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//-
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//-
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#include "TObject.h"
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#include "TObject.h"
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#include "TClonesArray.h"
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#include "TClonesArray.h"
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enum SIMPLEPID {PHOTON, ELECTRON, PION, MUON, KAON, PROTON, JPSI, D, DSTAR, B,KS };
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enum SIMPLEPID {PHOTON, ELECTRON, PION, MUON, KAON, PROTON, JPSI, D, DSTAR, B,KS, ALL };
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class BParticle : public TObject {
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class BParticle : public TObject {
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 private:
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 private:
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  float m_px;
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  float m_px;
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  float px() const { return m_px; };
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  float px() const { return m_px; };
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  float py() const { return m_py; };
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  float py() const { return m_py; };
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  float pz() const { return m_pz; };
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  float pz() const { return m_pz; };
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  float e() const { return m_e; };
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  float e() const { return m_e; };
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  float GetMomentum() const { return sqrt(m_px*m_px+m_py*m_py+m_pz*m_pz); };
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  float charge() const { return m_charge; };
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  float charge() const { return m_charge; };
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  SIMPLEPID pid() const { return m_pid; };
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  SIMPLEPID pid() const { return m_pid; };
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  float GetMass(SIMPLEPID pid);
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  float GetMass(SIMPLEPID pid);
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  float GetMass();
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  float GetMass();
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  void SetEnergyFromMass (float mass);
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  void SetEnergyFromMass (float mass);