EvtIncoherentMixing.hh

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#ifndef EVTINCOHERENTMIXING_HH
#define EVTINCOHERENTMIXING_HH 1

// Include files

#include "EvtGenBase/EvtParticle.hh"

class EvtIncoherentMixing {
  public:
    EvtIncoherentMixing();

    ~EvtIncoherentMixing();    

    // activate or desactivate the Bs mixing
    static void setB0Mixing();
    static void unsetB0Mixing();

    // activate or desactivate the B0 mixing
    static void setBsMixing();
    static void unsetBsMixing();

    // is mixing activated ?
    static bool doB0Mixing();
    static bool doBsMixing();

    // set values for the mixing
    static void setdGammad( double value );
    static void setdeltamd( double value );
    static void setdGammas( double value );
    static void setdeltams( double value );

    // get parameters for mixing
    static double getdGammad();
    static double getdeltamd();
    static double getdGammas();
    static double getdeltams();

    // Functions to obtain time and type of the mixing ( 1 mix, 0 unmix )
    static void incoherentB0Mix( const EvtId id, double& t, int& mix );
    static void incoherentBsMix( const EvtId id, double& t, int& mix );

    // Functions to check if a B has mixed (comes from a B)
    static bool isB0Mixed( EvtParticle* );
    static bool isBsMixed( EvtParticle* );

    // Functions for CP models
    // returns for particle p the decay time t , the flavour of the tag
    // side (B0, anti-B0, B_s0, anti-B_s0). The flavour of p can flip
    // with probability probB
    static void OtherB( EvtParticle* p, double& t, EvtId& otherb, double probB );
    static void OtherB( EvtParticle* p, double& t, EvtId& otherb );

    static bool flipIsEnabled();
    static void enableFlip();
    static void disableFlip();

  protected:
  private:
    static bool _doB0Mixing;
    static bool _doBsMixing;
    static double _dGammad;
    static double _deltamd;
    static double _dGammas;
    static double _deltams;
    static bool _enableFlip;
};
#endif    // EVTGENBASE_EVTINCOHERENTMIXING_HH