[u/mrichter/AliRoot.git] / EVGEN / AliGenMUONCocktailpp.cxx

/**************************************************************************
 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
 *                                                                        *
 * Author: The ALICE Off-line Project.                                    *
 * Contributors are mentioned in the code where appropriate.              *
 *                                                                        *
 * Permission to use, copy, modify and distribute this software and its   *
 * documentation strictly for non-commercial purposes is hereby granted   *
 * without fee, provided that the above copyright notice appears in all   *
 * copies and that both the copyright notice and this permission notice   *
 * appear in the supporting documentation. The authors make no claims     *
 * about the suitability of this software for any purpose. It is          *
 * provided "as is" without express or implied warranty.                  *
 **************************************************************************/

/* $Id$ */

//
// Classe to create the coktail for physics with muons for pp at 14 TeV
// The followoing sources: 
// jpsi,psiP, upsilon, upsilonP, upsilonPP are added to Pythia
// The free parameeters are :
//      pp reaction cross-section
//      production cross-sections in pp collisions 
// 

#include <TObjArray.h>
#include <TParticle.h>
#include <TF1.h>

#include "AliGenCocktailEventHeader.h"

#include "AliGenCocktailEntry.h"
#include "AliGenMUONCocktailpp.h"
#include "AliGenMUONlib.h"
#include "AliGenParam.h"
#include "AliMC.h"
#include "AliRun.h"
#include "AliStack.h"
#include "AliLog.h"
#include "AliGenPythia.h"


ClassImp(AliGenMUONCocktailpp)  
  
//________________________________________________________________________
AliGenMUONCocktailpp::AliGenMUONCocktailpp()
    :AliGenCocktail(),
     fTotalRate(0),
     fMuonMultiplicity(0),
     fMuonPtCut(0.),
     fMuonThetaMinCut(0.),
     fMuonThetaMaxCut(0.),
     fNSucceded(0),
     fNGenerated(0)
{
// Constructor
}
//_________________________________________________________________________
AliGenMUONCocktailpp::AliGenMUONCocktailpp(const AliGenMUONCocktailpp & cocktail):
    AliGenCocktail(cocktail),
    fTotalRate(0),
    fMuonMultiplicity(0),
    fMuonPtCut(0.),
    fMuonThetaMinCut(0.),
    fMuonThetaMaxCut(0.),
    fNSucceded(0),
    fNGenerated(0)
{
// Copy constructor
  fTotalRate =0;
  fNSucceded=0; 
  fNGenerated=0;
  fMuonMultiplicity=0;
  fMuonPtCut=0.;
  fMuonThetaMinCut=0.; 
  fMuonThetaMaxCut=0.;
}
//_________________________________________________________________________
AliGenMUONCocktailpp::~AliGenMUONCocktailpp()
// Destructor
{
    
}

//_________________________________________________________________________
void AliGenMUONCocktailpp::Init()
{
// 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  
    Double_t ptMin  = fPtMin;
    Double_t ptMax  = fPtMax;
    Double_t yMin   = fYMin;;
    Double_t yMax   = fYMax;;
    Double_t phiMin = fPhiMin*180./TMath::Pi();
    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));
    
// Ratios with respect to the reaction cross-section in the 
// kinematics limit of the MUONCocktail
    Double_t ratiojpsi;
    Double_t ratiopsiP;
    Double_t ratioupsilon;
    Double_t ratioupsilonP;
    Double_t ratioupsilonPP;
    
// 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;
    
// Generation using CDF scaled distribution for pp@14TeV (from D. Stocco)
//----------------------------------------------------------------------
// Jpsi generator
    AliGenParam * 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(kAll);
    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));
// 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
    AddGenerator(genjpsi, "Jpsi", ratiojpsi); // Adding Generator
    fTotalRate+=ratiojpsi;
    
//------------------------------------------------------------------
// Psi prime generator
    AliGenParam * 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(kAll);
    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));
// 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
    AddGenerator(genpsiP, "PsiP", ratiopsiP); // Adding Generator
    fTotalRate+=ratiopsiP;
    
//------------------------------------------------------------------
// Upsilon 1S generator
    AliGenParam * 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(kAll);
    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));
// 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
    AddGenerator(genupsilon,"Upsilon", ratioupsilon); // Adding Generator
    fTotalRate+=ratioupsilon;
    
//------------------------------------------------------------------
// Upsilon 2S generator
    AliGenParam * 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(kAll);
    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));
// 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
    AddGenerator(genupsilonP,"UpsilonP", ratioupsilonP); // Adding Generator
    fTotalRate+=ratioupsilonP;
    
//------------------------------------------------------------------
// Upsilon 3S generator
    AliGenParam * 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(kAll);
    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));
// 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
    AddGenerator(genupsilonPP,"UpsilonPP", ratioupsilonPP); // Adding Generator
    fTotalRate+=ratioupsilonPP;
    
//------------------------------------------------------------------
// Pythia generator
    AliGenPythia *pythia = new AliGenPythia(1);
    pythia->SetProcess(kPyMbMSEL1);
    pythia->SetStrucFunc(kCTEQ5L);
    pythia->SetEnergyCMS(14000.);
    pythia->SetForceDecay(kAll);
    pythia->SetPtRange(0.,100.);
    pythia->SetYRange(-8.,8.);
    pythia->SetPhiRange(0.,360.);
    pythia->SetPtHard(2.76,-1.0);
    pythia->Init(); 
    AddGenerator(pythia,"Pythia",1);
    fTotalRate+=1.;

}

//_________________________________________________________________________
void AliGenMUONCocktailpp::Generate()
{
// Generate event 
    TIter next(fEntries);
    AliGenCocktailEntry *entry = 0;
    AliGenCocktailEntry *preventry = 0;
    AliGenerator* gen = 0;

    TObjArray *partArray = gAlice->GetMCApp()->Particles();
    
// Generate the vertex position used by all generators    
    if(fVertexSmear == kPerEvent) Vertex();

// Loop on primordialTrigger: 
// minimum muon multiplicity above a pt cut in a theta acceptance region

    Bool_t primordialTrigger = kFALSE;
    while(!primordialTrigger) {
	//Reseting stack
	AliRunLoader * runloader = gAlice->GetRunLoader();
	if (runloader)
	    if (runloader->Stack())
		runloader->Stack()->Reset();
	// Loop over generators and generate events
	Int_t igen = 0;
	Int_t npart = 0;	
	const char* genName = 0;
	while((entry = (AliGenCocktailEntry*)next())) {
	    gen = entry->Generator();
	    genName = entry->GetName();
	    gen->SetVertex(fVertex.At(0), fVertex.At(1), fVertex.At(2));

	    npart = (strcmp(genName,"Pythia") == 0) ? 1 :
		gRandom->Poisson(entry->Rate());

	    if (npart > 0) {
		igen++;	
		if (igen == 1) entry->SetFirst(0);		
		else  entry->SetFirst((partArray->GetEntriesFast())+1);
		
		gen->SetNumberParticles(npart);		
		gen->Generate();
		entry->SetLast(partArray->GetEntriesFast());
		preventry = entry;
	    }
	}  
	next.Reset();

// Testing primordial trigger: Single muons or dimuons with Pt above a Pt cut 
// in the muon spectrometer acceptance
	Int_t iPart;
	fNGenerated++;
	Int_t numberOfMuons=0;	
  	
	for(iPart=0; iPart<partArray->GetEntriesFast(); iPart++){      
	    
	    if ( (TMath::Abs(gAlice->GetMCApp()->Particle(iPart)->GetPdgCode())==13)  &&
		 (gAlice->GetMCApp()->Particle(iPart)->Theta()*180./TMath::Pi()>fMuonThetaMinCut) &&
		 (gAlice->GetMCApp()->Particle(iPart)->Theta()*180./TMath::Pi()<fMuonThetaMaxCut) &&
		 (gAlice->GetMCApp()->Particle(iPart)->Pt()>fMuonPtCut)                             ) { 
 
		numberOfMuons++;
	    }
	}
	
	if (numberOfMuons >= fMuonMultiplicity) primordialTrigger = kTRUE;
    }
    fNSucceded++;

    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));
}
Commit	Line	Data
103ac317	1	/**************************************************************************
	2	* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
	3	* *
	4	* Author: The ALICE Off-line Project. *
	5	* Contributors are mentioned in the code where appropriate. *
	6	* *
	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	**************************************************************************/
	15
	16	/* $Id$ */
	17
	18	//
	19	// Classe to create the coktail for physics with muons for pp at 14 TeV
	20	// The followoing sources:
	21	// jpsi,psiP, upsilon, upsilonP, upsilonPP are added to Pythia
	22	// The free parameeters are :
	23	// pp reaction cross-section
	24	// production cross-sections in pp collisions
	25	//
	26
	27	#include <TObjArray.h>
	28	#include <TParticle.h>
	29	#include <TF1.h>
	30
	31	#include "AliGenCocktailEventHeader.h"
	32
	33	#include "AliGenCocktailEntry.h"
	34	#include "AliGenMUONCocktailpp.h"
	35	#include "AliGenMUONlib.h"
	36	#include "AliGenParam.h"
	37	#include "AliMC.h"
	38	#include "AliRun.h"
	39	#include "AliStack.h"
	40	#include "AliLog.h"
	41	#include "AliGenPythia.h"
	42
	43
	44	ClassImp(AliGenMUONCocktailpp)
	45
	46	//________________________________________________________________________
	47	AliGenMUONCocktailpp::AliGenMUONCocktailpp()
1c56e311	48	:AliGenCocktail(),
	49	fTotalRate(0),
	50	fMuonMultiplicity(0),
	51	fMuonPtCut(0.),
18bc0c8e	52	fMuonThetaMinCut(0.),
1c56e311	53	fMuonThetaMaxCut(0.),
18bc0c8e	54	fNSucceded(0),
1c56e311	55	fNGenerated(0)
103ac317	56	{
103ac317	57	// Constructor
103ac317	58	}
	59	//_________________________________________________________________________
	60	AliGenMUONCocktailpp::AliGenMUONCocktailpp(const AliGenMUONCocktailpp & cocktail):
1c56e311	61	AliGenCocktail(cocktail),
	62	fTotalRate(0),
	63	fMuonMultiplicity(0),
	64	fMuonPtCut(0.),
18bc0c8e	65	fMuonThetaMinCut(0.),
1c56e311	66	fMuonThetaMaxCut(0.),
18bc0c8e	67	fNSucceded(0),
1c56e311	68	fNGenerated(0)
103ac317	69	{
103ac317	70	// Copy constructor
18bc0c8e	71	fTotalRate =0;
	72	fNSucceded=0;
	73	fNGenerated=0;
	74	fMuonMultiplicity=0;
	75	fMuonPtCut=0.;
	76	fMuonThetaMinCut=0.;
	77	fMuonThetaMaxCut=0.;
103ac317	78	}
	79	//_________________________________________________________________________
	80	AliGenMUONCocktailpp::~AliGenMUONCocktailpp()
	81	// Destructor
	82	{
	83
	84	}
	85
	86	//_________________________________________________________________________
	87	void AliGenMUONCocktailpp::Init()
	88	{
	89	// MinBias NN cross section @ pp 14 TeV -PR Vol II p:473
	90	Double_t sigmaReaction = 0.070;
	91
	92	// These limits are only used for renormalization of quarkonia cross section
	93	// Pythia events are generated in 4pi
	94	Double_t ptMin = fPtMin;
	95	Double_t ptMax = fPtMax;
	96	Double_t yMin = fYMin;;
	97	Double_t yMax = fYMax;;
	98	Double_t phiMin = fPhiMin*180./TMath::Pi();
	99	Double_t phiMax = fPhiMax*180./TMath::Pi();
	100	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));
	101
	102	// Ratios with respect to the reaction cross-section in the
	103	// kinematics limit of the MUONCocktail
	104	Double_t ratiojpsi;
	105	Double_t ratiopsiP;
	106	Double_t ratioupsilon;
	107	Double_t ratioupsilonP;
	108	Double_t ratioupsilonPP;
	109
18bc0c8e	110	// Cross sections in barns (from PPR Vol. II p: 552) pp - 14 TeV and
18bc0c8e	111	// corrected from feed down of higher resonances
103ac317	112
18bc0c8e	113	Double_t sigmajpsi = 49.44e-6;
103ac317	114	Double_t sigmapsiP = 7.67e-6;
18bc0c8e	115	Double_t sigmaupsilon = 0.989e-6;
18bc0c8e	116	Double_t sigmaupsilonP = 0.502e-6;
103ac317	117	Double_t sigmaupsilonPP = 0.228e-6;
103ac317	118
18bc0c8e	119	// Generation using CDF scaled distribution for pp@14TeV (from D. Stocco)
18bc0c8e	120	//----------------------------------------------------------------------
103ac317	121	// Jpsi generator
18bc0c8e	122	AliGenParam * genjpsi = new AliGenParam(1, AliGenMUONlib::kJpsi, "CDF pp", "Jpsi");
103ac317	123	// first step: generation in 4pi
	124	genjpsi->SetPtRange(0.,100.);
	125	genjpsi->SetYRange(-8.,8.);
	126	genjpsi->SetPhiRange(0.,360.);
	127	genjpsi->SetForceDecay(kAll);
	128	genjpsi->Init(); // generation in 4pi
	129	ratiojpsi = sigmajpsi / sigmaReaction * genjpsi->GetRelativeArea(ptMin,ptMax,yMin,yMax,phiMin,phiMax); // get weight
	130	AliInfo(Form("jpsi prod. cross-section in pp(14 TeV) %5.3g b",sigmajpsi));
	131	AliInfo(Form("jpsi prod. probability per collision in acceptance %5.3g",ratiojpsi));
	132	// second step: generation in selected kinematical range
	133	genjpsi->SetPtRange(ptMin, ptMax);
	134	genjpsi->SetYRange(yMin, yMax);
	135	genjpsi->SetPhiRange(phiMin, phiMax);
	136	genjpsi->Init(); // generation in selected kinematic range
	137	AddGenerator(genjpsi, "Jpsi", ratiojpsi); // Adding Generator
	138	fTotalRate+=ratiojpsi;
	139
	140	//------------------------------------------------------------------
	141	// Psi prime generator
18bc0c8e	142	AliGenParam * genpsiP = new AliGenParam(1, AliGenMUONlib::kPsiP, "CDF pp", "PsiP");
103ac317	143	// first step: generation in 4pi
	144	genpsiP->SetPtRange(0.,100.);
	145	genpsiP->SetYRange(-8.,8.);
	146	genpsiP->SetPhiRange(0.,360.);
	147	genpsiP->SetForceDecay(kAll);
	148	genpsiP->Init(); // generation in 4pi
	149	ratiopsiP = sigmapsiP / sigmaReaction * genpsiP->GetRelativeArea(ptMin,ptMax,yMin,yMax,phiMin,phiMax);
	150	AliInfo(Form("psiP prod. cross-section in pp(14 TeV) %5.3g b",sigmapsiP));
	151	AliInfo(Form("psiP prod. probability per collision in acceptance %5.3g",ratiopsiP));
	152	// second step: generation in selected kinematical range
	153	genpsiP->SetPtRange(ptMin, ptMax);
	154	genpsiP->SetYRange(yMin, yMax);
	155	genpsiP->SetPhiRange(phiMin, phiMax);
	156	genpsiP->Init(); // generation in selected kinematic range
	157	AddGenerator(genpsiP, "PsiP", ratiopsiP); // Adding Generator
	158	fTotalRate+=ratiopsiP;
	159
	160	//------------------------------------------------------------------
	161	// Upsilon 1S generator
18bc0c8e	162	AliGenParam * genupsilon = new AliGenParam(1, AliGenMUONlib::kUpsilon, "CDF pp", "Upsilon");
103ac317	163	// first step: generation in 4pi
	164	genupsilon->SetPtRange(0.,100.);
	165	genupsilon->SetYRange(-8.,8.);
	166	genupsilon->SetPhiRange(0.,360.);
	167	genupsilon->SetForceDecay(kAll);
	168	genupsilon->Init(); // generation in 4pi
	169	ratioupsilon = sigmaupsilon / sigmaReaction * genupsilon->GetRelativeArea(ptMin,ptMax,yMin,yMax,phiMin,phiMax);
	170	AliInfo(Form("Upsilon 1S prod. cross-section in pp(14 TeV) %5.3g b",sigmaupsilon));
	171	AliInfo(Form("Upsilon 1S prod. probability per collision in acceptance %5.3g",ratioupsilon));
	172	// second step: generation in selected kinematical range
	173	genupsilon->SetPtRange(ptMin, ptMax);
	174	genupsilon->SetYRange(yMin, yMax);
	175	genupsilon->SetPhiRange(phiMin, phiMax);
	176	genupsilon->Init(); // generation in selected kinematical range
	177	AddGenerator(genupsilon,"Upsilon", ratioupsilon); // Adding Generator
	178	fTotalRate+=ratioupsilon;
	179
	180	//------------------------------------------------------------------
	181	// Upsilon 2S generator
18bc0c8e	182	AliGenParam * genupsilonP = new AliGenParam(1, AliGenMUONlib::kUpsilonP, "CDF pp", "UpsilonP");
103ac317	183	// first step: generation in 4pi
	184	genupsilonP->SetPtRange(0.,100.);
	185	genupsilonP->SetYRange(-8.,8.);
	186	genupsilonP->SetPhiRange(0.,360.);
	187	genupsilonP->SetForceDecay(kAll);
	188	genupsilonP->Init(); // generation in 4pi
	189	ratioupsilonP = sigmaupsilonP / sigmaReaction * genupsilonP->GetRelativeArea(ptMin,ptMax,yMin,yMax,phiMin,phiMax);
	190	AliInfo(Form("Upsilon 2S prod. cross-section in pp(14 TeV) %5.3g b",sigmaupsilonP));
	191	AliInfo(Form("Upsilon 2S prod. probability per collision in acceptance %5.3g",ratioupsilonP));
	192	// second step: generation in the kinematical range
	193	genupsilonP->SetPtRange(ptMin, ptMax);
	194	genupsilonP->SetYRange(yMin, yMax);
	195	genupsilonP->SetPhiRange(phiMin, phiMax);
	196	genupsilonP->Init(); // generation in selected kinematical range
	197	AddGenerator(genupsilonP,"UpsilonP", ratioupsilonP); // Adding Generator
	198	fTotalRate+=ratioupsilonP;
	199
	200	//------------------------------------------------------------------
	201	// Upsilon 3S generator
18bc0c8e	202	AliGenParam * genupsilonPP = new AliGenParam(1, AliGenMUONlib::kUpsilonPP, "CDF pp", "UpsilonPP");
103ac317	203	// first step: generation in 4pi
	204	genupsilonPP->SetPtRange(0.,100.);
	205	genupsilonPP->SetYRange(-8.,8.);
	206	genupsilonPP->SetPhiRange(0.,360.);
	207	genupsilonPP->SetForceDecay(kAll);
	208	genupsilonPP->Init(); // generation in 4pi
	209	ratioupsilonPP = sigmaupsilonPP / sigmaReaction * genupsilonPP->GetRelativeArea(ptMin,ptMax,yMin,yMax,phiMin,phiMax);
	210	AliInfo(Form("Upsilon 3S prod. cross-section in pp(14 TeV) %5.3g b",sigmaupsilonPP));
	211	AliInfo(Form("Upsilon 3S prod. probability per collision in acceptance %5.3g",ratioupsilonPP));
	212	// second step: generation in selected kinematical range
	213	genupsilonPP->SetPtRange(ptMin, ptMax);
	214	genupsilonPP->SetYRange(yMin, yMax);
	215	genupsilonPP->SetPhiRange(phiMin, phiMax);
	216	genupsilonPP->Init(); // generation in selected kinematical range
	217	AddGenerator(genupsilonPP,"UpsilonPP", ratioupsilonPP); // Adding Generator
	218	fTotalRate+=ratioupsilonPP;
	219
	220	//------------------------------------------------------------------
	221	// Pythia generator
	222	AliGenPythia *pythia = new AliGenPythia(1);
	223	pythia->SetProcess(kPyMbMSEL1);
	224	pythia->SetStrucFunc(kCTEQ5L);
	225	pythia->SetEnergyCMS(14000.);
	226	pythia->SetForceDecay(kAll);
	227	pythia->SetPtRange(0.,100.);
	228	pythia->SetYRange(-8.,8.);
	229	pythia->SetPhiRange(0.,360.);
f58d19bb	230	pythia->SetPtHard(2.76,-1.0);
103ac317	231	pythia->Init();
	232	AddGenerator(pythia,"Pythia",1);
	233	fTotalRate+=1.;
	234
	235	}
	236
	237	//_________________________________________________________________________
	238	void AliGenMUONCocktailpp::Generate()
	239	{
	240	// Generate event
	241	TIter next(fEntries);
	242	AliGenCocktailEntry *entry = 0;
	243	AliGenCocktailEntry *preventry = 0;
	244	AliGenerator* gen = 0;
	245
	246	TObjArray *partArray = gAlice->GetMCApp()->Particles();
	247
	248	// Generate the vertex position used by all generators
	249	if(fVertexSmear == kPerEvent) Vertex();
	250
	251	// Loop on primordialTrigger:
	252	// minimum muon multiplicity above a pt cut in a theta acceptance region
	253
	254	Bool_t primordialTrigger = kFALSE;
	255	while(!primordialTrigger) {
	256	//Reseting stack
	257	AliRunLoader * runloader = gAlice->GetRunLoader();
	258	if (runloader)
	259	if (runloader->Stack())
	260	runloader->Stack()->Reset();
	261	// Loop over generators and generate events
	262	Int_t igen = 0;
	263	Int_t npart = 0;
	264	const char* genName = 0;
	265	while((entry = (AliGenCocktailEntry*)next())) {
	266	gen = entry->Generator();
	267	genName = entry->GetName();
	268	gen->SetVertex(fVertex.At(0), fVertex.At(1), fVertex.At(2));
	269
	270	npart = (strcmp(genName,"Pythia") == 0) ? 1 :
	271	gRandom->Poisson(entry->Rate());
	272
	273	if (npart > 0) {
	274	igen++;
	275	if (igen == 1) entry->SetFirst(0);
	276	else entry->SetFirst((partArray->GetEntriesFast())+1);
	277
	278	gen->SetNumberParticles(npart);
	279	gen->Generate();
	280	entry->SetLast(partArray->GetEntriesFast());
	281	preventry = entry;
	282	}
	283	}
	284	next.Reset();
	285
	286	// Testing primordial trigger: Single muons or dimuons with Pt above a Pt cut
	287	// in the muon spectrometer acceptance
	288	Int_t iPart;
	289	fNGenerated++;
	290	Int_t numberOfMuons=0;
	291
	292	for(iPart=0; iPart<partArray->GetEntriesFast(); iPart++){
	293
	294	if ( (TMath::Abs(gAlice->GetMCApp()->Particle(iPart)->GetPdgCode())==13) &&
295	(gAlice->GetMCApp()->Particle(iPart)->Theta()*180./TMath::Pi()>fMuonThetaMinCut) &&
296	(gAlice->GetMCApp()->Particle(iPart)->Theta()*180./TMath::Pi()<fMuonThetaMaxCut) &&
297	(gAlice->GetMCApp()->Particle(iPart)->Pt()>fMuonPtCut) ) {
298
299	numberOfMuons++;
300	}
301	}
302
303	if (numberOfMuons >= fMuonMultiplicity) primordialTrigger = kTRUE;
304	}
305	fNSucceded++;
306
307	AliInfo(Form("Generated Events are %d and Succeeded Events are %d",fNGenerated,fNSucceded));
308	AliDebug(5,Form("Generated Events are %d and Succeeded Events are %d",fNGenerated,fNSucceded));
309	}
310
311