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bendavid |
1.1 |
//--------------------------------------------------------------------------------------------------
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loizides |
1.9 |
// $Id: DecayData.h,v 1.8 2009/02/26 17:06:24 bendavid Exp $
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bendavid |
1.1 |
//
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// DecayData
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//
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loizides |
1.6 |
// Additional information on a stable daughter which is specific to a particular decay.
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bendavid |
1.1 |
//
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// Authors: J.Bendavid
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//--------------------------------------------------------------------------------------------------
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#ifndef MITANA_DATATREE_DECAYDATA_H
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#define MITANA_DATATREE_DECAYDATA_H
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#include "MitAna/DataTree/interface/DaughterData.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 DecayData : public DaughterData
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{
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public:
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loizides |
1.7 |
DecayData() : fMassError(0), fLxy(0), fLxyError(0),
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fDxy(0), fDxyError(0), fLz(0), fLzError(0){}
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DecayData(const Particle *p, const FourVector &mom) : DaughterData(p), fMomAtVertex(mom),
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fMassError(0), fLxy(0), fLxyError(0), fDxy(0), fDxyError(0), fLz(0), fLzError(0) {}
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bendavid |
1.1 |
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loizides |
1.6 |
Double_t Dxy() const { return fDxy; }
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Double_t DxyError() const { return fDxyError; }
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Double_t E() const { return fMomAtVertex.E(); }
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Double_t Lxy() const { return fLxy; }
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Double_t LxyError() const { return fLxyError; }
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Double_t Lz() const { return fLz; }
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Double_t LzError() const { return fLzError; }
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Double_t MassError() const { return fMassError; }
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EObjType ObjType() const { return kDecayData; }
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const ThreeVector32 RelativePosition() const;
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void SetDxy(Double_t dxy) { fDxy = dxy; }
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void SetDxyError(Double_t dxyError) { fDxyError = dxyError; }
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loizides |
1.9 |
void SetLxy(Double_t lxy) { fLxy = lxy; }
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loizides |
1.6 |
void SetLxyError(Double_t lxyError) { fLxyError = lxyError; }
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loizides |
1.9 |
void SetLz(Double_t lz) { fLz = lz; }
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loizides |
1.6 |
void SetLzError(Double_t lzError) { fLzError = lzError; }
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void SetMom(Double_t px, Double_t y, Double_t z, Double_t e);
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bendavid |
1.8 |
void SetMom(const FourVector &mom) { fMomAtVertex = mom; ClearMom(); }
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loizides |
1.9 |
void SetMassError(Double_t massError) { fMassError = massError; }
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bendavid |
1.1 |
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protected:
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loizides |
1.7 |
void GetMom() const;
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bendavid |
1.3 |
FourVectorM32 fMomAtVertex; //fitted momentum at vertex
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loizides |
1.6 |
Double32_t fMassError; //fitted mass error
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Double32_t fLxy; //fitted lxy
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Double32_t fLxyError; //fitted lxy error
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Double32_t fDxy; //fitted impact parameter
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Double32_t fDxyError; //fitted impact parameter error
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Double32_t fLz; //fitted lz
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Double32_t fLzError; //fitted lz error
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bendavid |
1.1 |
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loizides |
1.6 |
ClassDef(DecayData, 1) // Decay data for stable daughter class
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bendavid |
1.1 |
};
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}
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loizides |
1.7 |
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//--------------------------------------------------------------------------------------------------
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inline void mithep::DecayData::GetMom() const
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{
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// Get momentum values from stored values.
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fCachedMom.SetCoordinates(fMomAtVertex.Pt(),fMomAtVertex.Eta(),
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fMomAtVertex.Phi(),fMomAtVertex.M());
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}
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bendavid |
1.1 |
//--------------------------------------------------------------------------------------------------
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inline void mithep::DecayData::SetMom(Double32_t px, Double32_t py, Double32_t pz, Double32_t e)
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{
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// Set four momentum.
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fMomAtVertex.SetXYZT(px, py, pz, e);
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bendavid |
1.8 |
ClearMom();
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bendavid |
1.1 |
}
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//--------------------------------------------------------------------------------------------------
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inline const mithep::ThreeVector32 mithep::DecayData::RelativePosition() const
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{
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loizides |
1.6 |
//Compute the position vector of the decay vertex relative to the parent decay vertex.
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bendavid |
1.1 |
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mithep::ThreeVector32 dz(0,0,fLz*TMath::Abs(fMomAtVertex.Pz())/fMomAtVertex.Pz());
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mithep::ThreeVector32 momPerp(fMomAtVertex.Px(),fMomAtVertex.Py(),0);
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mithep::ThreeVector32 zHat(0,0,1.0);
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mithep::ThreeVector32 dxy = -momPerp.Cross(zHat)*fDxy/momPerp.R();
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mithep::ThreeVector32 dlxy = momPerp*fLxy/momPerp.R();
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return (dxy+dlxy+dz);
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}
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#endif
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