[u/mrichter/AliRoot.git] / EVGEN / AliGenHijing.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.                  *
 **************************************************************************/

/*
$Log$
Revision 1.2  2000/06/15 14:15:05  morsch
Add possibility for heavy flavor selection: charm and beauty.

Revision 1.1  2000/06/09 20:47:27  morsch
AliGenerator interface class to HIJING using THijing (test version)

*/

#include "AliGenHijing.h"
#include "AliGenHijingEventHeader.h"
#include "AliRun.h"

#include <TArrayI.h>
#include <TParticle.h>
#include <THijing.h>

 ClassImp(AliGenHijing)

AliGenHijing::AliGenHijing()
                 :AliGenerator()
{
// Constructor
}

AliGenHijing::AliGenHijing(Int_t npart)
                 :AliGenerator(npart)
{
// Default PbPb collisions at 5. 5 TeV
//
    SetEnergyCMS();
    SetImpactParameterRange();
    SetTarget();
    SetProjectile();
    fKeep=0;
    fQuench=1;
    fShadowing=1;
    fTrigger=0;
    fDecaysOff=1;
    fEvaluate=0;
    fSelectAll=0;
    fFlavor=0;
}

AliGenHijing::AliGenHijing(const AliGenHijing & Hijing)
{
// copy constructor
}


AliGenHijing::~AliGenHijing()
{
// Destructor
}

void AliGenHijing::Init()
{
// Initialisation
    fFrame.Resize(8);
    fTarget.Resize(8);
    fProjectile.Resize(8);
    
    SetMC(new THijing(fEnergyCMS, fFrame, fProjectile, fTarget, 
		      fAProjectile, fZProjectile, fATarget, fZTarget, 
		      fMinImpactParam, fMaxImpactParam));

    fHijing=(THijing*) fgMCEvGen;
    fHijing->Initialize();
    fHijing->SetIHPR2(3,  fTrigger);
    fHijing->SetIHPR2(4,  fQuench);
    fHijing->SetIHPR2(6,  fShadowing);
    fHijing->SetIHPR2(12, fDecaysOff);    
    fHijing->SetIHPR2(21, fKeep);
//
    if (fEvaluate) EvaluateCrossSections();
}

void AliGenHijing::Generate()
{
// Generate one event

    Float_t polar[3] =   {0,0,0};
    Float_t origin[3]=   {0,0,0};
    Float_t origin0[3]=  {0,0,0};
    Float_t p[3], random[6];
    Float_t tof;

    static TClonesArray *particles;
//  converts from mm/c to s
    const Float_t kconv=0.001/2.999792458e8;
//
    Int_t nt=0;
    Int_t jev=0;
    Int_t j, kf, ks, imo;
    kf=0;
    
    if(!particles) particles=new TClonesArray("TParticle",10000);
    
    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]));
//	    fHijing->SetMSTP(151,0);
	}
    } else if (fVertexSmear==perTrack) {
//	fHijing->SetMSTP(151,0);
	for (j=0;j<3;j++) {
//	    fHijing->SetPARP(151+j, fOsigma[j]*10.);
	}
    }
    while(1)
    {

	fHijing->GenerateEvent();
	fTrials++;
	fHijing->ImportParticles(particles,"All");
	Int_t np = particles->GetEntriesFast();
	printf("\n **************************************************%d\n",np);
	Int_t nc=0;
	if (np == 0 ) continue;
	Int_t i;
	Int_t * newPos = new Int_t[np];
	for (i = 0; i<np; i++) *(newPos+i)=i;
	
	for (i = 0; i<np; i++) {
	    TParticle *  iparticle       = (TParticle *) particles->At(i);

	    Bool_t  hasMother            =  (iparticle->GetFirstMother()   >=0);
	    Bool_t  hasDaughter          =  (iparticle->GetFirstDaughter() >=0);
	    Bool_t  selected             =  kTRUE;
	    Bool_t  hasSelectedDaughters =  kFALSE;


	    kf        = iparticle->GetPdgCode();
	    if (!fSelectAll) selected = KinematicSelection(iparticle)&&SelectFlavor(kf);
	    if (hasDaughter && !selected) hasSelectedDaughters = DaughtersSelection(iparticle, particles);
//
// Put particle on the stack if it is either selected or it is the mother of at least one seleted particle
//

	    if (selected || hasSelectedDaughters) {
		nc++;
		ks        = iparticle->GetStatusCode();
		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;
		tof=kconv*iparticle->T();
		imo=-1;
		if (hasMother) {
		    imo=iparticle->GetFirstMother();
		    imo=*(newPos+imo);
		}
		
//		printf("\n selected iparent %d %d %d \n",i, kf, imo);
		if (hasDaughter) {
		    gAlice->SetTrack(0,imo,kf,p,origin,polar,
				     tof,"Primary",nt);
		} else {
		    gAlice->SetTrack(fTrackIt,imo,kf,p,origin,polar,
				     tof,"Secondary",nt);
		}
		*(newPos+i)=nt;
	    } // selected
	} // particle loop 
	delete newPos;
	printf("\n I've put %i particles on the stack \n",nc);
	if (nc > 0) {
	    jev+=nc;
	    if (jev >= fNpart || fNpart == -1) {
		fKineBias=Float_t(fNpart)/Float_t(fTrials);
		printf("\n Trials: %i %i %i\n",fTrials, fNpart, jev);
		break;
	    }
	}
    } // event loop
}

Bool_t AliGenHijing::KinematicSelection(TParticle *particle)
{
// Perform kinematic selection
    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)));
    if (phi > fPhiMax || phi < fPhiMin)
    {
//	printf("\n failed phi cut %f %f %f \n",phi,fPhiMin,fPhiMax);
	return kFALSE;
    }

    return kTRUE;
}

void AliGenHijing::KeepFullEvent()
{
    fKeep=1;
}

void AliGenHijing::EvaluateCrossSections()
{
//     Glauber Calculation of geometrical x-section
//
    Float_t xTot=0.;          // barn
    Float_t xTotHard=0.;      // barn 
    Float_t xPart=0.;         // barn
    Float_t xPartHard=0.;     // barn 
    Float_t sigmaHard=0.1;    // mbarn
    Float_t bMin=0.;
    Float_t bMax=fHijing->GetHIPR1(34)+fHijing->GetHIPR1(35);
    const Float_t kdib=0.2;
    Int_t   kMax=Int_t((bMax-bMin)/kdib)+1;


    printf("\n Projectile Radius (fm): %f \n",fHijing->GetHIPR1(34));
    printf("\n Target     Radius (fm): %f \n",fHijing->GetHIPR1(35));    
    Int_t i;
    Float_t oldvalue=0.;
    
    for (i=0; i<kMax; i++)
    {
	Float_t xb=bMin+i*kdib;
	Float_t ov;
	ov=fHijing->Profile(xb);
	Float_t gb =  2.*0.01*fHijing->GetHIPR1(40)*kdib*xb*(1.-TMath::Exp(-fHijing->GetHINT1(12)*ov));
	Float_t gbh = 2.*0.01*fHijing->GetHIPR1(40)*kdib*xb*sigmaHard*ov;
	xTot+=gb;
	xTotHard+=gbh;
	if (xb > fMinImpactParam && xb < fMaxImpactParam)
	{
	    xPart+=gb;
	    xPartHard+=gbh;
	}
	
	if ((xTot-oldvalue)/oldvalue<0.0001) break;
	oldvalue=xTot;
	printf("\n Total cross section (barn): %d %f %f \n",i, xb, xTot);
	printf("\n Hard  cross section (barn): %d %f %f \n\n",i, xb, xTotHard);
    }
    printf("\n Total cross section (barn): %f \n",xTot);
    printf("\n Hard  cross section (barn): %f \n \n",xTotHard);
    printf("\n Partial       cross section (barn): %f %f \n",xPart, xPart/xTot*100.);
    printf("\n Partial  hard cross section (barn): %f %f \n",xPartHard, xPartHard/xTotHard*100.);
}

Bool_t AliGenHijing::DaughtersSelection(TParticle* iparticle, TClonesArray* particles)
{
//
// Looks recursively if one of the daughters has been selected
//
//    printf("\n Consider daughters %d:",iparticle->GetPdgCode());
    Int_t imin=-1;
    Int_t imax=-1;
    Int_t i;
    Bool_t hasDaughters= (iparticle->GetFirstDaughter() >=0);
    Bool_t selected=kFALSE;
    if (hasDaughters) {
	imin=iparticle->GetFirstDaughter();
	imax=iparticle->GetLastDaughter();       
	for (i=imin; i<= imax; i++){
	    TParticle *  jparticle       = (TParticle *) particles->At(i);	
	    Int_t ip=jparticle->GetPdgCode();
	    if (KinematicSelection(jparticle)&&SelectFlavor(ip)) {selected=kTRUE; break;}
	    if (DaughtersSelection(jparticle, particles)) {selected=kTRUE; break; }
	}
    } else {
	return kFALSE;
    }

    return selected;
}


Bool_t AliGenHijing::SelectFlavor(Int_t pid)
{
// Select flavor of particle
// 0: all
// 4: charm and beauty
// 5: beauty
    if (fFlavor == 0) return kTRUE;
    
    Int_t ifl=TMath::Abs(pid/100);
    if (ifl > 10) ifl/=10;
    return ((fFlavor==4 && (ifl==4 || ifl==5))  || 
	    (fFlavor==5 &&  ifl==5));

}

void AliGenHijing::MakeHeader()
{
// Builds the event header, to be called after each event
    AliGenHijingEventHeader* header = new AliGenHijingEventHeader("Hijing");
//    header->SetDate(date);
//    header->SetRunNumber(run);
//    header->SetEventNumber(event);
    header->SetNProduced(fHijing->GetNATT());
    header->SetImpactParameter(fHijing->GetHINT1(19));
    header->SetTotalEnergy(fHijing->GetEATT());
    header->SetHardScatters(fHijing->GetJATT());
    header->SetParticipants(fHijing->GetNP(), fHijing->GetNT());
    header->SetCollisions(fHijing->GetN0(),
			  fHijing->GetN01(),
			  fHijing->GetN10(),
			  fHijing->GetN11());
}

AliGenHijing& AliGenHijing::operator=(const  AliGenHijing& rhs)
{
// Assignment operator
    return *this;
}
Commit	Line	Data
110410f9	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	/*
	17	$Log$
3b8bd63f	18	Revision 1.2 2000/06/15 14:15:05 morsch
	19	Add possibility for heavy flavor selection: charm and beauty.
	20
eb342d2d	21	Revision 1.1 2000/06/09 20:47:27 morsch
	22	AliGenerator interface class to HIJING using THijing (test version)
	23
110410f9	24	*/
	25
	26	#include "AliGenHijing.h"
3b8bd63f	27	#include "AliGenHijingEventHeader.h"
110410f9	28	#include "AliRun.h"
	29
	30	#include <TArrayI.h>
	31	#include <TParticle.h>
	32	#include <THijing.h>
	33
	34	ClassImp(AliGenHijing)
	35
	36	AliGenHijing::AliGenHijing()
	37	:AliGenerator()
	38	{
	39	// Constructor
	40	}
	41
	42	AliGenHijing::AliGenHijing(Int_t npart)
	43	:AliGenerator(npart)
	44	{
	45	// Default PbPb collisions at 5. 5 TeV
	46	//
	47	SetEnergyCMS();
	48	SetImpactParameterRange();
	49	SetTarget();
	50	SetProjectile();
	51	fKeep=0;
	52	fQuench=1;
	53	fShadowing=1;
	54	fTrigger=0;
	55	fDecaysOff=1;
	56	fEvaluate=0;
	57	fSelectAll=0;
eb342d2d	58	fFlavor=0;
110410f9	59	}
	60
	61	AliGenHijing::AliGenHijing(const AliGenHijing & Hijing)
	62	{
	63	// copy constructor
	64	}
	65
	66
	67	AliGenHijing::~AliGenHijing()
	68	{
	69	// Destructor
	70	}
	71
	72	void AliGenHijing::Init()
	73	{
	74	// Initialisation
3b8bd63f	75	fFrame.Resize(8);
	76	fTarget.Resize(8);
	77	fProjectile.Resize(8);
	78
110410f9	79	SetMC(new THijing(fEnergyCMS, fFrame, fProjectile, fTarget,
	80	fAProjectile, fZProjectile, fATarget, fZTarget,
	81	fMinImpactParam, fMaxImpactParam));
	82
	83	fHijing=(THijing*) fgMCEvGen;
	84	fHijing->Initialize();
	85	fHijing->SetIHPR2(3, fTrigger);
	86	fHijing->SetIHPR2(4, fQuench);
	87	fHijing->SetIHPR2(6, fShadowing);
	88	fHijing->SetIHPR2(12, fDecaysOff);
	89	fHijing->SetIHPR2(21, fKeep);
	90	//
	91	if (fEvaluate) EvaluateCrossSections();
	92	}
	93
	94	void AliGenHijing::Generate()
	95	{
	96	// Generate one event
	97
	98	Float_t polar[3] = {0,0,0};
	99	Float_t origin[3]= {0,0,0};
	100	Float_t origin0[3]= {0,0,0};
	101	Float_t p[3], random[6];
	102	Float_t tof;
	103
	104	static TClonesArray *particles;
	105	// converts from mm/c to s
	106	const Float_t kconv=0.001/2.999792458e8;
	107	//
	108	Int_t nt=0;
	109	Int_t jev=0;
	110	Int_t j, kf, ks, imo;
eb342d2d	111	kf=0;
eb342d2d	112
110410f9	113	if(!particles) particles=new TClonesArray("TParticle",10000);
	114
	115	fTrials=0;
	116	for (j=0;j<3;j++) origin0[j]=fOrigin[j];
	117	if(fVertexSmear==perEvent) {
	118	gMC->Rndm(random,6);
	119	for (j=0;j<3;j++) {
	120	origin0[j]+=fOsigma[j]TMath::Cos(2random[2j]TMath::Pi())*
	121	TMath::Sqrt(-2TMath::Log(random[2j+1]));
	122	// fHijing->SetMSTP(151,0);
	123	}
	124	} else if (fVertexSmear==perTrack) {
	125	// fHijing->SetMSTP(151,0);
	126	for (j=0;j<3;j++) {
	127	// fHijing->SetPARP(151+j, fOsigma[j]*10.);
	128	}
	129	}
	130	while(1)
	131	{
	132
	133	fHijing->GenerateEvent();
	134	fTrials++;
	135	fHijing->ImportParticles(particles,"All");
	136	Int_t np = particles->GetEntriesFast();
	137	printf("\n **************************************************%d\n",np);
	138	Int_t nc=0;
	139	if (np == 0 ) continue;
	140	Int_t i;
	141	Int_t * newPos = new Int_t[np];
eb342d2d	142	for (i = 0; i<np; i++) *(newPos+i)=i;
110410f9	143
eb342d2d	144	for (i = 0; i<np; i++) {
110410f9	145	TParticle * iparticle = (TParticle *) particles->At(i);
	146
	147	Bool_t hasMother = (iparticle->GetFirstMother() >=0);
	148	Bool_t hasDaughter = (iparticle->GetFirstDaughter() >=0);
	149	Bool_t selected = kTRUE;
	150	Bool_t hasSelectedDaughters = kFALSE;
	151
110410f9	152
eb342d2d	153	kf = iparticle->GetPdgCode();
eb342d2d	154	if (!fSelectAll) selected = KinematicSelection(iparticle)&&SelectFlavor(kf);
110410f9	155	if (hasDaughter && !selected) hasSelectedDaughters = DaughtersSelection(iparticle, particles);
	156	//
	157	// Put particle on the stack if it is either selected or it is the mother of at least one seleted particle
	158	//
	159
	160	if (selected \|\| hasSelectedDaughters) {
	161	nc++;
	162	ks = iparticle->GetStatusCode();
	163	p[0]=iparticle->Px();
	164	p[1]=iparticle->Py();
	165	p[2]=iparticle->Pz();
	166	origin[0]=origin0[0]+iparticle->Vx()/10;
	167	origin[1]=origin0[1]+iparticle->Vy()/10;
	168	origin[2]=origin0[2]+iparticle->Vz()/10;
	169	tof=kconv*iparticle->T();
	170	imo=-1;
	171	if (hasMother) {
	172	imo=iparticle->GetFirstMother();
	173	imo=*(newPos+imo);
	174	}
	175
	176	// printf("\n selected iparent %d %d %d \n",i, kf, imo);
	177	if (hasDaughter) {
	178	gAlice->SetTrack(0,imo,kf,p,origin,polar,
	179	tof,"Primary",nt);
	180	} else {
	181	gAlice->SetTrack(fTrackIt,imo,kf,p,origin,polar,
	182	tof,"Secondary",nt);
	183	}
	184	*(newPos+i)=nt;
	185	} // selected
	186	} // particle loop
	187	delete newPos;
	188	printf("\n I've put %i particles on the stack \n",nc);
	189	if (nc > 0) {
	190	jev+=nc;
	191	if (jev >= fNpart \|\| fNpart == -1) {
	192	fKineBias=Float_t(fNpart)/Float_t(fTrials);
	193	printf("\n Trials: %i %i %i\n",fTrials, fNpart, jev);
	194	break;
	195	}
	196	}
	197	} // event loop
	198	}
	199
	200	Bool_t AliGenHijing::KinematicSelection(TParticle *particle)
	201	{
	202	// Perform kinematic selection
	203	Float_t px=particle->Px();
	204	Float_t py=particle->Py();
	205	Float_t pz=particle->Pz();
	206	Float_t e=particle->Energy();
	207
	208	//
	209	// transverse momentum cut
	210	Float_t pt=TMath::Sqrt(pxpx+pypy);
	211	if (pt > fPtMax \|\| pt < fPtMin)
	212	{
	213	// printf("\n failed pt cut %f %f %f \n",pt,fPtMin,fPtMax);
	214	return kFALSE;
	215	}
	216	//
	217	// momentum cut
	218	Float_t p=TMath::Sqrt(pxpx+pypy+pz*pz);
219	if (p > fPMax \|\| p < fPMin)
220	{
221	// printf("\n failed p cut %f %f %f \n",p,fPMin,fPMax);
222	return kFALSE;
223	}
224
225	//
226	// theta cut
227	Float_t theta = Float_t(TMath::ATan2(Double_t(pt),Double_t(pz)));
228	if (theta > fThetaMax \|\| theta < fThetaMin)
229	{
230
231	// printf("\n failed theta cut %f %f %f \n",theta,fThetaMin,fThetaMax);
232	return kFALSE;
233	}
234
235	//
236	// rapidity cut
237	Float_t y = 0.5*TMath::Log((e+pz)/(e-pz));
238	if (y > fYMax \|\| y < fYMin)
239	{
240	// printf("\n failed y cut %f %f %f \n",y,fYMin,fYMax);
241	return kFALSE;
242	}
243
244	//
245	// phi cut
246	Float_t phi=Float_t(TMath::ATan2(Double_t(py),Double_t(px)));
247	if (phi > fPhiMax \|\| phi < fPhiMin)
248	{
249	// printf("\n failed phi cut %f %f %f \n",phi,fPhiMin,fPhiMax);
250	return kFALSE;
251	}
252
253	return kTRUE;
254	}
255
256	void AliGenHijing::KeepFullEvent()
257	{
258	fKeep=1;
259	}
260
261	void AliGenHijing::EvaluateCrossSections()
262	{
263	// Glauber Calculation of geometrical x-section
264	//
265	Float_t xTot=0.; // barn
266	Float_t xTotHard=0.; // barn
267	Float_t xPart=0.; // barn
268	Float_t xPartHard=0.; // barn
269	Float_t sigmaHard=0.1; // mbarn
270	Float_t bMin=0.;
271	Float_t bMax=fHijing->GetHIPR1(34)+fHijing->GetHIPR1(35);
272	const Float_t kdib=0.2;
273	Int_t kMax=Int_t((bMax-bMin)/kdib)+1;
274
275
276	printf("\n Projectile Radius (fm): %f \n",fHijing->GetHIPR1(34));
277	printf("\n Target Radius (fm): %f \n",fHijing->GetHIPR1(35));
278	Int_t i;
279	Float_t oldvalue=0.;
280
281	for (i=0; i<kMax; i++)
282	{
283	Float_t xb=bMin+i*kdib;
284	Float_t ov;
285	ov=fHijing->Profile(xb);
286	Float_t gb = 2.0.01fHijing->GetHIPR1(40)kdibxb(1.-TMath::Exp(-fHijing->GetHINT1(12)ov));
287	Float_t gbh = 2.0.01fHijing->GetHIPR1(40)kdibxbsigmaHardov;
288	xTot+=gb;
289	xTotHard+=gbh;
290	if (xb > fMinImpactParam && xb < fMaxImpactParam)
291	{
292	xPart+=gb;
293	xPartHard+=gbh;
294	}
295
296	if ((xTot-oldvalue)/oldvalue<0.0001) break;
297	oldvalue=xTot;
298	printf("\n Total cross section (barn): %d %f %f \n",i, xb, xTot);
299	printf("\n Hard cross section (barn): %d %f %f \n\n",i, xb, xTotHard);
300	}
301	printf("\n Total cross section (barn): %f \n",xTot);
302	printf("\n Hard cross section (barn): %f \n \n",xTotHard);
303	printf("\n Partial cross section (barn): %f %f \n",xPart, xPart/xTot*100.);
304	printf("\n Partial hard cross section (barn): %f %f \n",xPartHard, xPartHard/xTotHard*100.);
305	}
306
307	Bool_t AliGenHijing::DaughtersSelection(TParticle* iparticle, TClonesArray* particles)
308	{
309	//
310	// Looks recursively if one of the daughters has been selected
311	//
312	// printf("\n Consider daughters %d:",iparticle->GetPdgCode());
313	Int_t imin=-1;
314	Int_t imax=-1;
315	Int_t i;
316	Bool_t hasDaughters= (iparticle->GetFirstDaughter() >=0);
317	Bool_t selected=kFALSE;
318	if (hasDaughters) {
319	imin=iparticle->GetFirstDaughter();
320	imax=iparticle->GetLastDaughter();
110410f9	321	for (i=imin; i<= imax; i++){
110410f9	322	TParticle * jparticle = (TParticle *) particles->At(i);
eb342d2d	323	Int_t ip=jparticle->GetPdgCode();
eb342d2d	324	if (KinematicSelection(jparticle)&&SelectFlavor(ip)) {selected=kTRUE; break;}
110410f9	325	if (DaughtersSelection(jparticle, particles)) {selected=kTRUE; break; }
	326	}
	327	} else {
	328	return kFALSE;
	329	}
	330
	331	return selected;
	332	}
	333
	334
eb342d2d	335	Bool_t AliGenHijing::SelectFlavor(Int_t pid)
	336	{
	337	// Select flavor of particle
	338	// 0: all
	339	// 4: charm and beauty
	340	// 5: beauty
	341	if (fFlavor == 0) return kTRUE;
	342
	343	Int_t ifl=TMath::Abs(pid/100);
	344	if (ifl > 10) ifl/=10;
	345	return ((fFlavor==4 && (ifl==4 \|\| ifl==5)) \|\|
	346	(fFlavor==5 && ifl==5));
	347
	348	}
110410f9	349
3b8bd63f	350	void AliGenHijing::MakeHeader()
	351	{
	352	// Builds the event header, to be called after each event
	353	AliGenHijingEventHeader* header = new AliGenHijingEventHeader("Hijing");
	354	// header->SetDate(date);
	355	// header->SetRunNumber(run);
	356	// header->SetEventNumber(event);
	357	header->SetNProduced(fHijing->GetNATT());
	358	header->SetImpactParameter(fHijing->GetHINT1(19));
	359	header->SetTotalEnergy(fHijing->GetEATT());
	360	header->SetHardScatters(fHijing->GetJATT());
	361	header->SetParticipants(fHijing->GetNP(), fHijing->GetNT());
	362	header->SetCollisions(fHijing->GetN0(),
	363	fHijing->GetN01(),
	364	fHijing->GetN10(),
	365	fHijing->GetN11());
	366	}
	367
110410f9	368	AliGenHijing& AliGenHijing::operator=(const AliGenHijing& rhs)
	369	{
	370	// Assignment operator
	371	return *this;
	372	}