DataTree/interface/MCParticle.h

//--------------------------------------------------------------------------------------------------
// $Id: MCParticle.h,v 1.25 2012/03/29 23:41:55 paus Exp $
//
// MCParticle
//
// Stores MC information for both generated and simulated particles.
//
// Authors: C.Loizides, J.Bendavid, C.Paus
//--------------------------------------------------------------------------------------------------

#ifndef MITANA_DATATREE_MCPARTICLE_H
#define MITANA_DATATREE_MCPARTICLE_H

#include <TDatabasePDG.h>
#include <TParticlePDG.h> 
#include "MitCommon/DataFormats/interface/Vect3.h"
#include "MitCommon/DataFormats/interface/Vect4M.h"
#include "MitAna/DataCont/interface/Ref.h"
#include "MitAna/DataTree/interface/CompositeParticle.h"

namespace mithep 
{
  class MCParticle : public CompositeParticle
  {
    public:
      enum EPartType {
        kUnknown=0, 
        kUp=1, kDown=2, kStrange=3, kCharm=4, kBottom=5, kTop=6,
        kEl=11, kMu=13, kTau=15, 
        kElNu=12, kMuNu=14, kTauNu=16,
        kGlu=21, kGamma=22, kZ=23, kW=24, kH=25,
        kZp=32, kZpp=33, kWp=34, kH0=35, kA0=36, kHp=37,
        kPi0=111, kEta=221, kKLong=130, kKShort=310, kK0=311,
        kD0=413, kB0=511, kB0Bar=513, kJPsi=443, kUpsilon=553,
        kProton=2122, kNeutron=2122, kDeltaPlusPlus = 2224,
        kDeltaPlus = 2214, kDelta0 = 2114, kDeltaMinus=1114
      };

      MCParticle() : fPdgId(0), fStatus(0), fIsGenerated(kFALSE), fIsSimulated(kFALSE) {}
      MCParticle(Double_t px, Double_t py, Double_t pz, Double_t e, Int_t id, Int_t s) : 
        fPdgId(id), fStatus(s), fMom(FourVector(px,py,pz,e)),
        fIsGenerated(kFALSE), fIsSimulated(kFALSE) {}

      Int_t               AbsPdgId()               const   { return (fPdgId<0 ? -fPdgId:fPdgId); }
      void                AddDaughter(const MCParticle *p) { fDaughters.Add(p);                  }
      const ThreeVector   DecayVertex()            const   { return fDecayVertex.V();            }
      const MCParticle   *Daughter(UInt_t i)       const;
      const MCParticle   *DistinctMother()         const;
      using CompositeParticle::HasDaughter;
      const MCParticle   *FindDaughter(Int_t pid, 
                                       Bool_t checkCharge=kFALSE, const MCParticle *start=0) const;
      const MCParticle   *FindMother(Int_t pid, Bool_t checkCharge=kFALSE)  const;
      Bool_t              HasDaughter(Int_t pid, Bool_t checkCharge=kFALSE) const;
      Bool_t              HasMother()              const { return fMother.IsValid(); }
      Bool_t              HasMother(const MCParticle *m)                    const;
      Bool_t              HasMother(Int_t pid, Bool_t checkCharge=kFALSE)   const;
      Bool_t              Is(Int_t pid, Bool_t checkCharge=kFALSE)          const;
      Bool_t              IsCharged()              const { return !IsNeutral();      }
      Bool_t              IsGenerated()            const { return fIsGenerated;      }
      Bool_t              IsGluon()                const { return fPdgId == kGlu;    }
      Bool_t              IsLepton()               const;
      Bool_t              IsNeutral()              const;
      Bool_t              IsNeutrino()             const;
      Bool_t              IsNot(Int_t pid, Bool_t checkCharge=kFALSE)       const;
      Bool_t              IsParton()               const { return (IsGluon() || IsQuark());       }
      Bool_t              IsQuark()                const { return (AbsPdgId()>0 && AbsPdgId()<7); }
      Bool_t              IsSimulated()            const { return fIsSimulated;  }
      const MCParticle   *Mother()                 const { return fMother.Obj(); }
      EObjType            ObjType()                const { return kMCParticle;   }      
      void                SetIsGenerated(Bool_t t=kTRUE) { fIsGenerated = t;     }
      void                SetIsSimulated(Bool_t t=kTRUE) { fIsSimulated = t;     }
      TParticlePDG       *PdgEntry()               const;
      Int_t               PdgId()                  const { return fPdgId;  }
      Double_t            PdgMass()                const;
      void                SetMom(Double_t px, Double_t py, Double_t pz, Double_t e);
      void                SetMother(const MCParticle *p) { fMother = p;    }
      void                SetStatus(Int_t s)             { fStatus = s;    }
      void                SetVertex(Double_t x, Double_t y, Double_t z);
      void                SetPdgId(Int_t s)              {  fPdgId = s;    }
      Int_t               Status()                 const { return fStatus; }
      void                Print(Option_t *opt="")  const;

      // Some structural tools
      void                MarkMother(UInt_t i=1)   const;

    protected:
      Double_t            GetCharge()              const;
      void                GetMom()                 const;

      Int_t               fPdgId;        //pdg identifier
      Short_t             fStatus;       //status flag of generator or simulation
      Vect4M              fMom;          //four momentum vector
      Vect3               fDecayVertex;  //gen decay vertex
      Ref<MCParticle>     fMother;       //reference to mother
      Bool_t              fIsGenerated;  //=true if generated particle
      Bool_t              fIsSimulated;  //=true if simulated particle

    ClassDef(MCParticle,1) // Generated particle class
  };
}

//--------------------------------------------------------------------------------------------------
inline void mithep::MCParticle::MarkMother(UInt_t ib) const
{
  // mark myself
  mithep::DataObject::Mark(ib);
  // mark only the mother reference (as opposed to standard Mark() function which marks
  // only daughters, keep them seperate to avoid circular references
  if (fMother.IsValid())
    fMother.Obj()->Mark(ib);

}

//--------------------------------------------------------------------------------------------------
inline const mithep::MCParticle *mithep::MCParticle::Daughter(UInt_t i) const 
{ 
  // Return daughter corresponding to given index.

  return static_cast<const MCParticle*>(fDaughters.At(i)); 
}

//--------------------------------------------------------------------------------------------------
inline const mithep::MCParticle *mithep::MCParticle::DistinctMother() const 
{ 
  // Return mother, walking up the tree until a particle with a different pdg from this one
  // is found.

  const mithep::MCParticle *mother = Mother();
  
  if (!mother) 
    return 0;
  
  while (mother && mother->PdgId()==fPdgId)
    mother = mother->Mother();
    
  return mother;
}

//--------------------------------------------------------------------------------------------------
inline Double_t mithep::MCParticle::GetCharge() const
{
  // Get charge from pdg lookup.

  TParticlePDG *pdgEntry = PdgEntry();
  if (pdgEntry)
    return pdgEntry->Charge()/3.0;
  else {
    Error("Charge", "Pdg code for %i not found in table, returning charge=-99.0", fPdgId);
    return -99.0;
  }
}

//--------------------------------------------------------------------------------------------------
inline void mithep::MCParticle::GetMom() const
{
  // Get momentum values from stored values.

  fCachedMom.SetCoordinates(fMom.Pt(), fMom.Eta(), fMom.Phi(), fMom.M());
}

//--------------------------------------------------------------------------------------------------
inline Bool_t mithep::MCParticle::HasDaughter(Int_t pid, Bool_t checkCharge) const
{
  // Return true if a particle with given pdg code is found amoung daughters.
  // If checkCharge is false then just the type of particle is checked 
  // (ie particle and anti-particle).

  if (checkCharge) {
    for (UInt_t i=0; i<NDaughters(); ++i)
      if (Daughter(i)->PdgId()==pid) 
        return kTRUE;
  } else {
    Int_t apid = pid>0?pid:-pid;
    for (UInt_t i=0; i<NDaughters(); ++i)
      if (Daughter(i)->AbsPdgId()==apid) 
        return kTRUE;
  }
  return kFALSE;
}

//--------------------------------------------------------------------------------------------------
inline Bool_t mithep::MCParticle::HasMother(const MCParticle *m) const
{
  // Return true if the given particle is among mothers. (Note the comparison
  // is made on pointers and therefore will fail if you work on copies.)

  if (!m) 
    return kFALSE;

  const mithep::MCParticle *mother = Mother();
  while (mother && mother!=m)
    mother = mother->Mother();

  if (mother) 
    return kTRUE;
  return kFALSE;
}

//--------------------------------------------------------------------------------------------------
inline Bool_t mithep::MCParticle::HasMother(Int_t pid, Bool_t checkCharge) const
{
  // Return true if a particle with given pdg code is found amoung mothers.
  // If checkCharge is false then just the type of particle is checked 
  // (ie particle and anti-particle).

  const mithep::MCParticle *mother = Mother();
  
  if (checkCharge) {
    while (mother && mother->PdgId()!=pid)
      mother = mother->Mother();
  } else {
    Int_t apid = pid>0?pid:-pid;
    while (mother && mother->AbsPdgId()!=apid)
      mother = mother->Mother();
  }

  if (mother) 
    return kTRUE;
  return kFALSE;
}

//--------------------------------------------------------------------------------------------------
inline Bool_t mithep::MCParticle::Is(Int_t pid, Bool_t checkCharge) const 
{ 
  // Return true if particle is of given type. If checkCharge is false then just the type of 
  // particle is checked (ie particle and anti-particle).

  if (checkCharge) 
    return (PdgId() == pid);

  Int_t apid = pid>0?pid:-pid;
  return (AbsPdgId() == apid);
}

//--------------------------------------------------------------------------------------------------
inline Bool_t mithep::MCParticle::IsNot(Int_t pid, Bool_t checkCharge) const 
{ 
  // Return true if particle is not of given type. If checkCharge is false then just the type of 
  // particle is checked (ie particle and anti-particle).

  return !Is(pid, checkCharge);
}

//--------------------------------------------------------------------------------------------------
inline Bool_t mithep::MCParticle::IsLepton() const 
{ 
  // Return true if particle is a lepton.

  Int_t ap = AbsPdgId();
  if ((ap==kEl) ||
      (ap==kMu) ||
      (ap==kTau)) 
    return kTRUE;

  return kFALSE;
}

//--------------------------------------------------------------------------------------------------
inline Bool_t mithep::MCParticle::IsNeutral() const 
{ 
  // Return true if particle is a neutral.

  return (Charge()!=0);
}

//--------------------------------------------------------------------------------------------------
inline Bool_t mithep::MCParticle::IsNeutrino() const 
{ 
  // Return true if particle is a neutrino.

  Int_t ap = AbsPdgId();
  if ((ap==kElNu) ||
      (ap==kMuNu) ||
      (ap==kTauNu)) 
    return kTRUE;

  return kFALSE;
}

//--------------------------------------------------------------------------------------------------
inline TParticlePDG *mithep::MCParticle::PdgEntry() const 
{ 
  // Return entry to pdg database.

  return TDatabasePDG::Instance()->GetParticle(fPdgId); 
}

//--------------------------------------------------------------------------------------------------
inline Double_t mithep::MCParticle::PdgMass() const 
{ 
  // Return mass obtained from pdg database.

  TParticlePDG *pdg = PdgEntry();
  if (pdg)
    return pdg->Mass();
  return 0;
}

//--------------------------------------------------------------------------------------------------
inline void mithep::MCParticle::SetMom(Double_t px, Double_t py, Double_t pz, Double_t e)
{ 
  // Set four vector.

  fMom.SetXYZT(px, py, pz, e);
  ClearMom();
}

//--------------------------------------------------------------------------------------------------
inline void mithep::MCParticle::SetVertex(Double_t x, Double_t y, Double_t z)
{
  // Set decay vertex.

  fDecayVertex.SetXYZ(x,y,z);
}
#endif
Revision:	1.26
Committed:	Sat May 5 16:49:09 2012 UTC (13 years ago) by paus
Content type:	text/plain
Branch:	MAIN
CVS Tags:	Mit_032, Mit_031, Mit_030, Mit_029c, Mit_029b, Mit_030_pre1, Mit_029a, Mit_029, Mit_029_pre1, Mit_028a, Mit_028, Mit_027a, Mit_027, HEAD
Changes since 1.25:	+16 -1 lines
Log Message:	Version 027 - complete version for ICHEP 2012.
#	User	Rev	Content
1	bendavid	1.1	//--------------------------------------------------------------------------------------------------
2	paus	1.26	// $Id: MCParticle.h,v 1.25 2012/03/29 23:41:55 paus Exp $
3	bendavid	1.1	//
4			// MCParticle
5			//
6	loizides	1.12	// Stores MC information for both generated and simulated particles.
7	bendavid	1.1	//
8	paus	1.24	// Authors: C.Loizides, J.Bendavid, C.Paus
9	bendavid	1.1	//--------------------------------------------------------------------------------------------------
10
11	loizides	1.3	#ifndef MITANA_DATATREE_MCPARTICLE_H
12			#define MITANA_DATATREE_MCPARTICLE_H
13	bendavid	1.1
14			#include <TDatabasePDG.h>
15			#include <TParticlePDG.h>
16	loizides	1.17	#include "MitCommon/DataFormats/interface/Vect3.h"
17			#include "MitCommon/DataFormats/interface/Vect4M.h"
18	bendavid	1.13	#include "MitAna/DataCont/interface/Ref.h"
19	bendavid	1.1	#include "MitAna/DataTree/interface/CompositeParticle.h"
20
21			namespace mithep
22			{
23			class MCParticle : public CompositeParticle
24			{
25			public:
26	loizides	1.23	enum EPartType {
27			kUnknown=0,
28			kUp=1, kDown=2, kStrange=3, kCharm=4, kBottom=5, kTop=6,
29			kEl=11, kMu=13, kTau=15,
30			kElNu=12, kMuNu=14, kTauNu=16,
31			kGlu=21, kGamma=22, kZ=23, kW=24, kH=25,
32			kZp=32, kZpp=33, kWp=34, kH0=35, kA0=36, kHp=37,
33			kPi0=111, kEta=221, kKLong=130, kKShort=310, kK0=311,
34			kD0=413, kB0=511, kB0Bar=513, kJPsi=443, kUpsilon=553,
35			kProton=2122, kNeutron=2122, kDeltaPlusPlus = 2224,
36			kDeltaPlus = 2214, kDelta0 = 2114, kDeltaMinus=1114
37			};
38
39	loizides	1.16	MCParticle() : fPdgId(0), fStatus(0), fIsGenerated(kFALSE), fIsSimulated(kFALSE) {}
40	bendavid	1.1	MCParticle(Double_t px, Double_t py, Double_t pz, Double_t e, Int_t id, Int_t s) :
41	loizides	1.18	fPdgId(id), fStatus(s), fMom(FourVector(px,py,pz,e)),
42	bendavid	1.1	fIsGenerated(kFALSE), fIsSimulated(kFALSE) {}
43
44	loizides	1.16	Int_t AbsPdgId() const { return (fPdgId<0 ? -fPdgId:fPdgId); }
45			void AddDaughter(const MCParticle *p) { fDaughters.Add(p); }
46			const ThreeVector DecayVertex() const { return fDecayVertex.V(); }
47	loizides	1.3	const MCParticle *Daughter(UInt_t i) const;
48	bendavid	1.4	const MCParticle *DistinctMother() const;
49	loizides	1.7	using CompositeParticle::HasDaughter;
50	loizides	1.8	const MCParticle *FindDaughter(Int_t pid,
51			Bool_t checkCharge=kFALSE, const MCParticle *start=0) const;
52	loizides	1.16	const MCParticle *FindMother(Int_t pid, Bool_t checkCharge=kFALSE) const;
53	loizides	1.7	Bool_t HasDaughter(Int_t pid, Bool_t checkCharge=kFALSE) const;
54	loizides	1.3	Bool_t HasMother() const { return fMother.IsValid(); }
55	loizides	1.9	Bool_t HasMother(const MCParticle *m) const;
56	loizides	1.8	Bool_t HasMother(Int_t pid, Bool_t checkCharge=kFALSE) const;
57	loizides	1.7	Bool_t Is(Int_t pid, Bool_t checkCharge=kFALSE) const;
58	loizides	1.21	Bool_t IsCharged() const { return !IsNeutral(); }
59	loizides	1.16	Bool_t IsGenerated() const { return fIsGenerated; }
60			Bool_t IsGluon() const { return fPdgId == kGlu; }
61	loizides	1.19	Bool_t IsLepton() const;
62	phedex	1.20	Bool_t IsNeutral() const;
63	loizides	1.7	Bool_t IsNeutrino() const;
64	loizides	1.21	Bool_t IsNot(Int_t pid, Bool_t checkCharge=kFALSE) const;
65	loizides	1.16	Bool_t IsParton() const { return (IsGluon() \|\| IsQuark()); }
66	loizides	1.7	Bool_t IsQuark() const { return (AbsPdgId()>0 && AbsPdgId()<7); }
67	loizides	1.16	Bool_t IsSimulated() const { return fIsSimulated; }
68	bendavid	1.13	const MCParticle *Mother() const { return fMother.Obj(); }
69	loizides	1.16	EObjType ObjType() const { return kMCParticle; }
70			void SetIsGenerated(Bool_t t=kTRUE) { fIsGenerated = t; }
71			void SetIsSimulated(Bool_t t=kTRUE) { fIsSimulated = t; }
72	loizides	1.3	TParticlePDG *PdgEntry() const;
73	loizides	1.16	Int_t PdgId() const { return fPdgId; }
74	loizides	1.18	Double_t PdgMass() const;
75	bendavid	1.1	void SetMom(Double_t px, Double_t py, Double_t pz, Double_t e);
76	loizides	1.16	void SetMother(const MCParticle *p) { fMother = p; }
77			void SetStatus(Int_t s) { fStatus = s; }
78	bendavid	1.2	void SetVertex(Double_t x, Double_t y, Double_t z);
79	loizides	1.16	void SetPdgId(Int_t s) { fPdgId = s; }
80	loizides	1.3	Int_t Status() const { return fStatus; }
81			void Print(Option_t *opt="") const;
82	paus	1.24
83	paus	1.26	// Some structural tools
84			void MarkMother(UInt_t i=1) const;
85
86	bendavid	1.1	protected:
87	loizides	1.14	Double_t GetCharge() const;
88			void GetMom() const;
89
90	bendavid	1.1	Int_t fPdgId; //pdg identifier
91	loizides	1.16	Short_t fStatus; //status flag of generator or simulation
92			Vect4M fMom; //four momentum vector
93			Vect3 fDecayVertex; //gen decay vertex
94	bendavid	1.13	Ref<MCParticle> fMother; //reference to mother
95	loizides	1.3	Bool_t fIsGenerated; //=true if generated particle
96			Bool_t fIsSimulated; //=true if simulated particle
97	bendavid	1.1
98	loizides	1.14	ClassDef(MCParticle,1) // Generated particle class
99	bendavid	1.1	};
100			}
101
102			//--------------------------------------------------------------------------------------------------
103	paus	1.26	inline void mithep::MCParticle::MarkMother(UInt_t ib) const
104			{
105			// mark myself
106			mithep::DataObject::Mark(ib);
107			// mark only the mother reference (as opposed to standard Mark() function which marks
108			// only daughters, keep them seperate to avoid circular references
109			if (fMother.IsValid())
110			fMother.Obj()->Mark(ib);
111
112			}
113
114			//--------------------------------------------------------------------------------------------------
115	loizides	1.8	inline const mithep::MCParticle *mithep::MCParticle::Daughter(UInt_t i) const
116			{
117			// Return daughter corresponding to given index.
118
119			return static_cast<const MCParticle*>(fDaughters.At(i));
120			}
121
122			//--------------------------------------------------------------------------------------------------
123			inline const mithep::MCParticle *mithep::MCParticle::DistinctMother() const
124			{
125			// Return mother, walking up the tree until a particle with a different pdg from this one
126			// is found.
127
128			const mithep::MCParticle *mother = Mother();
129
130			if (!mother)
131			return 0;
132
133	bendavid	1.22	while (mother && mother->PdgId()==fPdgId)
134	loizides	1.8	mother = mother->Mother();
135
136			return mother;
137			}
138
139			//--------------------------------------------------------------------------------------------------
140	loizides	1.14	inline Double_t mithep::MCParticle::GetCharge() const
141			{
142			// Get charge from pdg lookup.
143
144			TParticlePDG *pdgEntry = PdgEntry();
145			if (pdgEntry)
146			return pdgEntry->Charge()/3.0;
147			else {
148			Error("Charge", "Pdg code for %i not found in table, returning charge=-99.0", fPdgId);
149			return -99.0;
150			}
151			}
152
153			//--------------------------------------------------------------------------------------------------
154			inline void mithep::MCParticle::GetMom() const
155			{
156			// Get momentum values from stored values.
157
158	loizides	1.16	fCachedMom.SetCoordinates(fMom.Pt(), fMom.Eta(), fMom.Phi(), fMom.M());
159	loizides	1.14	}
160
161			//--------------------------------------------------------------------------------------------------
162	loizides	1.7	inline Bool_t mithep::MCParticle::HasDaughter(Int_t pid, Bool_t checkCharge) const
163			{
164			// Return true if a particle with given pdg code is found amoung daughters.
165			// If checkCharge is false then just the type of particle is checked
166			// (ie particle and anti-particle).
167
168			if (checkCharge) {
169			for (UInt_t i=0; i<NDaughters(); ++i)
170			if (Daughter(i)->PdgId()==pid)
171			return kTRUE;
172			} else {
173			Int_t apid = pid>0?pid:-pid;
174			for (UInt_t i=0; i<NDaughters(); ++i)
175			if (Daughter(i)->AbsPdgId()==apid)
176			return kTRUE;
177			}
178			return kFALSE;
179			}
180
181			//--------------------------------------------------------------------------------------------------
182	loizides	1.9	inline Bool_t mithep::MCParticle::HasMother(const MCParticle *m) const
183			{
184			// Return true if the given particle is among mothers. (Note the comparison
185			// is made on pointers and therefore will fail if you work on copies.)
186
187			if (!m)
188			return kFALSE;
189
190			const mithep::MCParticle *mother = Mother();
191			while (mother && mother!=m)
192			mother = mother->Mother();
193
194			if (mother)
195			return kTRUE;
196			return kFALSE;
197			}
198
199			//--------------------------------------------------------------------------------------------------
200	loizides	1.8	inline Bool_t mithep::MCParticle::HasMother(Int_t pid, Bool_t checkCharge) const
201			{
202			// Return true if a particle with given pdg code is found amoung mothers.
203			// If checkCharge is false then just the type of particle is checked
204			// (ie particle and anti-particle).
205	bendavid	1.4
206			const mithep::MCParticle *mother = Mother();
207
208	loizides	1.8	if (checkCharge) {
209	loizides	1.9	while (mother && mother->PdgId()!=pid)
210	loizides	1.8	mother = mother->Mother();
211			} else {
212			Int_t apid = pid>0?pid:-pid;
213	loizides	1.9	while (mother && mother->AbsPdgId()!=apid)
214	loizides	1.8	mother = mother->Mother();
215			}
216	bendavid	1.4
217	loizides	1.8	if (mother)
218			return kTRUE;
219			return kFALSE;
220	bendavid	1.1	}
221
222			//--------------------------------------------------------------------------------------------------
223	loizides	1.7	inline Bool_t mithep::MCParticle::Is(Int_t pid, Bool_t checkCharge) const
224			{
225			// Return true if particle is of given type. If checkCharge is false then just the type of
226			// particle is checked (ie particle and anti-particle).
227
228			if (checkCharge)
229			return (PdgId() == pid);
230
231			Int_t apid = pid>0?pid:-pid;
232			return (AbsPdgId() == apid);
233			}
234
235			//--------------------------------------------------------------------------------------------------
236	loizides	1.11	inline Bool_t mithep::MCParticle::IsNot(Int_t pid, Bool_t checkCharge) const
237			{
238			// Return true if particle is not of given type. If checkCharge is false then just the type of
239			// particle is checked (ie particle and anti-particle).
240
241			return !Is(pid, checkCharge);
242			}
243
244			//--------------------------------------------------------------------------------------------------
245	loizides	1.19	inline Bool_t mithep::MCParticle::IsLepton() const
246			{
247			// Return true if particle is a lepton.
248
249			Int_t ap = AbsPdgId();
250			if ((ap==kEl) \|\|
251			(ap==kMu) \|\|
252			(ap==kTau))
253			return kTRUE;
254
255			return kFALSE;
256			}
257
258			//--------------------------------------------------------------------------------------------------
259	phedex	1.20	inline Bool_t mithep::MCParticle::IsNeutral() const
260			{
261			// Return true if particle is a neutral.
262
263	loizides	1.21	return (Charge()!=0);
264	phedex	1.20	}
265
266			//--------------------------------------------------------------------------------------------------
267	bendavid	1.1	inline Bool_t mithep::MCParticle::IsNeutrino() const
268			{
269	loizides	1.19	// Return true if particle is a neutrino.
270	bendavid	1.1
271			Int_t ap = AbsPdgId();
272			if ((ap==kElNu) \|\|
273			(ap==kMuNu) \|\|
274			(ap==kTauNu))
275			return kTRUE;
276
277			return kFALSE;
278			}
279
280			//--------------------------------------------------------------------------------------------------
281			inline TParticlePDG *mithep::MCParticle::PdgEntry() const
282			{
283			// Return entry to pdg database.
284
285			return TDatabasePDG::Instance()->GetParticle(fPdgId);
286			}
287
288			//--------------------------------------------------------------------------------------------------
289	loizides	1.18	inline Double_t mithep::MCParticle::PdgMass() const
290			{
291			// Return mass obtained from pdg database.
292
293			TParticlePDG *pdg = PdgEntry();
294			if (pdg)
295			return pdg->Mass();
296			return 0;
297			}
298
299			//--------------------------------------------------------------------------------------------------
300	bendavid	1.1	inline void mithep::MCParticle::SetMom(Double_t px, Double_t py, Double_t pz, Double_t e)
301			{
302			// Set four vector.
303
304	loizides	1.16	fMom.SetXYZT(px, py, pz, e);
305	bendavid	1.15	ClearMom();
306	bendavid	1.1	}
307
308			//--------------------------------------------------------------------------------------------------
309			inline void mithep::MCParticle::SetVertex(Double_t x, Double_t y, Double_t z)
310			{
311			// Set decay vertex.
312
313			fDecayVertex.SetXYZ(x,y,z);
314			}
315			#endif