[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"

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 {
  //
  // Mass for the two D0 hypotheses
  //
  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 {
  //
  // Mass for the two D0bar hypotheses
  //
  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] = D0 invariant mass 
  // 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[2];
  Double_t mD0bar[2];
  InvMassD0(mD0);
  InvMassD0bar(mD0bar);
  Bool_t goodMass=kFALSE;
  if(TMath::Abs(mD0[0]-mD0PDG)<=cuts[0]) {goodMass=kTRUE; okD0=1;}
  if(TMath::Abs(mD0[1]-mD0PDG)<=cuts[0]) {goodMass=kTRUE; okD0=1;}
  if(TMath::Abs(mD0bar[0]-mD0PDG)<=cuts[0]) {goodMass=kTRUE; okD0bar=1;}
  if(TMath::Abs(mD0bar[1]-mD0PDG)<=cuts[0]) {goodMass=kTRUE; okD0bar=1;}
  if(!goodMass) return kFALSE;
  
  //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 rho->pipi mass for any of the pairs
  //
  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"
3244eeed	26
	27	ClassImp(AliAODRecoDecayHF4Prong)
	28
	29	//--------------------------------------------------------------------------
	30	AliAODRecoDecayHF4Prong::AliAODRecoDecayHF4Prong() :
	31	AliAODRecoDecayHF(),
3244eeed	32	fDist12toPrim(0),
721c0b8f	33	fDist3toPrim(0),
721c0b8f	34	fDist4toPrim(0)
3244eeed	35	{
	36	//
	37	// Default Constructor
	38	//
	39	}
	40	//--------------------------------------------------------------------------
	41	AliAODRecoDecayHF4Prong::AliAODRecoDecayHF4Prong(AliAODVertex *vtx2,
	42	Double_t px,Double_t py,Double_t *pz,
	43	Double_t d0,Double_t d0err,
	44	Double_t *dca, //Double_t sigvert,
721c0b8f	45	Double_t dist12,Double_t dist3,
721c0b8f	46	Double_t dist4,
3244eeed	47	Short_t charge) :
	48	AliAODRecoDecayHF(vtx2,4,charge,px,py,pz,d0,d0err),
	49	// fSigmaVert(sigvert),
	50	fDist12toPrim(dist12),
721c0b8f	51	fDist3toPrim(dist3),
721c0b8f	52	fDist4toPrim(dist4)
3244eeed	53	{
	54	//
	55	// Constructor with AliAODVertex for decay vertex
	56	//
6185d025	57	SetDCAs(6,dca);
3244eeed	58	}
	59	//--------------------------------------------------------------------------
	60	AliAODRecoDecayHF4Prong::AliAODRecoDecayHF4Prong(AliAODVertex *vtx2,
	61	Double_t d0,Double_t d0err,
	62	Double_t *dca, //Double_t sigvert,
721c0b8f	63	Double_t dist12,Double_t dist3,
721c0b8f	64	Double_t dist4,
3244eeed	65	Short_t charge) :
	66	AliAODRecoDecayHF(vtx2,4,charge,d0,d0err),
	67	//fSigmaVert(sigvert),
	68	fDist12toPrim(dist12),
721c0b8f	69	fDist3toPrim(dist3),
721c0b8f	70	fDist4toPrim(dist4)
3244eeed	71	{
	72	//
	73	// Constructor with AliAODVertex for decay vertex and without prongs momenta
	74	//
6185d025	75	SetDCAs(6,dca);
3244eeed	76	}
	77	//--------------------------------------------------------------------------
	78	AliAODRecoDecayHF4Prong::AliAODRecoDecayHF4Prong(const AliAODRecoDecayHF4Prong &source) :
	79	AliAODRecoDecayHF(source),
	80	//fSigmaVert(source.fSigmaVert),
	81	fDist12toPrim(source.fDist12toPrim),
721c0b8f	82	fDist3toPrim(source.fDist3toPrim),
721c0b8f	83	fDist4toPrim(source.fDist4toPrim)
3244eeed	84	{
	85	//
	86	// Copy constructor
	87	//
	88	}
	89	//--------------------------------------------------------------------------
	90	AliAODRecoDecayHF4Prong &AliAODRecoDecayHF4Prong::operator=(const AliAODRecoDecayHF4Prong &source)
	91	{
	92	//
	93	// assignment operator
	94	//
	95	if(&source == this) return *this;
dcb444c9	96
	97	AliAODRecoDecayHF::operator=(source);
	98
3244eeed	99	fDist12toPrim= source.fDist12toPrim;
721c0b8f	100	fDist3toPrim= source.fDist3toPrim;
721c0b8f	101	fDist4toPrim= source.fDist4toPrim;
3244eeed	102	//fSigmaVert= source.fSigmaVert;
dcb444c9	103
3244eeed	104	return *this;
	105	}
	106	//--------------------------------------------------------------------------
721c0b8f	107	void AliAODRecoDecayHF4Prong::InvMassD0(Double_t mD0[2]) const {
721c0b8f	108	//
a76e1b15	109	// Mass for the two D0 hypotheses
a76e1b15	110	//
721c0b8f	111	UInt_t pdg[4];
	112	pdg[0]=211; pdg[1]=321; pdg[2]=211; pdg[3]=211;
	113	mD0[0]=InvMass(4,pdg);
	114	pdg[1]=211; pdg[3]=321;
	115	mD0[1]=InvMass(4,pdg);
a76e1b15	116
721c0b8f	117	return;
	118	}
	119	//--------------------------------------------------------------------------
	120	void AliAODRecoDecayHF4Prong::InvMassD0bar(Double_t mD0bar[2]) const {
	121	//
a76e1b15	122	// Mass for the two D0bar hypotheses
721c0b8f	123	//
	124	UInt_t pdg[4];
	125	pdg[0]=321; pdg[1]=211; pdg[2]=211; pdg[3]=211;
	126	mD0bar[0]=InvMass(4,pdg);
	127	pdg[0]=211; pdg[2]=321;
	128	mD0bar[1]=InvMass(4,pdg);
	129
	130	return;
	131	}
	132	//--------------------------------------------------------------------------
3244eeed	133
a76e1b15	134	Bool_t AliAODRecoDecayHF4Prong::SelectD0(const Double_t *cuts,Int_t &okD0,Int_t &okD0bar) const
	135	{
	136	//
	137	// This function compares the D0 with a set of cuts:
	138	//
	139	// cuts[0] = D0 invariant mass
	140	// cuts[1] = DCA between opposite sign tracks
	141	// cuts[2] = Distance between primary and two tracks vertex fDist12toPrim
	142	// cuts[3] = Distance between primary and three tracks vertex fDist3toPrim
	143	// cuts[4] = Distance between primary and two tracks vertex fDist4toPrim
	144	// cuts[5] = Cosinus of the pointing angle
	145	// cuts[6] = Transverse momentum of the D0 candidate
	146	// cuts[7] = Mass Pi+Pi- = mass of the rho0
	147	// cuts[8] = PID cut (one K in the quadruplet)
	148	//
	149	// If candidate D0 does not pass the cuts return kFALSE
	150	//
	151
13977a79	152	okD0=0; okD0bar=0;
a76e1b15	153	Double_t mD0PDG = TDatabasePDG::Instance()->GetParticle(421)->Mass();
	154	Double_t mD0[2];
	155	Double_t mD0bar[2];
	156	InvMassD0(mD0);
	157	InvMassD0bar(mD0bar);
	158	Bool_t goodMass=kFALSE;
	159	if(TMath::Abs(mD0[0]-mD0PDG)<=cuts[0]) {goodMass=kTRUE; okD0=1;}
	160	if(TMath::Abs(mD0[1]-mD0PDG)<=cuts[0]) {goodMass=kTRUE; okD0=1;}
	161	if(TMath::Abs(mD0bar[0]-mD0PDG)<=cuts[0]) {goodMass=kTRUE; okD0bar=1;}
	162	if(TMath::Abs(mD0bar[1]-mD0PDG)<=cuts[0]) {goodMass=kTRUE; okD0bar=1;}
	163	if(!goodMass) return kFALSE;
721c0b8f	164
	165	//DCA btw opposite sign tracks
	166	if(cuts[1]>0.){
	167	if(GetDCA(0)>cuts[1]) return kFALSE;
	168	if(GetDCA(1)>cuts[1]) return kFALSE;
	169	if(GetDCA(2)>cuts[1]) return kFALSE;
	170	if(GetDCA(3)>cuts[1]) return kFALSE;
	171	if(GetDCA(4)>cuts[1]) return kFALSE;
	172	if(GetDCA(5)>cuts[1]) return kFALSE;
	173	}
3244eeed	174	//2track cuts
721c0b8f	175	if(cuts[2]>0.){
	176	if(fDist12toPrim>10.)return kFALSE;
	177	if(fDist12toPrim<cuts[2])return kFALSE;
	178	}
	179	//3track cuts
	180	if(cuts[3]>0.){
	181	if(fDist3toPrim<cuts[3])return kFALSE;
	182	}
	183	//4track cuts
	184	if(cuts[4]>0.){
	185	if(fDist4toPrim<cuts[4])return kFALSE;
	186	}
	187	if(cuts[5]>-1.1){
	188	if(CosPointingAngle()<cuts[5])return kFALSE;
	189	}
	190	if(cuts[6]>0.){
	191	if(Pt()<cuts[6])return kFALSE;
	192	}
	193	if(cuts[7]>0.){
	194	Double_t massD0[2];
	195	Double_t massD0bar[2];
	196	Bool_t good=CutRhoMass(massD0,massD0bar,cuts[0],cuts[7]);
	197	if(!good) return kFALSE;
	198	}
a76e1b15	199
721c0b8f	200	return kTRUE;
	201	}
	202	//----------------------------------------------------------------------------
a76e1b15	203	Bool_t AliAODRecoDecayHF4Prong::CutRhoMass(Double_t massD0[2],Double_t massD0bar[2],Double_t cutMass,Double_t cutRho) const
a76e1b15	204	{
721c0b8f	205	//
a76e1b15	206	// Cut on rho->pipi mass for any of the pairs
721c0b8f	207	//
	208	Bool_t isGood=kFALSE;
	209	Int_t nprongs=4;
	210	for(Int_t i=0;i<2;i++){massD0[i]=0.;massD0bar[i]=0.;}
	211	Bool_t isRho=kFALSE;
	212	Bool_t isTrue=kFALSE;
	213	Double_t mPDG=TDatabasePDG::Instance()->GetParticle(421)->Mass();
	214	Double_t mPDGRho=TDatabasePDG::Instance()->GetParticle(113)->Mass();
	215	Double_t minv01=InvMassRho(0,1);
	216	if(TMath::Abs(minv01-mPDGRho)<cutRho) isRho=kTRUE;
	217	if(isRho){
	218	UInt_t pdg1[4]={211,211,321,211};
	219	Double_t mass1=InvMass(nprongs,pdg1);
	220	if(TMath::Abs(mass1-mPDG)<cutMass) {isTrue=kTRUE;isGood=kTRUE;}
	221	if(isTrue) massD0bar[1]=mass1;
	222	isTrue=kFALSE;
	223	UInt_t pdg2[4]={211,211,211,321};
	224	Double_t mass2=InvMass(4,pdg2);
	225	if(TMath::Abs(mass2-mPDG)<cutMass) {isTrue=kTRUE;isGood=kTRUE;}
	226	if(isTrue) massD0[1]=mass2;
	227	isTrue=kFALSE;
	228	}
	229	Double_t minv03=InvMassRho(0,3);
	230	if(TMath::Abs(minv03-mPDGRho)<cutRho) isRho=kTRUE;
	231	if(isRho){
	232	UInt_t pdg1[4]={211,211,321,211};
	233	Double_t mass1=InvMass(4,pdg1);
	234	if(TMath::Abs(mass1-mPDG)<cutMass) {isTrue=kTRUE;isGood=kTRUE;}
	235	if(isTrue) massD0bar[1]=mass1;
	236	isTrue=kFALSE;
	237	UInt_t pdg2[4]={211,321,211,211};
	238	Double_t mass2=InvMass(4,pdg2);
	239	if(TMath::Abs(mass2-mPDG)<cutMass) {isTrue=kTRUE;isGood=kTRUE;}
	240	if(isTrue) massD0[0]=mass2;
	241	isTrue=kFALSE;
	242	}
	243	Double_t minv12=InvMassRho(1,2);
	244	if(TMath::Abs(minv12-mPDGRho)<cutRho) isRho=kTRUE;
	245	if(isRho){
	246	UInt_t pdg1[4]={321,211,211,211};
	247	Double_t mass1=InvMass(4,pdg1);
	248	if(TMath::Abs(mass1-mPDG)<cutMass) {isTrue=kTRUE;isGood=kTRUE;}
	249	if(isTrue) massD0bar[0]=mass1;
	250	isTrue=kFALSE;
	251	UInt_t pdg2[4]={211,211,211,321};
	252	Double_t mass2=InvMass(4,pdg2);
	253	if(TMath::Abs(mass2-mPDG)<cutMass) {isTrue=kTRUE;isGood=kTRUE;}
	254	if(isTrue) massD0[1]=mass2;
	255	isTrue=kFALSE;
	256	}
	257	Double_t minv23=InvMassRho(2,3);
	258	if(TMath::Abs(minv23-mPDGRho)<cutRho) isRho=kTRUE;
	259	if(isRho){
	260	UInt_t pdg1[4]={321,211,211,211};
	261	Double_t mass1=InvMass(4,pdg1);
	262	if(TMath::Abs(mass1-mPDG)<cutMass) {isTrue=kTRUE;isGood=kTRUE;}
	263	if(isTrue) massD0bar[0]=mass1;
	264	isTrue=kFALSE;
	265	UInt_t pdg2[4]={211,321,211,211};
	266	Double_t mass2=InvMass(4,pdg2);
	267	if(TMath::Abs(mass2-mPDG)<cutMass) {isTrue=kTRUE;isGood=kTRUE;}
	268	if(isTrue) massD0[0]=mass2;
	269	isTrue=kFALSE;
	270	}
271	return isGood;
3244eeed	272	}