* provided "as is" without express or implied warranty. *
**************************************************************************/
-/*
-$Log$
-Revision 1.5 2003/04/04 08:12:56 morsch
-Boost for assymmetric systems added.
-
-Revision 1.4 2003/04/01 20:39:00 morsch
-Pycell configurable.
-
-Revision 1.3 2003/03/31 15:47:16 morsch
-Unhandled cases added.
-
-Revision 1.2 2003/03/27 09:28:38 morsch
-Charm production process configuration for pPb and pp added
-(A. Dainese, N. Carrer)
-
-Revision 1.1 2003/03/15 15:00:48 morsch
-Classed imported from EVGEN.
-
-Revision 1.69 2003/01/14 10:50:19 alibrary
-Cleanup of STEER coding conventions
-
-Revision 1.68 2002/12/11 09:16:16 morsch
-Use GetJets to fill header.
-
-Revision 1.67 2002/12/09 15:24:09 morsch
-Same trigger routine can use Pycell or Pyclus.
-
-Revision 1.66 2002/12/09 08:22:56 morsch
-UA1 jet finder (Pycell) for software triggering added.
-
-Revision 1.65 2002/11/19 08:57:10 morsch
-Configuration of pt-kick added.
-
-Revision 1.64 2002/11/15 00:43:06 morsch
-Changes for kPyJets
-- initial and final state g-radiation + pt-kick default
-- trigger based on parton clusters (using pyclus)
-- trigger jets are stored in header.
-
-Revision 1.63 2002/10/14 14:55:35 hristov
-Merging the VirtualMC branch to the main development branch (HEAD)
-
-Revision 1.52.4.4 2002/10/10 16:40:08 hristov
-Updating VirtualMC to v3-09-02
-
-Revision 1.62 2002/09/24 10:00:01 morsch
-CheckTrigger() corrected.
-
-Revision 1.61 2002/07/30 09:52:38 morsch
-Call SetGammaPhiRange() and SetGammaEtaRange() in the constructor.
-
-Revision 1.60 2002/07/19 14:49:03 morsch
-Typo corrected.
-
-Revision 1.59 2002/07/19 14:35:36 morsch
-Count total number of trials. Print mean Q, x1, x2.
-
-Revision 1.58 2002/07/17 10:04:09 morsch
-SetYHard method added.
-
-Revision 1.57 2002/05/22 13:22:53 morsch
-Process kPyMbNonDiffr added.
-
-Revision 1.56 2002/04/26 10:30:01 morsch
-Option kPyBeautyPbMNR added. (N. Carrer).
-
-Revision 1.55 2002/04/17 10:23:56 morsch
-Coding Rule violations corrected.
-
-Revision 1.54 2002/03/28 11:49:10 morsch
-Pass status code in SetTrack.
-
-Revision 1.53 2002/03/25 14:51:13 morsch
-New stack-fill and count options introduced (N. Carrer).
-
-Revision 1.51 2002/03/06 08:46:57 morsch
-- Loop until np-1
-- delete dyn. alloc. arrays (N. Carrer)
-
-Revision 1.50 2002/03/03 13:48:50 morsch
-Option kPyCharmPbMNR added. Produce charm pairs in agreement with MNR
-NLO calculations (Nicola Carrer).
-
-Revision 1.49 2002/02/08 16:50:50 morsch
-Add name and title in constructor.
-
-Revision 1.48 2001/12/20 11:44:28 morsch
-Add kinematic bias for direct gamma production.
-
-Revision 1.47 2001/12/19 14:45:00 morsch
-Store number of trials in header.
-
-Revision 1.46 2001/12/19 10:36:19 morsch
-Add possibility if jet kinematic biasing.
-
-Revision 1.45 2001/11/28 08:06:52 morsch
-Use fMaxLifeTime parameter.
-
-Revision 1.44 2001/11/27 13:13:07 morsch
-Maximum lifetime for long-lived particles to be put on the stack is parameter.
-It can be set via SetMaximumLifetime(..).
-
-Revision 1.43 2001/10/21 18:35:56 hristov
-Several pointers were set to zero in the default constructors to avoid memory management problems
-
-Revision 1.42 2001/10/15 08:21:55 morsch
-Vertex truncation settings moved to AliGenMC.
-
-Revision 1.41 2001/10/08 08:45:42 morsch
-Possibility of vertex cut added.
-
-Revision 1.40 2001/09/25 11:30:23 morsch
-Pass event vertex to header.
-
-Revision 1.39 2001/07/27 17:09:36 morsch
-Use local SetTrack, KeepTrack and SetHighWaterMark methods
-to delegate either to local stack or to stack owned by AliRun.
-(Piotr Skowronski, A.M.)
-
-Revision 1.38 2001/07/13 10:58:54 morsch
-- Some coded moved to AliGenMC
-- Improved handling of secondary vertices.
-
-Revision 1.37 2001/06/28 11:17:28 morsch
-SetEventListRange setter added. Events in specified range are listed for
-debugging. (Yuri Kharlov)
-
-Revision 1.36 2001/03/30 07:05:49 morsch
-Final print-out in finish run.
-Write parton system for jet-production (preliminary solution).
-
-Revision 1.35 2001/03/09 13:03:40 morsch
-Process_t and Struc_Func_t moved to AliPythia.h
-
-Revision 1.34 2001/02/14 15:50:40 hristov
-The last particle in event marked using SetHighWaterMark
-
-Revision 1.33 2001/01/30 09:23:12 hristov
-Streamers removed (R.Brun)
-
-Revision 1.32 2001/01/26 19:55:51 hristov
-Major upgrade of AliRoot code
-
-Revision 1.31 2001/01/17 10:54:31 hristov
-Better protection against FPE
-
-Revision 1.30 2000/12/18 08:55:35 morsch
-Make AliPythia dependent generartors work with new scheme of random number generation
-
-Revision 1.29 2000/12/04 11:22:03 morsch
-Init of sRandom as in 1.15
-
-Revision 1.28 2000/12/02 11:41:39 morsch
-Use SetRandom() to initialize random number generator in constructor.
-
-Revision 1.27 2000/11/30 20:29:02 morsch
-Initialise static variable sRandom in constructor: sRandom = fRandom;
-
-Revision 1.26 2000/11/30 07:12:50 alibrary
-Introducing new Rndm and QA classes
-
-Revision 1.25 2000/10/18 19:11:27 hristov
-Division by zero fixed
-
-Revision 1.24 2000/09/18 10:41:35 morsch
-Add possibility to use nuclear structure functions from PDF library V8.
-
-Revision 1.23 2000/09/14 14:05:40 morsch
-dito
-
-Revision 1.22 2000/09/14 14:02:22 morsch
-- Correct conversion from mm to cm when passing particle vertex to MC.
-- Correct handling of fForceDecay == all.
-
-Revision 1.21 2000/09/12 14:14:55 morsch
-Call fDecayer->ForceDecay() at the beginning of Generate().
-
-Revision 1.20 2000/09/06 14:29:33 morsch
-Use AliPythia for event generation an AliDecayPythia for decays.
-Correct handling of "nodecay" option
-
-Revision 1.19 2000/07/11 18:24:56 fca
-Coding convention corrections + few minor bug fixes
-
-Revision 1.18 2000/06/30 12:40:34 morsch
-Pythia takes care of vertex smearing. Correct conversion from Pythia units (mm) to
-Geant units (cm).
-
-Revision 1.17 2000/06/09 20:34:07 morsch
-All coding rule violations except RS3 corrected
-
-Revision 1.16 2000/05/15 15:04:20 morsch
-The full event is written for fNtrack = -1
-Coding rule violations corrected.
-
-Revision 1.15 2000/04/26 10:14:24 morsch
-Particles array has one entry more than pythia particle list. Upper bound of
-particle loop changed to np-1 (R. Guernane, AM)
-
-Revision 1.14 2000/04/05 08:36:13 morsch
-Check status code of particles in Pythia event
-to avoid double counting as partonic state and final state particle.
-
-Revision 1.13 1999/11/09 07:38:48 fca
-Changes for compatibility with version 2.23 of ROOT
-
-Revision 1.12 1999/11/03 17:43:20 fca
-New version from G.Martinez & A.Morsch
-
-Revision 1.11 1999/09/29 09:24:14 fca
-Introduction of the Copyright and cvs Log
-*/
+/* $Id$ */
//
// Generator using the TPythia interface (via AliPythia)
#include <TPDGCode.h>
#include <TSystem.h>
#include <TTree.h>
-
#include "AliConst.h"
#include "AliDecayerPythia.h"
#include "AliGenPythia.h"
+#include "AliHeader.h"
#include "AliGenPythiaEventHeader.h"
#include "AliPythia.h"
+#include "AliPythiaRndm.h"
#include "AliRun.h"
-
- ClassImp(AliGenPythia)
-
-AliGenPythia::AliGenPythia()
- :AliGenMC()
+#include "AliStack.h"
+#include "AliRunLoader.h"
+#include "AliMC.h"
+#include "pyquenCommon.h"
+
+ClassImp(AliGenPythia)
+
+
+AliGenPythia::AliGenPythia():
+ AliGenMC(),
+ fProcess(kPyCharm),
+ fStrucFunc(kCTEQ5L),
+ fEnergyCMS(5500.),
+ fKineBias(0.),
+ fTrials(0),
+ fTrialsRun(0),
+ fQ(0.),
+ fX1(0.),
+ fX2(0.),
+ fEventTime(0.),
+ fInteractionRate(0.),
+ fTimeWindow(0.),
+ fCurSubEvent(0),
+ fEventsTime(0),
+ fNev(0),
+ fFlavorSelect(0),
+ fXsection(0.),
+ fPythia(0),
+ fPtHardMin(0.),
+ fPtHardMax(1.e4),
+ fYHardMin(-1.e10),
+ fYHardMax(1.e10),
+ fGinit(1),
+ fGfinal(1),
+ fHadronisation(1),
+ fNpartons(0),
+ fReadFromFile(0),
+ fQuench(0),
+ fPtKick(1.),
+ fFullEvent(kTRUE),
+ fDecayer(new AliDecayerPythia()),
+ fDebugEventFirst(-1),
+ fDebugEventLast(-1),
+ fEtMinJet(0.),
+ fEtMaxJet(1.e4),
+ fEtaMinJet(-20.),
+ fEtaMaxJet(20.),
+ fPhiMinJet(0.),
+ fPhiMaxJet(2.* TMath::Pi()),
+ fJetReconstruction(kCell),
+ fEtaMinGamma(-20.),
+ fEtaMaxGamma(20.),
+ fPhiMinGamma(0.),
+ fPhiMaxGamma(2. * TMath::Pi()),
+ fPycellEtaMax(2.),
+ fPycellNEta(274),
+ fPycellNPhi(432),
+ fPycellThreshold(0.),
+ fPycellEtSeed(4.),
+ fPycellMinEtJet(10.),
+ fPycellMaxRadius(1.),
+ fStackFillOpt(kFlavorSelection),
+ fFeedDownOpt(kTRUE),
+ fFragmentation(kTRUE),
+ fSetNuclei(kFALSE),
+ fNewMIS(kFALSE),
+ fHFoff(kFALSE),
+ fTriggerParticle(0),
+ fTriggerEta(0.9),
+ fCountMode(kCountAll),
+ fHeader(0),
+ fRL(0),
+ fFileName(0)
{
// Default Constructor
- fParticles = 0;
- fPythia = 0;
- fDecayer = new AliDecayerPythia();
- SetEventListRange();
- SetJetPhiRange();
- SetJetEtaRange();
- SetJetEtRange();
- SetGammaPhiRange();
- SetGammaEtaRange();
- SetPtKick();
- fSetNuclei = kFALSE;
+ SetNuclei(0,0);
+ if (!AliPythiaRndm::GetPythiaRandom())
+ AliPythiaRndm::SetPythiaRandom(GetRandom());
}
AliGenPythia::AliGenPythia(Int_t npart)
- :AliGenMC(npart)
+ :AliGenMC(npart),
+ fProcess(kPyCharm),
+ fStrucFunc(kCTEQ5L),
+ fEnergyCMS(5500.),
+ fKineBias(0.),
+ fTrials(0),
+ fTrialsRun(0),
+ fQ(0.),
+ fX1(0.),
+ fX2(0.),
+ fEventTime(0.),
+ fInteractionRate(0.),
+ fTimeWindow(0.),
+ fCurSubEvent(0),
+ fEventsTime(0),
+ fNev(0),
+ fFlavorSelect(0),
+ fXsection(0.),
+ fPythia(0),
+ fPtHardMin(0.),
+ fPtHardMax(1.e4),
+ fYHardMin(-1.e10),
+ fYHardMax(1.e10),
+ fGinit(kTRUE),
+ fGfinal(kTRUE),
+ fHadronisation(kTRUE),
+ fNpartons(0),
+ fReadFromFile(kFALSE),
+ fQuench(kFALSE),
+ fPtKick(1.),
+ fFullEvent(kTRUE),
+ fDecayer(new AliDecayerPythia()),
+ fDebugEventFirst(-1),
+ fDebugEventLast(-1),
+ fEtMinJet(0.),
+ fEtMaxJet(1.e4),
+ fEtaMinJet(-20.),
+ fEtaMaxJet(20.),
+ fPhiMinJet(0.),
+ fPhiMaxJet(2.* TMath::Pi()),
+ fJetReconstruction(kCell),
+ fEtaMinGamma(-20.),
+ fEtaMaxGamma(20.),
+ fPhiMinGamma(0.),
+ fPhiMaxGamma(2. * TMath::Pi()),
+ fPycellEtaMax(2.),
+ fPycellNEta(274),
+ fPycellNPhi(432),
+ fPycellThreshold(0.),
+ fPycellEtSeed(4.),
+ fPycellMinEtJet(10.),
+ fPycellMaxRadius(1.),
+ fStackFillOpt(kFlavorSelection),
+ fFeedDownOpt(kTRUE),
+ fFragmentation(kTRUE),
+ fSetNuclei(kFALSE),
+ fNewMIS(kFALSE),
+ fHFoff(kFALSE),
+ fTriggerParticle(0),
+ fTriggerEta(0.9),
+ fCountMode(kCountAll),
+ fHeader(0),
+ fRL(0),
+ fFileName(0)
{
// default charm production at 5. 5 TeV
// semimuonic decay
//
fName = "Pythia";
fTitle= "Particle Generator using PYTHIA";
- fXsection = 0.;
- SetProcess();
- SetStrucFunc();
SetForceDecay();
- SetPtHard();
- SetYHard();
- SetEnergyCMS();
- fDecayer = new AliDecayerPythia();
// Set random number generator
- sRandom=fRandom;
- fFlavorSelect = 0;
- // Produced particles
+ if (!AliPythiaRndm::GetPythiaRandom())
+ AliPythiaRndm::SetPythiaRandom(GetRandom());
fParticles = new TClonesArray("TParticle",1000);
- fEventVertex.Set(3);
- SetEventListRange();
- SetJetPhiRange();
- SetJetEtaRange();
- SetJetEtRange();
- SetGammaPhiRange();
- SetGammaEtaRange();
- SetJetReconstructionMode();
- SetPtKick();
- // Options determining what to keep in the stack (Heavy flavour generation)
- fStackFillOpt = kFlavorSelection; // Keep particle with selected flavor
- fFeedDownOpt = kTRUE; // allow feed down from higher family
- // Fragmentation on/off
- fFragmentation = kTRUE;
- // Default counting mode
- fCountMode = kCountAll;
- // Pycel
- SetPycellParameters();
- fSetNuclei = kFALSE;
-}
+ SetNuclei(0,0);
+ }
AliGenPythia::AliGenPythia(const AliGenPythia & Pythia)
+ :AliGenMC(Pythia),
+ fProcess(kPyCharm),
+ fStrucFunc(kCTEQ5L),
+ fEnergyCMS(5500.),
+ fKineBias(0.),
+ fTrials(0),
+ fTrialsRun(0),
+ fQ(0.),
+ fX1(0.),
+ fX2(0.),
+ fEventTime(0.),
+ fInteractionRate(0.),
+ fTimeWindow(0.),
+ fCurSubEvent(0),
+ fEventsTime(0),
+ fNev(0),
+ fFlavorSelect(0),
+ fXsection(0.),
+ fPythia(0),
+ fPtHardMin(0.),
+ fPtHardMax(1.e4),
+ fYHardMin(-1.e10),
+ fYHardMax(1.e10),
+ fGinit(kTRUE),
+ fGfinal(kTRUE),
+ fHadronisation(kTRUE),
+ fNpartons(0),
+ fReadFromFile(kFALSE),
+ fQuench(kFALSE),
+ fPtKick(1.),
+ fFullEvent(kTRUE),
+ fDecayer(new AliDecayerPythia()),
+ fDebugEventFirst(-1),
+ fDebugEventLast(-1),
+ fEtMinJet(0.),
+ fEtMaxJet(1.e4),
+ fEtaMinJet(-20.),
+ fEtaMaxJet(20.),
+ fPhiMinJet(0.),
+ fPhiMaxJet(2.* TMath::Pi()),
+ fJetReconstruction(kCell),
+ fEtaMinGamma(-20.),
+ fEtaMaxGamma(20.),
+ fPhiMinGamma(0.),
+ fPhiMaxGamma(2. * TMath::Pi()),
+ fPycellEtaMax(2.),
+ fPycellNEta(274),
+ fPycellNPhi(432),
+ fPycellThreshold(0.),
+ fPycellEtSeed(4.),
+ fPycellMinEtJet(10.),
+ fPycellMaxRadius(1.),
+ fStackFillOpt(kFlavorSelection),
+ fFeedDownOpt(kTRUE),
+ fFragmentation(kTRUE),
+ fSetNuclei(kFALSE),
+ fNewMIS(kFALSE),
+ fHFoff(kFALSE),
+ fTriggerParticle(0),
+ fTriggerEta(0.9),
+ fCountMode(kCountAll),
+ fHeader(0),
+ fRL(0),
+ fFileName(0)
{
// copy constructor
Pythia.Copy(*this);
AliGenPythia::~AliGenPythia()
{
// Destructor
+ if(fEventsTime) delete fEventsTime;
+}
+
+void AliGenPythia::SetInteractionRate(Float_t rate,Float_t timewindow)
+{
+// Generate pileup using user specified rate
+ fInteractionRate = rate;
+ fTimeWindow = timewindow;
+ GeneratePileup();
+}
+
+void AliGenPythia::GeneratePileup()
+{
+// Generate sub events time for pileup
+ fEventsTime = 0;
+ if(fInteractionRate == 0.) {
+ Warning("GeneratePileup","Zero interaction specified. Skipping pileup generation.\n");
+ return;
+ }
+
+ Int_t npart = NumberParticles();
+ if(npart < 0) {
+ Warning("GeneratePileup","Negative number of particles. Skipping pileup generation.\n");
+ return;
+ }
+
+ if(fEventsTime) delete fEventsTime;
+ fEventsTime = new TArrayF(npart);
+ TArrayF &array = *fEventsTime;
+ for(Int_t ipart = 0; ipart < npart; ipart++)
+ array[ipart] = 0.;
+
+ Float_t eventtime = 0.;
+ while(1)
+ {
+ eventtime += (AliPythiaRndm::GetPythiaRandom())->Exp(1./fInteractionRate);
+ if(eventtime > fTimeWindow) break;
+ array.Set(array.GetSize()+1);
+ array[array.GetSize()-1] = eventtime;
+ }
+
+ eventtime = 0.;
+ while(1)
+ {
+ eventtime -= (AliPythiaRndm::GetPythiaRandom())->Exp(1./fInteractionRate);
+ if(TMath::Abs(eventtime) > fTimeWindow) break;
+ array.Set(array.GetSize()+1);
+ array[array.GetSize()-1] = eventtime;
+ }
+
+ SetNumberParticles(fEventsTime->GetSize());
}
void AliGenPythia::SetPycellParameters(Float_t etamax, Int_t neta, Int_t nphi,
// Initialisation
SetMC(AliPythia::Instance());
- fPythia=(AliPythia*) fgMCEvGen;
+ fPythia=(AliPythia*) fMCEvGen;
+
//
fParentWeight=1./Float_t(fNpart);
//
fPythia->SetMSTP(91,0);
}
- // fPythia->SetMSTJ(1,2);
+
+ if (fReadFromFile) {
+ fRL = AliRunLoader::Open(fFileName, "Partons");
+ fRL->LoadKinematics();
+ fRL->LoadHeader();
+ } else {
+ fRL = 0x0;
+ }
+// Switch off Heavy Flavors on request
+ if (fHFoff) {
+ fPythia->SetMSTP(58, 3);
+ fPythia->SetMSTJ(45, 3);
+ for (Int_t i = 156; i <= 160; i++) fPythia->SetMDME(i, 1, 0);
+ }
//
fPythia->ProcInit(fProcess,fEnergyCMS,fStrucFunc);
// Parent and Children Selection
switch (fProcess)
{
+ case kPyOldUEQ2ordered:
+ case kPyOldUEQ2ordered2:
+ case kPyOldPopcorn:
+ break;
case kPyCharm:
case kPyCharmUnforced:
case kPyCharmPbPbMNR:
- case kPyCharmppMNR:
case kPyCharmpPbMNR:
+ case kPyCharmppMNR:
+ case kPyCharmppMNRwmi:
fParentSelect[0] = 411;
fParentSelect[1] = 421;
fParentSelect[2] = 431;
fParentSelect[0] = 421;
fFlavorSelect = 4;
break;
+ case kPyDPlusPbPbMNR:
+ case kPyDPluspPbMNR:
+ case kPyDPlusppMNR:
+ fParentSelect[0] = 411;
+ fFlavorSelect = 4;
+ break;
+ case kPyDPlusStrangePbPbMNR:
+ case kPyDPlusStrangepPbMNR:
+ case kPyDPlusStrangeppMNR:
+ fParentSelect[0] = 431;
+ fFlavorSelect = 4;
+ break;
case kPyBeauty:
case kPyBeautyPbPbMNR:
case kPyBeautypPbMNR:
case kPyBeautyppMNR:
+ case kPyBeautyppMNRwmi:
fParentSelect[0]= 511;
fParentSelect[1]= 521;
fParentSelect[2]= 531;
break;
case kPyMb:
case kPyMbNonDiffr:
+ case kPyMbMSEL1:
case kPyJets:
case kPyDirectGamma:
+ case kPyLhwgMb:
break;
+ case kPyW:
+ case kPyZ:
+ break;
}
//
//
//
// Configure detector (EMCAL like)
//
- fPythia->SetPARU(51, fPycellEtaMax);
- fPythia->SetMSTU(51, fPycellNEta);
- fPythia->SetMSTU(52, fPycellNPhi);
+ fPythia->SetPARU(51, fPycellEtaMax);
+ fPythia->SetMSTU(51, fPycellNEta);
+ fPythia->SetMSTU(52, fPycellNPhi);
//
// Configure Jet Finder
//
- fPythia->SetPARU(58, fPycellThreshold);
- fPythia->SetPARU(52, fPycellEtSeed);
- fPythia->SetPARU(53, fPycellMinEtJet);
- fPythia->SetPARU(54, fPycellMaxRadius);
- fPythia->SetMSTU(54, 2);
+ fPythia->SetPARU(58, fPycellThreshold);
+ fPythia->SetPARU(52, fPycellEtSeed);
+ fPythia->SetPARU(53, fPycellMinEtJet);
+ fPythia->SetPARU(54, fPycellMaxRadius);
+ fPythia->SetMSTU(54, 2);
//
// This counts the total number of calls to Pyevnt() per run.
fTrialsRun = 0;
fDyBoost = 0;
Warning("Init","SetNuclei used. Use SetProjectile + SetTarget instead. fDyBoost has been reset to 0\n");
}
+
+ if (fQuench) {
+ fPythia->InitQuenching(0., 0.1, 0.6e6, 0);
+ }
+ fPythia->SetPARJ(200, 0.0);
+
+ if (fQuench == 3) {
+ // Nestor's change of the splittings
+ fPythia->SetPARJ(200, 0.8);
+ fPythia->SetMSTJ(41, 1); // QCD radiation only
+ fPythia->SetMSTJ(42, 2); // angular ordering
+ fPythia->SetMSTJ(44, 2); // option to run alpha_s
+ fPythia->SetMSTJ(47, 0); // No correction back to hard scattering element
+ fPythia->SetMSTJ(50, 0); // No coherence in first branching
+ fPythia->SetPARJ(82, 1.); // Cut off for parton showers
+ }
}
void AliGenPythia::Generate()
{
// Generate one event
+
fDecayer->ForceDecay();
Float_t polar[3] = {0,0,0};
Float_t origin[3] = {0,0,0};
- Float_t p[3];
+ Float_t p[4];
// converts from mm/c to s
const Float_t kconv=0.001/2.999792458e8;
//
Int_t jev=0;
Int_t j, kf;
fTrials=0;
+ fEventTime = 0.;
+
+
// Set collision vertex position
- if(fVertexSmear==kPerEvent) {
- fPythia->SetMSTP(151,1);
- for (j=0;j<3;j++) {
- fPythia->SetPARP(151+j, fOsigma[j]*10.);
- }
- } else if (fVertexSmear==kPerTrack) {
- fPythia->SetMSTP(151,0);
- }
+ if (fVertexSmear == kPerEvent) Vertex();
+
// event loop
while(1)
{
- fPythia->Pyevnt();
- if (gAlice->GetEvNumber()>=fDebugEventFirst &&
- gAlice->GetEvNumber()<=fDebugEventLast) fPythia->Pylist(1);
- fTrials++;
+//
+// Produce event
+//
+//
+// Switch hadronisation off
+//
+ fPythia->SetMSTJ(1, 0);
+//
+// Either produce new event or read partons from file
+//
+ if (!fReadFromFile) {
+ if (!fNewMIS) {
+ fPythia->Pyevnt();
+ } else {
+ fPythia->Pyevnw();
+ }
+ fNpartons = fPythia->GetN();
+ } else {
+ printf("Loading Event %d\n",AliRunLoader::GetRunLoader()->GetEventNumber());
+ fRL->GetEvent(AliRunLoader::GetRunLoader()->GetEventNumber());
+ fPythia->SetN(0);
+ LoadEvent(fRL->Stack(), 0 , 1);
+ fPythia->Pyedit(21);
+ }
+//
+// Run quenching routine
+//
+ if (fQuench == 1) {
+ fPythia->Quench();
+ } else if (fQuench == 2){
+ fPythia->Pyquen(208., 0, 0.);
+ } else if (fQuench == 3) {
+ // Quenching is via multiplicative correction of the splittings
+ }
+
+//
+// Switch hadronisation on
+//
+ fPythia->SetMSTJ(1, 1);
+//
+// .. and perform hadronisation
+// printf("Calling hadronisation %d\n", fPythia->GetN());
+ fPythia->Pyexec();
+ fTrials++;
fPythia->ImportParticles(fParticles,"All");
-
Boost();
//
//
//
Int_t i;
+
Int_t np = fParticles->GetEntriesFast();
- if (np == 0 ) continue;
-// Get event vertex and discard the event if the Z coord. is too big
- TParticle *iparticle = (TParticle *) fParticles->At(0);
- Float_t distz = iparticle->Vz()/10.;
- if(TMath::Abs(distz)>fCutVertexZ*fOsigma[2]) continue;
+
+ if (np == 0) continue;
//
- fEventVertex[0] = iparticle->Vx()/10.+fOrigin.At(0);
- fEventVertex[1] = iparticle->Vy()/10.+fOrigin.At(1);
- fEventVertex[2] = iparticle->Vz()/10.+fOrigin.At(2);
+
//
Int_t* pParent = new Int_t[np];
Int_t* pSelected = new Int_t[np];
Int_t* trackIt = new Int_t[np];
- for (i=0; i< np; i++) {
+ for (i = 0; i < np; i++) {
pParent[i] = -1;
pSelected[i] = 0;
trackIt[i] = 0;
Int_t nTkbles = 0; // Trackable particles
if (fProcess != kPyMb && fProcess != kPyJets &&
fProcess != kPyDirectGamma &&
- fProcess != kPyMbNonDiffr) {
+ fProcess != kPyMbNonDiffr &&
+ fProcess != kPyMbMSEL1 &&
+ fProcess != kPyW && fProcess != kPyZ &&
+ fProcess != kPyCharmppMNRwmi && fProcess != kPyBeautyppMNRwmi) {
- for (i = 0; i<np; i++) {
- iparticle = (TParticle *) fParticles->At(i);
+ for (i = 0; i < np; i++) {
+ TParticle* iparticle = (TParticle *) fParticles->At(i);
Int_t ks = iparticle->GetStatusCode();
kf = CheckPDGCode(iparticle->GetPdgCode());
// No initial state partons
// quark ?
kf = TMath::Abs(kf);
Int_t kfl = kf;
+ // Resonance
+
+ if (kfl > 100000) kfl %= 100000;
+ if (kfl > 10000) kfl %= 10000;
// meson ?
if (kfl > 10) kfl/=100;
// baryon
if (kfl > 10) kfl/=10;
- if (kfl > 10) kfl/=10;
-
Int_t ipa = iparticle->GetFirstMother()-1;
Int_t kfMo = 0;
+//
+// Establish mother daughter relation between heavy quarks and mesons
+//
+ if (kf >= fFlavorSelect && kf <= 6) {
+ Int_t idau = iparticle->GetFirstDaughter() - 1;
+ if (idau > -1) {
+ TParticle* daughter = (TParticle *) fParticles->At(idau);
+ Int_t pdgD = daughter->GetPdgCode();
+ if (pdgD == 91 || pdgD == 92) {
+ Int_t jmin = daughter->GetFirstDaughter() - 1;
+ Int_t jmax = daughter->GetLastDaughter() - 1;
+ for (Int_t j = jmin; j <= jmax; j++)
+ ((TParticle *) fParticles->At(j))->SetFirstMother(i+1);
+ } // is string or cluster
+ } // has daughter
+ } // heavy quark
+
if (ipa > -1) {
TParticle * mother = (TParticle *) fParticles->At(ipa);
kfMo = TMath::Abs(mother->GetPdgCode());
}
+
// What to keep in Stack?
Bool_t flavorOK = kFALSE;
Bool_t selectOK = kFALSE;
if (fFeedDownOpt) {
- if (kfl >= fFlavorSelect) flavorOK = kTRUE;
+ if (kfl >= fFlavorSelect) flavorOK = kTRUE;
} else {
- if (kfl > fFlavorSelect) {
- nc = -1;
- break;
- }
- if (kfl == fFlavorSelect) flavorOK = kTRUE;
+ if (kfl > fFlavorSelect) {
+ nc = -1;
+ break;
+ }
+ if (kfl == fFlavorSelect) flavorOK = kTRUE;
}
switch (fStackFillOpt) {
case kFlavorSelection:
- selectOK = kTRUE;
- break;
+ selectOK = kTRUE;
+ break;
case kParentSelection:
- if (ParentSelected(kf) || kf <= 10) selectOK = kTRUE;
- break;
+ if (ParentSelected(kf) || kf <= 10) selectOK = kTRUE;
+ break;
}
if (flavorOK && selectOK) {
//
// Kinematic seletion on final state heavy flavor mesons
if (ParentSelected(kf) && !KinematicSelection(iparticle, 0))
{
- continue;
+ continue;
}
pSelected[i] = 1;
if (ParentSelected(kf)) ++nParents; // Update parent count
} else {
// Kinematic seletion on decay products
if (fCutOnChild && ParentSelected(kfMo) && ChildSelected(kf)
- && !KinematicSelection(iparticle, 1))
+ && !KinematicSelection(iparticle, 1))
{
- continue;
+ continue;
}
//
// Decay products
if (!pSelected[i]) continue;
// Count quarks only if you did not include fragmentation
if (fFragmentation && kf <= 10) continue;
+
nc++;
// Decision on tracking
trackIt[i] = 0;
// Track final state particle
if (ks == 1) trackIt[i] = 1;
// Track semi-stable particles
- if ((ks ==1) || (fDecayer->GetLifetime(kf) > fMaxLifeTime)) trackIt[i] = 1;
+ if ((ks == 1) || (fDecayer->GetLifetime(kf) > fMaxLifeTime)) trackIt[i] = 1;
// Track particles selected by process if undecayed.
if (fForceDecay == kNoDecay) {
if (ParentSelected(kf)) trackIt[i] = 1;
p[0] = iparticle->Px();
p[1] = iparticle->Py();
p[2] = iparticle->Pz();
- origin[0] = fOrigin[0]+iparticle->Vx()/10.;
- origin[1] = fOrigin[1]+iparticle->Vy()/10.;
- origin[2] = fOrigin[2]+iparticle->Vz()/10.;
+ p[3] = iparticle->Energy();
+
+ origin[0] = fVertex[0]+iparticle->Vx()/10; // [cm]
+ origin[1] = fVertex[1]+iparticle->Vy()/10; // [cm]
+ origin[2] = fVertex[2]+iparticle->Vz()/10; // [cm]
+
Float_t tof = kconv*iparticle->T();
Int_t ipa = iparticle->GetFirstMother()-1;
Int_t iparent = (ipa > -1) ? pParent[ipa] : -1;
- SetTrack(fTrackIt*trackIt[i] ,
- iparent, kf, p, origin, polar, tof, kPPrimary, nt, 1., ks);
+
+ PushTrack(fTrackIt*trackIt[i], iparent, kf,
+ p[0], p[1], p[2], p[3],
+ origin[0], origin[1], origin[2], tof,
+ polar[0], polar[1], polar[2],
+ kPPrimary, nt, 1., ks);
pParent[i] = nt;
KeepTrack(nt);
- } // SetTrack loop
+ } // PushTrack loop
}
} else {
nc = GenerateMB();
} // mb ?
+
+ GetSubEventTime();
- if (pParent) delete[] pParent;
- if (pSelected) delete[] pSelected;
- if (trackIt) delete[] trackIt;
+ delete[] pParent;
+ delete[] pSelected;
+ delete[] trackIt;
if (nc > 0) {
switch (fCountMode) {
}
if (jev >= fNpart || fNpart == -1) {
fKineBias=Float_t(fNpart)/Float_t(fTrials);
- printf("\n Trials: %i %i %i\n",fTrials, fNpart, jev);
-
+
fQ += fPythia->GetVINT(51);
fX1 += fPythia->GetVINT(41);
fX2 += fPythia->GetVINT(42);
} // event loop
SetHighWaterMark(nt);
// adjust weight due to kinematic selection
- AdjustWeights();
+// AdjustWeights();
// get cross-section
fXsection=fPythia->GetPARI(1);
}
//
Int_t i, kf, nt, iparent;
Int_t nc = 0;
- Float_t p[3];
+ Float_t p[4];
Float_t polar[3] = {0,0,0};
Float_t origin[3] = {0,0,0};
// converts from mm/c to s
const Float_t kconv=0.001/2.999792458e8;
- Int_t np = fParticles->GetEntriesFast();
+
+
+ Int_t np = (fHadronisation) ? fParticles->GetEntriesFast() : fNpartons;
+
+
+
Int_t* pParent = new Int_t[np];
for (i=0; i< np; i++) pParent[i] = -1;
if (fProcess == kPyJets || fProcess == kPyDirectGamma) {
TParticle* jet1 = (TParticle *) fParticles->At(6);
TParticle* jet2 = (TParticle *) fParticles->At(7);
- if (!CheckTrigger(jet1, jet2)) return 0;
+ if (!CheckTrigger(jet1, jet2)) {
+ delete [] pParent;
+ return 0;
+ }
}
-
- for (i = 0; i<np; i++) {
+
+ if (fTriggerParticle) {
+ Bool_t triggered = kFALSE;
+ for (i = 0; i < np; i++) {
+ TParticle * iparticle = (TParticle *) fParticles->At(i);
+ kf = CheckPDGCode(iparticle->GetPdgCode());
+ if (kf != fTriggerParticle) continue;
+ if (iparticle->Pt() == 0.) continue;
+ if (TMath::Abs(iparticle->Eta()) > fTriggerEta) continue;
+ triggered = kTRUE;
+ break;
+ }
+ if (!triggered) {
+ delete [] pParent;
+ return 0;
+ }
+ }
+
+
+ // Check if there is a ccbar or bbbar pair with at least one of the two
+ // in fYMin < y < fYMax
+ if (fProcess == kPyCharmppMNRwmi || fProcess == kPyBeautyppMNRwmi) {
+ TParticle *hvq;
+ Bool_t theQ=kFALSE,theQbar=kFALSE,inYcut=kFALSE;
+ Float_t yQ;
+ Int_t pdgQ;
+ for(i=0; i<np; i++) {
+ hvq = (TParticle*)fParticles->At(i);
+ pdgQ = hvq->GetPdgCode();
+ if(TMath::Abs(pdgQ) != fFlavorSelect) continue;
+ if(pdgQ>0) { theQ=kTRUE; } else { theQbar=kTRUE; }
+ yQ = 0.5*TMath::Log((hvq->Energy()+hvq->Pz()+1.e-13)/
+ (hvq->Energy()-hvq->Pz()+1.e-13));
+ if(yQ>fYMin && yQ<fYMax) inYcut=kTRUE;
+ }
+ if (!theQ || !theQbar || !inYcut) {
+ delete[] pParent;
+ return 0;
+ }
+ }
+
+ //Introducing child cuts in case kPyW, kPyZ, kPyMb, and kPyMbNonDiff
+ if ( (fProcess == kPyW || fProcess == kPyZ || fProcess == kPyMb || fProcess == kPyMbNonDiffr)
+ && (fCutOnChild == 1) ) {
+ if ( !CheckKinematicsOnChild() ) {
+ delete[] pParent;
+ return 0;
+ }
+ }
+
+
+ for (i = 0; i < np; i++) {
Int_t trackIt = 0;
TParticle * iparticle = (TParticle *) fParticles->At(i);
kf = CheckPDGCode(iparticle->GetPdgCode());
p[0] = iparticle->Px();
p[1] = iparticle->Py();
p[2] = iparticle->Pz();
- origin[0] = fOrigin[0]+iparticle->Vx()/10.;
- origin[1] = fOrigin[1]+iparticle->Vy()/10.;
- origin[2] = fOrigin[2]+iparticle->Vz()/10.;
- Float_t tof=kconv*iparticle->T();
- SetTrack(fTrackIt*trackIt, iparent, kf, p, origin, polar,
- tof, kPPrimary, nt, 1., ks);
+ p[3] = iparticle->Energy();
+
+
+ origin[0] = fVertex[0]+iparticle->Vx()/10; // [cm]
+ origin[1] = fVertex[1]+iparticle->Vy()/10; // [cm]
+ origin[2] = fVertex[2]+iparticle->Vz()/10; // [cm]
+
+ Float_t tof = fEventTime + kconv * iparticle->T();
+
+ PushTrack(fTrackIt*trackIt, iparent, kf,
+ p[0], p[1], p[2], p[3],
+ origin[0], origin[1], origin[2], tof,
+ polar[0], polar[1], polar[2],
+ kPPrimary, nt, 1., ks);
+ //
+ // Special Treatment to store color-flow
+ //
+ if (ks == 3 || ks == 13 || ks == 14) {
+ TParticle* particle = 0;
+ if (fStack) {
+ particle = fStack->Particle(nt);
+ } else {
+ particle = gAlice->Stack()->Particle(nt);
+ }
+ particle->SetFirstDaughter(fPythia->GetK(2, i));
+ particle->SetLastDaughter(fPythia->GetK(3, i));
+ }
+
KeepTrack(nt);
pParent[i] = nt;
+ SetHighWaterMark(nt);
+
} // select particle
} // particle loop
- if (pParent) delete[] pParent;
+ delete[] pParent;
- printf("\n I've put %i particles on the stack \n",nc);
- return nc;
+ return 1;
}
{
// Print x-section summary
fPythia->Pystat(1);
- fQ /= fNev;
- fX1 /= fNev;
- fX2 /= fNev;
+
+ if (fNev > 0.) {
+ fQ /= fNev;
+ fX1 /= fNev;
+ fX2 /= fNev;
+ }
+
printf("\nTotal number of Pyevnt() calls %d\n", fTrialsRun);
printf("\nMean Q, x1, x2: %f %f %f\n", fQ, fX1, fX2);
-
-
}
-void AliGenPythia::AdjustWeights()
+void AliGenPythia::AdjustWeights() const
{
// Adjust the weights after generation of all events
//
- TParticle *part;
- Int_t ntrack=gAlice->GetNtrack();
- for (Int_t i=0; i<ntrack; i++) {
- part= gAlice->Particle(i);
- part->SetWeight(part->GetWeight()*fKineBias);
+ if (gAlice) {
+ TParticle *part;
+ Int_t ntrack=gAlice->GetMCApp()->GetNtrack();
+ for (Int_t i=0; i<ntrack; i++) {
+ part= gAlice->GetMCApp()->Particle(i);
+ part->SetWeight(part->GetWeight()*fKineBias);
+ }
}
}
void AliGenPythia::MakeHeader()
{
+//
+// Make header for the simulated event
+//
+ if (gAlice) {
+ if (gAlice->GetEvNumber()>=fDebugEventFirst &&
+ gAlice->GetEvNumber()<=fDebugEventLast) fPythia->Pylist(2);
+ }
+
// Builds the event header, to be called after each event
- AliGenEventHeader* header = new AliGenPythiaEventHeader("Pythia");
+ if (fHeader) delete fHeader;
+ fHeader = new AliGenPythiaEventHeader("Pythia");
//
// Event type
- ((AliGenPythiaEventHeader*) header)->SetProcessType(fPythia->GetMSTI(1));
+ ((AliGenPythiaEventHeader*) fHeader)->SetProcessType(fPythia->GetMSTI(1));
//
// Number of trials
- ((AliGenPythiaEventHeader*) header)->SetTrials(fTrials);
+ ((AliGenPythiaEventHeader*) fHeader)->SetTrials(fTrials);
//
// Event Vertex
- header->SetPrimaryVertex(fEventVertex);
+ fHeader->SetPrimaryVertex(fVertex);
//
// Jets that have triggered
+
if (fProcess == kPyJets)
{
Int_t ntrig, njet;
Float_t jets[4][10];
GetJets(njet, ntrig, jets);
+
for (Int_t i = 0; i < ntrig; i++) {
- ((AliGenPythiaEventHeader*) header)->AddJet(jets[0][i], jets[1][i], jets[2][i],
+ ((AliGenPythiaEventHeader*) fHeader)->AddJet(jets[0][i], jets[1][i], jets[2][i],
jets[3][i]);
}
}
- gAlice->SetGenEventHeader(header);
+//
+// Copy relevant information from external header, if present.
+//
+ Float_t uqJet[4];
+
+ if (fRL) {
+ AliGenPythiaEventHeader* exHeader = (AliGenPythiaEventHeader*) (fRL->GetHeader()->GenEventHeader());
+ for (Int_t i = 0; i < exHeader->NTriggerJets(); i++)
+ {
+ printf("Adding Jet %d %d \n", i, exHeader->NTriggerJets());
+
+
+ exHeader->TriggerJet(i, uqJet);
+ ((AliGenPythiaEventHeader*) fHeader)->AddUQJet(uqJet[0], uqJet[1], uqJet[2], uqJet[3]);
+ }
+ }
+//
+// Store quenching parameters
+//
+ if (fQuench){
+ Double_t z[4];
+ Double_t xp, yp;
+ if (fQuench == 1) {
+ // Pythia::Quench()
+ fPythia->GetQuenchingParameters(xp, yp, z);
+ } else {
+ // Pyquen
+ Double_t r1 = PARIMP.rb1;
+ Double_t r2 = PARIMP.rb2;
+ Double_t b = PARIMP.b1;
+ Double_t r = 0.5 * TMath::Sqrt(2. * (r1 * r1 + r2 * r2) - b * b);
+ Double_t phi = PARIMP.psib1;
+ xp = r * TMath::Cos(phi);
+ yp = r * TMath::Sin(phi);
+
+ }
+ ((AliGenPythiaEventHeader*) fHeader)->SetXYJet(xp, yp);
+ ((AliGenPythiaEventHeader*) fHeader)->SetZQuench(z);
+ }
+//
+// Store pt^hard
+ ((AliGenPythiaEventHeader*) fHeader)->SetPtHard(fPythia->GetVINT(47));
+//
+// Pass header
+//
+ AddHeader(fHeader);
+}
+
+void AliGenPythia::AddHeader(AliGenEventHeader* header)
+{
+ // Add header to container or runloader
+ if (fContainer) {
+ fContainer->AddHeader(header);
+ } else {
+ AliRunLoader::GetRunLoader()->GetHeader()->SetGenEventHeader(header);
+ }
}
-
+
Bool_t AliGenPythia::CheckTrigger(TParticle* jet1, TParticle* jet2)
{
//
GetJets(njets, ntrig, jets);
- if (ntrig) triggered = kTRUE;
+ if (ntrig || fEtMinJet == 0.) triggered = kTRUE;
//
} else {
Int_t ij = 0;
}
return triggered;
}
+
+
+
+Bool_t AliGenPythia::CheckKinematicsOnChild(){
+//
+//Checking Kinematics on Child (status code 1, particle code ?, kin cuts
+//
+ Bool_t checking = kFALSE;
+ Int_t j, kcode, ks, km;
+ Int_t nPartAcc = 0; //number of particles in the acceptance range
+ Int_t numberOfAcceptedParticles = 1;
+ if (fNumberOfAcceptedParticles != 0) { numberOfAcceptedParticles = fNumberOfAcceptedParticles; }
+ Int_t npart = fParticles->GetEntriesFast();
+
+ for (j = 0; j<npart; j++) {
+ TParticle * jparticle = (TParticle *) fParticles->At(j);
+ kcode = TMath::Abs( CheckPDGCode(jparticle->GetPdgCode()) );
+ ks = jparticle->GetStatusCode();
+ km = jparticle->GetFirstMother();
+
+ if( (ks == 1) && (kcode == fPdgCodeParticleforAcceptanceCut) && (KinematicSelection(jparticle,1)) ){
+ nPartAcc++;
+ }
+ if( numberOfAcceptedParticles <= nPartAcc){
+ checking = kTRUE;
+ break;
+ }
+ }
+
+ return checking;
+}
+
AliGenPythia& AliGenPythia::operator=(const AliGenPythia& rhs)
{
// Assignment operator
+ rhs.Copy(*this);
return *this;
}
-void AliGenPythia::LoadEvent()
+void AliGenPythia::LoadEvent(AliStack* stack, Int_t flag, Int_t reHadr)
{
//
// Load event into Pythia Common Block
//
-
-
- Int_t npart = (Int_t) (gAlice->TreeK())->GetEntries();
- (fPythia->GetPyjets())->N = npart;
+ Int_t npart = stack -> GetNprimary();
+ Int_t n0 = 0;
+
+ if (!flag) {
+ (fPythia->GetPyjets())->N = npart;
+ } else {
+ n0 = (fPythia->GetPyjets())->N;
+ (fPythia->GetPyjets())->N = n0 + npart;
+ }
+
+
for (Int_t part = 0; part < npart; part++) {
- TParticle *MPart = gAlice->Particle(part);
- Int_t kf = MPart->GetPdgCode();
- Int_t ks = MPart->GetStatusCode();
- Float_t px = MPart->Px();
- Float_t py = MPart->Py();
- Float_t pz = MPart->Pz();
- Float_t e = MPart->Energy();
- Float_t p = TMath::Sqrt(px * px + py * py + pz * pz);
- Float_t m = TMath::Sqrt(e * e - p * p);
+ TParticle *mPart = stack->Particle(part);
+
+ Int_t kf = mPart->GetPdgCode();
+ Int_t ks = mPart->GetStatusCode();
+ Int_t idf = mPart->GetFirstDaughter();
+ Int_t idl = mPart->GetLastDaughter();
+ if (reHadr) {
+ if (ks == 11 || ks == 12) {
+ ks -= 10;
+ idf = -1;
+ idl = -1;
+ }
+ }
- (fPythia->GetPyjets())->P[0][part] = px;
- (fPythia->GetPyjets())->P[1][part] = py;
- (fPythia->GetPyjets())->P[2][part] = pz;
- (fPythia->GetPyjets())->P[3][part] = e;
- (fPythia->GetPyjets())->P[4][part] = m;
+ Float_t px = mPart->Px();
+ Float_t py = mPart->Py();
+ Float_t pz = mPart->Pz();
+ Float_t e = mPart->Energy();
+ Float_t m = mPart->GetCalcMass();
- (fPythia->GetPyjets())->K[1][part] = kf;
- (fPythia->GetPyjets())->K[0][part] = ks;
+
+ (fPythia->GetPyjets())->P[0][part+n0] = px;
+ (fPythia->GetPyjets())->P[1][part+n0] = py;
+ (fPythia->GetPyjets())->P[2][part+n0] = pz;
+ (fPythia->GetPyjets())->P[3][part+n0] = e;
+ (fPythia->GetPyjets())->P[4][part+n0] = m;
+
+ (fPythia->GetPyjets())->K[1][part+n0] = kf;
+ (fPythia->GetPyjets())->K[0][part+n0] = ks;
+ (fPythia->GetPyjets())->K[3][part+n0] = idf + 1;
+ (fPythia->GetPyjets())->K[4][part+n0] = idl + 1;
+ (fPythia->GetPyjets())->K[2][part+n0] = mPart->GetFirstMother() + 1;
}
}
-void AliGenPythia::RecJetsUA1(Float_t eCellMin, Float_t eCellSeed, Float_t eMin, Float_t rMax,
- Int_t& njets, Float_t jets [4][50])
+
+void AliGenPythia::RecJetsUA1(Int_t& njets, Float_t jets [4][50])
{
//
// Calls the Pythia jet finding algorithm to find jets in the current event
Float_t pz = (fPythia->GetPyjets())->P[2][n+i];
Float_t e = (fPythia->GetPyjets())->P[3][n+i];
Float_t pt = TMath::Sqrt(px * px + py * py);
- Float_t phi = TMath::ATan2(py,px);
+ Float_t phi = TMath::Pi() + TMath::ATan2(-py, -px);
Float_t theta = TMath::ATan2(pt,pz);
Float_t et = e * TMath::Sin(theta);
Float_t eta = -TMath::Log(TMath::Tan(theta / 2.));
-
if (
eta > fEtaMinJet && eta < fEtaMaxJet &&
- phi > fPhiMinJet && eta < fPhiMaxJet &&
+ phi > fPhiMinJet && phi < fPhiMaxJet &&
et > fEtMinJet && et < fEtMaxJet
)
{
jets[2][nJetsTrig] = pz;
jets[3][nJetsTrig] = e;
nJetsTrig++;
-
+// printf("\n........-Jet #%d: %10.3f %10.3f %10.3f %10.3f \n", i, pt, et, eta, phi * kRaddeg);
} else {
// printf("\n........-Jet #%d: %10.3f %10.3f %10.3f %10.3f \n", i, pt, et, eta, phi * kRaddeg);
}
}
}
+void AliGenPythia::GetSubEventTime()
+{
+ // Calculates time of the next subevent
+ fEventTime = 0.;
+ if (fEventsTime) {
+ TArrayF &array = *fEventsTime;
+ fEventTime = array[fCurSubEvent++];
+ }
+ // printf(" Event time: %d %f %p",fCurSubEvent,fEventTime,fEventsTime);
+ return;
+}
#ifdef never
void AliGenPythia::Streamer(TBuffer &R__b)
}
#endif
+
+
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff