWeights(Double_t len,Double_t qm) const |
b6d061b7 | 1611 | { |
7258586f | 1612 | // plot discrete weights for given length |
7a76a12e | 1613 | |
b6d061b7 | 1614 | TCanvas *c; |
1615 | if(fMultSoft) | |
1616 | c = new TCanvas("cdiscms","Discrete Weight for Multiple Scattering",0,0,500,400); | |
1617 | else | |
1618 | c = new TCanvas("cdiscsh","Discrete Weight for Single Hard Scattering",0,0,500,400); | |
1619 | c->cd(); | |
1620 | ||
9175f0df | 1621 | TH2F *hframe = new TH2F("hdisc","",2,0,qm+.1,2,0,1.25); |
b6d061b7 | 1622 | hframe->SetStats(0); |
1623 | if(fMultSoft) | |
1624 | hframe->SetXTitle("#hat{q} [GeV^{2}/fm]"); | |
1625 | else | |
1626 | hframe->SetXTitle("#mu [GeV]"); | |
9175f0df | 1627 | //hframe->SetYTitle("Probability #Delta E = 0 , p_{0}"); |
1628 | hframe->SetYTitle("p_{0} (discrete weight)"); | |
b6d061b7 | 1629 | hframe->Draw(); |
1630 | ||
9175f0df | 1631 | Int_t points=(Int_t)qm*4; |
1632 | TGraph *gq=new TGraph(points); | |
b6d061b7 | 1633 | Int_t i=0; |
1634 | if(fMultSoft) { | |
9175f0df | 1635 | for(Double_t q=0.05;q<=qm+.05;q+=0.25){ |
b6d061b7 | 1636 | Double_t disc,cont; |
7258586f | 1637 | CalcMult(1,1.0,q,len,cont,disc); |
b6d061b7 | 1638 | gq->SetPoint(i,q,disc);i++; |
1639 | } | |
1640 | } else { | |
9175f0df | 1641 | for(Double_t m=0.05;m<=qm+.05;m+=0.25){ |
b6d061b7 | 1642 | Double_t disc,cont; |
7258586f | 1643 | CalcSingleHard(1,1.0,m,len,cont, disc); |
b6d061b7 | 1644 | gq->SetPoint(i,m,disc);i++; |
1645 | } | |
1646 | } | |
1647 | gq->SetMarkerStyle(20); | |
9175f0df | 1648 | gq->SetMarkerColor(1); |
1649 | gq->SetLineStyle(1); | |
1650 | gq->SetLineColor(1); | |
1651 | gq->Draw("l"); | |
b6d061b7 | 1652 | |
9175f0df | 1653 | TGraph *gg=new TGraph(points); |
b6d061b7 | 1654 | i=0; |
1655 | if(fMultSoft){ | |
9175f0df | 1656 | for(Double_t q=0.05;q<=qm+.05;q+=0.25){ |
b6d061b7 | 1657 | Double_t disc,cont; |
7258586f | 1658 | CalcMult(2,1.0,q,len,cont,disc); |
b6d061b7 | 1659 | gg->SetPoint(i,q,disc);i++; |
1660 | } | |
1661 | } else { | |
9175f0df | 1662 | for(Double_t m=0.05;m<=qm+.05;m+=0.25){ |
b6d061b7 | 1663 | Double_t disc,cont; |
7258586f | 1664 | CalcSingleHard(2,1.0,m,len,cont,disc); |
b6d061b7 | 1665 | gg->SetPoint(i,m,disc);i++; |
1666 | } | |
1667 | } | |
1668 | gg->SetMarkerStyle(24); | |
9175f0df | 1669 | gg->SetMarkerColor(2); |
1670 | gg->SetLineStyle(2); | |
1671 | gg->SetLineColor(2); | |
1672 | gg->Draw("l"); | |
b6d061b7 | 1673 | |
1674 | TLegend *l1a = new TLegend(0.5,0.6,.95,0.8); | |
1675 | l1a->SetFillStyle(0); | |
1676 | l1a->SetBorderSize(0); | |
1677 | Char_t label[100]; | |
7258586f | 1678 | sprintf(label,"L = %.1f fm",len); |
b6d061b7 | 1679 | l1a->AddEntry(gq,label,""); |
9175f0df | 1680 | l1a->AddEntry(gq,"quark projectile","l"); |
1681 | l1a->AddEntry(gg,"gluon projectile","l"); | |
b6d061b7 | 1682 | l1a->Draw(); |
1683 | ||
1684 | c->Update(); | |
1685 | } | |
1686 | ||
7258586f | 1687 | void AliQuenchingWeights::PlotContWeights(Int_t itype,Double_t ell) const |
b6d061b7 | 1688 | { |
7258586f | 1689 | // plot continous weights for |
1690 | // given parton type and length | |
7a76a12e | 1691 | |
b6d061b7 | 1692 | Float_t medvals[3]; |
1693 | Char_t title[1024]; | |
1694 | Char_t name[1024]; | |
1695 | if(fMultSoft) { | |
1696 | if(itype==1) | |
1697 | sprintf(title,"Cont. Weight for Multiple Scattering - Quarks"); | |
1698 | else if(itype==2) | |
1699 | sprintf(title,"Cont. Weight for Multiple Scattering - Gluons"); | |
1700 | else return; | |
1701 | medvals[0]=4;medvals[1]=1;medvals[2]=0.5; | |
1702 | sprintf(name,"ccont-ms-%d",itype); | |
1703 | } else { | |
1704 | if(itype==1) | |
1705 | sprintf(title,"Cont. Weight for Single Hard Scattering - Quarks"); | |
1706 | else if(itype==2) | |
1707 | sprintf(title,"Cont. Weight for Single Hard Scattering - Gluons"); | |
1708 | else return; | |
1709 | medvals[0]=2;medvals[1]=1;medvals[2]=0.5; | |
1710 | sprintf(name,"ccont-ms-%d",itype); | |
1711 | } | |
1712 | ||
1713 | TCanvas *c = new TCanvas(name,title,0,0,500,400); | |
1714 | c->cd(); | |
1715 | TH1F *h1=ComputeQWHisto(itype,medvals[0],ell); | |
1716 | h1->SetName("h1"); | |
1717 | h1->SetTitle(title); | |
1718 | h1->SetStats(0); | |
1719 | h1->SetLineColor(1); | |
1720 | h1->DrawCopy(); | |
1721 | TH1F *h2=ComputeQWHisto(itype,medvals[1],ell); | |
1722 | h2->SetName("h2"); | |
1723 | h2->SetLineColor(2); | |
1724 | h2->DrawCopy("SAME"); | |
1725 | TH1F *h3=ComputeQWHisto(itype,medvals[2],ell); | |
1726 | h3->SetName("h3"); | |
1727 | h3->SetLineColor(3); | |
1728 | h3->DrawCopy("SAME"); | |
1729 | ||
1730 | TLegend *l1a = new TLegend(0.5,0.6,.95,0.8); | |
1731 | l1a->SetFillStyle(0); | |
1732 | l1a->SetBorderSize(0); | |
1733 | Char_t label[100]; | |
7258586f | 1734 | sprintf(label,"L = %.1f fm",ell); |
b6d061b7 | 1735 | l1a->AddEntry(h1,label,""); |
1736 | if(fMultSoft) { | |
1737 | sprintf(label,"#hat{q} = %.1f GeV^{2}/fm",medvals[0]); | |
1738 | l1a->AddEntry(h1,label,"pl"); | |
1739 | sprintf(label,"#hat{q} = %.1f GeV^{2}/fm",medvals[1]); | |
1740 | l1a->AddEntry(h2,label,"pl"); | |
1741 | sprintf(label,"#hat{q} = %.1f GeV^{2}/fm",medvals[2]); | |
1742 | l1a->AddEntry(h3,label,"pl"); | |
1743 | } else { | |
1744 | sprintf(label,"#mu = %.1f GeV",medvals[0]); | |
1745 | l1a->AddEntry(h1,label,"pl"); | |
1746 | sprintf(label,"#mu = %.1f GeV",medvals[1]); | |
1747 | l1a->AddEntry(h2,label,"pl"); | |
1748 | sprintf(label,"#mu = %.1f GeV",medvals[2]); | |
1749 | l1a->AddEntry(h3,label,"pl"); | |
1750 | } | |
1751 | l1a->Draw(); | |
1752 | ||
1753 | c->Update(); | |
1754 | } | |
1755 | ||
7258586f | 1756 | void AliQuenchingWeights::PlotContWeightsVsL(Int_t itype,Double_t medval) const |
b6d061b7 | 1757 | { |
7258586f | 1758 | // plot continous weights for |
1759 | // given parton type and medium value | |
7a76a12e | 1760 | |
b6d061b7 | 1761 | Char_t title[1024]; |
1762 | Char_t name[1024]; | |
1763 | if(fMultSoft) { | |
1764 | if(itype==1) | |
1765 | sprintf(title,"Cont. Weight for Multiple Scattering - Quarks"); | |
1766 | else if(itype==2) | |
1767 | sprintf(title,"Cont. Weight for Multiple Scattering - Gluons"); | |
1768 | else return; | |
1769 | sprintf(name,"ccont2-ms-%d",itype); | |
1770 | } else { | |
1771 | if(itype==1) | |
1772 | sprintf(title,"Cont. Weight for Single Hard Scattering - Quarks"); | |
1773 | else if(itype==2) | |
1774 | sprintf(title,"Cont. Weight for Single Hard Scattering - Gluons"); | |
1775 | else return; | |
1776 | sprintf(name,"ccont2-sh-%d",itype); | |
1777 | } | |
1778 | TCanvas *c = new TCanvas(name,title,0,0,500,400); | |
1779 | c->cd(); | |
1780 | TH1F *h1=ComputeQWHisto(itype,medval,8); | |
1781 | h1->SetName("h1"); | |
1782 | h1->SetTitle(title); | |
1783 | h1->SetStats(0); | |
1784 | h1->SetLineColor(1); | |
1785 | h1->DrawCopy(); | |
1786 | TH1F *h2=ComputeQWHisto(itype,medval,5); | |
1787 | h2->SetName("h2"); | |
1788 | h2->SetLineColor(2); | |
1789 | h2->DrawCopy("SAME"); | |
1790 | TH1F *h3=ComputeQWHisto(itype,medval,2); | |
1791 | h3->SetName("h3"); | |
1792 | h3->SetLineColor(3); | |
1793 | h3->DrawCopy("SAME"); | |
1794 | ||
1795 | TLegend *l1a = new TLegend(0.5,0.6,.95,0.8); | |
1796 | l1a->SetFillStyle(0); | |
1797 | l1a->SetBorderSize(0); | |
1798 | Char_t label[100]; | |
1799 | if(fMultSoft) | |
1800 | sprintf(label,"#hat{q} = %.1f GeV^{2}/fm",medval); | |
1801 | else | |
1802 | sprintf(label,"#mu = %.1f GeV",medval); | |
1803 | ||
1804 | l1a->AddEntry(h1,label,""); | |
1805 | l1a->AddEntry(h1,"L = 8 fm","pl"); | |
1806 | l1a->AddEntry(h2,"L = 5 fm","pl"); | |
1807 | l1a->AddEntry(h3,"L = 2 fm","pl"); | |
1808 | l1a->Draw(); | |
1809 | ||
1810 | c->Update(); | |
1811 | } | |
1812 | ||
9175f0df | 1813 | void AliQuenchingWeights::PlotAvgELoss(Double_t len,Double_t qm,Double_t e) const |
b6d061b7 | 1814 | { |
7258586f | 1815 | // plot average energy loss for given length |
1816 | // and parton energy | |
7a76a12e | 1817 | |
b6d061b7 | 1818 | if(!fTablesLoaded){ |
7258586f | 1819 | Error("PlotAvgELoss","Tables are not loaded."); |
b6d061b7 | 1820 | return; |
1821 | } | |
1822 | ||
1823 | Char_t title[1024]; | |
1824 | Char_t name[1024]; | |
1825 | if(fMultSoft){ | |
7258586f | 1826 | sprintf(title,"Average Energy Loss for Multiple Scattering"); |
b6d061b7 | 1827 | sprintf(name,"cavgelossms"); |
1828 | } else { | |
7258586f | 1829 | sprintf(title,"Average Energy Loss for Single Hard Scattering"); |
b6d061b7 | 1830 | sprintf(name,"cavgelosssh"); |
1831 | } | |
1832 | ||
1833 | TCanvas *c = new TCanvas(name,title,0,0,500,400); | |
1834 | c->cd(); | |
9175f0df | 1835 | TH2F *hframe = new TH2F("avgloss","",2,0,qm+.1,2,0,100); |
b6d061b7 | 1836 | hframe->SetStats(0); |
1837 | if(fMultSoft) | |
1838 | hframe->SetXTitle("#hat{q} [GeV^{2}/fm]"); | |
1839 | else | |
1840 | hframe->SetXTitle("#mu [GeV]"); | |
1841 | hframe->SetYTitle("<E_{loss}> [GeV]"); | |
1842 | hframe->Draw(); | |
1843 | ||
1844 | TGraph *gq=new TGraph(20); | |
1845 | Int_t i=0; | |
9175f0df | 1846 | for(Double_t v=0.05;v<=qm+.05;v+=0.25){ |
b6d061b7 | 1847 | TH1F *dummy=ComputeELossHisto(1,v,len,e); |
1848 | Double_t avgloss=dummy->GetMean(); | |
1849 | gq->SetPoint(i,v,avgloss);i++; | |
1850 | delete dummy; | |
1851 | } | |
9175f0df | 1852 | gq->SetMarkerStyle(21); |
b6d061b7 | 1853 | gq->Draw("pl"); |
1854 | ||
9175f0df | 1855 | Int_t points=(Int_t)qm*4; |
1856 | TGraph *gg=new TGraph(points); | |
b6d061b7 | 1857 | i=0; |
9175f0df | 1858 | for(Double_t v=0.05;v<=qm+.05;v+=0.25){ |
b6d061b7 | 1859 | TH1F *dummy=ComputeELossHisto(2,v,len,e); |
1860 | Double_t avgloss=dummy->GetMean(); | |
1861 | gg->SetPoint(i,v,avgloss);i++; | |
1862 | delete dummy; | |
1863 | } | |
9175f0df | 1864 | gg->SetMarkerStyle(20); |
1865 | gg->SetMarkerColor(2); | |
b6d061b7 | 1866 | gg->Draw("pl"); |
1867 | ||
9175f0df | 1868 | TGraph *gratio=new TGraph(points); |
599b2e92 | 1869 | for(i=0;i<points;i++){ |
7258586f | 1870 | Double_t x,y,x2,y2; |
1871 | gg->GetPoint(i,x,y); | |
1872 | gq->GetPoint(i,x2,y2); | |
1873 | if(y2>0) | |
1874 | gratio->SetPoint(i,x,y/y2*10/2.25); | |
1875 | else gratio->SetPoint(i,x,0); | |
1876 | } | |
1877 | gratio->SetLineStyle(4); | |
1878 | gratio->Draw(); | |
9175f0df | 1879 | TLegend *l1a = new TLegend(0.15,0.60,0.50,0.90); |
b6d061b7 | 1880 | l1a->SetFillStyle(0); |
1881 | l1a->SetBorderSize(0); | |
1882 | Char_t label[100]; | |
7258586f | 1883 | sprintf(label,"L = %.1f fm",len); |
b6d061b7 | 1884 | l1a->AddEntry(gq,label,""); |
9175f0df | 1885 | l1a->AddEntry(gq,"quark projectile","pl"); |
1886 | l1a->AddEntry(gg,"gluon projectile","pl"); | |
7258586f | 1887 | l1a->AddEntry(gratio,"gluon/quark/2.25*10","pl"); |
b6d061b7 | 1888 | l1a->Draw(); |
1889 | ||
1890 | c->Update(); | |
1891 | } | |
1892 | ||
e99e3ed5 | 1893 | void AliQuenchingWeights::PlotAvgELoss(TH1F *hEll,Double_t e) const |
b6d061b7 | 1894 | { |
7258586f | 1895 | // plot average energy loss for given |
1896 | // length distribution and parton energy | |
7a76a12e | 1897 | |
b6d061b7 | 1898 | if(!fTablesLoaded){ |
7258586f | 1899 | Error("PlotAvgELossVs","Tables are not loaded."); |
b6d061b7 | 1900 | return; |
1901 | } | |
1902 | ||
1903 | Char_t title[1024]; | |
1904 | Char_t name[1024]; | |
1905 | if(fMultSoft){ | |
7258586f | 1906 | sprintf(title,"Average Energy Loss for Multiple Scattering"); |
b6d061b7 | 1907 | sprintf(name,"cavgelossms2"); |
1908 | } else { | |
7258586f | 1909 | sprintf(title,"Average Energy Loss for Single Hard Scattering"); |
b6d061b7 | 1910 | sprintf(name,"cavgelosssh2"); |
1911 | } | |
1912 | ||
1913 | TCanvas *c = new TCanvas(name,title,0,0,500,400); | |
1914 | c->cd(); | |
1915 | TH2F *hframe = new TH2F("havgloss",title,2,0,5.1,2,0,100); | |
1916 | hframe->SetStats(0); | |
1917 | if(fMultSoft) | |
1918 | hframe->SetXTitle("#hat{q} [GeV^{2}/fm]"); | |
1919 | else | |
1920 | hframe->SetXTitle("#mu [GeV]"); | |
1921 | hframe->SetYTitle("<E_{loss}> [GeV]"); | |
1922 | hframe->Draw(); | |
1923 | ||
1924 | TGraph *gq=new TGraph(20); | |
1925 | Int_t i=0; | |
1926 | for(Double_t v=0.05;v<=5.05;v+=0.25){ | |
1927 | TH1F *dummy=ComputeELossHisto(1,v,hEll,e); | |
1928 | Double_t avgloss=dummy->GetMean(); | |
1929 | gq->SetPoint(i,v,avgloss);i++; | |
1930 | delete dummy; | |
1931 | } | |
1932 | gq->SetMarkerStyle(20); | |
1933 | gq->Draw("pl"); | |
1934 | ||
1935 | TGraph *gg=new TGraph(20); | |
1936 | i=0; | |
1937 | for(Double_t v=0.05;v<=5.05;v+=0.25){ | |
1938 | TH1F *dummy=ComputeELossHisto(2,v,hEll,e); | |
1939 | Double_t avgloss=dummy->GetMean(); | |
1940 | gg->SetPoint(i,v,avgloss);i++; | |
1941 | delete dummy; | |
1942 | } | |
1943 | gg->SetMarkerStyle(24); | |
1944 | gg->Draw("pl"); | |
1945 | ||
7258586f | 1946 | TGraph *gratio=new TGraph(20); |
7e7b00ac | 1947 | for(i=0;i<20;i++){ |
7258586f | 1948 | Double_t x,y,x2,y2; |
1949 | gg->GetPoint(i,x,y); | |
1950 | gq->GetPoint(i,x2,y2); | |
1951 | if(y2>0) | |
1952 | gratio->SetPoint(i,x,y/y2*10/2.25); | |
1953 | else gratio->SetPoint(i,x,0); | |
1954 | } | |
1955 | gratio->SetLineStyle(4); | |
9175f0df | 1956 | //gratio->Draw(); |
7258586f | 1957 | |
b6d061b7 | 1958 | TLegend *l1a = new TLegend(0.5,0.6,.95,0.8); |
1959 | l1a->SetFillStyle(0); | |
1960 | l1a->SetBorderSize(0); | |
1961 | Char_t label[100]; | |
1962 | sprintf(label,"<L> = %.2f fm",hEll->GetMean()); | |
1963 | l1a->AddEntry(gq,label,""); | |
1964 | l1a->AddEntry(gq,"quark","pl"); | |
1965 | l1a->AddEntry(gg,"gluon","pl"); | |
9175f0df | 1966 | //l1a->AddEntry(gratio,"gluon/quark/2.25*10","pl"); |
b6d061b7 | 1967 | l1a->Draw(); |
1968 | ||
1969 | c->Update(); | |
1970 | } | |
1971 | ||
9d851d20 | 1972 | void AliQuenchingWeights::PlotAvgELossVsL(Double_t e) const |
b6d061b7 | 1973 | { |
7258586f | 1974 | // plot average energy loss versus ell |
7a76a12e | 1975 | |
b6d061b7 | 1976 | if(!fTablesLoaded){ |
7258586f | 1977 | Error("PlotAvgELossVsEll","Tables are not loaded."); |
1978 | return; | |
1979 | } | |
1980 | ||
1981 | Char_t title[1024]; | |
1982 | Char_t name[1024]; | |
1983 | Float_t medval; | |
1984 | if(fMultSoft){ | |
1985 | sprintf(title,"Average Energy Loss for Multiple Scattering"); | |
1986 | sprintf(name,"cavgelosslms"); | |
1987 | medval=fQTransport; | |
1988 | } else { | |
1989 | sprintf(title,"Average Energy Loss for Single Hard Scattering"); | |
1990 | sprintf(name,"cavgelosslsh"); | |
1991 | medval=fMu; | |
1992 | } | |
1993 | ||
1994 | TCanvas *c = new TCanvas(name,title,0,0,600,400); | |
1995 | c->cd(); | |
1996 | TH2F *hframe = new TH2F("avglossell",title,2,0,fLengthMax,2,0,250); | |
1997 | hframe->SetStats(0); | |
1998 | hframe->SetXTitle("length [fm]"); | |
1999 | hframe->SetYTitle("<E_{loss}> [GeV]"); | |
2000 | hframe->Draw(); | |
2001 | ||
2002 | TGraph *gq=new TGraph((Int_t)fLengthMax*4); | |
2003 | Int_t i=0; | |
2004 | for(Double_t v=0.25;v<=fLengthMax;v+=0.25){ | |
2005 | TH1F *dummy=ComputeELossHisto(1,medval,v,e); | |
2006 | Double_t avgloss=dummy->GetMean(); | |
2007 | gq->SetPoint(i,v,avgloss);i++; | |
2008 | delete dummy; | |
2009 | } | |
2010 | gq->SetMarkerStyle(20); | |
2011 | gq->Draw("pl"); | |
2012 | ||
2013 | TGraph *gg=new TGraph((Int_t)fLengthMax*4); | |
2014 | i=0; | |
2015 | for(Double_t v=0.25;v<=fLengthMax;v+=0.25){ | |
2016 | TH1F *dummy=ComputeELossHisto(2,medval,v,e); | |
2017 | Double_t avgloss=dummy->GetMean(); | |
2018 | gg->SetPoint(i,v,avgloss);i++; | |
2019 | delete dummy; | |
2020 | } | |
2021 | gg->SetMarkerStyle(24); | |
2022 | gg->Draw("pl"); | |
2023 | ||
2024 | TGraph *gratio=new TGraph((Int_t)fLengthMax*4); | |
7e7b00ac | 2025 | for(i=0;i<=(Int_t)fLengthMax*4;i++){ |
7258586f | 2026 | Double_t x,y,x2,y2; |
2027 | gg->GetPoint(i,x,y); | |
2028 | gq->GetPoint(i,x2,y2); | |
2029 | if(y2>0) | |
2030 | gratio->SetPoint(i,x,y/y2*100/2.25); | |
2031 | else gratio->SetPoint(i,x,0); | |
2032 | } | |
2033 | gratio->SetLineStyle(1); | |
2034 | gratio->SetLineWidth(2); | |
2035 | gratio->Draw(); | |
2036 | TLegend *l1a = new TLegend(0.15,0.65,.60,0.85); | |
2037 | l1a->SetFillStyle(0); | |
2038 | l1a->SetBorderSize(0); | |
2039 | Char_t label[100]; | |
2040 | if(fMultSoft) | |
2041 | sprintf(label,"#hat{q} = %.2f GeV^{2}/fm",medval); | |
2042 | else | |
2043 | sprintf(label,"#mu = %.2f GeV",medval); | |
2044 | l1a->AddEntry(gq,label,""); | |
2045 | l1a->AddEntry(gq,"quark","pl"); | |
2046 | l1a->AddEntry(gg,"gluon","pl"); | |
2047 | l1a->AddEntry(gratio,"gluon/quark/2.25*100","pl"); | |
2048 | l1a->Draw(); | |
2049 | ||
2050 | TF1 *f=new TF1("f","100",0,fLengthMax); | |
2051 | f->SetLineStyle(4); | |
2052 | f->SetLineWidth(1); | |
2053 | f->Draw("same"); | |
2054 | c->Update(); | |
2055 | } | |
2056 | ||
2057 | void AliQuenchingWeights::PlotAvgELossVsPt(Double_t medval,Double_t len) const | |
2058 | { | |
2059 | // plot relative energy loss for given | |
2060 | // length and parton energy versus pt | |
2061 | ||
2062 | if(!fTablesLoaded){ | |
2063 | Error("PlotAvgELossVsPt","Tables are not loaded."); | |
b6d061b7 | 2064 | return; |
2065 | } | |
2066 | ||
2067 | Char_t title[1024]; | |
2068 | Char_t name[1024]; | |
2069 | if(fMultSoft){ | |
7258586f | 2070 | sprintf(title,"Relative Energy Loss for Multiple Scattering"); |
b6d061b7 | 2071 | sprintf(name,"cavgelossvsptms"); |
2072 | } else { | |
7258586f | 2073 | sprintf(title,"Relative Energy Loss for Single Hard Scattering"); |
b6d061b7 | 2074 | sprintf(name,"cavgelossvsptsh"); |
2075 | } | |
2076 | ||
2077 | TCanvas *c = new TCanvas(name,title,0,0,500,400); | |
2078 | c->cd(); | |
2079 | TH2F *hframe = new TH2F("havglossvspt",title,2,0,100,2,0,1); | |
2080 | hframe->SetStats(0); | |
2081 | hframe->SetXTitle("p_{T} [GeV]"); | |
2082 | hframe->SetYTitle("<E_{loss}>/p_{T} [GeV]"); | |
2083 | hframe->Draw(); | |
2084 | ||
2085 | TGraph *gq=new TGraph(40); | |
2086 | Int_t i=0; | |
2087 | for(Double_t pt=2.5;pt<=100.05;pt+=2.5){ | |
2088 | TH1F *dummy=ComputeELossHisto(1,medval,len,pt); | |
2089 | Double_t avgloss=dummy->GetMean(); | |
2090 | gq->SetPoint(i,pt,avgloss/pt);i++; | |
2091 | delete dummy; | |
2092 | } | |
2093 | gq->SetMarkerStyle(20); | |
2094 | gq->Draw("pl"); | |
2095 | ||
2096 | TGraph *gg=new TGraph(40); | |
2097 | i=0; | |
2098 | for(Double_t pt=2.5;pt<=100.05;pt+=2.5){ | |
2099 | TH1F *dummy=ComputeELossHisto(2,medval,len,pt); | |
2100 | Double_t avgloss=dummy->GetMean(); | |
2101 | gg->SetPoint(i,pt,avgloss/pt);i++; | |
2102 | delete dummy; | |
2103 | } | |
2104 | gg->SetMarkerStyle(24); | |
2105 | gg->Draw("pl"); | |
2106 | ||
2107 | TLegend *l1a = new TLegend(0.5,0.6,.95,0.8); | |
2108 | l1a->SetFillStyle(0); | |
2109 | l1a->SetBorderSize(0); | |
2110 | Char_t label[100]; | |
7258586f | 2111 | sprintf(label,"L = %.1f fm",len); |
b6d061b7 | 2112 | l1a->AddEntry(gq,label,""); |
2113 | l1a->AddEntry(gq,"quark","pl"); | |
2114 | l1a->AddEntry(gg,"gluon","pl"); | |
2115 | l1a->Draw(); | |
2116 | ||
2117 | c->Update(); | |
2118 | } | |
2119 | ||
2120 | void AliQuenchingWeights::PlotAvgELossVsPt(Double_t medval,TH1F *hEll) const | |
2121 | { | |
7258586f | 2122 | // plot relative energy loss for given |
2123 | // length distribution and parton energy versus pt | |
7a76a12e | 2124 | |
b6d061b7 | 2125 | if(!fTablesLoaded){ |
7258586f | 2126 | Error("PlotAvgELossVsPt","Tables are not loaded."); |
b6d061b7 | 2127 | return; |
2128 | } | |
2129 | ||
2130 | Char_t title[1024]; | |
2131 | Char_t name[1024]; | |
2132 | if(fMultSoft){ | |
7258586f | 2133 | sprintf(title,"Relative Energy Loss for Multiple Scattering"); |
b6d061b7 | 2134 | sprintf(name,"cavgelossvsptms2"); |
2135 | } else { | |
7258586f | 2136 | sprintf(title,"Relative Energy Loss for Single Hard Scattering"); |
b6d061b7 | 2137 | sprintf(name,"cavgelossvsptsh2"); |
2138 | } | |
2139 | TCanvas *c = new TCanvas(name,title,0,0,500,400); | |
2140 | c->cd(); | |
2141 | TH2F *hframe = new TH2F("havglossvspt",title,2,0,100,2,0,1); | |
2142 | hframe->SetStats(0); | |
2143 | hframe->SetXTitle("p_{T} [GeV]"); | |
2144 | hframe->SetYTitle("<E_{loss}>/p_{T} [GeV]"); | |
2145 | hframe->Draw(); | |
2146 | ||
2147 | TGraph *gq=new TGraph(40); | |
2148 | Int_t i=0; | |
2149 | for(Double_t pt=2.5;pt<=100.05;pt+=2.5){ | |
2150 | TH1F *dummy=ComputeELossHisto(1,medval,hEll,pt); | |
2151 | Double_t avgloss=dummy->GetMean(); | |
2152 | gq->SetPoint(i,pt,avgloss/pt);i++; | |
2153 | delete dummy; | |
2154 | } | |
2155 | gq->SetMarkerStyle(20); | |
2156 | gq->Draw("pl"); | |
2157 | ||
2158 | TGraph *gg=new TGraph(40); | |
2159 | i=0; | |
2160 | for(Double_t pt=2.5;pt<=100.05;pt+=2.5){ | |
2161 | TH1F *dummy=ComputeELossHisto(2,medval,hEll,pt); | |
2162 | Double_t avgloss=dummy->GetMean(); | |
2163 | gg->SetPoint(i,pt,avgloss/pt);i++; | |
2164 | delete dummy; | |
2165 | } | |
2166 | gg->SetMarkerStyle(24); | |
2167 | gg->Draw("pl"); | |
2168 | ||
2169 | TLegend *l1a = new TLegend(0.5,0.6,.95,0.8); | |
2170 | l1a->SetFillStyle(0); | |
2171 | l1a->SetBorderSize(0); | |
2172 | Char_t label[100]; | |
2173 | sprintf(label,"<L> = %.2f fm",hEll->GetMean()); | |
2174 | l1a->AddEntry(gq,label,""); | |
2175 | l1a->AddEntry(gq,"quark","pl"); | |
2176 | l1a->AddEntry(gg,"gluon","pl"); | |
2177 | l1a->Draw(); | |
2178 | ||
2179 | c->Update(); | |
2180 | } | |
2181 | ||
7258586f | 2182 | Int_t AliQuenchingWeights::GetIndex(Double_t len) const |
2183 | { | |
b90de01a | 2184 | //get the index according to length |
7258586f | 2185 | if(len>fLengthMax) len=fLengthMax; |
2186 | ||
9d851d20 | 2187 | Int_t l=Int_t(len/0.25); |
cc885e36 | 2188 | if((len-l*0.25)>0.125) l++; |
7258586f | 2189 | return l; |
2190 | } | |
ea16e52f | 2191 |