DataTree/interface/MCParticle.h

//--------------------------------------------------------------------------------------------------
// $Id: MCParticle.h,v 1.23 2009/09/25 08:38:18 loizides 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                Mark()                   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::Mark() const
{
  // mark myself
  mithep::DataObject::Mark();
  // mark my dependencies if they are there
  if (fMother.IsValid())
    fMother.Obj()->Mark();
}

//--------------------------------------------------------------------------------------------------
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:	1.24
Committed:	Wed Mar 28 12:15:34 2012 UTC (13 years, 1 month ago) by paus
Content type:	text/plain
Branch:	MAIN
Changes since 1.23:	+15 -2 lines
Log Message:	Enable skimming.
#	User	Rev	Content
1	bendavid	1.1	//--------------------------------------------------------------------------------------------------
2	paus	1.24	// $Id: MCParticle.h,v 1.23 2009/09/25 08:38:18 loizides 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	bendavid	1.1
83	paus	1.24	// Some structural tools
84			void Mark() 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	1.24	inline void mithep::MCParticle::Mark() const
104			{
105			// mark myself
106			mithep::DataObject::Mark();
107			// mark my dependencies if they are there
108			if (fMother.IsValid())
109			fMother.Obj()->Mark();
110			}
111
112			//--------------------------------------------------------------------------------------------------
113	loizides	1.8	inline const mithep::MCParticle *mithep::MCParticle::Daughter(UInt_t i) const
114			{
115			// Return daughter corresponding to given index.
116
117			return static_cast<const MCParticle*>(fDaughters.At(i));
118			}
119
120			//--------------------------------------------------------------------------------------------------
121			inline const mithep::MCParticle *mithep::MCParticle::DistinctMother() const
122			{
123			// Return mother, walking up the tree until a particle with a different pdg from this one
124			// is found.
125
126			const mithep::MCParticle *mother = Mother();
127
128			if (!mother)
129			return 0;
130
131	bendavid	1.22	while (mother && mother->PdgId()==fPdgId)
132	loizides	1.8	mother = mother->Mother();
133
134			return mother;
135			}
136
137			//--------------------------------------------------------------------------------------------------
138	loizides	1.14	inline Double_t mithep::MCParticle::GetCharge() const
139			{
140			// Get charge from pdg lookup.
141
142			TParticlePDG *pdgEntry = PdgEntry();
143			if (pdgEntry)
144			return pdgEntry->Charge()/3.0;
145			else {
146			Error("Charge", "Pdg code for %i not found in table, returning charge=-99.0", fPdgId);
147			return -99.0;
148			}
149			}
150
151			//--------------------------------------------------------------------------------------------------
152			inline void mithep::MCParticle::GetMom() const
153			{
154			// Get momentum values from stored values.
155
156	loizides	1.16	fCachedMom.SetCoordinates(fMom.Pt(), fMom.Eta(), fMom.Phi(), fMom.M());
157	loizides	1.14	}
158
159			//--------------------------------------------------------------------------------------------------
160	loizides	1.7	inline Bool_t mithep::MCParticle::HasDaughter(Int_t pid, Bool_t checkCharge) const
161			{
162			// Return true if a particle with given pdg code is found amoung daughters.
163			// If checkCharge is false then just the type of particle is checked
164			// (ie particle and anti-particle).
165
166			if (checkCharge) {
167			for (UInt_t i=0; i<NDaughters(); ++i)
168			if (Daughter(i)->PdgId()==pid)
169			return kTRUE;
170			} else {
171			Int_t apid = pid>0?pid:-pid;
172			for (UInt_t i=0; i<NDaughters(); ++i)
173			if (Daughter(i)->AbsPdgId()==apid)
174			return kTRUE;
175			}
176			return kFALSE;
177			}
178
179			//--------------------------------------------------------------------------------------------------
180	loizides	1.9	inline Bool_t mithep::MCParticle::HasMother(const MCParticle *m) const
181			{
182			// Return true if the given particle is among mothers. (Note the comparison
183			// is made on pointers and therefore will fail if you work on copies.)
184
185			if (!m)
186			return kFALSE;
187
188			const mithep::MCParticle *mother = Mother();
189			while (mother && mother!=m)
190			mother = mother->Mother();
191
192			if (mother)
193			return kTRUE;
194			return kFALSE;
195			}
196
197			//--------------------------------------------------------------------------------------------------
198	loizides	1.8	inline Bool_t mithep::MCParticle::HasMother(Int_t pid, Bool_t checkCharge) const
199			{
200			// Return true if a particle with given pdg code is found amoung mothers.
201			// If checkCharge is false then just the type of particle is checked
202			// (ie particle and anti-particle).
203	bendavid	1.4
204			const mithep::MCParticle *mother = Mother();
205
206	loizides	1.8	if (checkCharge) {
207	loizides	1.9	while (mother && mother->PdgId()!=pid)
208	loizides	1.8	mother = mother->Mother();
209			} else {
210			Int_t apid = pid>0?pid:-pid;
211	loizides	1.9	while (mother && mother->AbsPdgId()!=apid)
212	loizides	1.8	mother = mother->Mother();
213			}
214	bendavid	1.4
215	loizides	1.8	if (mother)
216			return kTRUE;
217			return kFALSE;
218	bendavid	1.1	}
219
220			//--------------------------------------------------------------------------------------------------
221	loizides	1.7	inline Bool_t mithep::MCParticle::Is(Int_t pid, Bool_t checkCharge) const
222			{
223			// Return true if particle is of given type. If checkCharge is false then just the type of
224			// particle is checked (ie particle and anti-particle).
225
226			if (checkCharge)
227			return (PdgId() == pid);
228
229			Int_t apid = pid>0?pid:-pid;
230			return (AbsPdgId() == apid);
231			}
232
233			//--------------------------------------------------------------------------------------------------
234	loizides	1.11	inline Bool_t mithep::MCParticle::IsNot(Int_t pid, Bool_t checkCharge) const
235			{
236			// Return true if particle is not of given type. If checkCharge is false then just the type of
237			// particle is checked (ie particle and anti-particle).
238
239			return !Is(pid, checkCharge);
240			}
241
242			//--------------------------------------------------------------------------------------------------
243	loizides	1.19	inline Bool_t mithep::MCParticle::IsLepton() const
244			{
245			// Return true if particle is a lepton.
246
247			Int_t ap = AbsPdgId();
248			if ((ap==kEl) \|\|
249			(ap==kMu) \|\|
250			(ap==kTau))
251			return kTRUE;
252
253			return kFALSE;
254			}
255
256			//--------------------------------------------------------------------------------------------------
257	phedex	1.20	inline Bool_t mithep::MCParticle::IsNeutral() const
258			{
259			// Return true if particle is a neutral.
260
261	loizides	1.21	return (Charge()!=0);
262	phedex	1.20	}
263
264			//--------------------------------------------------------------------------------------------------
265	bendavid	1.1	inline Bool_t mithep::MCParticle::IsNeutrino() const
266			{
267	loizides	1.19	// Return true if particle is a neutrino.
268	bendavid	1.1
269			Int_t ap = AbsPdgId();
270			if ((ap==kElNu) \|\|
271			(ap==kMuNu) \|\|
272			(ap==kTauNu))
273			return kTRUE;
274
275			return kFALSE;
276			}
277
278			//--------------------------------------------------------------------------------------------------
279			inline TParticlePDG *mithep::MCParticle::PdgEntry() const
280			{
281			// Return entry to pdg database.
282
283			return TDatabasePDG::Instance()->GetParticle(fPdgId);
284			}
285
286			//--------------------------------------------------------------------------------------------------
287	loizides	1.18	inline Double_t mithep::MCParticle::PdgMass() const
288			{
289			// Return mass obtained from pdg database.
290
291			TParticlePDG *pdg = PdgEntry();
292			if (pdg)
293			return pdg->Mass();
294			return 0;
295			}
296
297			//--------------------------------------------------------------------------------------------------
298	bendavid	1.1	inline void mithep::MCParticle::SetMom(Double_t px, Double_t py, Double_t pz, Double_t e)
299			{
300			// Set four vector.
301
302	loizides	1.16	fMom.SetXYZT(px, py, pz, e);
303	bendavid	1.15	ClearMom();
304	bendavid	1.1	}
305
306			//--------------------------------------------------------------------------------------------------
307			inline void mithep::MCParticle::SetVertex(Double_t x, Double_t y, Double_t z)
308			{
309			// Set decay vertex.
310
311			fDecayVertex.SetXYZ(x,y,z);
312			}
313			#endif