1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
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
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]
27 // Origin: C. Loizides constantinos.loizides@cern.ch
28 // A. Dainese andrea.dainese@pd.infn.it
30 //=================== Added by C. Loizides 27/03/04 ===========================
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 //-----------------------------------------------------------------------------
36 #include <Riostream.h>
45 #include "AliQuenchingWeights.h"
47 ClassImp(AliQuenchingWeights)
49 // conversion from fm to GeV^-1: 1 fm = fmGeV GeV^-1
50 const Double_t AliQuenchingWeights::fgkConvFmToInvGeV = 1./0.197;
53 const Double_t AliQuenchingWeights::fgkRMax = 1.e6;
56 const Int_t AliQuenchingWeights::fgkBins = 1300;
57 const Double_t AliQuenchingWeights::fgkMaxBin = 1.3;
59 // counter for histogram labels
60 Int_t AliQuenchingWeights::fgCounter = 0;
63 AliQuenchingWeights::AliQuenchingWeights()
78 fInstanceNumber=fgCounter++;
80 sprintf(name,"hhistoqw_%d",fInstanceNumber);
81 fHisto = new TH1F(name,"",fgkBins,0.,fgkMaxBin);
82 for(Int_t bin=1;bin<=fgkBins;bin++)
83 fHisto->SetBinContent(bin,0.);
86 AliQuenchingWeights::AliQuenchingWeights(const AliQuenchingWeights& a)
94 fMultSoft=a.GetMultSoft();;
97 fQTransport=a.GetQTransport();
98 fECMethod=(kECMethod)a.GetECMethod();
99 fLengthMax=a.GetLengthMax();
100 fInstanceNumber=fgCounter++;
102 sprintf(name,"hhistoqw_%d",fInstanceNumber);
103 fHisto = new TH1F(name,"",fgkBins,0.,fgkMaxBin);
104 for(Int_t bin=1;bin<=fgkBins;bin++)
105 fHisto->SetBinContent(bin,0.);
107 //Missing in the class is the pathname
108 //to the tables, can be added if needed
111 AliQuenchingWeights::~AliQuenchingWeights()
117 void AliQuenchingWeights::Reset()
119 //reset tables if there were used
122 for(Int_t l=0;l<4*fLengthMaxOld;l++){
123 delete fHistos[0][l];
124 delete fHistos[1][l];
131 void AliQuenchingWeights::SetECMethod(kECMethod type)
133 //set energy constraint method
136 if(fECMethod==kDefault)
137 Info("SetECMethod","Energy Constraint Method set to DEFAULT:\nIf (sampled energy loss > parton energy) then sampled energy loss = parton energy.");
139 Info("SetECMethod","Energy Constraint Method set to REWEIGHT:\nRequire sampled energy loss <= parton energy.");
142 Int_t AliQuenchingWeights::InitMult(const Char_t *contall,const Char_t *discall)
144 // read in tables for multiple scattering approximation
145 // path to continuum and to discrete part
147 fTablesLoaded = kFALSE;
151 sprintf(fname,"%s",gSystem->ExpandPathName(contall));
152 //PH ifstream fincont(fname);
153 fstream fincont(fname,ios::in);
154 #if defined(__HP_aCC) || defined(__DECCXX)
155 if(!fincont.rdbuf()->is_open()) return -1;
157 if(!fincont.is_open()) return -1;
161 while(fincont>>fxx[nn]>>fcaq[0][nn]>>fcaq[1][nn]>>fcaq[2][nn]>>fcaq[3][nn]>>
162 fcaq[4][nn]>>fcaq[5][nn]>>fcaq[6][nn]>>fcaq[7][nn]>>fcaq[8][nn]>>
163 fcaq[9][nn]>>fcaq[10][nn]>>fcaq[11][nn]>>fcaq[12][nn]>>fcaq[13][nn]>>
164 fcaq[14][nn]>>fcaq[15][nn]>>fcaq[16][nn]>>fcaq[17][nn]>>fcaq[18][nn]>>
165 fcaq[19][nn]>>fcaq[20][nn]>>fcaq[21][nn]>>fcaq[22][nn]>>fcaq[23][nn]>>
166 fcaq[24][nn]>>fcaq[25][nn]>>fcaq[26][nn]>>fcaq[27][nn]>>fcaq[28][nn]>>
167 fcaq[29][nn]>>fcaq[30][nn]>>fcaq[31][nn]>>fcaq[32][nn]>>fcaq[33][nn])
174 while(fincont>>fxxg[nn]>>fcag[0][nn]>>fcag[1][nn]>>fcag[2][nn]>>fcag[3][nn]>>
175 fcag[4][nn]>>fcag[5][nn]>>fcag[6][nn]>>fcag[7][nn]>>fcag[8][nn]>>
176 fcag[9][nn]>>fcag[10][nn]>>fcag[11][nn]>>fcag[12][nn]>>fcag[13][nn]>>
177 fcag[14][nn]>>fcag[15][nn]>>fcag[16][nn]>>fcag[17][nn]>>fcag[18][nn]>>
178 fcag[19][nn]>>fcag[20][nn]>>fcag[21][nn]>>fcag[22][nn]>>fcag[23][nn]>>
179 fcag[24][nn]>>fcag[25][nn]>>fcag[26][nn]>>fcag[27][nn]>>fcag[28][nn]>>
180 fcag[29][nn]>>fcag[30][nn]>>fcag[31][nn]>>fcag[32][nn]>>fcag[33][nn])
187 sprintf(fname,"%s",gSystem->ExpandPathName(discall));
188 //PH ifstream findisc(fname);
189 fstream findisc(fname,ios::in);
190 #if defined(__HP_aCC) || defined(__DECCXX)
191 if(!findisc.rdbuf()->is_open()) return -1;
193 if(!findisc.is_open()) return -1;
197 while(findisc>>frrr[nn]>>fdaq[nn]) {
202 while(findisc>>frrrg[nn]>>fdag[nn]) {
207 fTablesLoaded = kTRUE;
212 C***************************************************************************
213 C Quenching Weights for Multiple Soft Scattering
218 C Carlos A. Salgado and Urs A. Wiedemann, hep-ph/0302184.
220 C Carlos A. Salgado and Urs A. Wiedemann Phys.Rev.Lett.89:092303,2002.
223 C This package contains quenching weights for gluon radiation in the
224 C multiple soft scattering approximation.
226 C swqmult returns the quenching weight for a quark (ipart=1) or
227 C a gluon (ipart=2) traversing a medium with transport coeficient q and
228 C length L. The input values are rrrr=0.5*q*L^3 and xxxx=w/wc, where
229 C wc=0.5*q*L^2 and w is the energy radiated. The output values are
230 C the continuous and discrete (prefactor of the delta function) parts
231 C of the quenching weights.
233 C In order to use this routine, the files cont.all and disc.all need to be
234 C in the working directory.
236 C An initialization of the tables is needed by doing call initmult before
239 C Please, send us any comment:
241 C urs.wiedemann@cern.ch
242 C carlos.salgado@cern.ch
245 C-------------------------------------------------------------------
247 SUBROUTINE swqmult(ipart,rrrr,xxxx,continuous,discrete)
249 REAL*8 xx(400), daq(34), caq(34,261), rrr(34)
250 COMMON /dataqua/ xx, daq, caq, rrr
252 REAL*8 xxg(400), dag(34), cag(34,261), rrrg(34)
253 COMMON /dataglu/ xxg, dag, cag, rrrg
255 REAL*8 rrrr,xxxx, continuous, discrete
257 INTEGER nrlow, nrhigh, nxlow, nxhigh
258 REAL*8 rrhigh, rrlow, rfraclow, rfrachigh
259 REAL*8 xfraclow, xfrachigh
270 if (rrin.lt.rrr(nr)) then
282 rfraclow = (rrhigh-rrin)/(rrhigh-rrlow)
283 rfrachigh = (rrin-rrlow)/(rrhigh-rrlow)
284 if (rrin.gt.10000d0) then
285 rfraclow = dlog(rrhigh/rrin)/dlog(rrhigh/rrlow)
286 rfrachigh = dlog(rrin/rrlow)/dlog(rrhigh/rrlow)
289 if (ipart.eq.1.and.rrin.ge.rrr(1)) then
296 if (ipart.ne.1.and.rrin.ge.rrrg(1)) then
303 if (xxxx.ge.xx(261)) go to 245
305 nxlow = int(xxin/0.01) + 1
307 xfraclow = (xx(nxhigh)-xxin)/0.01
308 xfrachigh = (xxin - xx(nxlow))/0.01
311 clow = xfraclow*caq(nrlow,nxlow)+xfrachigh*caq(nrlow,nxhigh)
312 chigh = xfraclow*caq(nrhigh,nxlow)+xfrachigh*caq(nrhigh,nxhigh)
314 clow = xfraclow*cag(nrlow,nxlow)+xfrachigh*cag(nrlow,nxhigh)
315 chigh = xfraclow*cag(nrhigh,nxlow)+xfrachigh*cag(nrhigh,nxhigh)
318 continuous = rfraclow*clow + rfrachigh*chigh
323 discrete = rfraclow*daq(nrlow) + rfrachigh*daq(nrhigh)
325 discrete = rfraclow*dag(nrlow) + rfrachigh*dag(nrhigh)
331 REAL*8 xxq(400), daq(34), caq(34,261), rrr(34)
332 COMMON /dataqua/ xxq, daq, caq, rrr
334 REAL*8 xxg(400), dag(34), cag(34,261), rrrg(34)
335 COMMON /dataglu/ xxg, dag, cag, rrrg
337 OPEN(UNIT=20,FILE='contnew.all',STATUS='OLD',ERR=90)
339 read (20,*) xxq(nn), caq(1,nn), caq(2,nn), caq(3,nn),
340 + caq(4,nn), caq(5,nn), caq(6,nn), caq(7,nn), caq(8,nn),
341 + caq(9,nn), caq(10,nn), caq(11,nn), caq(12,nn),
343 + caq(14,nn), caq(15,nn), caq(16,nn), caq(17,nn),
345 + caq(19,nn), caq(20,nn), caq(21,nn), caq(22,nn),
347 + caq(24,nn), caq(25,nn), caq(26,nn), caq(27,nn),
349 + caq(29,nn), caq(30,nn), caq(31,nn), caq(32,nn),
350 + caq(33,nn), caq(34,nn)
353 read (20,*) xxg(nn), cag(1,nn), cag(2,nn), cag(3,nn),
354 + cag(4,nn), cag(5,nn), cag(6,nn), cag(7,nn), cag(8,nn),
355 + cag(9,nn), cag(10,nn), cag(11,nn), cag(12,nn),
357 + cag(14,nn), cag(15,nn), cag(16,nn), cag(17,nn),
359 + cag(19,nn), cag(20,nn), cag(21,nn), cag(22,nn),
361 + cag(24,nn), cag(25,nn), cag(26,nn), cag(27,nn),
363 + cag(29,nn), cag(30,nn), cag(31,nn), cag(32,nn),
364 + cag(33,nn), cag(34,nn)
368 OPEN(UNIT=21,FILE='discnew.all',STATUS='OLD',ERR=91)
370 read (21,*) rrr(nn), daq(nn)
373 read (21,*) rrrg(nn), dag(nn)
378 90 PRINT*, 'input - output error'
379 91 PRINT*, 'input - output error #2'
385 =======================================================================
387 Adapted to ROOT macro by A. Dainese - 13/07/2003
388 Ported to class by C. Loizides - 12/02/2004
389 New version for extended R values added - 06/03/2004
392 Int_t AliQuenchingWeights::CalcMult(Int_t ipart, Double_t rrrr,Double_t xxxx,
393 Double_t &continuous,Double_t &discrete) const
395 // Calculate Multiple Scattering approx.
396 // weights for given parton type,
397 // rrrr=0.5*q*L^3 and xxxx=w/wc, wc=0.5*q*L^2
403 //read-in data before first call
405 Error("CalcMult","Tables are not loaded.");
409 Error("CalcMult","Tables are not loaded for Multiple Scattering.");
413 Double_t rrin = rrrr;
414 Double_t xxin = xxxx;
416 if(xxin>fxx[260]) return -1;
417 Int_t nxlow = (Int_t)(xxin/0.01) + 1;
418 Int_t nxhigh = nxlow + 1;
419 Double_t xfraclow = (fxx[nxhigh-1]-xxin)/0.01;
420 Double_t xfrachigh = (xxin - fxx[nxlow-1])/0.01;
423 if(rrin<=frrr[33]) rrin = 1.05*frrr[33]; // AD
424 if(rrin>=frrr[0]) rrin = 0.95*frrr[0]; // AD
426 Int_t nrlow=0,nrhigh=0;
427 Double_t rrhigh=0,rrlow=0;
428 for(Int_t nr=1; nr<=34; nr++) {
429 if(rrin<frrr[nr-1]) {
432 rrhigh = frrr[nr-1-1];
442 Double_t rfraclow = (rrhigh-rrin)/(rrhigh-rrlow);
443 Double_t rfrachigh = (rrin-rrlow)/(rrhigh-rrlow);
446 rfraclow = TMath::Log2(rrhigh/rrin)/TMath::Log2(rrhigh/rrlow);
447 rfrachigh = TMath::Log2(rrin/rrlow)/TMath::Log2(rrhigh/rrlow);
449 if((ipart==1) && (rrin>=frrr[0]))
456 if((ipart==2) && (rrin>=frrrg[0]))
464 //printf("R = %f,\nRlow = %f, Rhigh = %f,\nRfraclow = %f, Rfrachigh = %f\n",rrin,rrlow,rrhigh,rfraclow,rfrachigh); // AD
466 Double_t clow=0,chigh=0;
468 clow = xfraclow*fcaq[nrlow-1][nxlow-1]+xfrachigh*fcaq[nrlow-1][nxhigh-1];
469 chigh = xfraclow*fcaq[nrhigh-1][nxlow-1]+xfrachigh*fcaq[nrhigh-1][nxhigh-1];
471 clow = xfraclow*fcag[nrlow-1][nxlow-1]+xfrachigh*fcag[nrlow-1][nxhigh-1];
472 chigh = xfraclow*fcag[nrhigh-1][nxlow-1]+xfrachigh*fcag[nrhigh-1][nxhigh-1];
475 continuous = rfraclow*clow + rfrachigh*chigh;
476 //printf("rfraclow %f, clow %f, rfrachigh %f, chigh %f,\n continuous %f\n",
477 //rfraclow,clow,rfrachigh,chigh,continuous);
480 discrete = rfraclow*fdaq[nrlow-1] + rfrachigh*fdaq[nrhigh-1];
482 discrete = rfraclow*fdag[nrlow-1] + rfrachigh*fdag[nrhigh-1];
488 Int_t AliQuenchingWeights::InitSingleHard(const Char_t *contall,const Char_t *discall)
490 // read in tables for Single Hard Approx.
491 // path to continuum and to discrete part
493 fTablesLoaded = kFALSE;
497 sprintf(fname,"%s",gSystem->ExpandPathName(contall));
498 //PH ifstream fincont(fname);
499 fstream fincont(fname,ios::in);
500 #if defined(__HP_aCC) || defined(__DECCXX)
501 if(!fincont.rdbuf()->is_open()) return -1;
503 if(!fincont.is_open()) return -1;
507 while(fincont>>fxx[nn]>>fcaq[0][nn]>>fcaq[1][nn]>>fcaq[2][nn]>>fcaq[3][nn]>>
508 fcaq[4][nn]>>fcaq[5][nn]>>fcaq[6][nn]>>fcaq[7][nn]>>fcaq[8][nn]>>
509 fcaq[9][nn]>>fcaq[10][nn]>>fcaq[11][nn]>>fcaq[12][nn]>>
511 fcaq[14][nn]>>fcaq[15][nn]>>fcaq[16][nn]>>fcaq[17][nn]>>
513 fcaq[19][nn]>>fcaq[20][nn]>>fcaq[21][nn]>>fcaq[22][nn]>>
515 fcaq[24][nn]>>fcaq[25][nn]>>fcaq[26][nn]>>fcaq[27][nn]>>
524 while(fincont>>fxxg[nn]>>fcag[0][nn]>>fcag[1][nn]>>fcag[2][nn]>>fcag[3][nn]>>
525 fcag[4][nn]>>fcag[5][nn]>>fcag[6][nn]>>fcag[7][nn]>>fcag[8][nn]>>
526 fcag[9][nn]>>fcag[10][nn]>>fcag[11][nn]>>fcag[12][nn]>>
528 fcag[14][nn]>>fcag[15][nn]>>fcag[16][nn]>>fcag[17][nn]>>
530 fcag[19][nn]>>fcag[20][nn]>>fcag[21][nn]>>fcag[22][nn]>>
532 fcag[24][nn]>>fcag[25][nn]>>fcag[26][nn]>>fcag[27][nn]>>
540 sprintf(fname,"%s",gSystem->ExpandPathName(discall));
541 //PH ifstream findisc(fname);
542 fstream findisc(fname,ios::in);
543 #if defined(__HP_aCC) || defined(__DECCXX)
544 if(!findisc.rdbuf()->is_open()) return -1;
546 if(!findisc.is_open()) return -1;
550 while(findisc>>frrr[nn]>>fdaq[nn]) {
555 while(findisc>>frrrg[nn]>>fdag[nn]) {
561 fTablesLoaded = kTRUE;
566 C***************************************************************************
567 C Quenching Weights for Single Hard Scattering
572 C Carlos A. Salgado and Urs A. Wiedemann, hep-ph/0302184.
574 C Carlos A. Salgado and Urs A. Wiedemann Phys.Rev.Lett.89:092303,2002.
577 C This package contains quenching weights for gluon radiation in the
578 C single hard scattering approximation.
580 C swqlin returns the quenching weight for a quark (ipart=1) or
581 C a gluon (ipart=2) traversing a medium with Debye screening mass mu and
582 C length L. The input values are rrrr=0.5*mu^2*L^2 and xxxx=w/wc, where
583 C wc=0.5*mu^2*L and w is the energy radiated. The output values are
584 C the continuous and discrete (prefactor of the delta function) parts
585 C of the quenching weights.
587 C In order to use this routine, the files contlin.all and disclin.all
588 C need to be in the working directory.
590 C An initialization of the tables is needed by doing call initlin before
593 C Please, send us any comment:
595 C urs.wiedemann@cern.ch
596 C carlos.salgado@cern.ch
599 C-------------------------------------------------------------------
602 SUBROUTINE swqlin(ipart,rrrr,xxxx,continuous,discrete)
604 REAL*8 xx(400), dalq(30), calq(30,261), rrr(30)
605 COMMON /datalinqua/ xx, dalq, calq, rrr
607 REAL*8 xxlg(400), dalg(30), calg(30,261), rrrlg(30)
608 COMMON /datalinglu/ xxlg, dalg, calg, rrrlg
610 REAL*8 rrrr,xxxx, continuous, discrete
612 INTEGER nrlow, nrhigh, nxlow, nxhigh
613 REAL*8 rrhigh, rrlow, rfraclow, rfrachigh
614 REAL*8 xfraclow, xfrachigh
620 nxlow = int(xxin/0.038) + 1
622 xfraclow = (xx(nxhigh)-xxin)/0.038
623 xfrachigh = (xxin - xx(nxlow))/0.038
626 if (rrin.lt.rrr(nr)) then
638 rfraclow = (rrhigh-rrin)/(rrhigh-rrlow)
639 rfrachigh = (rrin-rrlow)/(rrhigh-rrlow)
642 clow = xfraclow*calq(nrlow,nxlow)+xfrachigh*calq(nrlow,nxhigh)
643 chigh = xfraclow*calq(nrhigh,nxlow)+xfrachigh*calq(nrhigh,nxhigh)
645 clow = xfraclow*calg(nrlow,nxlow)+xfrachigh*calg(nrlow,nxhigh)
646 chigh = xfraclow*calg(nrhigh,nxlow)+xfrachigh*calg(nrhigh,nxhigh)
649 continuous = rfraclow*clow + rfrachigh*chigh
652 discrete = rfraclow*dalq(nrlow) + rfrachigh*dalq(nrhigh)
654 discrete = rfraclow*dalg(nrlow) + rfrachigh*dalg(nrhigh)
660 REAL*8 xxlq(400), dalq(30), calq(30,261), rrr(30)
661 COMMON /datalinqua/ xxlq, dalq, calq, rrr
663 REAL*8 xxlg(400), dalg(30), calg(30,261), rrrlg(30)
664 COMMON /datalinglu/ xxlg, dalg, calg, rrrlg
666 OPEN(UNIT=20,FILE='contlin.all',STATUS='OLD',ERR=90)
668 read (20,*) xxlq(nn), calq(1,nn), calq(2,nn), calq(3,nn),
669 + calq(4,nn), calq(5,nn), calq(6,nn), calq(7,nn), calq(8,nn),
670 + calq(9,nn), calq(10,nn), calq(11,nn), calq(12,nn),
672 + calq(14,nn), calq(15,nn), calq(16,nn), calq(17,nn),
674 + calq(19,nn), calq(20,nn), calq(21,nn), calq(22,nn),
676 + calq(24,nn), calq(25,nn), calq(26,nn), calq(27,nn),
678 + calq(29,nn), calq(30,nn)
681 read (20,*) xxlg(nn), calg(1,nn), calg(2,nn), calg(3,nn),
682 + calg(4,nn), calg(5,nn), calg(6,nn), calg(7,nn), calg(8,nn),
683 + calg(9,nn), calg(10,nn), calg(11,nn), calg(12,nn),
685 + calg(14,nn), calg(15,nn), calg(16,nn), calg(17,nn),
687 + calg(19,nn), calg(20,nn), calg(21,nn), calg(22,nn),
689 + calg(24,nn), calg(25,nn), calg(26,nn), calg(27,nn),
691 + calg(29,nn), calg(30,nn)
695 OPEN(UNIT=21,FILE='disclin.all',STATUS='OLD',ERR=91)
697 read (21,*) rrr(nn), dalq(nn)
700 read (21,*) rrrlg(nn), dalg(nn)
705 90 PRINT*, 'input - output error'
706 91 PRINT*, 'input - output error #2'
711 =======================================================================
713 Ported to class by C. Loizides - 17/02/2004
717 Int_t AliQuenchingWeights::CalcSingleHard(Int_t ipart, Double_t rrrr,Double_t xxxx,
718 Double_t &continuous,Double_t &discrete) const
720 // calculate Single Hard approx.
721 // weights for given parton type,
722 // rrrr=0.5*mu^2*L^2 and xxxx=w/wc, wc=0.5*mu^2*L
724 // read-in data before first call
726 Error("CalcSingleHard","Tables are not loaded.");
730 Error("CalcSingleHard","Tables are not loaded for Single Hard Scattering.");
734 Double_t rrin = rrrr;
735 Double_t xxin = xxxx;
737 Int_t nxlow = (Int_t)(xxin/0.038) + 1;
738 Int_t nxhigh = nxlow + 1;
739 Double_t xfraclow = (fxx[nxhigh-1]-xxin)/0.038;
740 Double_t xfrachigh = (xxin - fxx[nxlow-1])/0.038;
743 if(rrin<=frrr[29]) rrin = 1.05*frrr[29]; // AD
744 if(rrin>=frrr[0]) rrin = 0.95*frrr[0]; // AD
746 Int_t nrlow=0,nrhigh=0;
747 Double_t rrhigh=0,rrlow=0;
748 for(Int_t nr=1; nr<=30; nr++) {
749 if(rrin<frrr[nr-1]) {
752 rrhigh = frrr[nr-1-1];
762 Double_t rfraclow = (rrhigh-rrin)/(rrhigh-rrlow);
763 Double_t rfrachigh = (rrin-rrlow)/(rrhigh-rrlow);
765 //printf("R = %f,\nRlow = %f, Rhigh = %f,\nRfraclow = %f, Rfrachigh = %f\n",rrin,rrlow,rrhigh,rfraclow,rfrachigh); // AD
767 Double_t clow=0,chigh=0;
769 clow = xfraclow*fcaq[nrlow-1][nxlow-1]+xfrachigh*fcaq[nrlow-1][nxhigh-1];
770 chigh = xfraclow*fcaq[nrhigh-1][nxlow-1]+xfrachigh*fcaq[nrhigh-1][nxhigh-1];
772 clow = xfraclow*fcag[nrlow-1][nxlow-1]+xfrachigh*fcag[nrlow-1][nxhigh-1];
773 chigh = xfraclow*fcag[nrhigh-1][nxlow-1]+xfrachigh*fcag[nrhigh-1][nxhigh-1];
776 continuous = rfraclow*clow + rfrachigh*chigh;
777 //printf("rfraclow %f, clow %f, rfrachigh %f, chigh %f,\n continuous %f\n",
778 // rfraclow,clow,rfrachigh,chigh,continuous);
781 discrete = rfraclow*fdaq[nrlow-1] + rfrachigh*fdaq[nrhigh-1];
783 discrete = rfraclow*fdag[nrlow-1] + rfrachigh*fdag[nrhigh-1];
789 Int_t AliQuenchingWeights::CalcMult(Int_t ipart,
790 Double_t w,Double_t qtransp,Double_t length,
791 Double_t &continuous,Double_t &discrete) const
793 // Calculate Multiple Scattering approx.
794 // weights for given parton type,
795 // rrrr=0.5*q*L^3 and xxxx=w/wc, wc=0.5*q*L^2
797 Double_t wc=CalcWC(qtransp,length);
798 Double_t rrrr=CalcR(wc,length);
800 return CalcMult(ipart,rrrr,xxxx,continuous,discrete);
803 Int_t AliQuenchingWeights::CalcSingleHard(Int_t ipart,
804 Double_t w,Double_t mu,Double_t length,
805 Double_t &continuous,Double_t &discrete) const
807 // calculate Single Hard approx.
808 // weights for given parton type,
809 // rrrr=0.5*mu^2*L^2 and xxxx=w/wc, wc=0.5*mu^2*L
811 Double_t wcbar=CalcWCbar(mu,length);
812 Double_t rrrr=CalcR(wcbar,length);
813 Double_t xxxx=w/wcbar;
814 return CalcSingleHard(ipart,rrrr,xxxx,continuous,discrete);
817 Double_t AliQuenchingWeights::CalcR(Double_t wc, Double_t l) const
819 //calculate R value and
820 //check if it is less then maximum
822 Double_t R = wc*l*fgkConvFmToInvGeV;
824 Warning("CalcR","Value of R = %.2f; should be less than %.2f",R,fgkRMax);
830 Double_t AliQuenchingWeights::CalcRk(Double_t k, Double_t I0, Double_t I1) const
832 //calculate R value and
833 //check if it is less then maximum
835 Double_t R = fgkRMax;
839 Warning("CalcRk","Value of R = %.2f; should be less than %.2f",R,fgkRMax);
845 Double_t AliQuenchingWeights::GetELossRandom(Int_t ipart, Double_t length, Double_t e) const
847 // return DeltaE for MS or SH scattering
848 // for given parton type, length and energy
849 // Dependant on ECM (energy constraint method)
850 // e is used to determine where to set bins to zero.
853 Fatal("GetELossRandom","Call SampleEnergyLoss method before!");
856 if((ipart<1) || (ipart>2)) {
857 Fatal("GetELossRandom","ipart =%d; but has to be 1 (quark) or 2 (gluon)",ipart);
861 Int_t l=GetIndex(length);
864 if(fECMethod==kReweight){
868 ret=fHistos[ipart-1][l-1]->GetRandom();
870 Warning("GetELossRandom",
871 "Aborted reweighting; maximum loss assigned after 1e6 trials.");
878 Double_t ret=fHistos[ipart-1][l-1]->GetRandom();
883 Double_t AliQuenchingWeights::CalcQuenchedEnergy(Int_t ipart, Double_t length, Double_t e) const
885 //return quenched parton energy
886 //for given parton type, length and energy
888 Double_t loss=GetELossRandom(ipart,length,e);
892 Double_t AliQuenchingWeights::GetELossRandom(Int_t ipart, TH1F *hell, Double_t e) const
894 // return DeltaE for MS or SH scattering
895 // for given parton type, length distribution and energy
896 // Dependant on ECM (energy constraint method)
897 // e is used to determine where to set bins to zero.
900 Warning("GetELossRandom","Pointer to length distribution is NULL.");
903 Double_t ell=hell->GetRandom();
904 return GetELossRandom(ipart,ell,e);
907 Double_t AliQuenchingWeights::CalcQuenchedEnergy(Int_t ipart, TH1F *hell, Double_t e) const
909 //return quenched parton energy
910 //for given parton type, length distribution and energy
912 Double_t loss=GetELossRandom(ipart,hell,e);
916 Double_t AliQuenchingWeights::GetELossRandomK(Int_t ipart, Double_t I0, Double_t I1, Double_t e)
918 // return DeltaE for new dynamic version
919 // for given parton type, I0 and I1 value and energy
920 // Dependant on ECM (energy constraint method)
921 // e is used to determine where to set bins to zero.
923 // read-in data before first call
925 Fatal("GetELossRandomK","Tables are not loaded.");
928 if((ipart<1) || (ipart>2)) {
929 Fatal("GetELossRandomK","ipart =%d; but has to be 1 (quark) or 2 (gluon)",ipart);
933 Double_t R=CalcRk(I0,I1);
935 Fatal("GetELossRandomK","R should not be negative");
938 Double_t wc=CalcWCk(I1);
940 Fatal("GetELossRandomK","wc should be greater than zero");
943 if(SampleEnergyLoss(ipart,R)!=0){
944 Fatal("GetELossRandomK","Could not sample energy loss");
948 if(fECMethod==kReweight){
952 ret=fHisto->GetRandom();
954 Warning("GetELossRandomK",
955 "Aborted reweighting; maximum loss assigned after 1e6 trials.");
963 Double_t ret=fHisto->GetRandom()*wc;
968 Double_t AliQuenchingWeights::CalcQuenchedEnergyK(Int_t ipart, Double_t I0, Double_t I1, Double_t e)
970 //return quenched parton energy
971 //for given parton type, I0 and I1 value and energy
973 Double_t loss=GetELossRandomK(ipart,I0,I1,e);
977 Double_t AliQuenchingWeights::GetELossRandomKFast(Int_t ipart, Double_t I0, Double_t I1, Double_t e)
979 // return DeltaE for new dynamic version
980 // for given parton type, I0 and I1 value and energy
981 // Dependant on ECM (energy constraint method)
982 // e is used to determine where to set bins to zero.
983 // method is optimized and should only be used if
984 // all parameters are well within the bounds.
985 // read-in data tables before first call
987 Double_t R=CalcRk(I0,I1);
992 Double_t wc=CalcWCk(I1);
997 Double_t discrete=0.;
998 Double_t continuous=0;
1000 Double_t xxxx = fHisto->GetBinCenter(bin);
1002 CalcMult(ipart,R,xxxx,continuous,discrete);
1004 CalcSingleHard(ipart,R,xxxx,continuous,discrete);
1006 if(discrete>0.999) {
1011 fHisto->SetBinContent(bin,continuous);
1014 for(Int_t bin=2; bin<=fgkBins; bin++) {
1015 xxxx = fHisto->GetBinCenter(bin);
1016 CalcMult(ipart,R,xxxx,continuous,discrete);
1017 fHisto->SetBinContent(bin,continuous);
1020 for(Int_t bin=2; bin<=fgkBins; bin++) {
1021 xxxx = fHisto->GetBinCenter(bin);
1022 CalcSingleHard(ipart,R,xxxx,continuous,discrete);
1023 fHisto->SetBinContent(bin,continuous);
1027 // add discrete part to distribution
1028 Double_t val=discrete/(1.-discrete)*fHisto->Integral(1,fgkBins);
1029 fHisto->Fill(0.,val);
1031 if(fECMethod==kReweight) {
1032 for(Int_t bin=fHisto->FindBin(e/wc)+1; bin<=fgkBins; bin++) {
1033 fHisto->SetBinContent(bin,0);
1037 Double_t ret=fHisto->GetRandom()*wc;
1042 Double_t AliQuenchingWeights::CalcQuenchedEnergyKFast(Int_t ipart, Double_t I0, Double_t I1, Double_t e)
1044 //return quenched parton energy (fast method)
1045 //for given parton type, I0 and I1 value and energy
1047 Double_t loss=GetELossRandomKFast(ipart,I0,I1,e);
1051 Int_t AliQuenchingWeights::SampleEnergyLoss()
1053 // Has to be called to fill the histograms
1055 // For stored values fQTransport loop over
1056 // particle type and length = 1 to fMaxLength (fm)
1057 // to fill energy loss histos
1059 // Take histogram of continuous weights
1060 // Take discrete_weight
1061 // If discrete_weight > 1, put all channels to 0, except channel 1
1062 // Fill channel 1 with discrete_weight/(1-discrete_weight)*integral
1064 // read-in data before first call
1066 Error("SampleEnergyLoss","Tables are not loaded.");
1071 Int_t lmax=CalcLengthMax(fQTransport);
1072 if(fLengthMax>lmax){
1073 Info("SampleEnergyLoss","Maximum length changed from %d to %d;\nin order to have R < %.f",fLengthMax,lmax,fgkRMax);
1077 Warning("SampleEnergyLoss","Maximum length not checked,\nbecause SingeHard is not yet tested.");
1081 fHistos=new TH1F**[2];
1082 fHistos[0]=new TH1F*[4*fLengthMax];
1083 fHistos[1]=new TH1F*[4*fLengthMax];
1084 fLengthMaxOld=fLengthMax; //remember old value in case
1085 //user wants to reset
1088 Char_t meddesc[100];
1090 medvalue=(Int_t)(fQTransport*1000.);
1091 sprintf(meddesc,"MS");
1093 medvalue=(Int_t)(fMu*1000.);
1094 sprintf(meddesc,"SH");
1097 for(Int_t ipart=1;ipart<=2;ipart++){
1098 for(Int_t l=1;l<=4*fLengthMax;l++){
1100 sprintf(hname,"hDisc-ContQW_%s_%d_%d_%d_%d",meddesc,fInstanceNumber,ipart,medvalue,l);
1102 Double_t wc = CalcWC(len);
1103 fHistos[ipart-1][l-1] = new TH1F(hname,hname,fgkBins,0.,fgkMaxBin*wc);
1104 fHistos[ipart-1][l-1]->SetXTitle("#Delta E [GeV]");
1105 fHistos[ipart-1][l-1]->SetYTitle("p(#Delta E)");
1106 fHistos[ipart-1][l-1]->SetLineColor(4);
1108 Double_t rrrr = CalcR(wc,len);
1109 Double_t discrete=0.;
1110 // loop on histogram channels
1111 for(Int_t bin=1; bin<=fgkBins; bin++) {
1112 Double_t xxxx = fHistos[ipart-1][l-1]->GetBinCenter(bin)/wc;
1113 Double_t continuous;
1115 CalcMult(ipart,rrrr,xxxx,continuous,discrete);
1117 CalcSingleHard(ipart,rrrr,xxxx,continuous,discrete);
1118 fHistos[ipart-1][l-1]->SetBinContent(bin,continuous);
1120 // add discrete part to distribution
1122 for(Int_t bin=2;bin<=fgkBins;bin++)
1123 fHistos[ipart-1][l-1]->SetBinContent(bin,0.);
1125 Double_t val=discrete/(1.-discrete)*fHistos[ipart-1][l-1]->Integral(1,fgkBins);
1126 fHistos[ipart-1][l-1]->Fill(0.,val);
1128 Double_t hint=fHistos[ipart-1][l-1]->Integral(1,fgkBins);
1129 fHistos[ipart-1][l-1]->Scale(1./hint);
1135 Int_t AliQuenchingWeights::SampleEnergyLoss(Int_t ipart, Double_t R)
1137 // Sample energy loss directly for one particle type
1138 // choses R (safe it and keep it until next call of function)
1140 // read-in data before first call
1142 Error("SampleEnergyLoss","Tables are not loaded.");
1146 Double_t discrete=0.;
1147 Double_t continuous=0;;
1149 Double_t xxxx = fHisto->GetBinCenter(bin);
1151 CalcMult(ipart,R,xxxx,continuous,discrete);
1153 CalcSingleHard(ipart,R,xxxx,continuous,discrete);
1156 fHisto->SetBinContent(1,1.);
1157 for(Int_t bin=2;bin<=fgkBins;bin++)
1158 fHisto->SetBinContent(bin,0.);
1162 fHisto->SetBinContent(bin,continuous);
1163 for(Int_t bin=2; bin<=fgkBins; bin++) {
1164 xxxx = fHisto->GetBinCenter(bin);
1166 CalcMult(ipart,R,xxxx,continuous,discrete);
1168 CalcSingleHard(ipart,R,xxxx,continuous,discrete);
1169 fHisto->SetBinContent(bin,continuous);
1171 Double_t val=discrete/(1.-discrete)*fHisto->Integral(1,fgkBins);
1172 fHisto->Fill(0.,val);
1173 Double_t hint=fHisto->Integral(1,fgkBins);
1175 fHisto->Scale(1./hint);
1177 //cout << discrete << " " << hint << " " << continuous << endl;
1183 const TH1F* AliQuenchingWeights::GetHisto(Int_t ipart,Double_t length) const
1185 //return quenching histograms
1186 //for ipart and length
1189 Fatal("GetELossRandom","Call SampleEnergyLoss method before!");
1192 if((ipart<1) || (ipart>2)) {
1193 Fatal("GetELossRandom","ipart =%d; but has to be 1 (quark) or 2 (gluon)",ipart);
1197 Int_t l=GetIndex(length);
1199 return fHistos[ipart-1][l-1];
1202 TH1F* AliQuenchingWeights::ComputeQWHisto(Int_t ipart,Double_t medval,Double_t length) const
1204 // ipart = 1 for quark, 2 for gluon
1205 // medval a) qtransp = transport coefficient (GeV^2/fm)
1206 // b) mu = Debye mass (GeV)
1207 // length = path length in medium (fm)
1208 // Get from SW tables:
1209 // - continuous weight, as a function of dE/wc
1212 Char_t meddesc[100];
1214 wc=CalcWC(medval,length);
1215 sprintf(meddesc,"MS");
1217 wc=CalcWCbar(medval,length);
1218 sprintf(meddesc,"SH");
1222 sprintf(hname,"hContQWHisto_%s_%d_%d_%d",meddesc,ipart,
1223 (Int_t)(medval*1000.),(Int_t)length);
1225 TH1F *hist = new TH1F("hist",hname,fgkBins,0.,fgkMaxBin*wc);
1226 hist->SetXTitle("#Delta E [GeV]");
1227 hist->SetYTitle("p(#Delta E)");
1228 hist->SetLineColor(4);
1230 Double_t rrrr = CalcR(wc,length);
1231 //loop on histogram channels
1232 for(Int_t bin=1; bin<=fgkBins; bin++) {
1233 Double_t xxxx = hist->GetBinCenter(bin)/wc;
1234 Double_t continuous,discrete;
1236 if(fMultSoft) ret=CalcMult(ipart,rrrr,xxxx,continuous,discrete);
1237 else ret=CalcSingleHard(ipart,rrrr,xxxx,continuous,discrete);
1242 hist->SetBinContent(bin,continuous);
1247 TH1F* AliQuenchingWeights::ComputeQWHistoX(Int_t ipart,Double_t medval,Double_t length) const
1249 // ipart = 1 for quark, 2 for gluon
1250 // medval a) qtransp = transport coefficient (GeV^2/fm)
1251 // b) mu = Debye mass (GeV)
1252 // length = path length in medium (fm)
1253 // Get from SW tables:
1254 // - continuous weight, as a function of dE/wc
1257 Char_t meddesc[100];
1259 wc=CalcWC(medval,length);
1260 sprintf(meddesc,"MS");
1262 wc=CalcWCbar(medval,length);
1263 sprintf(meddesc,"SH");
1267 sprintf(hname,"hContQWHistox_%s_%d_%d_%d",meddesc,ipart,
1268 (Int_t)(medval*1000.),(Int_t)length);
1270 TH1F *histx = new TH1F("histx",hname,fgkBins,0.,fgkMaxBin);
1271 histx->SetXTitle("x = #Delta E/#omega_{c}");
1273 histx->SetYTitle("p(#Delta E/#omega_{c})");
1275 histx->SetYTitle("p(#Delta E/#bar#omega_{c})");
1276 histx->SetLineColor(4);
1278 Double_t rrrr = CalcR(wc,length);
1279 //loop on histogram channels
1280 for(Int_t bin=1; bin<=fgkBins; bin++) {
1281 Double_t xxxx = histx->GetBinCenter(bin);
1282 Double_t continuous,discrete;
1284 if(fMultSoft) ret=CalcMult(ipart,rrrr,xxxx,continuous,discrete);
1285 else ret=CalcSingleHard(ipart,rrrr,xxxx,continuous,discrete);
1290 histx->SetBinContent(bin,continuous);
1295 TH1F* AliQuenchingWeights::ComputeQWHistoX(Int_t ipart,Double_t R) const
1297 // compute P(E) distribution for
1298 // given ipart = 1 for quark, 2 for gluon
1301 Char_t meddesc[100];
1303 sprintf(meddesc,"MS");
1305 sprintf(meddesc,"SH");
1309 sprintf(hname,"hQWHistox_%s_%d_%.2f",meddesc,ipart,R);
1310 TH1F *histx = new TH1F("histx",hname,fgkBins,0.,fgkMaxBin);
1311 histx->SetXTitle("x = #Delta E/#omega_{c}");
1313 histx->SetYTitle("p(#Delta E/#omega_{c})");
1315 histx->SetYTitle("p(#Delta E/#bar#omega_{c})");
1316 histx->SetLineColor(4);
1319 Double_t continuous=0.,discrete=0.;
1320 //loop on histogram channels
1321 for(Int_t bin=1; bin<=fgkBins; bin++) {
1322 Double_t xxxx = histx->GetBinCenter(bin);
1324 if(fMultSoft) ret=CalcMult(ipart,rrrr,xxxx,continuous,discrete);
1325 else ret=CalcSingleHard(ipart,rrrr,xxxx,continuous,discrete);
1330 histx->SetBinContent(bin,continuous);
1333 //add discrete part to distribution
1335 for(Int_t bin=2;bin<=fgkBins;bin++)
1336 histx->SetBinContent(bin,0.);
1338 Double_t val=discrete/(1.-discrete)*histx->Integral(1,fgkBins);
1339 histx->Fill(0.,val);
1341 Double_t hint=histx->Integral(1,fgkBins);
1342 if(hint!=0) histx->Scale(1./hint);
1347 TH1F* AliQuenchingWeights::ComputeELossHisto(Int_t ipart,Double_t medval,Double_t l,Double_t e) const
1349 // compute energy loss histogram for
1350 // parton type, medium value, length and energy
1352 AliQuenchingWeights *dummy=new AliQuenchingWeights(*this);
1354 dummy->SetQTransport(medval);
1357 dummy->SetMu(medval);
1358 dummy->InitSingleHard();
1360 dummy->SampleEnergyLoss();
1365 sprintf(name,"Energy Loss Distribution - Quarks;E_{loss} (GeV);#");
1366 sprintf(hname,"hLossQuarks");
1368 sprintf(name,"Energy Loss Distribution - Gluons;E_{loss} (GeV);#");
1369 sprintf(hname,"hLossGluons");
1372 TH1F *h = new TH1F(hname,name,250,0,250);
1373 for(Int_t i=0;i<100000;i++){
1374 //if(i % 1000 == 0) cout << "." << flush;
1375 Double_t loss=dummy->GetELossRandom(ipart,l,e);
1383 TH1F* AliQuenchingWeights::ComputeELossHisto(Int_t ipart,Double_t medval,TH1F *hEll,Double_t e) const
1385 // compute energy loss histogram for
1386 // parton type, medium value,
1387 // length distribution and energy
1389 AliQuenchingWeights *dummy=new AliQuenchingWeights(*this);
1391 dummy->SetQTransport(medval);
1394 dummy->SetMu(medval);
1395 dummy->InitSingleHard();
1397 dummy->SampleEnergyLoss();
1402 sprintf(name,"Energy Loss Distribution - Quarks;E_{loss} (GeV);#");
1403 sprintf(hname,"hLossQuarks");
1405 sprintf(name,"Energy Loss Distribution - Gluons;E_{loss} (GeV);#");
1406 sprintf(hname,"hLossGluons");
1409 TH1F *h = new TH1F(hname,name,250,0,250);
1410 for(Int_t i=0;i<100000;i++){
1411 //if(i % 1000 == 0) cout << "." << flush;
1412 Double_t loss=dummy->GetELossRandom(ipart,hEll,e);
1420 TH1F* AliQuenchingWeights::ComputeELossHisto(Int_t ipart,Double_t R) const
1422 // compute energy loss histogram for
1423 // parton type and given R
1425 TH1F *dummy = ComputeQWHistoX(ipart,R);
1426 if(!dummy) return 0;
1429 sprintf(hname,"hELossHistox_%d_%.2f",ipart,R);
1430 TH1F *histx = new TH1F("histxr",hname,fgkBins,0.,fgkMaxBin);
1431 for(Int_t i=0;i<100000;i++){
1432 //if(i % 1000 == 0) cout << "." << flush;
1433 Double_t loss=dummy->GetRandom();
1440 Double_t AliQuenchingWeights::GetMeanELoss(Int_t ipart,Double_t medval,Double_t l) const
1442 // compute average energy loss for
1443 // parton type, medium value, length and energy
1445 TH1F *dummy = ComputeELossHisto(ipart,medval,l);
1446 if(!dummy) return 0;
1447 Double_t ret=dummy->GetMean();
1452 Double_t AliQuenchingWeights::GetMeanELoss(Int_t ipart,Double_t medval,TH1F *hEll) const
1454 // compute average energy loss for
1455 // parton type, medium value,
1456 // length distribution and energy
1458 TH1F *dummy = ComputeELossHisto(ipart,medval,hEll);
1459 if(!dummy) return 0;
1460 Double_t ret=dummy->GetMean();
1465 Double_t AliQuenchingWeights::GetMeanELoss(Int_t ipart,Double_t R) const
1467 // compute average energy loss over wc
1468 // for parton type and given R
1470 TH1F *dummy = ComputeELossHisto(ipart,R);
1471 if(!dummy) return 0;
1472 Double_t ret=dummy->GetMean();
1477 void AliQuenchingWeights::PlotDiscreteWeights(Double_t len) const
1479 // plot discrete weights for given length
1483 c = new TCanvas("cdiscms","Discrete Weight for Multiple Scattering",0,0,500,400);
1485 c = new TCanvas("cdiscsh","Discrete Weight for Single Hard Scattering",0,0,500,400);
1488 TH2F *hframe = new TH2F("hdisc","",2,0,5.1,2,0,1);
1489 hframe->SetStats(0);
1491 hframe->SetXTitle("#hat{q} [GeV^{2}/fm]");
1493 hframe->SetXTitle("#mu [GeV]");
1494 hframe->SetYTitle("Probability #Delta E = 0 , p_{0}");
1497 TGraph *gq=new TGraph(20);
1500 for(Double_t q=0.05;q<=5.05;q+=0.25){
1502 CalcMult(1,1.0,q,len,cont,disc);
1503 gq->SetPoint(i,q,disc);i++;
1506 for(Double_t m=0.05;m<=5.05;m+=0.25){
1508 CalcSingleHard(1,1.0,m,len,cont, disc);
1509 gq->SetPoint(i,m,disc);i++;
1512 gq->SetMarkerStyle(20);
1515 TGraph *gg=new TGraph(20);
1518 for(Double_t q=0.05;q<=5.05;q+=0.25){
1520 CalcMult(2,1.0,q,len,cont,disc);
1521 gg->SetPoint(i,q,disc);i++;
1524 for(Double_t m=0.05;m<=5.05;m+=0.25){
1526 CalcSingleHard(2,1.0,m,len,cont,disc);
1527 gg->SetPoint(i,m,disc);i++;
1530 gg->SetMarkerStyle(24);
1533 TLegend *l1a = new TLegend(0.5,0.6,.95,0.8);
1534 l1a->SetFillStyle(0);
1535 l1a->SetBorderSize(0);
1537 sprintf(label,"L = %.1f fm",len);
1538 l1a->AddEntry(gq,label,"");
1539 l1a->AddEntry(gq,"quark","pl");
1540 l1a->AddEntry(gg,"gluon","pl");
1546 void AliQuenchingWeights::PlotContWeights(Int_t itype,Double_t ell) const
1548 // plot continous weights for
1549 // given parton type and length
1556 sprintf(title,"Cont. Weight for Multiple Scattering - Quarks");
1558 sprintf(title,"Cont. Weight for Multiple Scattering - Gluons");
1560 medvals[0]=4;medvals[1]=1;medvals[2]=0.5;
1561 sprintf(name,"ccont-ms-%d",itype);
1564 sprintf(title,"Cont. Weight for Single Hard Scattering - Quarks");
1566 sprintf(title,"Cont. Weight for Single Hard Scattering - Gluons");
1568 medvals[0]=2;medvals[1]=1;medvals[2]=0.5;
1569 sprintf(name,"ccont-ms-%d",itype);
1572 TCanvas *c = new TCanvas(name,title,0,0,500,400);
1574 TH1F *h1=ComputeQWHisto(itype,medvals[0],ell);
1576 h1->SetTitle(title);
1578 h1->SetLineColor(1);
1580 TH1F *h2=ComputeQWHisto(itype,medvals[1],ell);
1582 h2->SetLineColor(2);
1583 h2->DrawCopy("SAME");
1584 TH1F *h3=ComputeQWHisto(itype,medvals[2],ell);
1586 h3->SetLineColor(3);
1587 h3->DrawCopy("SAME");
1589 TLegend *l1a = new TLegend(0.5,0.6,.95,0.8);
1590 l1a->SetFillStyle(0);
1591 l1a->SetBorderSize(0);
1593 sprintf(label,"L = %.1f fm",ell);
1594 l1a->AddEntry(h1,label,"");
1596 sprintf(label,"#hat{q} = %.1f GeV^{2}/fm",medvals[0]);
1597 l1a->AddEntry(h1,label,"pl");
1598 sprintf(label,"#hat{q} = %.1f GeV^{2}/fm",medvals[1]);
1599 l1a->AddEntry(h2,label,"pl");
1600 sprintf(label,"#hat{q} = %.1f GeV^{2}/fm",medvals[2]);
1601 l1a->AddEntry(h3,label,"pl");
1603 sprintf(label,"#mu = %.1f GeV",medvals[0]);
1604 l1a->AddEntry(h1,label,"pl");
1605 sprintf(label,"#mu = %.1f GeV",medvals[1]);
1606 l1a->AddEntry(h2,label,"pl");
1607 sprintf(label,"#mu = %.1f GeV",medvals[2]);
1608 l1a->AddEntry(h3,label,"pl");
1615 void AliQuenchingWeights::PlotContWeightsVsL(Int_t itype,Double_t medval) const
1617 // plot continous weights for
1618 // given parton type and medium value
1624 sprintf(title,"Cont. Weight for Multiple Scattering - Quarks");
1626 sprintf(title,"Cont. Weight for Multiple Scattering - Gluons");
1628 sprintf(name,"ccont2-ms-%d",itype);
1631 sprintf(title,"Cont. Weight for Single Hard Scattering - Quarks");
1633 sprintf(title,"Cont. Weight for Single Hard Scattering - Gluons");
1635 sprintf(name,"ccont2-sh-%d",itype);
1637 TCanvas *c = new TCanvas(name,title,0,0,500,400);
1639 TH1F *h1=ComputeQWHisto(itype,medval,8);
1641 h1->SetTitle(title);
1643 h1->SetLineColor(1);
1645 TH1F *h2=ComputeQWHisto(itype,medval,5);
1647 h2->SetLineColor(2);
1648 h2->DrawCopy("SAME");
1649 TH1F *h3=ComputeQWHisto(itype,medval,2);
1651 h3->SetLineColor(3);
1652 h3->DrawCopy("SAME");
1654 TLegend *l1a = new TLegend(0.5,0.6,.95,0.8);
1655 l1a->SetFillStyle(0);
1656 l1a->SetBorderSize(0);
1659 sprintf(label,"#hat{q} = %.1f GeV^{2}/fm",medval);
1661 sprintf(label,"#mu = %.1f GeV",medval);
1663 l1a->AddEntry(h1,label,"");
1664 l1a->AddEntry(h1,"L = 8 fm","pl");
1665 l1a->AddEntry(h2,"L = 5 fm","pl");
1666 l1a->AddEntry(h3,"L = 2 fm","pl");
1672 void AliQuenchingWeights::PlotAvgELoss(Double_t len,Double_t e) const
1674 // plot average energy loss for given length
1675 // and parton energy
1678 Error("PlotAvgELoss","Tables are not loaded.");
1685 sprintf(title,"Average Energy Loss for Multiple Scattering");
1686 sprintf(name,"cavgelossms");
1688 sprintf(title,"Average Energy Loss for Single Hard Scattering");
1689 sprintf(name,"cavgelosssh");
1692 TCanvas *c = new TCanvas(name,title,0,0,500,400);
1694 TH2F *hframe = new TH2F("avgloss",title,2,0,5.1,2,0,100);
1695 hframe->SetStats(0);
1697 hframe->SetXTitle("#hat{q} [GeV^{2}/fm]");
1699 hframe->SetXTitle("#mu [GeV]");
1700 hframe->SetYTitle("<E_{loss}> [GeV]");
1703 TGraph *gq=new TGraph(20);
1705 for(Double_t v=0.05;v<=5.05;v+=0.25){
1706 TH1F *dummy=ComputeELossHisto(1,v,len,e);
1707 Double_t avgloss=dummy->GetMean();
1708 gq->SetPoint(i,v,avgloss);i++;
1711 gq->SetMarkerStyle(20);
1714 TGraph *gg=new TGraph(20);
1716 for(Double_t v=0.05;v<=5.05;v+=0.25){
1717 TH1F *dummy=ComputeELossHisto(2,v,len,e);
1718 Double_t avgloss=dummy->GetMean();
1719 gg->SetPoint(i,v,avgloss);i++;
1722 gg->SetMarkerStyle(24);
1725 TGraph *gratio=new TGraph(20);
1726 for(Int_t i=0;i<20;i++){
1728 gg->GetPoint(i,x,y);
1729 gq->GetPoint(i,x2,y2);
1731 gratio->SetPoint(i,x,y/y2*10/2.25);
1732 else gratio->SetPoint(i,x,0);
1734 gratio->SetLineStyle(4);
1736 TLegend *l1a = new TLegend(0.5,0.6,.95,0.8);
1737 l1a->SetFillStyle(0);
1738 l1a->SetBorderSize(0);
1740 sprintf(label,"L = %.1f fm",len);
1741 l1a->AddEntry(gq,label,"");
1742 l1a->AddEntry(gq,"quark","pl");
1743 l1a->AddEntry(gg,"gluon","pl");
1744 l1a->AddEntry(gratio,"gluon/quark/2.25*10","pl");
1750 void AliQuenchingWeights::PlotAvgELoss(TH1F *hEll,Double_t e) const
1752 // plot average energy loss for given
1753 // length distribution and parton energy
1756 Error("PlotAvgELossVs","Tables are not loaded.");
1763 sprintf(title,"Average Energy Loss for Multiple Scattering");
1764 sprintf(name,"cavgelossms2");
1766 sprintf(title,"Average Energy Loss for Single Hard Scattering");
1767 sprintf(name,"cavgelosssh2");
1770 TCanvas *c = new TCanvas(name,title,0,0,500,400);
1772 TH2F *hframe = new TH2F("havgloss",title,2,0,5.1,2,0,100);
1773 hframe->SetStats(0);
1775 hframe->SetXTitle("#hat{q} [GeV^{2}/fm]");
1777 hframe->SetXTitle("#mu [GeV]");
1778 hframe->SetYTitle("<E_{loss}> [GeV]");
1781 TGraph *gq=new TGraph(20);
1783 for(Double_t v=0.05;v<=5.05;v+=0.25){
1784 TH1F *dummy=ComputeELossHisto(1,v,hEll,e);
1785 Double_t avgloss=dummy->GetMean();
1786 gq->SetPoint(i,v,avgloss);i++;
1789 gq->SetMarkerStyle(20);
1792 TGraph *gg=new TGraph(20);
1794 for(Double_t v=0.05;v<=5.05;v+=0.25){
1795 TH1F *dummy=ComputeELossHisto(2,v,hEll,e);
1796 Double_t avgloss=dummy->GetMean();
1797 gg->SetPoint(i,v,avgloss);i++;
1800 gg->SetMarkerStyle(24);
1803 TGraph *gratio=new TGraph(20);
1804 for(Int_t i=0;i<20;i++){
1806 gg->GetPoint(i,x,y);
1807 gq->GetPoint(i,x2,y2);
1809 gratio->SetPoint(i,x,y/y2*10/2.25);
1810 else gratio->SetPoint(i,x,0);
1812 gratio->SetLineStyle(4);
1815 TLegend *l1a = new TLegend(0.5,0.6,.95,0.8);
1816 l1a->SetFillStyle(0);
1817 l1a->SetBorderSize(0);
1819 sprintf(label,"<L> = %.2f fm",hEll->GetMean());
1820 l1a->AddEntry(gq,label,"");
1821 l1a->AddEntry(gq,"quark","pl");
1822 l1a->AddEntry(gg,"gluon","pl");
1823 l1a->AddEntry(gratio,"gluon/quark/2.25*10","pl");
1829 void AliQuenchingWeights::PlotAvgELossVsL(Double_t e) const
1831 // plot average energy loss versus ell
1834 Error("PlotAvgELossVsEll","Tables are not loaded.");
1842 sprintf(title,"Average Energy Loss for Multiple Scattering");
1843 sprintf(name,"cavgelosslms");
1846 sprintf(title,"Average Energy Loss for Single Hard Scattering");
1847 sprintf(name,"cavgelosslsh");
1851 TCanvas *c = new TCanvas(name,title,0,0,600,400);
1853 TH2F *hframe = new TH2F("avglossell",title,2,0,fLengthMax,2,0,250);
1854 hframe->SetStats(0);
1855 hframe->SetXTitle("length [fm]");
1856 hframe->SetYTitle("<E_{loss}> [GeV]");
1859 TGraph *gq=new TGraph((Int_t)fLengthMax*4);
1861 for(Double_t v=0.25;v<=fLengthMax;v+=0.25){
1862 TH1F *dummy=ComputeELossHisto(1,medval,v,e);
1863 Double_t avgloss=dummy->GetMean();
1864 gq->SetPoint(i,v,avgloss);i++;
1867 gq->SetMarkerStyle(20);
1870 TGraph *gg=new TGraph((Int_t)fLengthMax*4);
1872 for(Double_t v=0.25;v<=fLengthMax;v+=0.25){
1873 TH1F *dummy=ComputeELossHisto(2,medval,v,e);
1874 Double_t avgloss=dummy->GetMean();
1875 gg->SetPoint(i,v,avgloss);i++;
1878 gg->SetMarkerStyle(24);
1881 TGraph *gratio=new TGraph((Int_t)fLengthMax*4);
1882 for(Int_t i=0;i<=(Int_t)fLengthMax*4;i++){
1884 gg->GetPoint(i,x,y);
1885 gq->GetPoint(i,x2,y2);
1887 gratio->SetPoint(i,x,y/y2*100/2.25);
1888 else gratio->SetPoint(i,x,0);
1890 gratio->SetLineStyle(1);
1891 gratio->SetLineWidth(2);
1893 TLegend *l1a = new TLegend(0.15,0.65,.60,0.85);
1894 l1a->SetFillStyle(0);
1895 l1a->SetBorderSize(0);
1898 sprintf(label,"#hat{q} = %.2f GeV^{2}/fm",medval);
1900 sprintf(label,"#mu = %.2f GeV",medval);
1901 l1a->AddEntry(gq,label,"");
1902 l1a->AddEntry(gq,"quark","pl");
1903 l1a->AddEntry(gg,"gluon","pl");
1904 l1a->AddEntry(gratio,"gluon/quark/2.25*100","pl");
1907 TF1 *f=new TF1("f","100",0,fLengthMax);
1914 void AliQuenchingWeights::PlotAvgELossVsPt(Double_t medval,Double_t len) const
1916 // plot relative energy loss for given
1917 // length and parton energy versus pt
1920 Error("PlotAvgELossVsPt","Tables are not loaded.");
1927 sprintf(title,"Relative Energy Loss for Multiple Scattering");
1928 sprintf(name,"cavgelossvsptms");
1930 sprintf(title,"Relative Energy Loss for Single Hard Scattering");
1931 sprintf(name,"cavgelossvsptsh");
1934 TCanvas *c = new TCanvas(name,title,0,0,500,400);
1936 TH2F *hframe = new TH2F("havglossvspt",title,2,0,100,2,0,1);
1937 hframe->SetStats(0);
1938 hframe->SetXTitle("p_{T} [GeV]");
1939 hframe->SetYTitle("<E_{loss}>/p_{T} [GeV]");
1942 TGraph *gq=new TGraph(40);
1944 for(Double_t pt=2.5;pt<=100.05;pt+=2.5){
1945 TH1F *dummy=ComputeELossHisto(1,medval,len,pt);
1946 Double_t avgloss=dummy->GetMean();
1947 gq->SetPoint(i,pt,avgloss/pt);i++;
1950 gq->SetMarkerStyle(20);
1953 TGraph *gg=new TGraph(40);
1955 for(Double_t pt=2.5;pt<=100.05;pt+=2.5){
1956 TH1F *dummy=ComputeELossHisto(2,medval,len,pt);
1957 Double_t avgloss=dummy->GetMean();
1958 gg->SetPoint(i,pt,avgloss/pt);i++;
1961 gg->SetMarkerStyle(24);
1964 TLegend *l1a = new TLegend(0.5,0.6,.95,0.8);
1965 l1a->SetFillStyle(0);
1966 l1a->SetBorderSize(0);
1968 sprintf(label,"L = %.1f fm",len);
1969 l1a->AddEntry(gq,label,"");
1970 l1a->AddEntry(gq,"quark","pl");
1971 l1a->AddEntry(gg,"gluon","pl");
1977 void AliQuenchingWeights::PlotAvgELossVsPt(Double_t medval,TH1F *hEll) const
1979 // plot relative energy loss for given
1980 // length distribution and parton energy versus pt
1983 Error("PlotAvgELossVsPt","Tables are not loaded.");
1990 sprintf(title,"Relative Energy Loss for Multiple Scattering");
1991 sprintf(name,"cavgelossvsptms2");
1993 sprintf(title,"Relative Energy Loss for Single Hard Scattering");
1994 sprintf(name,"cavgelossvsptsh2");
1996 TCanvas *c = new TCanvas(name,title,0,0,500,400);
1998 TH2F *hframe = new TH2F("havglossvspt",title,2,0,100,2,0,1);
1999 hframe->SetStats(0);
2000 hframe->SetXTitle("p_{T} [GeV]");
2001 hframe->SetYTitle("<E_{loss}>/p_{T} [GeV]");
2004 TGraph *gq=new TGraph(40);
2006 for(Double_t pt=2.5;pt<=100.05;pt+=2.5){
2007 TH1F *dummy=ComputeELossHisto(1,medval,hEll,pt);
2008 Double_t avgloss=dummy->GetMean();
2009 gq->SetPoint(i,pt,avgloss/pt);i++;
2012 gq->SetMarkerStyle(20);
2015 TGraph *gg=new TGraph(40);
2017 for(Double_t pt=2.5;pt<=100.05;pt+=2.5){
2018 TH1F *dummy=ComputeELossHisto(2,medval,hEll,pt);
2019 Double_t avgloss=dummy->GetMean();
2020 gg->SetPoint(i,pt,avgloss/pt);i++;
2023 gg->SetMarkerStyle(24);
2026 TLegend *l1a = new TLegend(0.5,0.6,.95,0.8);
2027 l1a->SetFillStyle(0);
2028 l1a->SetBorderSize(0);
2030 sprintf(label,"<L> = %.2f fm",hEll->GetMean());
2031 l1a->AddEntry(gq,label,"");
2032 l1a->AddEntry(gq,"quark","pl");
2033 l1a->AddEntry(gg,"gluon","pl");
2039 Int_t AliQuenchingWeights::GetIndex(Double_t len) const
2041 if(len>fLengthMax) len=fLengthMax;
2043 Int_t l=Int_t(len/0.25);
2044 if((len-l*0.5)>0.125) l++;