| 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 | |
| 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 | // |
| 7a76a12e |
26 | // |
| b6d061b7 |
27 | // Origin: C. Loizides constantinos.loizides@cern.ch |
| 28 | // A. Dainese andrea.dainese@pd.infn.it |
| 7a76a12e |
29 | // |
| 7258586f |
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 | //----------------------------------------------------------------------------- |
| b6d061b7 |
35 | |
| 36 | #include <Riostream.h> |
| 7258586f |
37 | #include <TF1.h> |
| b6d061b7 |
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 |
| 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 |
| 56 | const Int_t AliQuenchingWeights::fgBins = 1300; |
| 57 | const Double_t AliQuenchingWeights::fgMaxBin = 1.3; |
| 58 | |
| b6d061b7 |
59 | // counter for histogram labels |
| 7a76a12e |
60 | Int_t AliQuenchingWeights::fgCounter = 0; |
| b6d061b7 |
61 | |
| 7258586f |
62 | |
| b6d061b7 |
63 | AliQuenchingWeights::AliQuenchingWeights() |
| 64 | : TObject() |
| 65 | { |
| 7a76a12e |
66 | //default constructor |
| 67 | |
| b6d061b7 |
68 | fTablesLoaded=kFALSE; |
| 69 | fMultSoft=kTRUE; |
| 70 | fHistos=0; |
| 71 | SetMu(); |
| 72 | SetQTransport(); |
| 7258586f |
73 | SetK(); |
| ea16e52f |
74 | fECMethod=kReweight; //this is to force printout |
| b6d061b7 |
75 | SetECMethod(); |
| 76 | SetLengthMax(); |
| 77 | fLengthMaxOld=0; |
| 7a76a12e |
78 | fInstanceNumber=fgCounter++; |
| 7258586f |
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.); |
| b6d061b7 |
84 | } |
| 85 | |
| 86 | AliQuenchingWeights::AliQuenchingWeights(const AliQuenchingWeights& a) |
| 87 | : TObject() |
| 88 | { |
| 7258586f |
89 | // copy constructor |
| 7a76a12e |
90 | |
| b6d061b7 |
91 | fTablesLoaded=kFALSE; |
| 92 | fHistos=0; |
| 93 | fLengthMaxOld=0; |
| 94 | fMultSoft=a.GetMultSoft();; |
| 95 | fMu=a.GetMu(); |
| 7258586f |
96 | fK=a.GetK(); |
| b6d061b7 |
97 | fQTransport=a.GetQTransport(); |
| 98 | fECMethod=(kECMethod)a.GetECMethod(); |
| 99 | fLengthMax=a.GetLengthMax(); |
| 7a76a12e |
100 | fInstanceNumber=fgCounter++; |
| 7258586f |
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 | |
| b6d061b7 |
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(); |
| 7258586f |
114 | delete fHisto; |
| b6d061b7 |
115 | } |
| 116 | |
| 117 | void AliQuenchingWeights::Reset() |
| 118 | { |
| 7a76a12e |
119 | //reset tables if there were used |
| 120 | |
| b6d061b7 |
121 | if(!fHistos) return; |
| 7258586f |
122 | for(Int_t l=0;l<2*fLengthMaxOld;l++){ |
| b6d061b7 |
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 | { |
| 7a76a12e |
133 | //set energy constraint method |
| 134 | |
| ea16e52f |
135 | if(fECMethod==type) return; |
| b6d061b7 |
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)); |
| bb545331 |
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 |
| b6d061b7 |
158 | if(!fincont.is_open()) return -1; |
| bb545331 |
159 | #endif |
| b6d061b7 |
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]>> |
| 7a76a12e |
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]) |
| b6d061b7 |
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]>> |
| 7a76a12e |
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 | { |
| b6d061b7 |
183 | nn++; |
| 184 | if(nn==261) break; |
| 185 | } |
| 186 | fincont.close(); |
| 187 | |
| 188 | sprintf(fname,"%s",gSystem->ExpandPathName(discall)); |
| bb545331 |
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 |
| b6d061b7 |
194 | if(!findisc.is_open()) return -1; |
| bb545331 |
195 | #endif |
| b6d061b7 |
196 | |
| 197 | nn=0; //quarks |
| 198 | while(findisc>>frrr[nn]>>fdaq[nn]) { |
| 199 | nn++; |
| 7a76a12e |
200 | if(nn==34) break; |
| b6d061b7 |
201 | } |
| 202 | nn=0; //gluons |
| 203 | while(findisc>>frrrg[nn]>>fdag[nn]) { |
| 204 | nn++; |
| 7a76a12e |
205 | if(nn==34) break; |
| b6d061b7 |
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 |
| 7a76a12e |
242 | C urs.wiedemann@cern.ch |
| 243 | C carlos.salgado@cern.ch |
| 244 | C |
| 245 | C |
| b6d061b7 |
246 | C------------------------------------------------------------------- |
| 247 | |
| 248 | SUBROUTINE swqmult(ipart,rrrr,xxxx,continuous,discrete) |
| 249 | * |
| 7a76a12e |
250 | REAL*8 xx(400), daq(34), caq(34,261), rrr(34) |
| b6d061b7 |
251 | COMMON /dataqua/ xx, daq, caq, rrr |
| 252 | * |
| 7a76a12e |
253 | REAL*8 xxg(400), dag(34), cag(34,261), rrrg(34) |
| b6d061b7 |
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 | * |
| 7a76a12e |
263 | |
| 264 | continuous=0.d0 |
| 265 | discrete=0.d0 |
| 266 | |
| b6d061b7 |
267 | rrin = rrrr |
| 268 | xxin = xxxx |
| 269 | * |
| 7a76a12e |
270 | do 666, nr=1,34 |
| b6d061b7 |
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) |
| 7a76a12e |
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 |
| b6d061b7 |
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 | |
| 7a76a12e |
321 | 245 continue |
| 322 | |
| b6d061b7 |
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 |
| 7a76a12e |
332 | REAL*8 xxq(400), daq(34), caq(34,261), rrr(34) |
| b6d061b7 |
333 | COMMON /dataqua/ xxq, daq, caq, rrr |
| 334 | * |
| 7a76a12e |
335 | REAL*8 xxg(400), dag(34), cag(34,261), rrrg(34) |
| b6d061b7 |
336 | COMMON /dataglu/ xxg, dag, cag, rrrg |
| 337 | * |
| 7a76a12e |
338 | OPEN(UNIT=20,FILE='contnew.all',STATUS='OLD',ERR=90) |
| b6d061b7 |
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), |
| 7a76a12e |
350 | + caq(29,nn), caq(30,nn), caq(31,nn), caq(32,nn), |
| 351 | + caq(33,nn), caq(34,nn) |
| b6d061b7 |
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), |
| 7a76a12e |
364 | + cag(29,nn), cag(30,nn), cag(31,nn), cag(32,nn), |
| 365 | + cag(33,nn), cag(34,nn) |
| b6d061b7 |
366 | 111 continue |
| 367 | close(20) |
| 368 | * |
| 7a76a12e |
369 | OPEN(UNIT=21,FILE='discnew.all',STATUS='OLD',ERR=91) |
| 370 | do 112 nn=1,34 |
| b6d061b7 |
371 | read (21,*) rrr(nn), daq(nn) |
| 372 | 112 continue |
| 7a76a12e |
373 | do 113 nn=1,34 |
| b6d061b7 |
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 | |
| 7a76a12e |
385 | |
| b6d061b7 |
386 | ======================================================================= |
| 387 | |
| 388 | Adapted to ROOT macro by A. Dainese - 13/07/2003 |
| 7a76a12e |
389 | Ported to class by C. Loizides - 12/02/2004 |
| 390 | New version for extended R values added - 06/03/2004 |
| b6d061b7 |
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 | |
| 7a76a12e |
400 | //set result to zero |
| 401 | continuous=0.; |
| 402 | discrete=0.; |
| 403 | |
| 7258586f |
404 | //read-in data before first call |
| b6d061b7 |
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 | |
| 7a76a12e |
417 | if(xxin>fxx[260]) return -1; |
| b6d061b7 |
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? |
| 7a76a12e |
424 | if(rrin<=frrr[33]) rrin = 1.05*frrr[33]; // AD |
| b6d061b7 |
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; |
| 7a76a12e |
429 | for(Int_t nr=1; nr<=34; nr++) { |
| b6d061b7 |
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 | |
| 7a76a12e |
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 | |
| b6d061b7 |
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", |
| 7258586f |
478 | //rfraclow,clow,rfrachigh,chigh,continuous); |
| b6d061b7 |
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)); |
| bb545331 |
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 |
| b6d061b7 |
504 | if(!fincont.is_open()) return -1; |
| bb545331 |
505 | #endif |
| b6d061b7 |
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)); |
| bb545331 |
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 |
| b6d061b7 |
547 | if(!findisc.is_open()) return -1; |
| bb545331 |
548 | #endif |
| b6d061b7 |
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){ |
| 7258586f |
727 | Error("CalcSingleHard","Tables are not loaded."); |
| b6d061b7 |
728 | return -1; |
| 729 | } |
| 730 | if(!fMultSoft){ |
| 7258586f |
731 | Error("CalcSingleHard","Tables are not loaded for Single Hard Scattering."); |
| b6d061b7 |
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 | { |
| 7a76a12e |
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 | |
| b6d061b7 |
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 | { |
| 7a76a12e |
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 | |
| b6d061b7 |
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 | { |
| 7a76a12e |
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); |
| b6d061b7 |
826 | return -R; |
| 827 | } |
| 828 | return R; |
| 829 | } |
| 830 | |
| 7258586f |
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 | |
| b6d061b7 |
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); |
| 7258586f |
859 | return -1000.; |
| b6d061b7 |
860 | } |
| 861 | |
| 7258586f |
862 | Int_t l=GetIndex(length); |
| b6d061b7 |
863 | if(l<=0) return 0.; |
| b6d061b7 |
864 | |
| 865 | if(fECMethod==kReweight){ |
| 866 | TH1F *dummy=new TH1F(*fHistos[ipart-1][l-1]); |
| 867 | dummy->SetName("dummy"); |
| 7258586f |
868 | for(Int_t bin=dummy->FindBin(e)+1;bin<=fgBins;bin++){ |
| b6d061b7 |
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 | |
| e99e3ed5 |
896 | Double_t AliQuenchingWeights::GetELossRandom(Int_t ipart, TH1F *hell, Double_t e) const |
| b6d061b7 |
897 | { |
| 7a76a12e |
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 | |
| b6d061b7 |
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 | |
| 7258586f |
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 | |
| b6d061b7 |
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){ |
| 7258586f |
999 | Error("SampleEnergyLoss","Tables are not loaded."); |
| b6d061b7 |
1000 | return -1; |
| 1001 | } |
| 1002 | |
| 1003 | if(fMultSoft) { |
| 1004 | Int_t lmax=CalcLengthMax(fQTransport); |
| 1005 | if(fLengthMax>lmax){ |
| 7a76a12e |
1006 | Info("SampleEnergyLoss","Maximum length changed from %d to %d;\nin order to have R < %.f",fLengthMax,lmax,fgkRMax); |
| b6d061b7 |
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]; |
| 7258586f |
1015 | fHistos[0]=new TH1F*[2*fLengthMax]; |
| 1016 | fHistos[1]=new TH1F*[2*fLengthMax]; |
| b6d061b7 |
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++){ |
| 7258586f |
1031 | for(Int_t l=1;l<=2*fLengthMax;l++){ |
| b6d061b7 |
1032 | Char_t hname[100]; |
| 1033 | sprintf(hname,"hDisc-ContQW_%s_%d_%d_%d_%d",meddesc,fInstanceNumber,ipart,medvalue,l); |
| 7258586f |
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); |
| b6d061b7 |
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 | |
| 7258586f |
1041 | Double_t rrrr = CalcR(wc,len); |
| b6d061b7 |
1042 | Double_t discrete=0.; |
| 1043 | // loop on histogram channels |
| 7258586f |
1044 | for(Int_t bin=1; bin<=fgBins; bin++) { |
| b6d061b7 |
1045 | Double_t xxxx = fHistos[ipart-1][l-1]->GetBinCenter(bin)/wc; |
| 1046 | Double_t continuous; |
| 7258586f |
1047 | if(fMultSoft) |
| 1048 | CalcMult(ipart,rrrr,xxxx,continuous,discrete); |
| 1049 | else |
| 1050 | CalcSingleHard(ipart,rrrr,xxxx,continuous,discrete); |
| b6d061b7 |
1051 | fHistos[ipart-1][l-1]->SetBinContent(bin,continuous); |
| 1052 | } |
| 1053 | // add discrete part to distribution |
| 1054 | if(discrete>=1.) |
| 7258586f |
1055 | for(Int_t bin=2;bin<=fgBins;bin++) |
| b6d061b7 |
1056 | fHistos[ipart-1][l-1]->SetBinContent(bin,0.); |
| 1057 | else { |
| 7258586f |
1058 | Double_t val=discrete/(1.-discrete)*fHistos[ipart-1][l-1]->Integral(1,fgBins); |
| b6d061b7 |
1059 | fHistos[ipart-1][l-1]->Fill(0.,val); |
| 1060 | } |
| 7258586f |
1061 | Double_t hint=fHistos[ipart-1][l-1]->Integral(1,fgBins); |
| b6d061b7 |
1062 | fHistos[ipart-1][l-1]->Scale(1./hint); |
| 1063 | } |
| 1064 | } |
| 1065 | return 0; |
| 1066 | } |
| 1067 | |
| 7258586f |
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 |
| b6d061b7 |
1119 | { |
| 7a76a12e |
1120 | //return quenching histograms |
| 1121 | //for ipart and length |
| 1122 | |
| b6d061b7 |
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 | |
| 7258586f |
1132 | Int_t l=GetIndex(length); |
| b6d061b7 |
1133 | if(l<=0) return 0; |
| b6d061b7 |
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: |
| 7258586f |
1144 | // - continuous weight, as a function of dE/wc |
| b6d061b7 |
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 | |
| 7258586f |
1160 | TH1F *hist = new TH1F("hist",hname,fgBins,0.,fgMaxBin*wc); |
| b6d061b7 |
1161 | hist->SetXTitle("#Delta E [GeV]"); |
| 1162 | hist->SetYTitle("p(#Delta E)"); |
| 1163 | hist->SetLineColor(4); |
| 1164 | |
| 1165 | Double_t rrrr = CalcR(wc,length); |
| 7258586f |
1166 | //loop on histogram channels |
| 1167 | for(Int_t bin=1; bin<=fgBins; bin++) { |
| b6d061b7 |
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: |
| 7258586f |
1189 | // - continuous weight, as a function of dE/wc |
| b6d061b7 |
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 | |
| 7258586f |
1205 | TH1F *histx = new TH1F("histx",hname,fgBins,0.,fgMaxBin); |
| b6d061b7 |
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); |
| 7258586f |
1214 | //loop on histogram channels |
| 1215 | for(Int_t bin=1; bin<=fgBins; bin++) { |
| b6d061b7 |
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 | |
| 7258586f |
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 | |
| e99e3ed5 |
1282 | TH1F* AliQuenchingWeights::ComputeELossHisto(Int_t ipart,Double_t medval,Double_t l,Double_t e) const |
| b6d061b7 |
1283 | { |
| 7258586f |
1284 | // compute energy loss histogram for |
| 1285 | // parton type, medium value, length and energy |
| 7a76a12e |
1286 | |
| b6d061b7 |
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 | } |
| b6d061b7 |
1313 | h->SetStats(kTRUE); |
| b6d061b7 |
1314 | delete dummy; |
| 1315 | return h; |
| 1316 | } |
| 1317 | |
| e99e3ed5 |
1318 | TH1F* AliQuenchingWeights::ComputeELossHisto(Int_t ipart,Double_t medval,TH1F *hEll,Double_t e) const |
| b6d061b7 |
1319 | { |
| 7258586f |
1320 | // compute energy loss histogram for |
| 1321 | // parton type, medium value, |
| 1322 | // length distribution and energy |
| 7a76a12e |
1323 | |
| b6d061b7 |
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 | } |
| b6d061b7 |
1350 | h->SetStats(kTRUE); |
| b6d061b7 |
1351 | delete dummy; |
| 1352 | return h; |
| 1353 | } |
| 1354 | |
| 7258586f |
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 |
| b6d061b7 |
1413 | { |
| 7258586f |
1414 | // plot discrete weights for given length |
| 7a76a12e |
1415 | |
| b6d061b7 |
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; |
| 7258586f |
1437 | CalcMult(1,1.0,q,len,cont,disc); |
| b6d061b7 |
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; |
| 7258586f |
1443 | CalcSingleHard(1,1.0,m,len,cont, disc); |
| b6d061b7 |
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; |
| 7258586f |
1455 | CalcMult(2,1.0,q,len,cont,disc); |
| b6d061b7 |
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; |
| 7258586f |
1461 | CalcSingleHard(2,1.0,m,len,cont,disc); |
| b6d061b7 |
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]; |
| 7258586f |
1472 | sprintf(label,"L = %.1f fm",len); |
| b6d061b7 |
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 | |
| 7258586f |
1481 | void AliQuenchingWeights::PlotContWeights(Int_t itype,Double_t ell) const |
| b6d061b7 |
1482 | { |
| 7258586f |
1483 | // plot continous weights for |
| 1484 | // given parton type and length |
| 7a76a12e |
1485 | |
| b6d061b7 |
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]; |
| 7258586f |
1528 | sprintf(label,"L = %.1f fm",ell); |
| b6d061b7 |
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 | |
| 7258586f |
1550 | void AliQuenchingWeights::PlotContWeightsVsL(Int_t itype,Double_t medval) const |
| b6d061b7 |
1551 | { |
| 7258586f |
1552 | // plot continous weights for |
| 1553 | // given parton type and medium value |
| 7a76a12e |
1554 | |
| b6d061b7 |
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 | |
| 7258586f |
1607 | void AliQuenchingWeights::PlotAvgELoss(Double_t len,Double_t e) const |
| b6d061b7 |
1608 | { |
| 7258586f |
1609 | // plot average energy loss for given length |
| 1610 | // and parton energy |
| 7a76a12e |
1611 | |
| b6d061b7 |
1612 | if(!fTablesLoaded){ |
| 7258586f |
1613 | Error("PlotAvgELoss","Tables are not loaded."); |
| b6d061b7 |
1614 | return; |
| 1615 | } |
| 1616 | |
| 1617 | Char_t title[1024]; |
| 1618 | Char_t name[1024]; |
| 1619 | if(fMultSoft){ |
| 7258586f |
1620 | sprintf(title,"Average Energy Loss for Multiple Scattering"); |
| b6d061b7 |
1621 | sprintf(name,"cavgelossms"); |
| 1622 | } else { |
| 7258586f |
1623 | sprintf(title,"Average Energy Loss for Single Hard Scattering"); |
| b6d061b7 |
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 | |
| 7258586f |
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(); |
| b6d061b7 |
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]; |
| 7258586f |
1675 | sprintf(label,"L = %.1f fm",len); |
| b6d061b7 |
1676 | l1a->AddEntry(gq,label,""); |
| 1677 | l1a->AddEntry(gq,"quark","pl"); |
| 1678 | l1a->AddEntry(gg,"gluon","pl"); |
| 7258586f |
1679 | l1a->AddEntry(gratio,"gluon/quark/2.25*10","pl"); |
| b6d061b7 |
1680 | l1a->Draw(); |
| 1681 | |
| 1682 | c->Update(); |
| 1683 | } |
| 1684 | |
| e99e3ed5 |
1685 | void AliQuenchingWeights::PlotAvgELoss(TH1F *hEll,Double_t e) const |
| b6d061b7 |
1686 | { |
| 7258586f |
1687 | // plot average energy loss for given |
| 1688 | // length distribution and parton energy |
| 7a76a12e |
1689 | |
| b6d061b7 |
1690 | if(!fTablesLoaded){ |
| 7258586f |
1691 | Error("PlotAvgELossVs","Tables are not loaded."); |
| b6d061b7 |
1692 | return; |
| 1693 | } |
| 1694 | |
| 1695 | Char_t title[1024]; |
| 1696 | Char_t name[1024]; |
| 1697 | if(fMultSoft){ |
| 7258586f |
1698 | sprintf(title,"Average Energy Loss for Multiple Scattering"); |
| b6d061b7 |
1699 | sprintf(name,"cavgelossms2"); |
| 1700 | } else { |
| 7258586f |
1701 | sprintf(title,"Average Energy Loss for Single Hard Scattering"); |
| b6d061b7 |
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 | |
| 7258586f |
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 | |
| b6d061b7 |
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"); |
| 7258586f |
1758 | l1a->AddEntry(gratio,"gluon/quark/2.25*10","pl"); |
| b6d061b7 |
1759 | l1a->Draw(); |
| 1760 | |
| 1761 | c->Update(); |
| 1762 | } |
| 1763 | |
| 7258586f |
1764 | void AliQuenchingWeights::PlotAvgELossVsEll(Double_t e) const |
| b6d061b7 |
1765 | { |
| 7258586f |
1766 | // plot average energy loss versus ell |
| 7a76a12e |
1767 | |
| b6d061b7 |
1768 | if(!fTablesLoaded){ |
| 7258586f |
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."); |
| b6d061b7 |
1856 | return; |
| 1857 | } |
| 1858 | |
| 1859 | Char_t title[1024]; |
| 1860 | Char_t name[1024]; |
| 1861 | if(fMultSoft){ |
| 7258586f |
1862 | sprintf(title,"Relative Energy Loss for Multiple Scattering"); |
| b6d061b7 |
1863 | sprintf(name,"cavgelossvsptms"); |
| 1864 | } else { |
| 7258586f |
1865 | sprintf(title,"Relative Energy Loss for Single Hard Scattering"); |
| b6d061b7 |
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]; |
| 7258586f |
1903 | sprintf(label,"L = %.1f fm",len); |
| b6d061b7 |
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 | { |
| 7258586f |
1914 | // plot relative energy loss for given |
| 1915 | // length distribution and parton energy versus pt |
| 7a76a12e |
1916 | |
| b6d061b7 |
1917 | if(!fTablesLoaded){ |
| 7258586f |
1918 | Error("PlotAvgELossVsPt","Tables are not loaded."); |
| b6d061b7 |
1919 | return; |
| 1920 | } |
| 1921 | |
| 1922 | Char_t title[1024]; |
| 1923 | Char_t name[1024]; |
| 1924 | if(fMultSoft){ |
| 7258586f |
1925 | sprintf(title,"Relative Energy Loss for Multiple Scattering"); |
| b6d061b7 |
1926 | sprintf(name,"cavgelossvsptms2"); |
| 1927 | } else { |
| 7258586f |
1928 | sprintf(title,"Relative Energy Loss for Single Hard Scattering"); |
| b6d061b7 |
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 | |
| 7258586f |
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 | } |
| ea16e52f |
1982 | |
git://git.uio.no / u / mrichter / AliRoot.git / blame