X-Git-Url: http://git.uio.no/git/?a=blobdiff_plain;f=PYTHIA6%2FAliPythia.cxx;h=e7e8d01af71b76c51f169cf90ca2a8a218f0abff;hb=ef185c83909bd08da827e281ef05ae4b85a6b53b;hp=d06a45cb40f52f793152296b9efd9f2b4250ff5e;hpb=9dfe63b3acc53f2b492e03c9a5a6d3838b2de37f;p=u%2Fmrichter%2FAliRoot.git diff --git a/PYTHIA6/AliPythia.cxx b/PYTHIA6/AliPythia.cxx index d06a45cb40f..e7e8d01af71 100644 --- a/PYTHIA6/AliPythia.cxx +++ b/PYTHIA6/AliPythia.cxx @@ -1,4 +1,3 @@ - /************************************************************************** * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * * * @@ -20,7 +19,9 @@ #include "AliPythiaRndm.h" #include "AliFastGlauber.h" #include "AliQuenchingWeights.h" +#include "AliOmegaDalitz.h" #include "TVector3.h" +#include "TLorentzVector.h" #include "PyquenCommon.h" ClassImp(AliPythia) @@ -33,6 +34,9 @@ ClassImp(AliPythia) # define pyquen pyquen_ # define pyevnw pyevnw_ # define pyshowq pyshowq_ +# define qpygin0 qpygin0_ +# define pytune pytune_ +# define py2ent py2ent_ # define type_of_call #else # define pyclus PYCLUS @@ -41,6 +45,9 @@ ClassImp(AliPythia) # define pyquen PYQUEN # define pyevnw PYEVNW # define pyshowq PYSHOWQ +# define qpygin0 QPYGIN0 +# define pytune PYTUNE +# define py2ent PY2ENT # define type_of_call _stdcall #endif @@ -51,7 +58,9 @@ extern "C" void type_of_call pyrobo(Int_t &, Int_t &, Double_t &, Double_t &, Do extern "C" void type_of_call pyquen(Double_t &, Int_t &, Double_t &); extern "C" void type_of_call pyevnw(){;} extern "C" void type_of_call pyshowq(Int_t &, Int_t &, Double_t &); - +extern "C" void type_of_call pytune(Int_t &); +extern "C" void type_of_call py2ent(Int_t &, Int_t&, Int_t&, Double_t&); +extern "C" void type_of_call qpygin0(); //_____________________________________________________________________________ AliPythia* AliPythia::fgAliPythia=NULL; @@ -65,7 +74,9 @@ AliPythia::AliPythia(): fNGmax(30), fZmax(0.97), fGlauber(0), - fQuenchingWeights(0) + fQuenchingWeights(0), + fItune(-1), + fOmegaDalitz() { // Default Constructor // @@ -87,18 +98,22 @@ AliPythia::AliPythia(const AliPythia& pythia): fNGmax(30), fZmax(0.97), fGlauber(0), - fQuenchingWeights(0) + fQuenchingWeights(0), + fItune(-1), + fOmegaDalitz() { // Copy Constructor pythia.Copy(*this); } -void AliPythia::ProcInit(Process_t process, Float_t energy, StrucFunc_t strucfunc) +void AliPythia::ProcInit(Process_t process, Float_t energy, StrucFunc_t strucfunc, Int_t itune) { // Initialise the process to generate if (!AliPythiaRndm::GetPythiaRandom()) AliPythiaRndm::SetPythiaRandom(GetRandom()); + fItune = itune; + fProcess = process; fEcms = energy; fStrucFunc = strucfunc; @@ -107,7 +122,6 @@ void AliPythia::ProcInit(Process_t process, Float_t energy, StrucFunc_t strucfun SetMDCY(Pycomp(310) ,1,0); // K0S SetMDCY(Pycomp(3122),1,0); // kLambda SetMDCY(Pycomp(3112),1,0); // sigma - - SetMDCY(Pycomp(3212),1,0); // sigma 0 SetMDCY(Pycomp(3222),1,0); // sigma + SetMDCY(Pycomp(3312),1,0); // xi - SetMDCY(Pycomp(3322),1,0); // xi 0 @@ -246,6 +260,20 @@ void AliPythia::ProcInit(Process_t process, Float_t energy, StrucFunc_t strucfun AtlasTuning(); break; + + case kPyMbAtlasTuneMC09: +// Minimum Bias pp-Collisions +// +// +// select Pythia min. bias model + SetMSEL(0); + SetMSUB(92,1); // single diffraction AB-->XB + SetMSUB(93,1); // single diffraction AB-->AX + SetMSUB(94,1); // double diffraction + SetMSUB(95,1); // low pt production + + AtlasTuning_MC09(); + break; case kPyMbWithDirectPhoton: // Minimum Bias pp-Collisions with direct photon processes added @@ -278,7 +306,6 @@ void AliPythia::ProcInit(Process_t process, Float_t energy, StrucFunc_t strucfun SetMSUB(93,1); // single diffraction AB-->AX SetMSUB(94,1); // double diffraction SetMSUB(95,1); // low pt production - break; case kPyLhwgMb: // Les Houches Working Group 05 Minimum Bias pp-Collisions: hep-ph/0604120 @@ -342,7 +369,7 @@ void AliPythia::ProcInit(Process_t process, Float_t energy, StrucFunc_t strucfun SetPARP(85,0.90) ; // Regulates gluon prod. mechanism SetPARP(86,0.95); // Regulates gluon prod. mechanism SetPARP(89,1800.); // [GeV] Ref. energy - SetPARP(90,0.25); // 2*epsilon (exponent in power law) + SetPARP(90,0.25); // 2*epsilon (exponent in power law) break; case kPyDirectGamma: SetMSEL(10); @@ -390,6 +417,7 @@ void AliPythia::ProcInit(Process_t process, Float_t energy, StrucFunc_t strucfun case kPyD0ppMNR: case kPyDPlusppMNR: case kPyDPlusStrangeppMNR: + case kPyLambdacppMNR: // Tuning of Pythia parameters aimed to get a resonable agreement // between with the NLO calculation by Mangano, Nason, Ridolfi for the // c-cbar single inclusive and double differential distributions. @@ -576,9 +604,14 @@ void AliPythia::ProcInit(Process_t process, Float_t energy, StrucFunc_t strucfun } // // Initialize PYTHIA +// +// Select the tune + if (itune > -1) Pytune(itune); + +// SetMSTP(41,1); // all resonance decays switched on Initialize("CMS","p","p",fEcms); - + fOmegaDalitz.Init(); } Int_t AliPythia::CheckedLuComp(Int_t kf) @@ -687,6 +720,48 @@ void AliPythia::Pyrobo(Int_t imi, Int_t ima, Double_t the, Double_t phi, Double_ pyrobo(imi, ima, the, phi, bex, bey, bez); } +void AliPythia::Pytune(Int_t itune) +{ +/* +C +C ITUNE NAME (detailed descriptions below) +C 0 Default : No settings changed => linked Pythia version's defaults. +C ====== Old UE, Q2-ordered showers ========================================== +C 100 A : Rick Field's CDF Tune A +C 101 AW : Rick Field's CDF Tune AW +C 102 BW : Rick Field's CDF Tune BW +C 103 DW : Rick Field's CDF Tune DW +C 104 DWT : Rick Field's CDF Tune DW with slower UE energy scaling +C 105 QW : Rick Field's CDF Tune QW (NB: needs CTEQ6.1M pdfs externally) +C 106 ATLAS-DC2: Arthur Moraes' (old) ATLAS tune (ATLAS DC2 / Rome) +C 107 ACR : Tune A modified with annealing CR +C 108 D6 : Rick Field's CDF Tune D6 (NB: needs CTEQ6L pdfs externally) +C 109 D6T : Rick Field's CDF Tune D6T (NB: needs CTEQ6L pdfs externally) +C ====== Intermediate Models ================================================= +C 200 IM 1 : Intermediate model: new UE, Q2-ordered showers, annealing CR +C 201 APT : Tune A modified to use pT-ordered final-state showers +C ====== New UE, interleaved pT-ordered showers, annealing CR ================ +C 300 S0 : Sandhoff-Skands Tune 0 +C 301 S1 : Sandhoff-Skands Tune 1 +C 302 S2 : Sandhoff-Skands Tune 2 +C 303 S0A : S0 with "Tune A" UE energy scaling +C 304 NOCR : New UE "best try" without colour reconnections +C 305 Old : New UE, original (primitive) colour reconnections +C 306 ATLAS-CSC: Arthur Moraes' (new) ATLAS tune (needs CTEQ6L externally) +C ======= The Uppsala models ================================================= +C ( NB! must be run with special modified Pythia 6.215 version ) +C ( available from http://www.isv.uu.se/thep/MC/scigal/ ) +C 400 GAL 0 : Generalized area-law model. Old parameters +C 401 SCI 0 : Soft-Colour-Interaction model. Old parameters +C 402 GAL 1 : Generalized area-law model. Tevatron MB retuned (Skands) +*/ + pytune(itune); +} + +void AliPythia::Py2ent(Int_t idx, Int_t pdg1, Int_t pdg2, Double_t p){ + // Inset 2-parton system at line idx + py2ent(idx, pdg1, pdg2, p); +} void AliPythia::InitQuenching(Float_t cMin, Float_t cMax, Float_t k, Int_t iECMethod, Float_t zmax, Int_t ngmax) @@ -1273,6 +1348,11 @@ void AliPythia::Pyshowq(Int_t ip1, Int_t ip2, Double_t qmax) // pyshowq(ip1, ip2, qmax); } + void AliPythia::Qpygin0() + { + // New multiple interaction scenario + qpygin0(); + } void AliPythia::GetQuenchingParameters(Double_t& xp, Double_t& yp, Double_t z[4]) { @@ -1292,10 +1372,13 @@ void AliPythia::ConfigHeavyFlavor() // SetMSEL(1); - // No multiple interactions - SetMSTP(81,0); - SetPARP(81, 0.); - SetPARP(82, 0.); + + if (fItune < 0) { + // No multiple interactions + SetMSTP(81,0); + SetPARP(81, 0.); + SetPARP(82, 0.); + } // Initial/final parton shower on (Pythia default) SetMSTP(61,1); SetMSTP(71,1); @@ -1312,18 +1395,53 @@ void AliPythia::AtlasTuning() { // // Configuration for the ATLAS tuning - SetMSTP(51, AliStructFuncType::PDFsetIndex(kCTEQ5L)); // CTEQ5L pdf - SetMSTP(81,1); // Multiple Interactions ON - SetMSTP(82,4); // Double Gaussian Model - SetPARP(81,1.9); // Min. pt for multiple interactions (default in 6.2-14) - SetPARP(82,1.8); // [GeV] PT_min at Ref. energy - SetPARP(89,1000.); // [GeV] Ref. energy - SetPARP(90,0.16); // 2*epsilon (exponent in power law) - SetPARP(83,0.5); // Core density in proton matter distribution (def.value) - SetPARP(84,0.5); // Core radius - SetPARP(85,0.33); // Regulates gluon prod. mechanism - SetPARP(86,0.66); // Regulates gluon prod. mechanism - SetPARP(67,1); // Regulates Initial State Radiation + if (fItune > -1) return; + printf("ATLAS TUNE \n"); + + SetMSTP(51, AliStructFuncType::PDFsetIndex(kCTEQ5L)); // CTEQ5L pdf + SetMSTP(81,1); // Multiple Interactions ON + SetMSTP(82,4); // Double Gaussian Model + SetPARP(81,1.9); // Min. pt for multiple interactions (default in 6.2-14) + SetPARP(82,1.8); // [GeV] PT_min at Ref. energy + SetPARP(89,1000.); // [GeV] Ref. energy + SetPARP(90,0.16); // 2*epsilon (exponent in power law) + SetPARP(83,0.5); // Core density in proton matter distribution (def.value) + SetPARP(84,0.5); // Core radius + SetPARP(85,0.33); // Regulates gluon prod. mechanism + SetPARP(86,0.66); // Regulates gluon prod. mechanism + SetPARP(67,1); // Regulates Initial State Radiation +} + +void AliPythia::AtlasTuning_MC09() +{ + // + // Configuration for the ATLAS tuning + if (fItune > -1) return; + printf("ATLAS New TUNE MC09\n"); + SetMSTP(81,21); // treatment for MI, ISR, FSR and beam remnants: MI on, new model + SetMSTP(82, 4); // Double Gaussian Model + SetMSTP(52, 2); // External PDF + SetMSTP(51, 20650); // MRST LO* + + + SetMSTP(70, 0); // (was 2: def manual 1, def code 0) virtuality scale for ISR + SetMSTP(72, 1); // (was 0: def 1) maximum scale for FSR + SetMSTP(88, 1); // (was 0: def 1) strategy for qq junction to di-quark or baryon in beam remnant + SetMSTP(90, 0); // (was 1: def 0) strategy of compensate the primordial kT + + SetPARP(78, 0.3); // the amount of color reconnection in the final state + SetPARP(80, 0.1); // probability of color partons kicked out from beam remnant + SetPARP(82, 2.3); // [GeV] PT_min at Ref. energy + SetPARP(83, 0.8); // Core density in proton matter distribution (def.value) + SetPARP(84, 0.7); // Core radius + SetPARP(90, 0.25); // 2*epsilon (exponent in power law) + SetPARJ(81, 0.29); // (was 0.14: def 0.29) Labmda value in running alpha_s for parton showers + + SetMSTP(95, 6); + SetPARJ(41, 0.3); // a and b parameters of the symmm. Lund FF + SetPARJ(42, 0.58); + SetPARJ(46, 0.75); // mod. of the Lund FF for heavy end-point quarks + SetPARP(89,1800.); // [GeV] Ref. energy } AliPythia& AliPythia::operator=(const AliPythia& rhs) @@ -1341,3 +1459,30 @@ AliPythia& AliPythia::operator=(const AliPythia& rhs) Fatal("Copy","Not implemented!\n"); } +void AliPythia::DalitzDecays() +{ + + // + // Replace all omega dalitz decays with the correct matrix element decays + // + Int_t nt = fPyjets->N; + for (Int_t i = 0; i < nt; i++) { + if (fPyjets->K[1][i] != 223) continue; + Int_t fd = fPyjets->K[3][i] - 1; + Int_t ld = fPyjets->K[4][i] - 1; + if (fd < 0) continue; + if ((ld - fd) != 2) continue; + if ((fPyjets->K[1][fd] != 111) || + ((TMath::Abs(fPyjets->K[1][fd+1]) != 11) && (TMath::Abs(fPyjets->K[1][fd+1]) != 13))) + continue; + TLorentzVector omega(fPyjets->P[0][i], fPyjets->P[1][i], fPyjets->P[2][i], fPyjets->P[3][i]); + Int_t pdg = TMath::Abs(fPyjets->K[1][fd+1]); + fOmegaDalitz.Decay(pdg, &omega); + for (Int_t j = 0; j < 3; j++) { + for (Int_t k = 0; k < 4; k++) { + TLorentzVector vec = (fOmegaDalitz.Products())[2-j]; + fPyjets->P[k][fd+j] = vec[k]; + } + } + } +}