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