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//-------------------------------------------------------------------------------------------------- |
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// $Id$ |
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// |
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// Composite Particle |
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// CompositeParticle |
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// Details to be worked out... |
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// A composite particle class that holds other (daughter) particles. |
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// |
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// Authors: J.Bendavid, C.Loizides |
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// |
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//-------------------------------------------------------------------------------------------------- |
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#ifndef DATATREE_COMPOSITEPARTICLE_H |
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#define DATATREE_COMPOSITEPARTICLE_H |
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#ifndef MITANA_DATATREE_COMPOSITEPARTICLE_H |
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#define MITANA_DATATREE_COMPOSITEPARTICLE_H |
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#include "MitAna/DataTree/interface/Types.h" |
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#include "MitAna/DataTree/interface/RefArray.h" |
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#include "MitAna/DataTree/interface/Particle.h" |
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#include "MitAna/DataCont/interface/RefArray.h" |
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namespace mithep |
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{ |
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{ |
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public: |
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CompositeParticle() {} |
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~CompositeParticle() {} |
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void AddDaughter(Particle *p) { fDaughters.Add(p); } |
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Int_t Charge() const; |
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const Particle *GetDaughter(UInt_t i) const { return fDaughters.At(i); } |
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UInt_t GetNDaughters() const { return fDaughters.GetEntries(); } |
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void AddDaughter(const Particle *p) |
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{ fDaughters.Add(p); ClearMom(); ClearCharge(); } |
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void Clear(Option_t *opt="") |
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{ fDaughters.Clear(opt); ClearMom(); ClearCharge(); } |
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const Particle *Daughter(UInt_t i) const { return fDaughters.At(i); } |
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UInt_t NDaughters() const { return fDaughters.Entries(); } |
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Bool_t HasDaughter(const Particle *p) const; |
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Bool_t HasCommonDaughter(const CompositeParticle *p) const; |
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Bool_t HasSameDaughters(const CompositeParticle *p) const; |
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Bool_t IsDaughter(const Particle *p) const; |
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FourVector Mom() const; |
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EObjType ObjType() const { return kCompositeParticle; } |
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protected: |
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Double_t GetCharge() const; |
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void GetMom() const; |
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RefArray<Particle> fDaughters; //references to daughter particles |
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ClassDef(CompositeParticle, 1) // Composite particle class |
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}; |
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} |
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//-------------------------------------------------------------------------------------------------- |
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inline Double_t mithep::CompositeParticle::GetCharge() const |
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{ |
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// Return sum of charge of daughter particles. |
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Double_t charge = 0; |
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for (UInt_t i=0; i<NDaughters(); ++i) |
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charge += Daughter(i)->Charge(); |
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return charge; |
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} |
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//-------------------------------------------------------------------------------------------------- |
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inline void mithep::CompositeParticle::GetMom() const |
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{ |
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// Calculate the vector sum of the momenta of the daughters. |
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FourVector mom; |
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for (UInt_t i=0; i<NDaughters(); ++i) |
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mom += (Daughter(i))->Mom(); |
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fCachedMom.SetCoordinates(mom.Pt(),mom.Eta(),mom.Phi(),mom.M()); |
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} |
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#endif |
