[u/mrichter/AliRoot.git] / PWG3 / AliAODRecoDecayHF3Prong.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 3-prong decay
//
// Author: E.Bruna bruna@to.infn.it, F.Prino prino@to.infn.it
/////////////////////////////////////////////////////////////

#include <TDatabasePDG.h>
#include "AliAODRecoDecayHF.h"
#include "AliAODRecoDecayHF3Prong.h"

ClassImp(AliAODRecoDecayHF3Prong)

//--------------------------------------------------------------------------
AliAODRecoDecayHF3Prong::AliAODRecoDecayHF3Prong() :
  AliAODRecoDecayHF(), 
  fSigmaVert(0),
  fDist12toPrim(0),
  fDist23toPrim(0)
{
  //
  // Default Constructor
  //
}
//--------------------------------------------------------------------------
AliAODRecoDecayHF3Prong::AliAODRecoDecayHF3Prong(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 dist23,Short_t charge) :
  AliAODRecoDecayHF(vtx2,3,charge,px,py,pz,d0,d0err),
  fSigmaVert(sigvert),
  fDist12toPrim(dist12),
  fDist23toPrim(dist23)
{
  //
  // Constructor with AliAODVertex for decay vertex
  //
  Double_t dcafloat[3];
  for(Int_t i=0;i<3;i++)dcafloat[i]=dca[i];
  SetDCAs(3,dcafloat);
}
//--------------------------------------------------------------------------
AliAODRecoDecayHF3Prong::AliAODRecoDecayHF3Prong(AliAODVertex *vtx2,
						 Double_t *d0,Double_t *d0err,
						 Double_t *dca, Double_t sigvert,
						 Double_t dist12,Double_t dist23, Short_t charge) :
  AliAODRecoDecayHF(vtx2,3,charge,d0,d0err),
  fSigmaVert(sigvert),
  fDist12toPrim(dist12),
  fDist23toPrim(dist23)
{
  //
  // Constructor with AliAODVertex for decay vertex and without prongs momenta
  //
  Double_t dcafloat[3];
  for(Int_t i=0;i<3;i++)dcafloat[i]=dca[i];
  SetDCAs(3,dcafloat);
}
//--------------------------------------------------------------------------
AliAODRecoDecayHF3Prong::AliAODRecoDecayHF3Prong(const AliAODRecoDecayHF3Prong &source) :
  AliAODRecoDecayHF(source),
  fSigmaVert(source.fSigmaVert),
  fDist12toPrim(source.fDist12toPrim),
  fDist23toPrim(source.fDist23toPrim)
{
  //
  // Copy constructor
  //
}
//--------------------------------------------------------------------------
AliAODRecoDecayHF3Prong &AliAODRecoDecayHF3Prong::operator=(const AliAODRecoDecayHF3Prong &source)
{
  //
  // assignment operator
  //
  if(&source == this) return *this;
  fOwnPrimaryVtx = source.fOwnPrimaryVtx;
  fSecondaryVtx = source.fSecondaryVtx;
  fCharge = source.fCharge;
  fNProngs = source.fNProngs;
  fNDCA = source.fNDCA;
  fNPID = source.fNPID;
  fEventNumber = source.fEventNumber;
  fRunNumber = source.fRunNumber;
  fDist12toPrim= source.fDist12toPrim;
  fDist23toPrim= source.fDist23toPrim;
  fSigmaVert= source.fSigmaVert;
  if(source.GetNProngs()>0) {
    fd0 = new Double_t[GetNProngs()];
    fd0err = new Double_t[GetNProngs()];
    memcpy(fd0,source.fd0,GetNProngs()*sizeof(Double_t));
    memcpy(fd0err,source.fd0err,GetNProngs()*sizeof(Double_t));
    if(source.fPx) {
      fPx = new Double_t[GetNProngs()];
      fPy = new Double_t[GetNProngs()];
      fPz = new Double_t[GetNProngs()];
      memcpy(fPx,source.fPx,GetNProngs()*sizeof(Double_t));
      memcpy(fPy,source.fPy,GetNProngs()*sizeof(Double_t));
      memcpy(fPz,source.fPz,GetNProngs()*sizeof(Double_t));
    }
    if(source.fPID) {
      fPID = new Double_t[5*GetNProngs()];
      memcpy(fPID,source.fPID,GetNProngs()*sizeof(Double_t));
    }
    if(source.fDCA) {
      fDCA = new Double32_t[GetNProngs()*(GetNProngs()-1)/2];
      memcpy(fDCA,source.fDCA,(GetNProngs()*(GetNProngs()-1)/2)*sizeof(Float_t));
    }
  }
  return *this;
}
//--------------------------------------------------------------------------
Bool_t AliAODRecoDecayHF3Prong::SelectDplus(const Double_t *cuts)
  const {
//
// This function compares the Dplus with a set of cuts:
//
// cuts[0] = inv. mass half width [GeV]   
// cuts[1] = pTK [GeV/c]
// cuts[2] = pTPi [GeV/c]
// cuts[3] = d0K [cm]   lower limit!
// cuts[4] = d0Pi [cm]  lower limit!
// cuts[5] = dist12 (cm)
// cuts[6] = sigmavert (cm)
// cuts[7] = dist prim-sec (cm)
// cuts[8] = pM=Max{pT1,pT2,pT3} (GeV/c)
// cuts[9] = cosThetaPoint
// cuts[10] = Sum d0^2 (cm^2)
// cuts[11] = dca cut (cm)
//
// If candidate Dplus does not pass the cuts return kFALSE
//

  Double_t mDplusPDG = TDatabasePDG::Instance()->GetParticle(411)->Mass();
  Double_t mDplus=InvMassDplus();
  if(TMath::Abs(mDplus-mDplusPDG)>cuts[0])return kFALSE;
  //single track
  if(TMath::Abs(PtProng(1)) < cuts[1] || TMath::Abs(Getd0Prong(1))<cuts[3])return kFALSE;//Kaon
  if(TMath::Abs(PtProng(0)) < cuts[2] || TMath::Abs(Getd0Prong(0))<cuts[4])return kFALSE;//Pion1
  if(TMath::Abs(PtProng(2)) < cuts[2] || TMath::Abs(Getd0Prong(2))<cuts[4])return kFALSE;//Pion2

  //DCA
  for(Int_t i=0;i<3;i++) if(cuts[11]>0 && GetDCA(i)>cuts[11])return kFALSE;

  //2track cuts
  if(fDist12toPrim<cuts[5] || fDist23toPrim<cuts[5])return kFALSE;
  if(Getd0Prong(0)*Getd0Prong(1)<0. && Getd0Prong(2)*Getd0Prong(1)<0.)return kFALSE;

  //sec vert
  if(fSigmaVert>cuts[6])return kFALSE;

  if(DecayLength()<cuts[7])return kFALSE;

  if(TMath::Abs(PtProng(0))<cuts[8] && TMath::Abs(PtProng(1))<cuts[8] && TMath::Abs(PtProng(2))<cuts[8])return kFALSE;
  if(CosPointingAngle()   < cuts[9])return kFALSE;
  Double_t sum2=Getd0Prong(0)*Getd0Prong(0)+Getd0Prong(1)*Getd0Prong(1)+Getd0Prong(2)*Getd0Prong(2);
  if(sum2<cuts[10])return kFALSE;
  return kTRUE;
}
//--------------------------------------------------------------------------
Bool_t AliAODRecoDecayHF3Prong::SelectDs(const Double_t *cuts,Int_t &okDsKKpi,Int_t &okDspiKK)
  const {
//
// This function compares the Ds with a set of cuts (only mass at the moment)
//
// cuts[0] = inv. mass half width [GeV]   
//
// If candidate Ds does not pass the cuts return kFALSE
//
  Double_t mDsKKpi,mDspiKK;
  okDsKKpi=1; okDspiKK=1;

  Double_t mDsPDG = TDatabasePDG::Instance()->GetParticle(431)->Mass();

  mDsKKpi=InvMassDsKKpi();
  mDspiKK=InvMassDspiKK();

  if(TMath::Abs(mDsKKpi-mDsPDG)>cuts[0]) okDsKKpi = 0;
  if(TMath::Abs(mDspiKK-mDsPDG)>cuts[0]) okDspiKK = 0;
  if(!okDsKKpi && !okDspiKK) return kFALSE;

  return kTRUE;
}
//--------------------------------------------------------------------------
Bool_t AliAODRecoDecayHF3Prong::SelectLc(const Double_t *cuts,Int_t &okLcpKpi,Int_t &okLcpiKp)
  const {
//
// This function compares the Lc with a set of cuts (only mass at the moment)
//
// cuts[0] = inv. mass half width [GeV]   
//
// If candidate Lc does not pass the cuts return kFALSE
//
  Double_t mLcpKpi,mLcpiKp;
  okLcpKpi=1; okLcpiKp=1;

  Double_t mLcPDG = TDatabasePDG::Instance()->GetParticle(4122)->Mass();

  mLcpKpi=InvMassLcpKpi();
  mLcpiKp=InvMassLcpiKp();

  if(TMath::Abs(mLcpKpi-mLcPDG)>cuts[0]) okLcpKpi = 0;
  if(TMath::Abs(mLcpiKp-mLcPDG)>cuts[0]) okLcpiKp = 0;
  if(!okLcpKpi && !okLcpiKp) return kFALSE;

  return kTRUE;
}
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 3-prong decay
	19	//
	20	// Author: E.Bruna bruna@to.infn.it, F.Prino prino@to.infn.it
	21	/////////////////////////////////////////////////////////////
	22
	23	#include <TDatabasePDG.h>
	24	#include "AliAODRecoDecayHF.h"
	25	#include "AliAODRecoDecayHF3Prong.h"
	26
	27	ClassImp(AliAODRecoDecayHF3Prong)
	28
	29	//--------------------------------------------------------------------------
	30	AliAODRecoDecayHF3Prong::AliAODRecoDecayHF3Prong() :
	31	AliAODRecoDecayHF(),
	32	fSigmaVert(0),
	33	fDist12toPrim(0),
	34	fDist23toPrim(0)
	35	{
	36	//
	37	// Default Constructor
	38	//
	39	}
	40	//--------------------------------------------------------------------------
	41	AliAODRecoDecayHF3Prong::AliAODRecoDecayHF3Prong(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,
	45	Double_t dist12,Double_t dist23,Short_t charge) :
	46	AliAODRecoDecayHF(vtx2,3,charge,px,py,pz,d0,d0err),
	47	fSigmaVert(sigvert),
	48	fDist12toPrim(dist12),
	49	fDist23toPrim(dist23)
	50	{
	51	//
	52	// Constructor with AliAODVertex for decay vertex
	53	//
057c80d4	54	Double_t dcafloat[3];
3244eeed	55	for(Int_t i=0;i<3;i++)dcafloat[i]=dca[i];
	56	SetDCAs(3,dcafloat);
	57	}
	58	//--------------------------------------------------------------------------
	59	AliAODRecoDecayHF3Prong::AliAODRecoDecayHF3Prong(AliAODVertex *vtx2,
	60	Double_t d0,Double_t d0err,
	61	Double_t *dca, Double_t sigvert,
	62	Double_t dist12,Double_t dist23, Short_t charge) :
	63	AliAODRecoDecayHF(vtx2,3,charge,d0,d0err),
	64	fSigmaVert(sigvert),
	65	fDist12toPrim(dist12),
	66	fDist23toPrim(dist23)
	67	{
	68	//
	69	// Constructor with AliAODVertex for decay vertex and without prongs momenta
	70	//
057c80d4	71	Double_t dcafloat[3];
3244eeed	72	for(Int_t i=0;i<3;i++)dcafloat[i]=dca[i];
	73	SetDCAs(3,dcafloat);
	74	}
	75	//--------------------------------------------------------------------------
	76	AliAODRecoDecayHF3Prong::AliAODRecoDecayHF3Prong(const AliAODRecoDecayHF3Prong &source) :
	77	AliAODRecoDecayHF(source),
	78	fSigmaVert(source.fSigmaVert),
	79	fDist12toPrim(source.fDist12toPrim),
	80	fDist23toPrim(source.fDist23toPrim)
	81	{
	82	//
	83	// Copy constructor
	84	//
	85	}
	86	//--------------------------------------------------------------------------
	87	AliAODRecoDecayHF3Prong &AliAODRecoDecayHF3Prong::operator=(const AliAODRecoDecayHF3Prong &source)
	88	{
	89	//
	90	// assignment operator
	91	//
	92	if(&source == this) return *this;
	93	fOwnPrimaryVtx = source.fOwnPrimaryVtx;
	94	fSecondaryVtx = source.fSecondaryVtx;
	95	fCharge = source.fCharge;
	96	fNProngs = source.fNProngs;
	97	fNDCA = source.fNDCA;
	98	fNPID = source.fNPID;
	99	fEventNumber = source.fEventNumber;
	100	fRunNumber = source.fRunNumber;
	101	fDist12toPrim= source.fDist12toPrim;
	102	fDist23toPrim= source.fDist23toPrim;
	103	fSigmaVert= source.fSigmaVert;
	104	if(source.GetNProngs()>0) {
	105	fd0 = new Double_t[GetNProngs()];
	106	fd0err = new Double_t[GetNProngs()];
	107	memcpy(fd0,source.fd0,GetNProngs()*sizeof(Double_t));
	108	memcpy(fd0err,source.fd0err,GetNProngs()*sizeof(Double_t));
	109	if(source.fPx) {
	110	fPx = new Double_t[GetNProngs()];
	111	fPy = new Double_t[GetNProngs()];
	112	fPz = new Double_t[GetNProngs()];
	113	memcpy(fPx,source.fPx,GetNProngs()*sizeof(Double_t));
	114	memcpy(fPy,source.fPy,GetNProngs()*sizeof(Double_t));
	115	memcpy(fPz,source.fPz,GetNProngs()*sizeof(Double_t));
	116	}
	117	if(source.fPID) {
	118	fPID = new Double_t[5*GetNProngs()];
	119	memcpy(fPID,source.fPID,GetNProngs()*sizeof(Double_t));
	120	}
	121	if(source.fDCA) {
057c80d4	122	fDCA = new Double32_t[GetNProngs()*(GetNProngs()-1)/2];
3244eeed	123	memcpy(fDCA,source.fDCA,(GetNProngs()(GetNProngs()-1)/2)sizeof(Float_t));
	124	}
	125	}
	126	return *this;
	127	}
	128	//--------------------------------------------------------------------------
	129	Bool_t AliAODRecoDecayHF3Prong::SelectDplus(const Double_t *cuts)
	130	const {
	131	//
	132	// This function compares the Dplus with a set of cuts:
	133	//
	134	// cuts[0] = inv. mass half width [GeV]
	135	// cuts[1] = pTK [GeV/c]
	136	// cuts[2] = pTPi [GeV/c]
	137	// cuts[3] = d0K [cm] lower limit!
	138	// cuts[4] = d0Pi [cm] lower limit!
	139	// cuts[5] = dist12 (cm)
	140	// cuts[6] = sigmavert (cm)
	141	// cuts[7] = dist prim-sec (cm)
	142	// cuts[8] = pM=Max{pT1,pT2,pT3} (GeV/c)
	143	// cuts[9] = cosThetaPoint
	144	// cuts[10] = Sum d0^2 (cm^2)
	145	// cuts[11] = dca cut (cm)
	146	//
	147	// If candidate Dplus does not pass the cuts return kFALSE
	148	//
	149
	150	Double_t mDplusPDG = TDatabasePDG::Instance()->GetParticle(411)->Mass();
	151	Double_t mDplus=InvMassDplus();
	152	if(TMath::Abs(mDplus-mDplusPDG)>cuts[0])return kFALSE;
	153	//single track
	154	if(TMath::Abs(PtProng(1)) < cuts[1] \|\| TMath::Abs(Getd0Prong(1))<cuts[3])return kFALSE;//Kaon
	155	if(TMath::Abs(PtProng(0)) < cuts[2] \|\| TMath::Abs(Getd0Prong(0))<cuts[4])return kFALSE;//Pion1
	156	if(TMath::Abs(PtProng(2)) < cuts[2] \|\| TMath::Abs(Getd0Prong(2))<cuts[4])return kFALSE;//Pion2
	157
	158	//DCA
	159	for(Int_t i=0;i<3;i++) if(cuts[11]>0 && GetDCA(i)>cuts[11])return kFALSE;
	160
	161	//2track cuts
	162	if(fDist12toPrim<cuts[5] \|\| fDist23toPrim<cuts[5])return kFALSE;
	163	if(Getd0Prong(0)Getd0Prong(1)<0. && Getd0Prong(2)Getd0Prong(1)<0.)return kFALSE;
	164
	165	//sec vert
	166	if(fSigmaVert>cuts[6])return kFALSE;
	167
	168	if(DecayLength()<cuts[7])return kFALSE;
	169
	170	if(TMath::Abs(PtProng(0))<cuts[8] && TMath::Abs(PtProng(1))<cuts[8] && TMath::Abs(PtProng(2))<cuts[8])return kFALSE;
	171	if(CosPointingAngle() < cuts[9])return kFALSE;
	172	Double_t sum2=Getd0Prong(0)Getd0Prong(0)+Getd0Prong(1)Getd0Prong(1)+Getd0Prong(2)*Getd0Prong(2);
	173	if(sum2<cuts[10])return kFALSE;
	174	return kTRUE;
	175	}
79250a2b	176	//--------------------------------------------------------------------------
	177	Bool_t AliAODRecoDecayHF3Prong::SelectDs(const Double_t *cuts,Int_t &okDsKKpi,Int_t &okDspiKK)
	178	const {
	179	//
	180	// This function compares the Ds with a set of cuts (only mass at the moment)
	181	//
	182	// cuts[0] = inv. mass half width [GeV]
	183	//
	184	// If candidate Ds does not pass the cuts return kFALSE
	185	//
	186	Double_t mDsKKpi,mDspiKK;
	187	okDsKKpi=1; okDspiKK=1;
	188
	189	Double_t mDsPDG = TDatabasePDG::Instance()->GetParticle(431)->Mass();
	190
	191	mDsKKpi=InvMassDsKKpi();
	192	mDspiKK=InvMassDspiKK();
	193
	194	if(TMath::Abs(mDsKKpi-mDsPDG)>cuts[0]) okDsKKpi = 0;
	195	if(TMath::Abs(mDspiKK-mDsPDG)>cuts[0]) okDspiKK = 0;
	196	if(!okDsKKpi && !okDspiKK) return kFALSE;
	197
	198	return kTRUE;
	199	}
	200	//--------------------------------------------------------------------------
	201	Bool_t AliAODRecoDecayHF3Prong::SelectLc(const Double_t *cuts,Int_t &okLcpKpi,Int_t &okLcpiKp)
	202	const {
	203	//
	204	// This function compares the Lc with a set of cuts (only mass at the moment)
	205	//
	206	// cuts[0] = inv. mass half width [GeV]
	207	//
	208	// If candidate Lc does not pass the cuts return kFALSE
	209	//
	210	Double_t mLcpKpi,mLcpiKp;
	211	okLcpKpi=1; okLcpiKp=1;
	212
	213	Double_t mLcPDG = TDatabasePDG::Instance()->GetParticle(4122)->Mass();
	214
	215	mLcpKpi=InvMassLcpKpi();
	216	mLcpiKp=InvMassLcpiKp();
	217
	218	if(TMath::Abs(mLcpKpi-mLcPDG)>cuts[0]) okLcpKpi = 0;
	219	if(TMath::Abs(mLcpiKp-mLcPDG)>cuts[0]) okLcpiKp = 0;
	220	if(!okLcpKpi && !okLcpiKp) return kFALSE;
	221
	222	return kTRUE;
	223	}