// production cross-sections in pp collisions
// July 07:added heavy quark production from AliGenCorrHF and heavy quark
// production switched off in Pythia
+// Aug. 07: added trigger cut on total momentum
+// 2009: added possibility to hide x-sections (B. Vulpescu)
+// 2009: added possibility to have the cocktail (fast generator and param.)
+// for pp @ 10 TeV or pp @ 14 TeV (N. Bastid)
+//-----------------
+// 2009: added polarization (L. Bianchi)
+//------------------
+// 11/2009: added chi_c1 & chi_c2 (P.Crochet & N.Bastid).
+// Cross-sections for charmonia are now directly taken from the Yellow Report
+// (hep-ph/0311048) Tab.9, page 19. See below for details w.r.t. beam energy.
+// usage: see example of Config in $ALICE_ROOT/prod/LHC09a10/Config.C
#include <TObjArray.h>
#include <TParticle.h>
#include "AliStack.h"
#include "AliDecayer.h"
#include "AliLog.h"
-#include "AliGenPythia.h"
#include "AliGenCorrHF.h"
+#include "AliDecayerPolarized.h"
ClassImp(AliGenMUONCocktailpp)
fDecayer(0),
fDecayModeResonance(kAll),
fDecayModePythia(kAll),
- fTotalRate(0),
fMuonMultiplicity(0),
fMuonPtCut(0.),
+ fMuonPCut(0.),
fMuonThetaMinCut(0.),
- fMuonThetaMaxCut(0.),
+ fMuonThetaMaxCut(180.),
fMuonOriginCut(-999.),
fNSucceded(0),
- fNGenerated(0)
+ fNGenerated(0),
+
+ fJpsiPol(0),
+ fChic1Pol(0),
+ fChic2Pol(0),
+ fPsiPPol(0),
+ fUpsPol(0),
+ fUpsPPol(0),
+ fUpsPPPol(0),
+ fPolFrame(0),
+
+// x-sections for pp @ 7 TeV: charmonia from hep-ph/0311048 Tab.9, page 19,
+// bottomnium as for 10 TeV
+/* fCMSEnergy(7),
+ fSigmaReaction(0.0695),
+ fSigmaJPsi(21.8e-6),
+ fSigmaChic1(21.1e-6),
+ fSigmaChic2(34.9e-6),
+ fSigmaPsiP(4.93e-6),
+ fSigmaUpsilon(0.463e-6),
+ fSigmaUpsilonP(0.154e-6),
+ fSigmaUpsilonPP(0.0886e-6),
+ fSigmaCCbar(6.91e-3),
+ fSigmaBBbar(0.232e-3),
+*/
+
+//x-sections for pp @ 10 TeV: charmonia and bottomonia from 14 TeV numbers
+// scaled down according to ccbar and bbar cross-sections
+ fCMSEnergy(10),
+ fSigmaReaction(0.0695),
+ fSigmaJPsi(26.06e-6),
+ fSigmaChic1(25.18e-6),
+ fSigmaChic2(41.58e-6),
+ fSigmaPsiP(5.88e-6),
+ fSigmaUpsilon(0.658e-6),
+ fSigmaUpsilonP(0.218e-6),
+ fSigmaUpsilonPP(0.122e-6),
+ fSigmaCCbar(8.9e-3),
+ fSigmaBBbar(0.33e-3),
+
+
+//x-sections for pp @ 14 TeV: charmonia from hep-ph/0311048 Tab.9, page 19,
+// bottomonium from hep-ph/0311048 Tab.9, page 19 taken inton account that
+// feed-down from chib is included
+/* fCMSEnergy(14),
+ fSigmaReaction(0.070),
+ fSigmaJPsi(32.9e-6),
+ fSigmaChic1(31.8e-6),
+ fSigmaChic2(52.5e-6),
+ fSigmaPsiP(7.43e-6),
+ fSigmaUpsilon(0.989e-6),
+ fSigmaUpsilonP(0.502e-6),
+ fSigmaUpsilonPP(0.228e-6),
+ fSigmaCCbar(11.2e-3),
+ fSigmaBBbar(0.51e-3),
+*/
+ fSigmaSilent(kFALSE)
{
// Constructor
}
}
//_________________________________________________________________________
-void AliGenMUONCocktailpp::Init()
+void AliGenMUONCocktailpp::SetResPolarization(Double_t JpsiPol, Double_t PsiPPol, Double_t UpsPol,
+ Double_t UpsPPol, Double_t UpsPPPol, char *PolFrame){
+
+ if (strcmp(PolFrame,"kColSop")==0){
+ fJpsiPol = (JpsiPol>=-1 && JpsiPol<=1) ? JpsiPol : 0;
+ fPsiPPol = (PsiPPol>=-1 && PsiPPol<=1) ? PsiPPol : 0;
+ fUpsPol = (UpsPol>=-1 && UpsPol<=1) ? UpsPol : 0;
+ fUpsPPol = (UpsPPol>=-1 && UpsPPol<=1) ? UpsPPol : 0;
+ fUpsPPPol = (UpsPPPol>=-1 && UpsPPPol<=1) ? UpsPPPol : 0;
+ fPolFrame = 0;
+ } else if (strcmp(PolFrame,"kHelicity")==0){
+ fJpsiPol = (JpsiPol>=-1 && JpsiPol<=1) ? JpsiPol : 0;
+ fPsiPPol = (PsiPPol>=-1 && PsiPPol<=1) ? PsiPPol : 0;
+ fUpsPol = (UpsPol>=-1 && UpsPol<=1) ? UpsPol : 0;
+ fUpsPPol = (UpsPPol>=-1 && UpsPPol<=1) ? UpsPPol : 0;
+ fUpsPPPol = (UpsPPPol>=-1 && UpsPPPol<=1) ? UpsPPPol : 0;
+ fPolFrame = 1;
+
+ } else {
+ AliInfo(Form("The polarization frame is not valid"));
+ AliInfo(Form("No polarization will be set"));
+ fJpsiPol=0.;
+ fPsiPPol=0.;
+ fUpsPol=0.;
+ fUpsPPol=0.;
+ fUpsPPPol=0.;
+ }
+}
+
+//_________________________________________________________________________
+void AliGenMUONCocktailpp::CreateCocktail()
{
-// MinBias NN cross section @ pp 14 TeV -PR Vol II p:473
- Double_t sigmaReaction = 0.070;
// These limits are only used for renormalization of quarkonia cross section
// Pythia events are generated in 4pi
// Ratios with respect to the reaction cross-section in the
// kinematics limit of the MUONCocktail
Double_t ratiojpsi;
+ Double_t ratiochic1;
+ Double_t ratiochic2;
Double_t ratiopsiP;
Double_t ratioupsilon;
Double_t ratioupsilonP;
Double_t ratioccbar;
Double_t ratiobbbar;
+// Beam energy
+ Int_t cmsEnergy = fCMSEnergy;
+
// Cross sections in barns (from PPR Vol. II p: 552) pp - 14 TeV and
// corrected from feed down of higher resonances
- Double_t sigmajpsi = 49.44e-6;
- Double_t sigmapsiP = 7.67e-6;
- Double_t sigmaupsilon = 0.989e-6;
- Double_t sigmaupsilonP = 0.502e-6;
- Double_t sigmaupsilonPP = 0.228e-6;
- Double_t sigmaccbar = 11.2e-3;
- Double_t sigmabbbar = 0.51e-3;
-
+ Double_t sigmajpsi = fSigmaJPsi;
+ Double_t sigmachic1 = fSigmaChic1;
+ Double_t sigmachic2 = fSigmaChic2;
+ Double_t sigmapsiP = fSigmaPsiP;
+ Double_t sigmaupsilon = fSigmaUpsilon;
+ Double_t sigmaupsilonP = fSigmaUpsilonP;
+ Double_t sigmaupsilonPP = fSigmaUpsilonPP;
+ Double_t sigmaccbar = fSigmaCCbar;
+ Double_t sigmabbbar = fSigmaBBbar;
+
+// Cross sections corrected with the BR in mu+mu-
+// (only in case of use of AliDecayerPolarized)
+
+ if(TMath::Abs(fJpsiPol) > 1.e-30) {sigmajpsi = fSigmaJPsi*0.0593;}
+ if(TMath::Abs(fChic1Pol) > 1.e-30) {sigmachic1 = fSigmaChic1*0.;} // tb consistent
+ if(TMath::Abs(fChic2Pol) > 1.e-30) {sigmachic2 = fSigmaChic2*0.;} // tb consistent
+ if(TMath::Abs(fPsiPPol) > 1.e-30) {sigmapsiP = fSigmaPsiP*0.0075;}
+ if(TMath::Abs(fUpsPol) > 1.e-30) {sigmaupsilon = fSigmaUpsilon*0.0248;}
+ if(TMath::Abs(fUpsPPol) > 1.e-30) {sigmaupsilonP = fSigmaUpsilonP*0.0193;}
+ if(TMath::Abs(fUpsPPPol) > 1.e-30) {sigmaupsilonPP = fSigmaUpsilonPP*0.0218;}
+
+// MinBias NN cross section @ pp 14 TeV -PR Vol II p:473
+ Double_t sigmaReaction = fSigmaReaction;
+
+ Int_t eincStart = 10;
+
AliInfo(Form("the parametrised resonances uses the decay mode %d",fDecayModeResonance));
// Generation using CDF scaled distribution for pp@14TeV (from D. Stocco)
//----------------------------------------------------------------------
// Jpsi generator
- AliGenParam * genjpsi = new AliGenParam(1, AliGenMUONlib::kJpsi, "CDF pp", "Jpsi");
+ AliGenParam * genjpsi;
+ if(cmsEnergy == eincStart){
+ genjpsi = new AliGenParam(1, AliGenMUONlib::kJpsi, "CDF pp 10", "Jpsi");
+ } else {
+ genjpsi = new AliGenParam(1, AliGenMUONlib::kJpsi, "CDF pp ", "Jpsi");
+ }
// first step: generation in 4pi
genjpsi->SetPtRange(0.,100.);
genjpsi->SetYRange(-8.,8.);
genjpsi->SetPhiRange(0.,360.);
genjpsi->SetForceDecay(fDecayModeResonance);
- if (!gMC) genjpsi->SetDecayer(fDecayer);
+ //if (!gMC) genjpsi->SetDecayer(fDecayer);
genjpsi->Init(); // generation in 4pi
ratiojpsi = sigmajpsi / sigmaReaction * genjpsi->GetRelativeArea(ptMin,ptMax,yMin,yMax,phiMin,phiMax); // get weight
- AliInfo(Form("jpsi prod. cross-section in pp(14 TeV) %5.3g b",sigmajpsi));
- AliInfo(Form("jpsi prod. probability per collision in acceptance %5.3g",ratiojpsi));
+ if (!fSigmaSilent) {
+ AliInfo(Form("jpsi prod. cross-section in pp %5.3g b",sigmajpsi));
+ AliInfo(Form("jpsi prod. probability per collision in acceptance %5.3g",ratiojpsi));
+ }
// second step: generation in selected kinematical range
genjpsi->SetPtRange(ptMin, ptMax);
genjpsi->SetYRange(yMin, yMax);
genjpsi->SetPhiRange(phiMin, phiMax);
genjpsi->Init(); // generation in selected kinematic range
+
+ TVirtualMCDecayer *jpsiDec = 0;
+ if(TMath::Abs(fJpsiPol) > 1.e-30){
+ AliInfo(Form("******Setting polarized decayer for J/psi"));
+ if(fPolFrame==0) {
+ jpsiDec = new AliDecayerPolarized(fJpsiPol,AliDecayerPolarized::kColSop,AliDecayerPolarized::kMuon);
+ AliInfo(Form("******Reference frame: %s, alpha: %f","Collins-Soper",fJpsiPol));
+ }
+ if(fPolFrame==1) {
+ jpsiDec = new AliDecayerPolarized(fJpsiPol,AliDecayerPolarized::kHelicity,AliDecayerPolarized::kMuon);
+ AliInfo(Form("******Reference frame: %s, alpha: %f","Helicity",fJpsiPol));
+ }
+ jpsiDec->SetForceDecay(kAll);
+ jpsiDec->Init();
+ genjpsi->SetDecayer(jpsiDec);
+ }
+
AddGenerator(genjpsi, "Jpsi", ratiojpsi); // Adding Generator
- fTotalRate+=ratiojpsi;
-
+
+
+//----------------------------------------------------------------------
+// Chic1 generator
+ AliGenParam * genchic1;
+ if(cmsEnergy == eincStart){
+ genchic1 = new AliGenParam(1, AliGenMUONlib::kChic1, "CDF pp 10", "Chic1");
+ } else {
+ genchic1 = new AliGenParam(1, AliGenMUONlib::kChic1, "CDF pp ", "Chic1");
+ }
+// first step: generation in 4pi
+ genchic1->SetPtRange(0.,100.);
+ genchic1->SetYRange(-8.,8.);
+ genchic1->SetPhiRange(0.,360.);
+ genchic1->SetForceDecay(fDecayModeResonance);
+ //if (!gMC) genchic1->SetDecayer(fDecayer);
+
+ genchic1->Init(); // generation in 4pi
+ ratiochic1 = sigmachic1 / sigmaReaction * genchic1->GetRelativeArea(ptMin,ptMax,yMin,yMax,phiMin,phiMax); // get weight
+ if (!fSigmaSilent) {
+ AliInfo(Form("chic1 prod. cross-section in pp %5.3g b",sigmachic1));
+ AliInfo(Form("chic1 prod. probability per collision in acceptance %5.3g",ratiochic1));
+ }
+// second step: generation in selected kinematical range
+ genchic1->SetPtRange(ptMin, ptMax);
+ genchic1->SetYRange(yMin, yMax);
+ genchic1->SetPhiRange(phiMin, phiMax);
+ genchic1->Init(); // generation in selected kinematic range
+
+ TVirtualMCDecayer *chic1Dec = 0;
+ if(fChic1Pol != 0){
+ AliInfo(Form("******Setting polarized decayer for Chic1"));
+ if(fPolFrame==0) {
+ chic1Dec = new AliDecayerPolarized(fChic1Pol,AliDecayerPolarized::kColSop,AliDecayerPolarized::kMuon);
+ AliInfo(Form("******Reference frame: %s, alpha: %f","Collins-Soper",fChic1Pol));
+ }
+ if(fPolFrame==1) {
+ chic1Dec = new AliDecayerPolarized(fChic1Pol,AliDecayerPolarized::kHelicity,AliDecayerPolarized::kMuon);
+ AliInfo(Form("******Reference frame: %s, alpha: %f","Helicity",fChic1Pol));
+ }
+ chic1Dec->SetForceDecay(kAll);
+ chic1Dec->Init();
+ genchic1->SetDecayer(chic1Dec);
+ }
+
+ AddGenerator(genchic1, "Chic1", ratiochic1); // Adding Generator
+
+//----------------------------------------------------------------------
+// Chic2 generator
+ AliGenParam * genchic2;
+ if(cmsEnergy == eincStart){
+ genchic2 = new AliGenParam(1, AliGenMUONlib::kChic2, "CDF pp 10", "Chic2");
+ } else {
+ genchic2 = new AliGenParam(1, AliGenMUONlib::kChic2, "CDF pp ", "Chic2");
+ }
+// first step: generation in 4pi
+ genchic2->SetPtRange(0.,100.);
+ genchic2->SetYRange(-8.,8.);
+ genchic2->SetPhiRange(0.,360.);
+ genchic2->SetForceDecay(fDecayModeResonance);
+ //if (!gMC) genchic1->SetDecayer(fDecayer);
+
+ genchic2->Init(); // generation in 4pi
+ ratiochic2 = sigmachic2 / sigmaReaction * genchic2->GetRelativeArea(ptMin,ptMax,yMin,yMax,phiMin,phiMax); // get weight
+ if (!fSigmaSilent) {
+ AliInfo(Form("chic2 prod. cross-section in pp %5.3g b",sigmachic2));
+ AliInfo(Form("chic2 prod. probability per collision in acceptance %5.3g",ratiochic2));
+ }
+// second step: generation in selected kinematical range
+ genchic2->SetPtRange(ptMin, ptMax);
+ genchic2->SetYRange(yMin, yMax);
+ genchic2->SetPhiRange(phiMin, phiMax);
+ genchic2->Init(); // generation in selected kinematic range
+
+ TVirtualMCDecayer *chic2Dec = 0;
+ if(fChic2Pol != 0){
+ AliInfo(Form("******Setting polarized decayer for Chic2"));
+ if(fPolFrame==0) {
+ chic2Dec = new AliDecayerPolarized(fChic2Pol,AliDecayerPolarized::kColSop,AliDecayerPolarized::kMuon);
+ AliInfo(Form("******Reference frame: %s, alpha: %f","Collins-Soper",fChic2Pol));
+ }
+ if(fPolFrame==1) {
+ chic2Dec = new AliDecayerPolarized(fChic2Pol,AliDecayerPolarized::kHelicity,AliDecayerPolarized::kMuon);
+ AliInfo(Form("******Reference frame: %s, alpha: %f","Helicity",fChic2Pol));
+ }
+ chic2Dec->SetForceDecay(kAll);
+ chic2Dec->Init();
+ genchic2->SetDecayer(chic2Dec);
+ }
+
+ AddGenerator(genchic2, "Chic2", ratiochic2); // Adding Generator
+
//------------------------------------------------------------------
// Psi prime generator
- AliGenParam * genpsiP = new AliGenParam(1, AliGenMUONlib::kPsiP, "CDF pp", "PsiP");
+ AliGenParam * genpsiP;
+ if(cmsEnergy == eincStart){
+ genpsiP = new AliGenParam(1, AliGenMUONlib::kPsiP, "CDF pp 10", "PsiP");
+ } else {
+ genpsiP = new AliGenParam(1, AliGenMUONlib::kPsiP, "CDF pp", "PsiP");
+ }
// first step: generation in 4pi
genpsiP->SetPtRange(0.,100.);
genpsiP->SetYRange(-8.,8.);
genpsiP->SetPhiRange(0.,360.);
genpsiP->SetForceDecay(fDecayModeResonance);
- if (!gMC) genpsiP->SetDecayer(fDecayer);
+ //if (!gMC) genpsiP->SetDecayer(fDecayer);
genpsiP->Init(); // generation in 4pi
ratiopsiP = sigmapsiP / sigmaReaction * genpsiP->GetRelativeArea(ptMin,ptMax,yMin,yMax,phiMin,phiMax);
- AliInfo(Form("psiP prod. cross-section in pp(14 TeV) %5.3g b",sigmapsiP));
- AliInfo(Form("psiP prod. probability per collision in acceptance %5.3g",ratiopsiP));
+ if (!fSigmaSilent) {
+ AliInfo(Form("psiP prod. cross-section in pp %5.3g b",sigmapsiP));
+ AliInfo(Form("psiP prod. probability per collision in acceptance %5.3g",ratiopsiP));
+ }
// second step: generation in selected kinematical range
genpsiP->SetPtRange(ptMin, ptMax);
genpsiP->SetYRange(yMin, yMax);
genpsiP->SetPhiRange(phiMin, phiMax);
genpsiP->Init(); // generation in selected kinematic range
+
+ TVirtualMCDecayer *psipDec = 0;
+ if(TMath::Abs(fPsiPPol) > 1.e-30){
+ AliInfo(Form("******Setting polarized decayer for psi'"));
+ if(fPolFrame==0) {
+ psipDec = new AliDecayerPolarized(fPsiPPol,AliDecayerPolarized::kColSop,AliDecayerPolarized::kMuon);
+ AliInfo(Form("******Reference frame: %s, alpha: %f","Collins-Soper",fPsiPPol));
+ }
+ if(fPolFrame==1) {
+ psipDec = new AliDecayerPolarized(fPsiPPol,AliDecayerPolarized::kHelicity,AliDecayerPolarized::kMuon);
+ AliInfo(Form("******Reference frame: %s, alpha: %f","Helicity",fPsiPPol));
+ }
+ psipDec->SetForceDecay(kAll);
+ psipDec->Init();
+ genpsiP->SetDecayer(psipDec);
+ }
+
AddGenerator(genpsiP, "PsiP", ratiopsiP); // Adding Generator
- fTotalRate+=ratiopsiP;
-
+
//------------------------------------------------------------------
// Upsilon 1S generator
- AliGenParam * genupsilon = new AliGenParam(1, AliGenMUONlib::kUpsilon, "CDF pp", "Upsilon");
+ AliGenParam * genupsilon;
+ if(cmsEnergy == eincStart) {
+ genupsilon = new AliGenParam(1, AliGenMUONlib::kUpsilon, "CDF pp 10", "Upsilon");
+ } else {
+ genupsilon = new AliGenParam(1, AliGenMUONlib::kUpsilon, "CDF pp", "Upsilon");
+ }
// first step: generation in 4pi
genupsilon->SetPtRange(0.,100.);
genupsilon->SetYRange(-8.,8.);
genupsilon->SetPhiRange(0.,360.);
genupsilon->SetForceDecay(fDecayModeResonance);
- if (!gMC) genupsilon->SetDecayer(fDecayer);
+ //if (!gMC) genupsilon->SetDecayer(fDecayer);
genupsilon->Init(); // generation in 4pi
ratioupsilon = sigmaupsilon / sigmaReaction * genupsilon->GetRelativeArea(ptMin,ptMax,yMin,yMax,phiMin,phiMax);
- AliInfo(Form("Upsilon 1S prod. cross-section in pp(14 TeV) %5.3g b",sigmaupsilon));
- AliInfo(Form("Upsilon 1S prod. probability per collision in acceptance %5.3g",ratioupsilon));
+ if (!fSigmaSilent) {
+ AliInfo(Form("Upsilon 1S prod. cross-section in pp %5.3g b",sigmaupsilon));
+ AliInfo(Form("Upsilon 1S prod. probability per collision in acceptance %5.3g",ratioupsilon));
+ }
// second step: generation in selected kinematical range
genupsilon->SetPtRange(ptMin, ptMax);
genupsilon->SetYRange(yMin, yMax);
genupsilon->SetPhiRange(phiMin, phiMax);
genupsilon->Init(); // generation in selected kinematical range
+
+ TVirtualMCDecayer *upsDec = 0;
+ if(TMath::Abs(fUpsPol) > 1.e-30){
+ AliInfo(Form("******Setting polarized decayer for Upsilon"));
+ if(fPolFrame==0) {
+ upsDec = new AliDecayerPolarized(fUpsPol,AliDecayerPolarized::kColSop,AliDecayerPolarized::kMuon);
+ AliInfo(Form("******Reference frame: %s, alpha: %f","Collins-Soper",fUpsPol));
+ }
+ if(fPolFrame==1) {
+ upsDec = new AliDecayerPolarized(fUpsPol,AliDecayerPolarized::kHelicity,AliDecayerPolarized::kMuon);
+ AliInfo(Form("******Reference frame: %s, alpha: %f","Helicity",fUpsPol));
+ }
+ upsDec->SetForceDecay(kAll);
+ upsDec->Init();
+ genupsilon->SetDecayer(upsDec);
+ }
+
AddGenerator(genupsilon,"Upsilon", ratioupsilon); // Adding Generator
- fTotalRate+=ratioupsilon;
-
//------------------------------------------------------------------
// Upsilon 2S generator
- AliGenParam * genupsilonP = new AliGenParam(1, AliGenMUONlib::kUpsilonP, "CDF pp", "UpsilonP");
+ AliGenParam * genupsilonP;
+ if(cmsEnergy == eincStart){
+ genupsilonP = new AliGenParam(1, AliGenMUONlib::kUpsilonP, "CDF pp 10", "UpsilonP");
+ } else {
+ genupsilonP = new AliGenParam(1, AliGenMUONlib::kUpsilonP, "CDF pp", "UpsilonP");
+ }
+
// first step: generation in 4pi
genupsilonP->SetPtRange(0.,100.);
genupsilonP->SetYRange(-8.,8.);
genupsilonP->SetPhiRange(0.,360.);
genupsilonP->SetForceDecay(fDecayModeResonance);
- if (!gMC) genupsilonP->SetDecayer(fDecayer);
+ //if (!gMC) genupsilonP->SetDecayer(fDecayer);
genupsilonP->Init(); // generation in 4pi
ratioupsilonP = sigmaupsilonP / sigmaReaction * genupsilonP->GetRelativeArea(ptMin,ptMax,yMin,yMax,phiMin,phiMax);
- AliInfo(Form("Upsilon 2S prod. cross-section in pp(14 TeV) %5.3g b",sigmaupsilonP));
- AliInfo(Form("Upsilon 2S prod. probability per collision in acceptance %5.3g",ratioupsilonP));
+ if (!fSigmaSilent) {
+ AliInfo(Form("Upsilon 2S prod. cross-section in pp %5.3g b",sigmaupsilonP));
+ AliInfo(Form("Upsilon 2S prod. probability per collision in acceptance %5.3g",ratioupsilonP));
+ }
// second step: generation in the kinematical range
genupsilonP->SetPtRange(ptMin, ptMax);
genupsilonP->SetYRange(yMin, yMax);
genupsilonP->SetPhiRange(phiMin, phiMax);
genupsilonP->Init(); // generation in selected kinematical range
+
+ TVirtualMCDecayer *upspDec = 0;
+ if(TMath::Abs(fUpsPPol) > 1.e-30){
+ AliInfo(Form("******Setting polarized decayer for Upsilon'"));
+ if(fPolFrame==0) {
+ upspDec = new AliDecayerPolarized(fUpsPPol,AliDecayerPolarized::kColSop,AliDecayerPolarized::kMuon);
+ AliInfo(Form("******Reference frame: %s, alpha: %f","Collins-Soper",fUpsPPol));
+ }
+ if(fPolFrame==1) {
+ upspDec = new AliDecayerPolarized(fUpsPPol,AliDecayerPolarized::kHelicity,AliDecayerPolarized::kMuon);
+ AliInfo(Form("******Reference frame: %s, alpha: %f","Helicity",fUpsPPol));
+ }
+ upspDec->SetForceDecay(kAll);
+ upspDec->Init();
+ genupsilonP->SetDecayer(upspDec);
+ }
+
AddGenerator(genupsilonP,"UpsilonP", ratioupsilonP); // Adding Generator
- fTotalRate+=ratioupsilonP;
//------------------------------------------------------------------
// Upsilon 3S generator
- AliGenParam * genupsilonPP = new AliGenParam(1, AliGenMUONlib::kUpsilonPP, "CDF pp", "UpsilonPP");
+ AliGenParam * genupsilonPP;
+ if(cmsEnergy == eincStart){
+ genupsilonPP = new AliGenParam(1, AliGenMUONlib::kUpsilonPP, "CDF pp 10", "UpsilonPP");
+ }
+ else {
+ genupsilonPP = new AliGenParam(1, AliGenMUONlib::kUpsilonPP, "CDF pp", "UpsilonPP");
+ }
+
// first step: generation in 4pi
genupsilonPP->SetPtRange(0.,100.);
genupsilonPP->SetYRange(-8.,8.);
genupsilonPP->SetPhiRange(0.,360.);
genupsilonPP->SetForceDecay(fDecayModeResonance);
- if (!gMC) genupsilonPP->SetDecayer(fDecayer);
+ //if (!gMC) genupsilonPP->SetDecayer(fDecayer);
genupsilonPP->Init(); // generation in 4pi
ratioupsilonPP = sigmaupsilonPP / sigmaReaction * genupsilonPP->GetRelativeArea(ptMin,ptMax,yMin,yMax,phiMin,phiMax);
- AliInfo(Form("Upsilon 3S prod. cross-section in pp(14 TeV) %5.3g b",sigmaupsilonPP));
- AliInfo(Form("Upsilon 3S prod. probability per collision in acceptance %5.3g",ratioupsilonPP));
+ if (!fSigmaSilent) {
+ AliInfo(Form("Upsilon 3S prod. cross-section in pp %5.3g b",sigmaupsilonPP));
+ AliInfo(Form("Upsilon 3S prod. probability per collision in acceptance %5.3g",ratioupsilonPP));
+ }
// second step: generation in selected kinematical range
genupsilonPP->SetPtRange(ptMin, ptMax);
genupsilonPP->SetYRange(yMin, yMax);
genupsilonPP->SetPhiRange(phiMin, phiMax);
genupsilonPP->Init(); // generation in selected kinematical range
+
+ TVirtualMCDecayer *upsppDec = 0;
+ if(fUpsPPPol != 0){
+ AliInfo(Form("******Setting polarized decayer for Upsilon''"));
+ if(fPolFrame==0) {
+ upsppDec = new AliDecayerPolarized(fUpsPPPol,AliDecayerPolarized::kColSop,AliDecayerPolarized::kMuon);
+ AliInfo(Form("******Reference frame: %s, alpha: %f","Collins-Soper",fUpsPPPol));
+ }
+ if(fPolFrame==1) {
+ upsppDec = new AliDecayerPolarized(fUpsPPPol,AliDecayerPolarized::kHelicity,AliDecayerPolarized::kMuon);
+ AliInfo(Form("******Reference frame: %s, alpha: %f","Helicity",fUpsPPPol));
+ }
+ upsppDec->SetForceDecay(kAll);
+ upsppDec->Init();
+ genupsilonPP->SetDecayer(upsppDec);
+ }
+
AddGenerator(genupsilonPP,"UpsilonPP", ratioupsilonPP); // Adding Generator
- fTotalRate+=ratioupsilonPP;
//------------------------------------------------------------------
// Generator of charm
- AliGenCorrHF *gencharm = new AliGenCorrHF(1, 4);
- gencharm->SetMomentumRange(0,9999);
- gencharm->SetForceDecay(kAll);
- ratioccbar = sigmaccbar/sigmaReaction;
- gencharm->Init();
- AddGenerator(gencharm,"CorrHFCharm",ratioccbar);
- fTotalRate+=ratioccbar;
+ AliGenCorrHF *gencharm = new AliGenCorrHF(1, 4, cmsEnergy);
+ gencharm->SetMomentumRange(0,9999);
+ gencharm->SetForceDecay(kAll);
+ ratioccbar = sigmaccbar/sigmaReaction;
+ //if (!gMC) gencharm->SetDecayer(fDecayer);
+ gencharm->Init();
+ if (!fSigmaSilent) {
+ AliInfo(Form("c-cbar prod. cross-section in pp %5.3g b",sigmaccbar));
+ AliInfo(Form("c-cbar prod. probability per collision in acceptance %5.3g",ratioccbar));
+ }
+ AddGenerator(gencharm,"CorrHFCharm",ratioccbar);
//------------------------------------------------------------------
// Generator of beauty
- AliGenCorrHF *genbeauty = new AliGenCorrHF(1, 5);
- genbeauty->SetMomentumRange(0,9999);
- genbeauty->SetForceDecay(kAll);
- ratiobbbar = sigmabbbar/sigmaReaction;
- genbeauty->Init();
- AddGenerator(genbeauty,"CorrHFBeauty",ratiobbbar);
- fTotalRate+=ratiobbbar;
+ AliGenCorrHF *genbeauty = new AliGenCorrHF(1, 5, cmsEnergy);
+ genbeauty->SetMomentumRange(0,9999);
+ genbeauty->SetForceDecay(kAll);
+ ratiobbbar = sigmabbbar/sigmaReaction;
+ //if (!gMC) genbeauty->SetDecayer(fDecayer);
+ genbeauty->Init();
+ if (!fSigmaSilent) {
+ AliInfo(Form("b-bbar prod. cross-section in pp %5.3g b",sigmabbbar));
+ AliInfo(Form("b-bbar prod. probability per collision in acceptance %5.3g",ratiobbbar));
+ }
+ AddGenerator(genbeauty,"CorrHFBeauty",ratiobbbar);
-//--------------------------t----------------------------------------
+//-------------------------------------------------------------------
// Pythia generator
- AliGenPythia *pythia = new AliGenPythia(1);
- pythia->SetProcess(kPyMbMSEL1);
- pythia->SetStrucFunc(kCTEQ5L);
- pythia->SetEnergyCMS(14000.);
- AliInfo(Form("\n\npythia uses the decay mode %d",fDecayModePythia));
- pythia->SetForceDecay(fDecayModePythia);
- pythia->SetPtRange(0.,100.);
- pythia->SetYRange(-8.,8.);
- pythia->SetPhiRange(0.,360.);
- pythia->SetPtHard(2.76,-1.0);
- pythia->SwitchHFOff();
- pythia->Init();
- AddGenerator(pythia,"Pythia",1);
- fTotalRate+=1.;
+//
+// This has to go into the Config.C
+//
+// AliGenPythia *pythia = new AliGenPythia(1);
+// pythia->SetProcess(kPyMbMSEL1);
+// pythia->SetStrucFunc(kCTEQ5L);
+// pythia->SetEnergyCMS(14000.);
+// AliInfo(Form("\n\npythia uses the decay mode %d", GetDecayModePythia()));
+// Decay_t dt = gener->GetDecayModePythia();
+// pythia->SetForceDecay(dt);
+// pythia->SetPtRange(0.,100.);
+// pythia->SetYRange(-8.,8.);
+// pythia->SetPhiRange(0.,360.);
+// pythia->SetPtHard(2.76,-1.0);
+// pythia->SwitchHFOff();
+// pythia->Init();
+// AddGenerator(pythia,"Pythia",1);
+
+}
+void AliGenMUONCocktailpp::Init()
+{
+ //
+ // Initialisation
TIter next(fEntries);
AliGenCocktailEntry *entry;
if (fStack) {
AliGenCocktailEntry *preventry = 0;
AliGenerator* gen = 0;
- TObjArray *partArray = gAlice->GetMCApp()->Particles();
+ if (fHeader) delete fHeader;
+ fHeader = new AliGenCocktailEventHeader("MUON Cocktail Header");
+
+ const TObjArray *partArray = gAlice->GetMCApp()->Particles();
// Generate the vertex position used by all generators
if(fVertexSmear == kPerEvent) Vertex();
Bool_t primordialTrigger = kFALSE;
while(!primordialTrigger) {
//Reseting stack
- AliRunLoader * runloader = gAlice->GetRunLoader();
+ AliRunLoader * runloader = AliRunLoader::Instance();
if (runloader)
if (runloader->Stack())
- runloader->Stack()->Reset();
+ runloader->Stack()->Clean();
// Loop over generators and generate events
Int_t igen = 0;
Int_t npart = 0;
if((part->Vz() > fMuonOriginCut) && //take only the muons that decayed before the abs + 1 int. length in C abs
(part->Theta()*180./TMath::Pi()>fMuonThetaMinCut) &&
(part->Theta()*180./TMath::Pi()<fMuonThetaMaxCut) &&
- (part->Pt()>fMuonPtCut)) {
+ (part->Pt()>fMuonPtCut) &&
+ (part->P()>fMuonPCut)) {
numberOfMuons++;
}
}
}
- if (numberOfMuons >= fMuonMultiplicity) primordialTrigger = kTRUE;
+ if (numberOfMuons >= fMuonMultiplicity) {
+ primordialTrigger = kTRUE;
+ fHeader->SetNProduced(maxPart);
+ }
+
}
fNSucceded++;
+ TArrayF eventVertex;
+ eventVertex.Set(3);
+ for (Int_t j=0; j < 3; j++) eventVertex[j] = fVertex[j];
+
+ fHeader->SetPrimaryVertex(eventVertex);
+
+ gAlice->SetGenEventHeader(fHeader);
+
// AliInfo(Form("Generated Events are %d and Succeeded Events are %d",fNGenerated,fNSucceded));
AliDebug(5,Form("Generated Events are %d and Succeeded Events are %d",fNGenerated,fNSucceded));
}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff