[u/mrichter/AliRoot.git] / PWG3 / vertexingHF / AliAODRecoDecayHF4Prong.cxx

/**************************************************************************
 * Copyright(c) 1998-2006, 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.                  *
 **************************************************************************/

/////////////////////////////////////////////////////////////
//
// Base class for AOD reconstructed heavy-flavour 4-prong decay
//
// Authors: G.E.Bruno Giuseppe.Bruno@to.infn.it, R.Romita Rossella.Romita@ba.infn.it
/////////////////////////////////////////////////////////////

#include <TDatabasePDG.h>
#include "AliAODRecoDecayHF.h"
#include "AliAODRecoDecayHF4Prong.h"
#include "TRandom.h" // for the time being

ClassImp(AliAODRecoDecayHF4Prong)

//--------------------------------------------------------------------------
AliAODRecoDecayHF4Prong::AliAODRecoDecayHF4Prong() :
  AliAODRecoDecayHF(), 
  fDist12toPrim(0),
  fDist3toPrim(0),
  fDist4toPrim(0)
{
  //
  // Default Constructor
  //
}
//--------------------------------------------------------------------------
AliAODRecoDecayHF4Prong::AliAODRecoDecayHF4Prong(AliAODVertex *vtx2,
						 Double_t *px,Double_t *py,Double_t *pz,
						 Double_t *d0,Double_t *d0err,
						 Double_t *dca, //Double_t sigvert,
						 Double_t dist12,Double_t dist3,
						 Double_t dist4,
						 Short_t charge) :
  AliAODRecoDecayHF(vtx2,4,charge,px,py,pz,d0,d0err),
  // fSigmaVert(sigvert),
  fDist12toPrim(dist12),
  fDist3toPrim(dist3),
  fDist4toPrim(dist4)
{
  //
  // Constructor with AliAODVertex for decay vertex
  //
  SetDCAs(6,dca);
}
//--------------------------------------------------------------------------
AliAODRecoDecayHF4Prong::AliAODRecoDecayHF4Prong(AliAODVertex *vtx2,
						 Double_t *d0,Double_t *d0err,
						 Double_t *dca, //Double_t sigvert,
						 Double_t dist12,Double_t dist3, 
						 Double_t dist4, 
						 Short_t charge) :
  AliAODRecoDecayHF(vtx2,4,charge,d0,d0err),
  //fSigmaVert(sigvert),
  fDist12toPrim(dist12),
  fDist3toPrim(dist3),
  fDist4toPrim(dist4)
{
  //
  // Constructor with AliAODVertex for decay vertex and without prongs momenta
  //
  SetDCAs(6,dca);
}
//--------------------------------------------------------------------------
AliAODRecoDecayHF4Prong::AliAODRecoDecayHF4Prong(const AliAODRecoDecayHF4Prong &source) :
  AliAODRecoDecayHF(source),
  //fSigmaVert(source.fSigmaVert),
  fDist12toPrim(source.fDist12toPrim),
  fDist3toPrim(source.fDist3toPrim),
  fDist4toPrim(source.fDist4toPrim)
{
  //
  // Copy constructor
  //
}
//--------------------------------------------------------------------------
AliAODRecoDecayHF4Prong &AliAODRecoDecayHF4Prong::operator=(const AliAODRecoDecayHF4Prong &source)
{
  //
  // assignment operator
  //
  if(&source == this) return *this;

  AliAODRecoDecayHF::operator=(source);

  fDist12toPrim= source.fDist12toPrim;
  fDist3toPrim= source.fDist3toPrim;
  fDist4toPrim= source.fDist4toPrim;
  //fSigmaVert= source.fSigmaVert;

  return *this;
}
//--------------------------------------------------------------------------
void AliAODRecoDecayHF4Prong::InvMassD0(Double_t mD0[2]) const {
  //
  // the masses for D0 hypothesis
  // 
  UInt_t pdg[4];
  pdg[0]=211; pdg[1]=321; pdg[2]=211; pdg[3]=211;
  mD0[0]=InvMass(4,pdg);
  pdg[1]=211; pdg[3]=321;
  mD0[1]=InvMass(4,pdg);

  return;
}
//--------------------------------------------------------------------------
void AliAODRecoDecayHF4Prong::InvMassD0bar(Double_t mD0bar[2]) const {
  //
  // the two masses for D0bar hypothesis
  //
  UInt_t pdg[4];
  pdg[0]=321; pdg[1]=211; pdg[2]=211; pdg[3]=211;
  mD0bar[0]=InvMass(4,pdg);
  pdg[0]=211; pdg[2]=321;
  mD0bar[1]=InvMass(4,pdg);
  
  return;
}
//--------------------------------------------------------------------------
Bool_t AliAODRecoDecayHF4Prong::SelectD0(const Double_t *cuts,Int_t &okD0,Int_t &okD0bar) const {
//
// This function compares the D0 with a set of cuts:
// 
// cuts[0] = invariant mass cut 
// cuts[1] = DCA between opposite sign tracks 
// cuts[2] = Distance between primary and two tracks vertex fDist12toPrim
// cuts[3] = Distance between primary and three tracks vertex fDist3toPrim
// cuts[4] = Distance between primary and two tracks vertex fDist4toPrim
// cuts[5] = Cosinus of the pointing angle
// cuts[6] = Transverse momentum of the D0 candidate
// cuts[7] = Mass Pi+Pi- = mass of the rho0
// cuts[8] = PID cut (one K in the quadruplet)
//
// If candidate D0 does not pass the cuts return kFALSE
//

  okD0=0; okD0bar=0;
//  Double_t mD0PDG = TDatabasePDG::Instance()->GetParticle(421)->Mass();
//  Double_t mD0=InvMassD0();
//  if(TMath::Abs(mD0-mD0PDG)>cuts[0]) return kFALSE;

  //single track
  //if(TMath::Abs(PtProng(2)) < cuts[2] || TMath::Abs(Getd0Prong(2))<cuts[4])return kFALSE;//Pion2
  
  //DCA btw opposite sign tracks
  if(cuts[1]>0.){
    if(GetDCA(0)>cuts[1]) return kFALSE;
    if(GetDCA(1)>cuts[1]) return kFALSE;
    if(GetDCA(2)>cuts[1]) return kFALSE;
    if(GetDCA(3)>cuts[1]) return kFALSE;
    if(GetDCA(4)>cuts[1]) return kFALSE;
    if(GetDCA(5)>cuts[1]) return kFALSE;
  }
  //2track cuts
  if(cuts[2]>0.){
    if(fDist12toPrim>10.)return kFALSE;
    if(fDist12toPrim<cuts[2])return kFALSE;
  }
  //3track cuts
  if(cuts[3]>0.){
    if(fDist3toPrim<cuts[3])return kFALSE;
  }
  //4track cuts
  if(cuts[4]>0.){
    if(fDist4toPrim<cuts[4])return kFALSE;
  }
  if(cuts[5]>-1.1){
    if(CosPointingAngle()<cuts[5])return kFALSE;
  }
  if(cuts[6]>0.){
    if(Pt()<cuts[6])return kFALSE;
  }
  if(cuts[7]>0.){
    Double_t massD0[2];
    Double_t massD0bar[2];
    Bool_t good=CutRhoMass(massD0,massD0bar,cuts[0],cuts[7]);
    if(!good) return kFALSE;
  }

  return kTRUE;
}
//----------------------------------------------------------------------------
Bool_t AliAODRecoDecayHF4Prong::CutRhoMass(Double_t massD0[2],Double_t massD0bar[2],Double_t cutMass,Double_t cutRho) const {
  //
  // cut on the mass of rho->pipi
  //
  Bool_t isGood=kFALSE;
  Int_t nprongs=4;
  for(Int_t i=0;i<2;i++){massD0[i]=0.;massD0bar[i]=0.;}
  Bool_t isRho=kFALSE;
  Bool_t isTrue=kFALSE;
  Double_t mPDG=TDatabasePDG::Instance()->GetParticle(421)->Mass();
  Double_t mPDGRho=TDatabasePDG::Instance()->GetParticle(113)->Mass();
  Double_t minv01=InvMassRho(0,1);
  if(TMath::Abs(minv01-mPDGRho)<cutRho) isRho=kTRUE;
  if(isRho){
    UInt_t pdg1[4]={211,211,321,211};
    Double_t mass1=InvMass(nprongs,pdg1);
    if(TMath::Abs(mass1-mPDG)<cutMass) {isTrue=kTRUE;isGood=kTRUE;}
    if(isTrue) massD0bar[1]=mass1;
    isTrue=kFALSE;
    UInt_t pdg2[4]={211,211,211,321};
    Double_t mass2=InvMass(4,pdg2);
    if(TMath::Abs(mass2-mPDG)<cutMass) {isTrue=kTRUE;isGood=kTRUE;}
    if(isTrue) massD0[1]=mass2;
    isTrue=kFALSE;
  }
  Double_t minv03=InvMassRho(0,3);
  if(TMath::Abs(minv03-mPDGRho)<cutRho) isRho=kTRUE;
  if(isRho){
    UInt_t pdg1[4]={211,211,321,211};
    Double_t mass1=InvMass(4,pdg1);
    if(TMath::Abs(mass1-mPDG)<cutMass) {isTrue=kTRUE;isGood=kTRUE;}
    if(isTrue) massD0bar[1]=mass1;
    isTrue=kFALSE;
    UInt_t pdg2[4]={211,321,211,211};
    Double_t mass2=InvMass(4,pdg2);
    if(TMath::Abs(mass2-mPDG)<cutMass) {isTrue=kTRUE;isGood=kTRUE;}
    if(isTrue) massD0[0]=mass2;
    isTrue=kFALSE;
  }
  Double_t minv12=InvMassRho(1,2);
  if(TMath::Abs(minv12-mPDGRho)<cutRho) isRho=kTRUE;
  if(isRho){
    UInt_t pdg1[4]={321,211,211,211};
    Double_t mass1=InvMass(4,pdg1);
    if(TMath::Abs(mass1-mPDG)<cutMass) {isTrue=kTRUE;isGood=kTRUE;}
    if(isTrue) massD0bar[0]=mass1;
    isTrue=kFALSE;
    UInt_t pdg2[4]={211,211,211,321};
    Double_t mass2=InvMass(4,pdg2);
    if(TMath::Abs(mass2-mPDG)<cutMass) {isTrue=kTRUE;isGood=kTRUE;}
    if(isTrue) massD0[1]=mass2;
    isTrue=kFALSE;
  }
  Double_t minv23=InvMassRho(2,3);
  if(TMath::Abs(minv23-mPDGRho)<cutRho) isRho=kTRUE;
  if(isRho){
    UInt_t pdg1[4]={321,211,211,211};
    Double_t mass1=InvMass(4,pdg1);
    if(TMath::Abs(mass1-mPDG)<cutMass) {isTrue=kTRUE;isGood=kTRUE;}
    if(isTrue) massD0bar[0]=mass1;
    isTrue=kFALSE;
    UInt_t pdg2[4]={211,321,211,211};
    Double_t mass2=InvMass(4,pdg2);
    if(TMath::Abs(mass2-mPDG)<cutMass) {isTrue=kTRUE;isGood=kTRUE;}
    if(isTrue) massD0[0]=mass2;
    isTrue=kFALSE;
  }
  return isGood;
}
Commit	Line	Data
3244eeed	1	/**************************************************************************
	2	* Copyright(c) 1998-2006, 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	//
	18	// Base class for AOD reconstructed heavy-flavour 4-prong decay
	19	//
	20	// Authors: G.E.Bruno Giuseppe.Bruno@to.infn.it, R.Romita Rossella.Romita@ba.infn.it
	21	/////////////////////////////////////////////////////////////
	22
	23	#include <TDatabasePDG.h>
	24	#include "AliAODRecoDecayHF.h"
	25	#include "AliAODRecoDecayHF4Prong.h"
	26	#include "TRandom.h" // for the time being
	27
	28	ClassImp(AliAODRecoDecayHF4Prong)
	29
	30	//--------------------------------------------------------------------------
	31	AliAODRecoDecayHF4Prong::AliAODRecoDecayHF4Prong() :
	32	AliAODRecoDecayHF(),
3244eeed	33	fDist12toPrim(0),
721c0b8f	34	fDist3toPrim(0),
721c0b8f	35	fDist4toPrim(0)
3244eeed	36	{
	37	//
	38	// Default Constructor
	39	//
	40	}
	41	//--------------------------------------------------------------------------
	42	AliAODRecoDecayHF4Prong::AliAODRecoDecayHF4Prong(AliAODVertex *vtx2,
	43	Double_t px,Double_t py,Double_t *pz,
	44	Double_t d0,Double_t d0err,
	45	Double_t *dca, //Double_t sigvert,
721c0b8f	46	Double_t dist12,Double_t dist3,
721c0b8f	47	Double_t dist4,
3244eeed	48	Short_t charge) :
	49	AliAODRecoDecayHF(vtx2,4,charge,px,py,pz,d0,d0err),
	50	// fSigmaVert(sigvert),
	51	fDist12toPrim(dist12),
721c0b8f	52	fDist3toPrim(dist3),
721c0b8f	53	fDist4toPrim(dist4)
3244eeed	54	{
	55	//
	56	// Constructor with AliAODVertex for decay vertex
	57	//
6185d025	58	SetDCAs(6,dca);
3244eeed	59	}
	60	//--------------------------------------------------------------------------
	61	AliAODRecoDecayHF4Prong::AliAODRecoDecayHF4Prong(AliAODVertex *vtx2,
	62	Double_t d0,Double_t d0err,
	63	Double_t *dca, //Double_t sigvert,
721c0b8f	64	Double_t dist12,Double_t dist3,
721c0b8f	65	Double_t dist4,
3244eeed	66	Short_t charge) :
	67	AliAODRecoDecayHF(vtx2,4,charge,d0,d0err),
	68	//fSigmaVert(sigvert),
	69	fDist12toPrim(dist12),
721c0b8f	70	fDist3toPrim(dist3),
721c0b8f	71	fDist4toPrim(dist4)
3244eeed	72	{
	73	//
	74	// Constructor with AliAODVertex for decay vertex and without prongs momenta
	75	//
6185d025	76	SetDCAs(6,dca);
3244eeed	77	}
	78	//--------------------------------------------------------------------------
	79	AliAODRecoDecayHF4Prong::AliAODRecoDecayHF4Prong(const AliAODRecoDecayHF4Prong &source) :
	80	AliAODRecoDecayHF(source),
	81	//fSigmaVert(source.fSigmaVert),
	82	fDist12toPrim(source.fDist12toPrim),
721c0b8f	83	fDist3toPrim(source.fDist3toPrim),
721c0b8f	84	fDist4toPrim(source.fDist4toPrim)
3244eeed	85	{
	86	//
	87	// Copy constructor
	88	//
	89	}
	90	//--------------------------------------------------------------------------
	91	AliAODRecoDecayHF4Prong &AliAODRecoDecayHF4Prong::operator=(const AliAODRecoDecayHF4Prong &source)
	92	{
	93	//
	94	// assignment operator
	95	//
	96	if(&source == this) return *this;
dcb444c9	97
	98	AliAODRecoDecayHF::operator=(source);
	99
3244eeed	100	fDist12toPrim= source.fDist12toPrim;
721c0b8f	101	fDist3toPrim= source.fDist3toPrim;
721c0b8f	102	fDist4toPrim= source.fDist4toPrim;
3244eeed	103	//fSigmaVert= source.fSigmaVert;
dcb444c9	104
3244eeed	105	return *this;
	106	}
	107	//--------------------------------------------------------------------------
721c0b8f	108	void AliAODRecoDecayHF4Prong::InvMassD0(Double_t mD0[2]) const {
	109	//
	110	// the masses for D0 hypothesis
	111	//
	112	UInt_t pdg[4];
	113	pdg[0]=211; pdg[1]=321; pdg[2]=211; pdg[3]=211;
	114	mD0[0]=InvMass(4,pdg);
	115	pdg[1]=211; pdg[3]=321;
	116	mD0[1]=InvMass(4,pdg);
	117
	118	return;
	119	}
	120	//--------------------------------------------------------------------------
	121	void AliAODRecoDecayHF4Prong::InvMassD0bar(Double_t mD0bar[2]) const {
	122	//
	123	// the two masses for D0bar hypothesis
	124	//
	125	UInt_t pdg[4];
	126	pdg[0]=321; pdg[1]=211; pdg[2]=211; pdg[3]=211;
	127	mD0bar[0]=InvMass(4,pdg);
	128	pdg[0]=211; pdg[2]=321;
	129	mD0bar[1]=InvMass(4,pdg);
	130
	131	return;
	132	}
	133	//--------------------------------------------------------------------------
	134	Bool_t AliAODRecoDecayHF4Prong::SelectD0(const Double_t *cuts,Int_t &okD0,Int_t &okD0bar) const {
3244eeed	135	//
	136	// This function compares the D0 with a set of cuts:
	137	//
721c0b8f	138	// cuts[0] = invariant mass cut
	139	// cuts[1] = DCA between opposite sign tracks
	140	// cuts[2] = Distance between primary and two tracks vertex fDist12toPrim
	141	// cuts[3] = Distance between primary and three tracks vertex fDist3toPrim
	142	// cuts[4] = Distance between primary and two tracks vertex fDist4toPrim
	143	// cuts[5] = Cosinus of the pointing angle
	144	// cuts[6] = Transverse momentum of the D0 candidate
	145	// cuts[7] = Mass Pi+Pi- = mass of the rho0
	146	// cuts[8] = PID cut (one K in the quadruplet)
3244eeed	147	//
	148	// If candidate D0 does not pass the cuts return kFALSE
	149	//
	150
13977a79	151	okD0=0; okD0bar=0;
721c0b8f	152	// Double_t mD0PDG = TDatabasePDG::Instance()->GetParticle(421)->Mass();
	153	// Double_t mD0=InvMassD0();
	154	// if(TMath::Abs(mD0-mD0PDG)>cuts[0]) return kFALSE;
3244eeed	155
	156	//single track
	157	//if(TMath::Abs(PtProng(2)) < cuts[2] \|\| TMath::Abs(Getd0Prong(2))<cuts[4])return kFALSE;//Pion2
721c0b8f	158
	159	//DCA btw opposite sign tracks
	160	if(cuts[1]>0.){
	161	if(GetDCA(0)>cuts[1]) return kFALSE;
	162	if(GetDCA(1)>cuts[1]) return kFALSE;
	163	if(GetDCA(2)>cuts[1]) return kFALSE;
	164	if(GetDCA(3)>cuts[1]) return kFALSE;
	165	if(GetDCA(4)>cuts[1]) return kFALSE;
	166	if(GetDCA(5)>cuts[1]) return kFALSE;
	167	}
3244eeed	168	//2track cuts
721c0b8f	169	if(cuts[2]>0.){
	170	if(fDist12toPrim>10.)return kFALSE;
	171	if(fDist12toPrim<cuts[2])return kFALSE;
	172	}
	173	//3track cuts
	174	if(cuts[3]>0.){
	175	if(fDist3toPrim<cuts[3])return kFALSE;
	176	}
	177	//4track cuts
	178	if(cuts[4]>0.){
	179	if(fDist4toPrim<cuts[4])return kFALSE;
	180	}
	181	if(cuts[5]>-1.1){
	182	if(CosPointingAngle()<cuts[5])return kFALSE;
	183	}
	184	if(cuts[6]>0.){
	185	if(Pt()<cuts[6])return kFALSE;
	186	}
	187	if(cuts[7]>0.){
	188	Double_t massD0[2];
	189	Double_t massD0bar[2];
	190	Bool_t good=CutRhoMass(massD0,massD0bar,cuts[0],cuts[7]);
	191	if(!good) return kFALSE;
	192	}
3244eeed	193
721c0b8f	194	return kTRUE;
	195	}
	196	//----------------------------------------------------------------------------
	197	Bool_t AliAODRecoDecayHF4Prong::CutRhoMass(Double_t massD0[2],Double_t massD0bar[2],Double_t cutMass,Double_t cutRho) const {
	198	//
	199	// cut on the mass of rho->pipi
	200	//
	201	Bool_t isGood=kFALSE;
	202	Int_t nprongs=4;
	203	for(Int_t i=0;i<2;i++){massD0[i]=0.;massD0bar[i]=0.;}
	204	Bool_t isRho=kFALSE;
	205	Bool_t isTrue=kFALSE;
	206	Double_t mPDG=TDatabasePDG::Instance()->GetParticle(421)->Mass();
	207	Double_t mPDGRho=TDatabasePDG::Instance()->GetParticle(113)->Mass();
	208	Double_t minv01=InvMassRho(0,1);
	209	if(TMath::Abs(minv01-mPDGRho)<cutRho) isRho=kTRUE;
	210	if(isRho){
	211	UInt_t pdg1[4]={211,211,321,211};
	212	Double_t mass1=InvMass(nprongs,pdg1);
	213	if(TMath::Abs(mass1-mPDG)<cutMass) {isTrue=kTRUE;isGood=kTRUE;}
	214	if(isTrue) massD0bar[1]=mass1;
	215	isTrue=kFALSE;
	216	UInt_t pdg2[4]={211,211,211,321};
	217	Double_t mass2=InvMass(4,pdg2);
	218	if(TMath::Abs(mass2-mPDG)<cutMass) {isTrue=kTRUE;isGood=kTRUE;}
	219	if(isTrue) massD0[1]=mass2;
	220	isTrue=kFALSE;
	221	}
	222	Double_t minv03=InvMassRho(0,3);
	223	if(TMath::Abs(minv03-mPDGRho)<cutRho) isRho=kTRUE;
	224	if(isRho){
	225	UInt_t pdg1[4]={211,211,321,211};
	226	Double_t mass1=InvMass(4,pdg1);
	227	if(TMath::Abs(mass1-mPDG)<cutMass) {isTrue=kTRUE;isGood=kTRUE;}
	228	if(isTrue) massD0bar[1]=mass1;
	229	isTrue=kFALSE;
	230	UInt_t pdg2[4]={211,321,211,211};
	231	Double_t mass2=InvMass(4,pdg2);
	232	if(TMath::Abs(mass2-mPDG)<cutMass) {isTrue=kTRUE;isGood=kTRUE;}
	233	if(isTrue) massD0[0]=mass2;
	234	isTrue=kFALSE;
	235	}
	236	Double_t minv12=InvMassRho(1,2);
	237	if(TMath::Abs(minv12-mPDGRho)<cutRho) isRho=kTRUE;
	238	if(isRho){
	239	UInt_t pdg1[4]={321,211,211,211};
	240	Double_t mass1=InvMass(4,pdg1);
	241	if(TMath::Abs(mass1-mPDG)<cutMass) {isTrue=kTRUE;isGood=kTRUE;}
	242	if(isTrue) massD0bar[0]=mass1;
	243	isTrue=kFALSE;
	244	UInt_t pdg2[4]={211,211,211,321};
	245	Double_t mass2=InvMass(4,pdg2);
	246	if(TMath::Abs(mass2-mPDG)<cutMass) {isTrue=kTRUE;isGood=kTRUE;}
	247	if(isTrue) massD0[1]=mass2;
	248	isTrue=kFALSE;
	249	}
	250	Double_t minv23=InvMassRho(2,3);
	251	if(TMath::Abs(minv23-mPDGRho)<cutRho) isRho=kTRUE;
	252	if(isRho){
	253	UInt_t pdg1[4]={321,211,211,211};
	254	Double_t mass1=InvMass(4,pdg1);
	255	if(TMath::Abs(mass1-mPDG)<cutMass) {isTrue=kTRUE;isGood=kTRUE;}
	256	if(isTrue) massD0bar[0]=mass1;
	257	isTrue=kFALSE;
258	UInt_t pdg2[4]={211,321,211,211};
259	Double_t mass2=InvMass(4,pdg2);
260	if(TMath::Abs(mass2-mPDG)<cutMass) {isTrue=kTRUE;isGood=kTRUE;}
261	if(isTrue) massD0[0]=mass2;
262	isTrue=kFALSE;
263	}
264	return isGood;
3244eeed	265	}