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//--------------------------------------------------------------------------------------------------
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// $Id: StableDaughter.h,v 1.4 2008/07/29 17:00:12 loizides Exp $
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//
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// StableDaughter
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//
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// Stable particle to be used as part of a decay tree. Explicitly stores the three momentum at
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// the decay vertex as well as the link to the mother.
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//
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// Authors: C.Loizides, J.Bendavid
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//--------------------------------------------------------------------------------------------------
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#ifndef MITANA_DATATREE_STABLEDAUGHTER_H
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#define MITANA_DATATREE_STABLEDAUGHTER_H
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#include "MitAna/DataTree/interface/StableParticle.h"
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#include "MitAna/DataTree/interface/Types.h"
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namespace mithep
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{
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class StableDaughter : public StableParticle
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{
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public:
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StableDaughter() {}
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StableDaughter(UInt_t absPdgId, Track *track) : StableParticle(absPdgId, track) {}
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StableDaughter(UInt_t absPdgId, Track *track, Double_t px, Double_t py, Double_t pz) :
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StableParticle(absPdgId, track),
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fMomAtVertex(px,py,pz) {}
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~StableDaughter() {}
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Double_t Eta() const { return fMomAtVertex.Eta(); }
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const Particle *Mother() const;
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Double_t Phi() const { return fMomAtVertex.Phi(); }
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Double_t P() const { return fMomAtVertex.R(); }
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Double_t Pt() const { return fMomAtVertex.Rho(); }
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Double_t Px() const { return fMomAtVertex.X(); }
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Double_t Py() const { return fMomAtVertex.Y(); }
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Double_t Pz() const { return fMomAtVertex.Z(); }
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void SetThreeMom(Double_t px, Double_t y, Double_t z);
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const ThreeVector &ThreeMom() const { return fMomAtVertex; }
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protected:
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ThreeVector fMomAtVertex; //fitted momentum at vertex
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TRef fMother; //tracker track reference
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ClassDef(StableDaughter, 1) // Stable daughter class
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};
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}
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//--------------------------------------------------------------------------------------------------
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inline const mithep::Particle *mithep::StableDaughter::Mother() const
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{
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// Return decay mother.
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return static_cast<const Particle*>(fMother.GetObject());
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}
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//--------------------------------------------------------------------------------------------------
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inline void mithep::StableDaughter::SetThreeMom(Double_t px, Double_t py, Double_t pz)
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{
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// Set three momentum.
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fMomAtVertex.SetXYZ(px, py, pz);
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}
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#endif
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