From 6ccd5a7260f4bf49e73e4239cd028fe31d9f69d1 Mon Sep 17 00:00:00 2001 From: hristov Date: Thu, 10 Apr 2003 16:50:42 +0000 Subject: [PATCH] Heavy flavor generation with Pythia tuned to reproduce Mangano-Nason-Ridolfi calculations (A.Dainese) --- macros/Config_PythiaHeavyFlavours.C | 558 ++++++++++++++++++++++++++++ 1 file changed, 558 insertions(+) create mode 100644 macros/Config_PythiaHeavyFlavours.C diff --git a/macros/Config_PythiaHeavyFlavours.C b/macros/Config_PythiaHeavyFlavours.C new file mode 100644 index 00000000000..5ccc17dc77f --- /dev/null +++ b/macros/Config_PythiaHeavyFlavours.C @@ -0,0 +1,558 @@ +//*******************************************************************// +// Configuration file for charm / beauty generation with PYTHIA // +// // +// The parameters have been tuned in order to reproduce the inclusive// +// heavy quark pt distribution given by the NLO pQCD calculation by // +// Mangano, Nason and Ridolfi. // +// // +// For details and for the NORMALIZATION of the yields see: // +// - "Charm and beauty production at the LHC", ALICE note submitted // +// and available at: http://www.pd.infn.it/alipd/Docs.html // +// - Current version of the ALICE PPR (Chapter 6.5) // +// at: http://alice.web.cern.ch/Alice/ppr/web/CurrentVersion.html // +//*******************************************************************// + +//--- Heavy Flavour Production --- +enum ProcessHvFl_t +{ + kCharmPbPb5500, kCharmpPb8800, kCharmpp14000, + kD0PbPb5500, kD0pPb8800, kD0pp14000, + kBeautyPbPb5500, kBeautypPb8800, kBeautypp14000 +}; +//--- Decay Mode --- +enum DecayHvFl_t +{ + kNature, kHadr, kSemiEl, kSemiMu +}; +//--- Rapidity Cut --- +enum YCut_t +{ + kFull, kBarrel, kMuonArm +}; +//--- Magnetic Field --- +enum Mag_t +{ + k2kG, k4kG, k5kG +}; + +// This part for configuration +static ProcessHvFl_t procHvFl = kCharmPbPb5500; +static DecayHvFl_t decHvFl = kNature; +static YCut_t ycut = kFull; +static Mag_t mag = k4kG; +// nEvts = -1 : you get 1 QQbar pair and all the fragmentation and +// decay chain +// nEvts = N>0 : you get N charm / beauty Hadrons +Int_t nEvts = -1; +// stars = kTRUE : all heavy resonances and their decay stored +// = kFALSE: only final heavy hadrons and their decays stored +Bool_t stars = kTRUE; + + +// Comment line +static TString comment; + +void Config() +{ + + //========================// + // Set Random Number seed // + //========================// + TDatime dt; + UInt_t curtime=dt.Get(); + UInt_t procid=gSystem->GetPid(); + UInt_t seed=curtime-procid; + + gRandom->SetSeed(12345); + cerr<<"Seed for random number generation= "<Load("libgeant321"); + + new TGeant3("C++ Interface to Geant3"); + + //======================================================================= + // Create the output file + TFile *rootfile = new TFile("galice.root","recreate"); + rootfile->SetCompressionLevel(2); + TGeant3 *geant3 = (TGeant3*)gMC; + // + // + //======================================================================= + // ******* GEANT STEERING parameters FOR ALICE SIMULATION ******* + geant3->SetTRIG(1); //Number of events to be processed + geant3->SetSWIT(4,10); + geant3->SetDEBU(0,0,1); + //geant3->SetSWIT(2,2); + geant3->SetDCAY(1); + geant3->SetPAIR(1); + geant3->SetCOMP(1); + geant3->SetPHOT(1); + geant3->SetPFIS(0); + geant3->SetDRAY(0); + geant3->SetANNI(1); + geant3->SetBREM(1); + geant3->SetMUNU(1); + geant3->SetCKOV(1); + geant3->SetHADR(1); //Select pure GEANH (HADR 1) or GEANH/NUCRIN (HADR 3) + geant3->SetLOSS(2); + geant3->SetMULS(1); + geant3->SetRAYL(1); + geant3->SetAUTO(1); //Select automatic STMIN etc... calc. (AUTO 1) or manual (AUTO 0) + geant3->SetABAN(0); //Restore 3.16 behaviour for abandoned tracks + geant3->SetOPTI(2); //Select optimisation level for GEANT geometry searches (0,1,2) + geant3->SetERAN(5.e-7); + + Float_t cut = 1.e-3; // 1MeV cut by default + Float_t tofmax = 1.e10; + // GAM ELEC NHAD CHAD MUON EBREM MUHAB EDEL MUDEL MUPA TOFMAX + geant3->SetCUTS(cut,cut, cut, cut, cut, cut, cut, cut, cut, cut, tofmax); + // + //======================================================================= + // ************* STEERING parameters FOR ALICE SIMULATION ************** + // --- Specify event type to be tracked through the ALICE setup + // --- All positions are in cm, angles in degrees, and P and E in GeV + //======================// + // Set External decayer // + //======================// + TVirtualMCDecayer* decayer = new AliDecayerPythia(); + // DECAYS + // + switch(decHvFl) { + case kNature: + decayer->SetForceDecay(kAll); + break; + case kHadr: + decayer->SetForceDecay(kHadronicD); + break; + case kSemiEl: + decayer->SetForceDecay(kSemiElectronic); + break; + case kSemiMu: + decayer->SetForceDecay(kSemiMuonic); + break; + } + decayer->Init(); + gMC->SetExternalDecayer(decayer); + + //=========================// + // Generator Configuration // + //=========================// + AliGenPythia *pythia = PythiaHVQ(procHvFl); + // FeedDown option + pythia->SetFeedDownHigherFamily(kFALSE); + // Stack filling option + if(!stars) pythia->SetStackFillOpt(AliGenPythia::kParentSelection); + // Set Count mode + if(nEvts>0) pythia->SetCountMode(AliGenPythia::kCountParents); + // DECAYS + // + switch(decHvFl) { + case kNature: + pythia->SetForceDecay(kAll); + break; + case kHadr: + pythia->SetForceDecay(kHadronicD); + break; + case kSemiEl: + pythia->SetForceDecay(kSemiElectronic); + break; + case kSemiMu: + pythia->SetForceDecay(kSemiMuonic); + break; + } + // GEOM & KINE CUTS + // + pythia->SetMomentumRange(0,99999999); + pythia->SetPhiRange(-180.,180.); + pythia->SetThetaRange(0,180); + switch(ycut) { + case kFull: + pythia->SetYRange(-999,999); + break; + case kBarrel: + pythia->SetYRange(-2,2); + break; + case kMuonArm: + pythia->SetYRange(1,6); + break; + } + + // PRIMARY VERTEX + // + pythia->SetOrigin(0, 0, 0); // vertex position + pythia->SetSigma(0, 0, 5.3); // Sigma in (X,Y,Z) (cm) on IP position + pythia->SetCutVertexZ(1.); // Truncate at 1 sigma + pythia->SetVertexSmear(kPerEvent); + + + + pythia->SetTrackingFlag(0); + // Specify GEANT tracking limits (Rmax, Zmax) + //gAlice->TrackingLimits(90.,1.0e10); + + + pythia->Init(); + + // FIELD + // + if (mag == k2kG) { + comment = comment.Append(" | L3 field 0.2 T"); + } else if (mag == k4kG) { + comment = comment.Append(" | L3 field 0.4 T"); + } else if (mag == k5kG) { + comment = comment.Append(" | L3 field 0.5 T"); + } + printf("\n \n Comment: %s \n \n", (char*) comment); + + AliMagFMaps* field = new AliMagFMaps("Maps","Maps", 2, 1., 10., mag); + rootfile->cd(); + gAlice->SetField(field); + + + // By default all ALICE is switched off + Int_t iABSO=0; + Int_t iCRT=0; + Int_t iDIPO=0; + Int_t iFMD=0; + Int_t iFRAME=0; + Int_t iHALL=0; + Int_t iITS=0; + Int_t iMAG=0; + Int_t iMUON=0; + Int_t iPHOS=0; + Int_t iPIPE=0; + Int_t iPMD=0; + Int_t iRICH=0; + Int_t iSHIL=0; + Int_t iSTART=0; + Int_t iTOF=0; + Int_t iTPC=0; + Int_t iTRD=0; + Int_t iZDC=0; + + //=================== Alice BODY parameters ============================= + AliBODY *BODY = new AliBODY("BODY","Alice envelop"); + + if(iMAG) { + //=================== MAG parameters ============================ + // --- Start with Magnet since detector layouts may be depending --- + // --- on the selected Magnet dimensions --- + AliMAG *MAG = new AliMAG("MAG","Magnet"); + } + + + if(iABSO) { + //=================== ABSO parameters ============================ + AliABSO *ABSO = new AliABSOv0("ABSO","Muon Absorber"); + } + + if(iDIPO) { + //=================== DIPO parameters ============================ + + AliDIPO *DIPO = new AliDIPOv2("DIPO","Dipole version 2"); + } + + if(iHALL) { + //=================== HALL parameters ============================ + + AliHALL *HALL = new AliHALL("HALL","Alice Hall"); + } + + + if(iFRAME) { + //=================== FRAME parameters ============================ + + AliFRAME *FRAME = new AliFRAMEv2("FRAME","Space Frame"); + + } + + if(iSHIL) { + //=================== SHIL parameters ============================ + + AliSHIL *SHIL = new AliSHILv2("SHIL","Shielding"); + } + + + if(iPIPE) { + //=================== PIPE parameters ============================ + + AliPIPE *PIPE = new AliPIPEv0("PIPE","Beam Pipe"); + } + + + if(iITS) { + +//=================== ITS parameters ============================ + // + // As the innermost detector in ALICE, the Inner Tracking System "impacts" on + // almost all other detectors. This involves the fact that the ITS geometry + // still has several options to be followed in parallel in order to determine + // the best set-up which minimizes the induced background. All the geometries + // available to date are described in the following. Read carefully the comments + // and use the default version (the only one uncommented) unless you are making + // comparisons and you know what you are doing. In this case just uncomment the + // ITS geometry you want to use and run Aliroot. + // + // Detailed geometries: + // + // + //AliITS *ITS = new AliITSv5symm("ITS","Updated ITS TDR detailed version with symmetric services"); + // + //AliITS *ITS = new AliITSv5asymm("ITS","Updates ITS TDR detailed version with asymmetric services"); + // + AliITSvPPRasymm *ITS = new AliITSvPPRasymm("ITS","New ITS PPR detailed version with asymmetric services"); + ITS->SetMinorVersion(2); // don't touch this parameter if you're not an ITS developer + ITS->SetReadDet(kFALSE); // don't touch this parameter if you're not an ITS developer + ITS->SetWriteDet("$ALICE_ROOT/ITS/ITSgeometry_vPPRasymm2.det"); // don't touch this parameter if you're not an ITS developer + ITS->SetThicknessDet1(200.); // detector thickness on layer 1 must be in the range [150,300] + ITS->SetThicknessDet2(200.); // detector thickness on layer 2 must be in the range [150,300] + ITS->SetThicknessChip1(200.); // chip thickness on layer 1 must be in the range [100,300] + ITS->SetThicknessChip2(200.); // chip thickness on layer 2 must be in the range [100,300] + ITS->SetRails(1); // 1 --> rails in ; 0 --> rails out + ITS->SetCoolingFluid(1); // 1 --> water ; 0 --> freon + // + //AliITSvPPRsymm *ITS = new AliITSvPPRsymm("ITS","New ITS PPR detailed version with symmetric services"); + //ITS->SetMinorVersion(2); // don't touch this parameter if you're not an ITS developer + //ITS->SetReadDet(kFALSE); // don't touch this parameter if you're not an ITS developer + //ITS->SetWriteDet("$ALICE_ROOT/ITS/ITSgeometry_vPPRsymm2.det"); // don't touch this parameter if you're not an ITS developer + //ITS->SetThicknessDet1(300.); // detector thickness on layer 1 must be in the range [150,300] + //ITS->SetThicknessDet2(300.); // detector thickness on layer 2 must be in the range [150,300] + //ITS->SetThicknessChip1(300.); // chip thickness on layer 1 must be in the range [100,300] + //ITS->SetThicknessChip2(300.); // chip thickness on layer 2 must be in the range [100,300] + //ITS->SetRails(1); // 1 --> rails in ; 0 --> rails out + //ITS->SetCoolingFluid(1); // 1 --> water ; 0 --> freon + // + // + // Coarse geometries (warning: no hits are produced with these coarse geometries and they unuseful + // for reconstruction !): + // + // + //AliITSvPPRcoarseasymm *ITS = new AliITSvPPRcoarseasymm("ITS","New ITS PPR coarse version with asymmetric services"); + //ITS->SetRails(1); // 1 --> rails in ; 0 --> rails out + //ITS->SetSupportMaterial(0); // 0 --> Copper ; 1 --> Aluminum ; 2 --> Carbon + // + //AliITS *ITS = new AliITSvPPRcoarsesymm("ITS","New ITS PPR coarse version with symmetric services"); + //ITS->SetRails(1); // 1 --> rails in ; 0 --> rails out + //ITS->SetSupportMaterial(0); // 0 --> Copper ; 1 --> Aluminum ; 2 --> Carbon + // + // + // + // Geant3 <-> EUCLID conversion + // ============================ + // + // SetEUCLID is a flag to output (=1) or not to output (=0) both geometry and + // media to two ASCII files (called by default ITSgeometry.euc and + // ITSgeometry.tme) in a format understandable to the CAD system EUCLID. + // The default (=0) means that you dont want to use this facility. + // + ITS->SetEUCLID(0); + } + + + if(iTPC) { + //============================ TPC parameters ================================ + // --- This allows the user to specify sectors for the SLOW (TPC geometry 2) + // --- Simulator. SecAL (SecAU) <0 means that ALL lower (upper) + // --- sectors are specified, any value other than that requires at least one + // --- sector (lower or upper)to be specified! + // --- Reminder: sectors 1-24 are lower sectors (1-12 -> z>0, 13-24 -> z<0) + // --- sectors 25-72 are the upper ones (25-48 -> z>0, 49-72 -> z<0) + // --- SecLows - number of lower sectors specified (up to 6) + // --- SecUps - number of upper sectors specified (up to 12) + // --- Sens - sensitive strips for the Slow Simulator !!! + // --- This does NOT work if all S or L-sectors are specified, i.e. + // --- if SecAL or SecAU < 0 + // + // + //----------------------------------------------------------------------------- + + // gROOT->LoadMacro("SetTPCParam.C"); + // AliTPCParam *param = SetTPCParam(); + AliTPC *TPC = new AliTPCv2("TPC","Default"); + // All sectors included + TPC->SetSecAL(-1); + TPC->SetSecAU(-1); + + } + + + if(iTOF) { + //=================== TOF parameters ============================ + AliTOF *TOF = new AliTOFv2("TOF","normal TOF"); + } + + if(iRICH) { + //=================== RICH parameters =========================== + AliRICH *RICH = new AliRICHv1("RICH","normal RICH"); + + } + + + if(iZDC) { + //=================== ZDC parameters ============================ + + AliZDC *ZDC = new AliZDCv1("ZDC","normal ZDC"); + } + + if(iCRT) { + //=================== CRT parameters ============================ + + AliCRT *CRT = new AliCRTv1("CRT","normal CRT"); + } + + if(iTRD) { + //=================== TRD parameters ============================ + + AliTRD *TRD = new AliTRDv1("TRD","TRD slow simulator"); + + // Select the gas mixture (0: 97% Xe + 3% isobutane, 1: 90% Xe + 10% CO2) + TRD->SetGasMix(1); + + // With hole in front of PHOS + TRD->SetPHOShole(); + // With hole in front of RICH + TRD->SetRICHhole(); + // Switch on TR + AliTRDsim *TRDsim = TRD->CreateTR(); + } + + if(iFMD) { + //=================== FMD parameters ============================ + + AliFMD *FMD = new AliFMDv0("FMD","normal FMD"); + } + + if(iMUON) { + //=================== MUON parameters =========================== + AliMUON *MUON = new AliMUONv1("MUON","default"); + } + + //=================== PHOS parameters =========================== + + if(iPHOS) { + AliPHOS *PHOS = new AliPHOSv1("PHOS","GPS2"); + } + + + //=================== CRT parameters =========================== + + if(iCRT) { + AliCRT *CRT = new AliCRTv1("CRT","Normal CRTGPS2"); + } + + + if(iPMD) { + //=================== PMD parameters ============================ + + AliPMD *PMD = new AliPMDv1("PMD","normal PMD"); + PMD->SetPAR(1., 1., 0.8, 0.02); + PMD->SetIN(6., 18., -580., 27., 27.); + PMD->SetGEO(0.0, 0.2, 4.); + PMD->SetPadSize(0.8, 1.0, 1.0, 1.5); + + } + + if(iSTART) { + //=================== START parameters ============================ + AliSTART *START = new AliSTARTv1("START","START Detector"); + } + + +} +// +// PYTHIA +// +AliGenPythia *PythiaHVQ(ProcessHvFl_t proc) { + + switch(proc) { + case kCharmPbPb5500: + comment = comment.Append(" Charm in Pb-Pb at 5.5 TeV"); + AliGenPythia *gener = new AliGenPythia(nEvts); + gener->SetProcess(kPyCharmPbPbMNR); + gener->SetStrucFunc(kCTEQ4L); + gener->SetPtHard(2.1,-1.0); + gener->SetEnergyCMS(5500.); + gener->SetNuclei(208,208); + break; + case kCharmpPb8800: + comment = comment.Append(" Charm in p-Pb at 8.8 TeV"); + AliGenPythia *gener = new AliGenPythia(nEvts); + gener->SetProcess(kPyCharmpPbMNR); + gener->SetStrucFunc(kCTEQ4L); + gener->SetPtHard(2.1,-1.0); + gener->SetEnergyCMS(8800.); + gener->SetProjectile("P",1,1); + gener->SetTarget("Pb",208,82); + break; + case kCharmpp14000: + comment = comment.Append(" Charm in pp at 14 TeV"); + AliGenPythia *gener = new AliGenPythia(nEvts); + gener->SetProcess(kPyCharmppMNR); + gener->SetStrucFunc(kCTEQ4L); + gener->SetPtHard(2.1,-1.0); + gener->SetEnergyCMS(14000.); + break; + case kD0PbPb5500: + comment = comment.Append(" D0 in Pb-Pb at 5.5 TeV"); + AliGenPythia *gener = new AliGenPythia(nEvts); + gener->SetProcess(kPyD0PbPbMNR); + gener->SetStrucFunc(kCTEQ4L); + gener->SetPtHard(2.1,-1.0); + gener->SetEnergyCMS(5500.); + gener->SetNuclei(208,208); + break; + case kD0pPb8800: + comment = comment.Append(" D0 in p-Pb at 8.8 TeV"); + AliGenPythia *gener = new AliGenPythia(nEvts); + gener->SetProcess(kPyD0pPbMNR); + gener->SetStrucFunc(kCTEQ4L); + gener->SetPtHard(2.1,-1.0); + gener->SetEnergyCMS(8800.); + gener->SetProjectile("P",1,1); + gener->SetTarget("Pb",208,82); + break; + case kD0pp14000: + comment = comment.Append(" D0 in pp at 14 TeV"); + AliGenPythia *gener = new AliGenPythia(nEvts); + gener->SetProcess(kPyD0ppMNR); + gener->SetStrucFunc(kCTEQ4L); + gener->SetPtHard(2.1,-1.0); + gener->SetEnergyCMS(14000.); + break; + case kBeautyPbPb5500: + comment = comment.Append(" Beauty in Pb-Pb at 5.5 TeV"); + AliGenPythia *gener = new AliGenPythia(nEvts); + gener->SetProcess(kPyBeautyPbPbMNR); + gener->SetStrucFunc(kCTEQ4L); + gener->SetPtHard(2.75,-1.0); + gener->SetEnergyCMS(5500.); + gener->SetNuclei(208,208); + break; + case kBeautypPb8800: + comment = comment.Append(" Beauty in p-Pb at 8.8 TeV"); + AliGenPythia *gener = new AliGenPythia(nEvts); + gener->SetProcess(kPyBeautypPbMNR); + gener->SetStrucFunc(kCTEQ4L); + gener->SetPtHard(2.75,-1.0); + gener->SetEnergyCMS(8800.); + gener->SetProjectile("P",1,1); + gener->SetTarget("Pb",208,82); + break; + case kBeautypp14000: + comment = comment.Append(" Beauty in pp at 14 TeV"); + AliGenPythia *gener = new AliGenPythia(nEvts); + gener->SetProcess(kPyBeautyppMNR); + gener->SetStrucFunc(kCTEQ4L); + gener->SetPtHard(2.75,-1.0); + gener->SetEnergyCMS(14000.); + break; + } + + return gener; +} + + + + + -- 2.43.0