// https://indico.cern.ch/conferenceDisplay.py?confId=157367
// - simplifications and bug fix in CreateCocktail()
// S. Grigoryan
+//-----------------------
+// 06/2012:
+// - added the cocktail for p-Pb & Pb-p @ 2.76, 4.4 & 5.03 TeV with 4 centrality
+// bins, using the EPS09-LO shadowing computed for 5.03 TeV. Energies are set by
+// AliGenMUONCocktailpp::SetCMSEnergy(int CMSEnergyCode), CMSEnergy codes are
+// defined in AliGenMUONCocktailpp.h.
+// - added functions to scale x-section of JPsi, Charmonia, Bottomonia, CCbar & BBbar
+// in Config.C to manage the statistics. Example of usage (in a cocktail with Hijing):
+/*
+ AliGenCocktail *cocktail = new AliGenCocktail();
+ cocktail->AddGenerator(hijing,"hijing",1);
+ TFormula *form[nb]; // nb - number of centrality bins with impact params bBins[i]
+ AliGenMUONCocktailpp *gen[nb];
+ for (Int_t i=0; i<nb; i++) {
+ form[i] = new TFormula(Form("f%d",i),"[0]+(x-[1])/([2]-[1])");
+ form[i]->SetParameters(i+1, bBins[i], bBins[i+1]);
+ gen[i] = MuonCocktail();
+ gen[i]->SetCentralityBin(i+1);
+ gen[i]->ScaleJPsi(100.);
+ gen[i]->CreateCocktail();
+ cocktail->AddGenerator(gen[i], Form("g%d",i), 101+i, form[i]);
+ }
+AliGenMUONCocktailpp* MuonCocktail() {
+ AliGenMUONCocktailpp *mc = new AliGenMUONCocktailpp();
+ ....................................
+ return mc;
+}
+*/
+// - a bug fixed in the function Generate()
+// S. Grigoryan
#include <TObjArray.h>
#include <TParticle.h>
fNSucceded(0),
fNGenerated(0),
fCentralityBin(0),
+ fScaleJPsi(1),
+ fScaleCharmonia(1),
+ fScaleBottomonia(1),
+ fScaleCCbar(1),
+ fScaleBBbar(1),
fJpsiPol(0),
fChic1Pol(0),
// gives 60 mub; so sigma_prompt = 54 mub, while Ref = R.Vogt_arXiv:1003.3497 (Table 2)
// gives 35 mub. Below we use sigma_direct from the Ref scaled by the factor 54/35.
// -bottomonia: 4pi integral of fit function for inclusive Upsilon1S dsigma/dy LHC data
-// gives 0.56 mub, sigmas for 2S & 3S obtained using CMS data for ratios 2S/1S & 3S/1S
+// gives 0.56 mub, sigmas for 2S & 3S obtained using LHCb data for ratios 2S/1S & 3S/1S
// -ccbar & bbbar: NLO pQCD computations - http://www-alice.gsi.de/ana/MNR/results.html
fCMSEnergyTeVArray[0] = 7.00;
fSigmaReactionArray[0] = 0.070;
fSigmaChic2Array[0] = 53.8e-6;
fSigmaPsiPArray[0] = 7.6e-6;
fSigmaUpsilonArray[0] = 0.56e-6;
- fSigmaUpsilonPArray[0] = 0.19e-6;
- fSigmaUpsilonPPArray[0] = 0.09e-6;
+ fSigmaUpsilonPArray[0] = 0.18e-6;
+ fSigmaUpsilonPPArray[0] = 0.08e-6;
fSigmaCCbarArray[0] = 6.91e-3;
fSigmaBBbarArray[0] = 0.232e-3;
fSigmaCCbarArray[2] = 11.2e-3;
fSigmaBBbarArray[2] = 0.445e-3;
-// x-sections for Min. Bias p-Pb & Pb-p @ 8.8 TeV: charmonia and bottomonia
+// x-sections for Min. Bias p-Pb & Pb-p @ 2.76 TeV: charmonia and bottomonia
// from 7 TeV numbers scaled according to pQCD ccbar and bbbar x-sections
// and with Glauber scaling
- fCMSEnergyTeVArray[3] = 9.00; // for 8.8 TeV
+ fCMSEnergyTeVArray[3] = 2.00; // for 2.76 TeV
fSigmaReactionArray[3] = 2.10;
- fSigmaJPsiArray[3] = 8.19e-3; // 208*1.172*33.6e-6
- fSigmaChic1Array[3] = 7.95e-3;
- fSigmaChic2Array[3] = 13.1e-3;
- fSigmaPsiPArray[3] = 1.85e-3;
- fSigmaUpsilonArray[3] = 0.146e-3; // 208*1.25*0.56e-6
- fSigmaUpsilonPArray[3] = 0.049e-3;
- fSigmaUpsilonPPArray[3] = 0.023e-3;
- fSigmaCCbarArray[3] = 1.68; // 208*8.1e-3
- fSigmaBBbarArray[3] = 0.061; // 208*0.29e-3
+ fSigmaJPsiArray[3] = 3.54e-3; // 208*0.507*33.6e-6
+ fSigmaChic1Array[3] = 3.44e-3;
+ fSigmaChic2Array[3] = 5.66e-3;
+ fSigmaPsiPArray[3] = 0.80e-3;
+ fSigmaUpsilonArray[3] = 0.045e-3; // 208*0.384*0.56e-6
+ fSigmaUpsilonPArray[3] = 0.014e-3;
+ fSigmaUpsilonPPArray[3] = 0.006e-3;
+ fSigmaCCbarArray[3] = 0.73; // 208*3.50e-3
+ fSigmaBBbarArray[3] = 0.019; // 208*0.089e-3
fCMSEnergyTeVArray[4] = -fCMSEnergyTeVArray[3];
fSigmaReactionArray[4] = fSigmaReactionArray[3];
fSigmaCCbarArray[4] = fSigmaCCbarArray[3];
fSigmaBBbarArray[4] = fSigmaBBbarArray[3];
+// x-sections for Min. Bias p-Pb & Pb-p @ 4.4 TeV: charmonia and bottomonia
+// from 7 TeV numbers scaled according to pQCD ccbar and bbbar x-sections
+// and with Glauber scaling
+ fCMSEnergyTeVArray[5] = 4.00; // for 4.4 TeV
+ fSigmaReactionArray[5] = 2.10;
+ fSigmaJPsiArray[5] = 5.00e-3; // 208*0.715*33.6e-6
+ fSigmaChic1Array[5] = 4.86e-3;
+ fSigmaChic2Array[5] = 7.99e-3;
+ fSigmaPsiPArray[5] = 1.12e-3;
+ fSigmaUpsilonArray[5] = 0.074e-3; // 208*0.629*0.56e-6
+ fSigmaUpsilonPArray[5] = 0.023e-3;
+ fSigmaUpsilonPPArray[5] = 0.010e-3;
+ fSigmaCCbarArray[5] = 1.03; // 208*4.94e-3
+ fSigmaBBbarArray[5] = 0.030; // 208*0.146e-3
+
+ fCMSEnergyTeVArray[6] = -fCMSEnergyTeVArray[5];
+ fSigmaReactionArray[6] = fSigmaReactionArray[5];
+ fSigmaJPsiArray[6] = fSigmaJPsiArray[5];
+ fSigmaChic1Array[6] = fSigmaChic1Array[5];
+ fSigmaChic2Array[6] = fSigmaChic2Array[5];
+ fSigmaPsiPArray[6] = fSigmaPsiPArray[5];
+ fSigmaUpsilonArray[6] = fSigmaUpsilonArray[5];
+ fSigmaUpsilonPArray[6] = fSigmaUpsilonPArray[5];
+ fSigmaUpsilonPPArray[6] = fSigmaUpsilonPPArray[5];
+ fSigmaCCbarArray[6] = fSigmaCCbarArray[5];
+ fSigmaBBbarArray[6] = fSigmaBBbarArray[5];
+
+// x-sections for Min. Bias p-Pb & Pb-p @ 5.03 TeV: charmonia and bottomonia
+// from 7 TeV numbers scaled according to pQCD ccbar and bbbar x-sections
+// and with Glauber scaling
+ fCMSEnergyTeVArray[7] = 5.00; // for 5.03 TeV
+ fSigmaReactionArray[7] = 2.10;
+ fSigmaJPsiArray[7] = 5.50e-3; // 208*0.787*33.6e-6
+ fSigmaChic1Array[7] = 5.35e-3;
+ fSigmaChic2Array[7] = 8.79e-3;
+ fSigmaPsiPArray[7] = 1.23e-3;
+ fSigmaUpsilonArray[7] = 0.083e-3; // 208*0.716*0.56e-6
+ fSigmaUpsilonPArray[7] = 0.026e-3;
+ fSigmaUpsilonPPArray[7] = 0.011e-3;
+ fSigmaCCbarArray[7] = 1.13; // 208*5.44e-3
+ fSigmaBBbarArray[7] = 0.035; // 208*0.166e-3
+
+ fCMSEnergyTeVArray[8] = -fCMSEnergyTeVArray[7];
+ fSigmaReactionArray[8] = fSigmaReactionArray[7];
+ fSigmaJPsiArray[8] = fSigmaJPsiArray[7];
+ fSigmaChic1Array[8] = fSigmaChic1Array[7];
+ fSigmaChic2Array[8] = fSigmaChic2Array[7];
+ fSigmaPsiPArray[8] = fSigmaPsiPArray[7];
+ fSigmaUpsilonArray[8] = fSigmaUpsilonArray[7];
+ fSigmaUpsilonPArray[8] = fSigmaUpsilonPArray[7];
+ fSigmaUpsilonPPArray[8] = fSigmaUpsilonPPArray[7];
+ fSigmaCCbarArray[8] = fSigmaCCbarArray[7];
+ fSigmaBBbarArray[8] = fSigmaBBbarArray[7];
+
+// x-sections for Min. Bias p-Pb & Pb-p @ 8.8 TeV: charmonia and bottomonia
+// from 7 TeV numbers scaled according to pQCD ccbar and bbbar x-sections
+// and with Glauber scaling
+ fCMSEnergyTeVArray[9] = 9.00; // for 8.8 TeV
+ fSigmaReactionArray[9] = 2.10;
+ fSigmaJPsiArray[9] = 8.19e-3; // 208*1.172*33.6e-6
+ fSigmaChic1Array[9] = 7.95e-3;
+ fSigmaChic2Array[9] = 13.1e-3;
+ fSigmaPsiPArray[9] = 1.85e-3;
+ fSigmaUpsilonArray[9] = 0.146e-3; // 208*1.25*0.56e-6
+ fSigmaUpsilonPArray[9] = 0.047e-3;
+ fSigmaUpsilonPPArray[9] = 0.021e-3;
+ fSigmaCCbarArray[9] = 1.68; // 208*8.1e-3
+ fSigmaBBbarArray[9] = 0.061; // 208*0.29e-3
+
+ fCMSEnergyTeVArray[10] = -fCMSEnergyTeVArray[9];
+ fSigmaReactionArray[10] = fSigmaReactionArray[9];
+ fSigmaJPsiArray[10] = fSigmaJPsiArray[9];
+ fSigmaChic1Array[10] = fSigmaChic1Array[9];
+ fSigmaChic2Array[10] = fSigmaChic2Array[9];
+ fSigmaPsiPArray[10] = fSigmaPsiPArray[9];
+ fSigmaUpsilonArray[10] = fSigmaUpsilonArray[9];
+ fSigmaUpsilonPArray[10] = fSigmaUpsilonPArray[9];
+ fSigmaUpsilonPPArray[10] = fSigmaUpsilonPPArray[9];
+ fSigmaCCbarArray[10] = fSigmaCCbarArray[9];
+ fSigmaBBbarArray[10] = fSigmaBBbarArray[9];
+
// x-sections for Min. Bias Pb-Pb @ 2.76 TeV: charmonia and bottomonia
// from 7 TeV numbers scaled according to pQCD ccbar and bbbar x-sections
// and with Glauber scaling
- fCMSEnergyTeVArray[5] = 3.00; // for 2.76 TeV
- fSigmaReactionArray[5] = 7.65;
- fSigmaJPsiArray[5] = 0.734; // 208*208*0.505*33.6e-6
- fSigmaChic1Array[5] = 0.712;
- fSigmaChic2Array[5] = 1.175;
- fSigmaPsiPArray[5] = 0.166;
- fSigmaUpsilonArray[5] = 0.0092; // 208*208*0.379*0.56e-6
- fSigmaUpsilonPArray[5] = 0.0031;
- fSigmaUpsilonPPArray[5] = 0.0015;
- fSigmaCCbarArray[5] = 151.; // 208*208*3.49e-3
- fSigmaBBbarArray[5] = 3.8; // 208*208*0.088e-3
+ fCMSEnergyTeVArray[11] = 3.00; // for 2.76 TeV
+ fSigmaReactionArray[11] = 7.65;
+ fSigmaJPsiArray[11] = 0.737; // 208*208*0.507*33.6e-6
+ fSigmaChic1Array[11] = 0.715;
+ fSigmaChic2Array[11] = 1.179;
+ fSigmaPsiPArray[11] = 0.166;
+ fSigmaUpsilonArray[11] = 0.0093; // 208*208*0.384*0.56e-6
+ fSigmaUpsilonPArray[11] = 0.0030;
+ fSigmaUpsilonPPArray[11] = 0.0013;
+ fSigmaCCbarArray[11] = 151.; // 208*208*3.50e-3
+ fSigmaBBbarArray[11] = 3.8; // 208*208*0.089e-3
}
// create and add resonances and open HF to the coctail
Int_t cmsEnergy = Int_t(fCMSEnergyTeV);
+ // For temporary use of p-Pb & Pb-p shadowing at 5.03 TeV for lower energies
+ if (cmsEnergy == 2 || cmsEnergy == 4) cmsEnergy = 5;
+ if (cmsEnergy == -2 || cmsEnergy == -4) cmsEnergy = -5;
+
// These limits are only used for renormalization of quarkonia cross section
// Pythia events are generated in 4pi
Double_t ptMin = fPtMin;
Double_t phiMax = fPhiMax*180./TMath::Pi();
AliInfo(Form("Ranges pT:%4.1f : %4.1f GeV/c, y:%4.2f : %4.2f, Phi:%5.1f : %5.1f degres",ptMin,ptMax,yMin,yMax,phiMin,phiMax));
-// Cross sections in barns (from PPR Vol. II p: 552) pp - 14 TeV and
-// corrected from feed down of higher resonances
+// Cross sections in barns
Double_t sigmajpsi = fSigmaJPsi;
Double_t sigmachic1 = fSigmaChic1;
if(TMath::Abs(fUpsPPol) > 1.e-30) {sigmaupsilonP = fSigmaUpsilonP*0.0193;}
if(TMath::Abs(fUpsPPPol) > 1.e-30) {sigmaupsilonPP = fSigmaUpsilonPP*0.0218;}
+// Cross sections scaled to manage the statistics
+
+ sigmajpsi *= fScaleJPsi*fScaleCharmonia;
+ sigmachic1 *= fScaleCharmonia;
+ sigmachic2 *= fScaleCharmonia;
+ sigmapsiP *= fScaleCharmonia;
+ sigmaupsilon *= fScaleBottomonia;
+ sigmaupsilonP *= fScaleBottomonia;
+ sigmaupsilonPP *= fScaleBottomonia;
+ sigmaccbar *= fScaleCCbar;
+ sigmabbbar *= fScaleBBbar;
+
AliInfo(Form("the parametrised resonances uses the decay mode %d",fDecayModeResonance));
// Create and add resonances to the generator
} else if (cmsEnergy == 14){snprintf(tname, 40, "CDF pp");
} else if (cmsEnergy == 7) {snprintf(tname, 40, "pp 7");
// } else if (cmsEnergy == 2) {snprintf(tname, 40, "pp 2.76");
+ } else if (cmsEnergy == 5) {snprintf(tname, 40, "pPb 5.03");
+ if (fCentralityBin > 0) snprintf(tname, 40, "pPb 5.03c%d",fCentralityBin);
+ } else if (cmsEnergy == -5){snprintf(tname, 40, "Pbp 5.03");
+ if (fCentralityBin > 0) snprintf(tname, 40, "Pbp 5.03c%d",fCentralityBin);
} else if (cmsEnergy == 9) {snprintf(tname, 40, "pPb 8.8");
if (fCentralityBin > 0) snprintf(tname, 40, "pPb 8.8c%d",fCentralityBin);
} else if (cmsEnergy == -9){snprintf(tname, 40, "Pbp 8.8");
chard[0] = 1; // 1st element for pp and min. bias (MB) collisions
bhard[0] = 1;
-// 4 centrality bins for p-Pb & Pb-p: 0-20-40-60-100 %
+// 4 centrality bins for p-Pb & Pb-p at 5.03 TeV: 0-20-40-60-100 %
+ if (cmsEnergy == 5 || cmsEnergy == -5) {
+ const Int_t n5 = 5; // 1st element for MB collisions
+ Double_t r5[n5] = {1, 1.936, 1.473, 0.914, 0.333}; // ratio of hard-over-geo fractions
+ Double_t cshad5[n5] = {0.806, 0.742, 0.796, 0.870, 0.955};// EPS09-LO shadowing factors
+ Double_t bshad5[n5] = {0.917, 0.889, 0.913, 0.944, 0.981};
+ for(i=0; i<n5; i++) {
+ chard[i] = cshad5[i]*r5[i];
+ bhard[i] = bshad5[i]*r5[i];
+ }
+ }
+
+// 4 centrality bins for p-Pb & Pb-p at 8.8 TeV: 0-20-40-60-100 %
if (cmsEnergy == 9 || cmsEnergy == -9) {
const Int_t n9 = 5; // 1st element for MB collisions
Double_t r9[n9] = {1, 1.936, 1.473, 0.914, 0.333}; // ratio of hard-over-geo fractions
}
}
-// 11 centrality bins for Pb-Pb: 0-5-10-20-30-40-50-60-70-80-90-100 %
+// 11 centrality bins for Pb-Pb at 2.76 TeV: 0-5-10-20-30-40-50-60-70-80-90-100 %
if (cmsEnergy == 3) {
const Int_t n3 = 12; // 1st element for MB collisions
Double_t r3[n3] = {1, 4.661, 3.647, 2.551, 1.544, 0.887, 0.474,
gencharm->SetMomentumRange(0,9999);
gencharm->SetForceDecay(kAll);
Double_t ratioccbar = chard[fCentralityBin]*sigmaccbar/fSigmaReaction;
- if (!gMC) gencharm->SetDecayer(fDecayer);
+ if (!TVirtualMC::GetMC()) gencharm->SetDecayer(fDecayer);
gencharm->Init();
if (!fSigmaSilent) {
AliInfo(Form("c-cbar prod. cross-section in pp %5.3g b",sigmaccbar));
genbeauty->SetMomentumRange(0,9999);
genbeauty->SetForceDecay(kAll);
Double_t ratiobbbar = bhard[fCentralityBin]*sigmabbbar/fSigmaReaction;
- if (!gMC) genbeauty->SetDecayer(fDecayer);
+ if (!TVirtualMC::GetMC()) genbeauty->SetDecayer(fDecayer);
genbeauty->Init();
if (!fSigmaSilent) {
AliInfo(Form("b-bbar prod. cross-section in pp %5.3g b",sigmabbbar));
genReso->SetYRange(-8.,8.);
genReso->SetPhiRange(0.,360.);
genReso->SetForceDecay(fDecayModeResonance);
- if (!gMC) genReso->SetDecayer(fDecayer);
+ if (!TVirtualMC::GetMC()) genReso->SetDecayer(fDecayer);
genReso->Init(); // generation in 4pi
// Ratios with respect to the reaction cross-section in the
// kinematics limit of the MUONCocktail
Bool_t primordialTrigger = kFALSE;
while(!primordialTrigger) {
- //Reseting stack
+ //Reseting stack (if fMuonMultiplicity > 0 : S. Grigoryan, June 2012)
AliRunLoader * runloader = AliRunLoader::Instance();
- if (runloader)
+ // if (runloader)
+ if (runloader && fMuonMultiplicity > 0)
if (runloader->Stack())
runloader->Stack()->Clean();
// Loop over generators and generate events
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff