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

#include "AliGenerator.h"
#include "AliGenPythia.h"
#include "AliRun.h"
#include "AliPythia.h"
#include <TDirectory.h>
#include <TFile.h>
#include <TTree.h>
#include <stdlib.h>
#include <AliPythia.h>
#include <TParticle.h>
//#include <GParticle.h>
 ClassImp(AliGenPythia)

AliGenPythia::AliGenPythia()
                 :AliGenerator()
{
}

AliGenPythia::AliGenPythia(Int_t npart)
                 :AliGenerator(npart)
{
// default charm production at 5. 5 TeV
// semimuonic decay
// structure function GRVHO
//
    fXsection  = 0.;
    fParentSelect.Set(5);
    fChildSelect.Set(5);
    for (Int_t i=0; i<5; i++) fParentSelect[i]=fChildSelect[i]=0;
    SetProcess();
    SetStrucFunc();
    ForceDecay();
    SetPtHard();
    SetEnergyCMS();
}

AliGenPythia::~AliGenPythia()
{
}

void AliGenPythia::Init()
{
    SetMC(new AliPythia());
    fPythia=(AliPythia*) fgMCEvGen;
//
    fParentWeight=1./Float_t(fNpart);
//
//  Forward Paramters to the AliPythia object
    fPythia->DefineParticles();
    fPythia->SetCKIN(3,fPtHardMin);
    fPythia->SetCKIN(4,fPtHardMax);    
    fPythia->ProcInit(fProcess,fEnergyCMS,fStrucFunc);
    fPythia->ForceDecay(fForceDecay);
    fPythia->LuList(0);
    fPythia->PyStat(2);
//  Parent and Children Selection
    switch (fProcess) 
    {
    case charm:

	fParentSelect[0]=411;
	fParentSelect[1]=421;
	fParentSelect[2]=431;
	fParentSelect[3]=4122;	
	break;
    case charm_unforced:

	fParentSelect[0]=411;
	fParentSelect[1]=421;
	fParentSelect[2]=431;
	fParentSelect[3]=4122;	
	break;
    case beauty:
	fParentSelect[0]=511;
	fParentSelect[1]=521;
	fParentSelect[2]=531;
	fParentSelect[3]=5122;	
	break;
    case beauty_unforced:
	fParentSelect[0]=511;
	fParentSelect[1]=521;
	fParentSelect[2]=531;
	fParentSelect[3]=5122;	
	break;
    case jpsi_chi:
    case jpsi:
	fParentSelect[0]=443;
	break;
    case mb:
	break;
    }

    switch (fForceDecay) 
    {
    case semielectronic:
    case dielectron:
    case b_jpsi_dielectron:
    case b_psip_dielectron:
	fChildSelect[0]=11;	
	break;
    case semimuonic:
    case dimuon:
    case b_jpsi_dimuon:
    case b_psip_dimuon:
    case pitomu:
    case katomu:
	fChildSelect[0]=13;
	break;
    }
}

void AliGenPythia::Generate()
{

    Float_t polar[3] =   {0,0,0};
    Float_t origin[3]=   {0,0,0};
    Float_t origin_p[3]= {0,0,0};
    Float_t origin0[3]=  {0,0,0};
    Float_t p[3], p_p[4], random[6];
    static TClonesArray *particles;
//  converts from mm/c to s
    const Float_t kconv=0.001/2.999792458e8;
    
    
//
    Int_t nt=0;
    Int_t nt_p=0;
    Int_t jev=0;
    Int_t j, kf;

    if(!particles) particles=new TClonesArray("TParticle",1000);
    
    fTrials=0;
    for (j=0;j<3;j++) origin0[j]=fOrigin[j];
    if(fVertexSmear==perEvent) {
	gMC->Rndm(random,6);
	for (j=0;j<3;j++) {
	    origin0[j]+=fOsigma[j]*TMath::Cos(2*random[2*j]*TMath::Pi())*
		TMath::Sqrt(-2*TMath::Log(random[2*j+1]));
	    fPythia->SetMSTP(151,0);
	}
    } else if (fVertexSmear==perTrack) {
	fPythia->SetMSTP(151,0);
	for (j=0;j<3;j++) {
	    fPythia->SetPARP(151+j, fOsigma[j]*10.);
	}
    }
    while(1)
    {
	fPythia->PyEvnt();
	fTrials++;
	fPythia->ImportParticles(particles,"All");
	Int_t np = particles->GetEntriesFast();
	printf("\n **************************************************%d\n",np);
	Int_t nc=0;
	if (np == 0 ) continue;
	if (fProcess != mb) {
	    for (Int_t i = 0; i<np; i++) {
		TParticle *  iparticle = (TParticle *) particles->At(i);
		kf = iparticle->GetPdgCode();
		fChildWeight=(fPythia->GetBraPart(kf))*fParentWeight;	  
//
// Parent
		if (ParentSelected(TMath::Abs(kf))) {
		    if (KinematicSelection(iparticle)) {
			if (nc==0) {
//
// Store information concerning the hard scattering process
//
			    Float_t mass_p = fPythia->GetPARI(13);
			    Float_t   pt_p = fPythia->GetPARI(17);
			    Float_t    y_p = fPythia->GetPARI(37);
			    Float_t  xmt_p = sqrt(pt_p*pt_p+mass_p*mass_p);
			    Float_t     ty = Float_t(TMath::TanH(y_p));
			    p_p[0] = pt_p;
			    p_p[1] = 0;
			    p_p[2] = xmt_p*ty/sqrt(1.-ty*ty);
			    p_p[3] = mass_p;
			    gAlice->SetTrack(0,-1,-1,
					     p_p,origin_p,polar,
					     0,"Hard Scat.",nt_p,fParentWeight);
			    gAlice->KeepTrack(nt_p);
			}
			nc++;
//
// store parent track information
			p[0]=iparticle->Px();
			p[1]=iparticle->Py();
			p[2]=iparticle->Pz();
			origin[0]=origin0[0]+iparticle->Vx()/10;
			origin[1]=origin0[1]+iparticle->Vy()/10;
			origin[2]=origin0[2]+iparticle->Vz()/10;

			Int_t ifch=iparticle->GetFirstDaughter();
			Int_t ilch=iparticle->GetLastDaughter();	
			if (ifch !=0 && ilch !=0) {
			    gAlice->SetTrack(0,nt_p,kf,
					     p,origin,polar,
					     0,"Primary",nt,fParentWeight);
			    gAlice->KeepTrack(nt);
			    Int_t iparent = nt;
//
// Children	    

			    for (j=ifch; j<=ilch; j++)
			    {
				TParticle *  ichild = 
				    (TParticle *) particles->At(j-1);
				kf = ichild->GetPdgCode();
//
// 
				if (ChildSelected(TMath::Abs(kf))) {
				    origin[0]=ichild->Vx();
				    origin[1]=ichild->Vy();
				    origin[2]=ichild->Vz();		
				    p[0]=ichild->Px();
				    p[1]=ichild->Py();
				    p[2]=ichild->Pz();
				    Float_t tof=kconv*ichild->T();
				    gAlice->SetTrack(fTrackIt, iparent, kf,
						     p,origin,polar,
						     tof,"Decay",nt,fChildWeight);
				    gAlice->KeepTrack(nt);
				} // select child
			    } // child loop
			}
		    } // kinematic selection
		} // select particle
	    } // particle loop
	} else {
	    for (Int_t i = 0; i<np; i++) {
		TParticle *  iparticle = (TParticle *) particles->At(i);
		kf = iparticle->GetPdgCode();
		Int_t ks = iparticle->GetStatusCode();
		if (ks==1 && kf!=0 && KinematicSelection(iparticle)) {
			nc++;
//
// store track information
			p[0]=iparticle->Px();
			p[1]=iparticle->Py();
			p[2]=iparticle->Pz();
			origin[0]=origin0[0]+iparticle->Vx()/10;
			origin[1]=origin0[1]+iparticle->Vy()/10;
			origin[2]=origin0[2]+iparticle->Vz()/10;
			Float_t tof=kconv*iparticle->T();
			gAlice->SetTrack(fTrackIt,-1,kf,p,origin,polar,
					 tof,"Primary",nt);
			gAlice->KeepTrack(nt);
		} // select particle
	    } // particle loop 
	    printf("\n I've put %i particles on the stack \n",nc);
	} // mb ?
	if (nc > 0) {
	    jev+=nc;
	    if (jev >= fNpart) {
		fKineBias=Float_t(fNpart)/Float_t(fTrials);
		printf("\n Trials: %i\n",fTrials);
		break;
	    }
	}
    } // event loop
//  adjust weight due to kinematic selection
    AdjustWeights();
//  get cross-section
    fXsection=fPythia->GetPARI(1);
}

Bool_t AliGenPythia::ParentSelected(Int_t ip)
{
    for (Int_t i=0; i<5; i++)
    {
	if (fParentSelect[i]==ip) return kTRUE;
    }
    return kFALSE;
}

Bool_t AliGenPythia::ChildSelected(Int_t ip)
{
    for (Int_t i=0; i<5; i++)
    {
	if (fChildSelect[i]==ip) return kTRUE;
    }
    return kFALSE;
}

Bool_t AliGenPythia::KinematicSelection(TParticle *particle)
{
    Float_t px=particle->Px();
    Float_t py=particle->Py();
    Float_t pz=particle->Pz();
    Float_t  e=particle->Energy();

//
//  transverse momentum cut    
    Float_t pt=TMath::Sqrt(px*px+py*py);
    if (pt > fPtMax || pt < fPtMin) 
    {
//	printf("\n failed pt cut %f %f %f \n",pt,fPtMin,fPtMax);
	return kFALSE;
    }
//
// momentum cut
    Float_t p=TMath::Sqrt(px*px+py*py+pz*pz);
    if (p > fPMax || p < fPMin) 
    {
//	printf("\n failed p cut %f %f %f \n",p,fPMin,fPMax);
	return kFALSE;
    }
    
//
// theta cut
    Float_t  theta = Float_t(TMath::ATan2(Double_t(pt),Double_t(pz)));
    if (theta > fThetaMax || theta < fThetaMin) 
    {
//	printf("\n failed theta cut %f %f %f \n",theta,fThetaMin,fThetaMax);
	return kFALSE;
    }

//
// rapidity cut
    Float_t y = 0.5*TMath::Log((e+pz)/(e-pz));
    if (y > fYMax || y < fYMin)
    {
//	printf("\n failed y cut %f %f %f \n",y,fYMin,fYMax);
	return kFALSE;
    }

//
// phi cut
    Float_t phi=Float_t(TMath::ATan2(Double_t(py),Double_t(px)))+TMath::Pi();
    if (phi > fPhiMax || phi < fPhiMin)
    {
//	printf("\n failed phi cut %f %f %f \n",phi,fPhiMin,fPhiMax);
	return kFALSE;
    }

    return kTRUE;
}
void AliGenPythia::AdjustWeights()
{
    TClonesArray *PartArray = gAlice->Particles();
    TParticle *Part;
    Int_t ntrack=gAlice->GetNtrack();
    for (Int_t i=0; i<ntrack; i++) {
	Part= (TParticle*) PartArray->UncheckedAt(i);
	Part->SetWeight(Part->GetWeight()*fKineBias);
    }
}
Commit	Line	Data
fe4da5cc	1	#include "AliGenerator.h"
fe4da5cc	2	#include "AliGenPythia.h"
fe4da5cc	3	#include "AliRun.h"
	4	#include "AliPythia.h"
	5	#include <TDirectory.h>
	6	#include <TFile.h>
	7	#include <TTree.h>
	8	#include <stdlib.h>
	9	#include <AliPythia.h>
1578254f	10	#include <TParticle.h>
1578254f	11	//#include <GParticle.h>
fe4da5cc	12	ClassImp(AliGenPythia)
	13
	14	AliGenPythia::AliGenPythia()
	15	:AliGenerator()
	16	{
	17	}
	18
	19	AliGenPythia::AliGenPythia(Int_t npart)
	20	:AliGenerator(npart)
	21	{
	22	// default charm production at 5. 5 TeV
	23	// semimuonic decay
	24	// structure function GRVHO
	25	//
	26	fXsection = 0.;
	27	fParentSelect.Set(5);
	28	fChildSelect.Set(5);
	29	for (Int_t i=0; i<5; i++) fParentSelect[i]=fChildSelect[i]=0;
	30	SetProcess();
	31	SetStrucFunc();
	32	ForceDecay();
	33	SetPtHard();
	34	SetEnergyCMS();
	35	}
	36
	37	AliGenPythia::~AliGenPythia()
	38	{
	39	}
	40
	41	void AliGenPythia::Init()
	42	{
	43	SetMC(new AliPythia());
	44	fPythia=(AliPythia*) fgMCEvGen;
	45	//
	46	fParentWeight=1./Float_t(fNpart);
	47	//
	48	// Forward Paramters to the AliPythia object
	49	fPythia->DefineParticles();
fe4da5cc	50	fPythia->SetCKIN(3,fPtHardMin);
	51	fPythia->SetCKIN(4,fPtHardMax);
	52	fPythia->ProcInit(fProcess,fEnergyCMS,fStrucFunc);
5be1fe76	53	fPythia->ForceDecay(fForceDecay);
fe4da5cc	54	fPythia->LuList(0);
	55	fPythia->PyStat(2);
	56	// Parent and Children Selection
	57	switch (fProcess)
	58	{
	59	case charm:
	60
	61	fParentSelect[0]=411;
	62	fParentSelect[1]=421;
	63	fParentSelect[2]=431;
	64	fParentSelect[3]=4122;
	65	break;
	66	case charm_unforced:
	67
	68	fParentSelect[0]=411;
	69	fParentSelect[1]=421;
	70	fParentSelect[2]=431;
	71	fParentSelect[3]=4122;
	72	break;
	73	case beauty:
	74	fParentSelect[0]=511;
	75	fParentSelect[1]=521;
	76	fParentSelect[2]=531;
	77	fParentSelect[3]=5122;
	78	break;
	79	case beauty_unforced:
	80	fParentSelect[0]=511;
	81	fParentSelect[1]=521;
	82	fParentSelect[2]=531;
	83	fParentSelect[3]=5122;
	84	break;
	85	case jpsi_chi:
	86	case jpsi:
	87	fParentSelect[0]=443;
	88	break;
5be1fe76	89	case mb:
5be1fe76	90	break;
fe4da5cc	91	}
	92
	93	switch (fForceDecay)
	94	{
	95	case semielectronic:
	96	case dielectron:
	97	case b_jpsi_dielectron:
	98	case b_psip_dielectron:
	99	fChildSelect[0]=11;
	100	break;
	101	case semimuonic:
	102	case dimuon:
	103	case b_jpsi_dimuon:
	104	case b_psip_dimuon:
5be1fe76	105	case pitomu:
5be1fe76	106	case katomu:
fe4da5cc	107	fChildSelect[0]=13;
	108	break;
	109	}
	110	}
	111
	112	void AliGenPythia::Generate()
	113	{
fe4da5cc	114
5be1fe76	115	Float_t polar[3] = {0,0,0};
	116	Float_t origin[3]= {0,0,0};
	117	Float_t origin_p[3]= {0,0,0};
	118	Float_t origin0[3]= {0,0,0};
	119	Float_t p[3], p_p[4], random[6];
09fd3ea2	120	static TClonesArray *particles;
5be1fe76	121	// converts from mm/c to s
5be1fe76	122	const Float_t kconv=0.001/2.999792458e8;
fe4da5cc	123
	124
	125	//
fe4da5cc	126	Int_t nt=0;
5be1fe76	127	Int_t nt_p=0;
fe4da5cc	128	Int_t jev=0;
7921755b	129	Int_t j, kf;
09fd3ea2	130
09fd3ea2	131	if(!particles) particles=new TClonesArray("TParticle",1000);
fe4da5cc	132
	133	fTrials=0;
	134	for (j=0;j<3;j++) origin0[j]=fOrigin[j];
	135	if(fVertexSmear==perEvent) {
cfce8870	136	gMC->Rndm(random,6);
fe4da5cc	137	for (j=0;j<3;j++) {
	138	origin0[j]+=fOsigma[j]TMath::Cos(2random[2j]TMath::Pi())*
	139	TMath::Sqrt(-2TMath::Log(random[2j+1]));
	140	fPythia->SetMSTP(151,0);
	141	}
	142	} else if (fVertexSmear==perTrack) {
	143	fPythia->SetMSTP(151,0);
	144	for (j=0;j<3;j++) {
	145	fPythia->SetPARP(151+j, fOsigma[j]*10.);
	146	}
	147	}
fe4da5cc	148	while(1)
	149	{
	150	fPythia->PyEvnt();
	151	fTrials++;
f1092809	152	fPythia->ImportParticles(particles,"All");
fe4da5cc	153	Int_t np = particles->GetEntriesFast();
	154	printf("\n **************************************************%d\n",np);
	155	Int_t nc=0;
	156	if (np == 0 ) continue;
5be1fe76	157	if (fProcess != mb) {
5be1fe76	158	for (Int_t i = 0; i<np; i++) {
1578254f	159	TParticle * iparticle = (TParticle *) particles->At(i);
7921755b	160	kf = iparticle->GetPdgCode();
5be1fe76	161	fChildWeight=(fPythia->GetBraPart(kf))*fParentWeight;
fe4da5cc	162	//
fe4da5cc	163	// Parent
5be1fe76	164	if (ParentSelected(TMath::Abs(kf))) {
	165	if (KinematicSelection(iparticle)) {
	166	if (nc==0) {
	167	//
	168	// Store information concerning the hard scattering process
	169	//
	170	Float_t mass_p = fPythia->GetPARI(13);
	171	Float_t pt_p = fPythia->GetPARI(17);
	172	Float_t y_p = fPythia->GetPARI(37);
	173	Float_t xmt_p = sqrt(pt_ppt_p+mass_pmass_p);
	174	Float_t ty = Float_t(TMath::TanH(y_p));
	175	p_p[0] = pt_p;
	176	p_p[1] = 0;
	177	p_p[2] = xmt_pty/sqrt(1.-tyty);
	178	p_p[3] = mass_p;
	179	gAlice->SetTrack(0,-1,-1,
	180	p_p,origin_p,polar,
	181	0,"Hard Scat.",nt_p,fParentWeight);
	182	gAlice->KeepTrack(nt_p);
	183	}
	184	nc++;
fe4da5cc	185	//
fe4da5cc	186	// store parent track information
1578254f	187	p[0]=iparticle->Px();
	188	p[1]=iparticle->Py();
	189	p[2]=iparticle->Pz();
	190	origin[0]=origin0[0]+iparticle->Vx()/10;
	191	origin[1]=origin0[1]+iparticle->Vy()/10;
	192	origin[2]=origin0[2]+iparticle->Vz()/10;
fe4da5cc	193
1578254f	194	Int_t ifch=iparticle->GetFirstDaughter();
1578254f	195	Int_t ilch=iparticle->GetLastDaughter();
5be1fe76	196	if (ifch !=0 && ilch !=0) {
1578254f	197	gAlice->SetTrack(0,nt_p,kf,
5be1fe76	198	p,origin,polar,
	199	0,"Primary",nt,fParentWeight);
	200	gAlice->KeepTrack(nt);
	201	Int_t iparent = nt;
fe4da5cc	202	//
	203	// Children
	204
7921755b	205	for (j=ifch; j<=ilch; j++)
5be1fe76	206	{
1578254f	207	TParticle * ichild =
1578254f	208	(TParticle *) particles->At(j-1);
fa1fa361	209	kf = ichild->GetPdgCode();
fe4da5cc	210	//
fe4da5cc	211	//
5be1fe76	212	if (ChildSelected(TMath::Abs(kf))) {
1578254f	213	origin[0]=ichild->Vx();
	214	origin[1]=ichild->Vy();
	215	origin[2]=ichild->Vz();
	216	p[0]=ichild->Px();
	217	p[1]=ichild->Py();
	218	p[2]=ichild->Pz();
	219	Float_t tof=kconv*ichild->T();
	220	gAlice->SetTrack(fTrackIt, iparent, kf,
5be1fe76	221	p,origin,polar,
	222	tof,"Decay",nt,fChildWeight);
	223	gAlice->KeepTrack(nt);
	224	} // select child
	225	} // child loop
	226	}
	227	} // kinematic selection
	228	} // select particle
	229	} // particle loop
	230	} else {
	231	for (Int_t i = 0; i<np; i++) {
1578254f	232	TParticle * iparticle = (TParticle *) particles->At(i);
fa1fa361	233	kf = iparticle->GetPdgCode();
1578254f	234	Int_t ks = iparticle->GetStatusCode();
1578254f	235	if (ks==1 && kf!=0 && KinematicSelection(iparticle)) {
5be1fe76	236	nc++;
	237	//
	238	// store track information
1578254f	239	p[0]=iparticle->Px();
	240	p[1]=iparticle->Py();
	241	p[2]=iparticle->Pz();
	242	origin[0]=origin0[0]+iparticle->Vx()/10;
	243	origin[1]=origin0[1]+iparticle->Vy()/10;
	244	origin[2]=origin0[2]+iparticle->Vz()/10;
	245	Float_t tof=kconv*iparticle->T();
	246	gAlice->SetTrack(fTrackIt,-1,kf,p,origin,polar,
5be1fe76	247	tof,"Primary",nt);
	248	gAlice->KeepTrack(nt);
	249	} // select particle
	250	} // particle loop
	251	printf("\n I've put %i particles on the stack \n",nc);
	252	} // mb ?
fe4da5cc	253	if (nc > 0) {
5be1fe76	254	jev+=nc;
fe4da5cc	255	if (jev >= fNpart) {
	256	fKineBias=Float_t(fNpart)/Float_t(fTrials);
	257	printf("\n Trials: %i\n",fTrials);
	258	break;
	259	}
	260	}
	261	} // event loop
	262	// adjust weight due to kinematic selection
	263	AdjustWeights();
	264	// get cross-section
	265	fXsection=fPythia->GetPARI(1);
	266	}
	267
	268	Bool_t AliGenPythia::ParentSelected(Int_t ip)
	269	{
	270	for (Int_t i=0; i<5; i++)
	271	{
	272	if (fParentSelect[i]==ip) return kTRUE;
	273	}
	274	return kFALSE;
	275	}
	276
	277	Bool_t AliGenPythia::ChildSelected(Int_t ip)
	278	{
	279	for (Int_t i=0; i<5; i++)
	280	{
	281	if (fChildSelect[i]==ip) return kTRUE;
	282	}
	283	return kFALSE;
	284	}
	285
1578254f	286	Bool_t AliGenPythia::KinematicSelection(TParticle *particle)
fe4da5cc	287	{
1578254f	288	Float_t px=particle->Px();
	289	Float_t py=particle->Py();
	290	Float_t pz=particle->Pz();
	291	Float_t e=particle->Energy();
fe4da5cc	292
	293	//
	294	// transverse momentum cut
	295	Float_t pt=TMath::Sqrt(pxpx+pypy);
	296	if (pt > fPtMax \|\| pt < fPtMin)
	297	{
	298	// printf("\n failed pt cut %f %f %f \n",pt,fPtMin,fPtMax);
	299	return kFALSE;
	300	}
	301	//
	302	// momentum cut
	303	Float_t p=TMath::Sqrt(pxpx+pypy+pz*pz);
	304	if (p > fPMax \|\| p < fPMin)
	305	{
	306	// printf("\n failed p cut %f %f %f \n",p,fPMin,fPMax);
	307	return kFALSE;
	308	}
	309
	310	//
	311	// theta cut
5be1fe76	312	Float_t theta = Float_t(TMath::ATan2(Double_t(pt),Double_t(pz)));
fe4da5cc	313	if (theta > fThetaMax \|\| theta < fThetaMin)
	314	{
	315	// printf("\n failed theta cut %f %f %f \n",theta,fThetaMin,fThetaMax);
	316	return kFALSE;
	317	}
	318
	319	//
	320	// rapidity cut
	321	Float_t y = 0.5*TMath::Log((e+pz)/(e-pz));
	322	if (y > fYMax \|\| y < fYMin)
	323	{
	324	// printf("\n failed y cut %f %f %f \n",y,fYMin,fYMax);
	325	return kFALSE;
	326	}
	327
	328	//
	329	// phi cut
	330	Float_t phi=Float_t(TMath::ATan2(Double_t(py),Double_t(px)))+TMath::Pi();
	331	if (phi > fPhiMax \|\| phi < fPhiMin)
	332	{
	333	// printf("\n failed phi cut %f %f %f \n",phi,fPhiMin,fPhiMax);
	334	return kFALSE;
	335	}
	336
	337	return kTRUE;
	338	}
	339	void AliGenPythia::AdjustWeights()
	340	{
	341	TClonesArray *PartArray = gAlice->Particles();
1578254f	342	TParticle *Part;
fe4da5cc	343	Int_t ntrack=gAlice->GetNtrack();
fe4da5cc	344	for (Int_t i=0; i<ntrack; i++) {
1578254f	345	Part= (TParticle*) PartArray->UncheckedAt(i);
1578254f	346	Part->SetWeight(Part->GetWeight()*fKineBias);
fe4da5cc	347	}
	348	}
	349
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5be1fe76	354
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