EvtBcVMuNu.cpp

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#include "EvtGenModels/EvtBcVMuNu.hh"
 
#include "EvtGenBase/EvtGenKine.hh"
#include "EvtGenBase/EvtPDL.hh"
#include "EvtGenBase/EvtParticle.hh"
#include "EvtGenBase/EvtReport.hh"
#include "EvtGenBase/EvtSemiLeptonicVectorAmp.hh"
 
#include "EvtGenModels/EvtBCVFF.hh"
 
#include <iostream>
#include <stdlib.h>
#include <string>
 
using namespace std;
 
std::string EvtBcVMuNu::getName() const
{
    return "BC_VMN";
}
 
EvtDecayBase* EvtBcVMuNu::clone() const
{
    return new EvtBcVMuNu;
}
 
void EvtBcVMuNu::decay( EvtParticle* p )
{
    p->initializePhaseSpace( getNDaug(), getDaugs() );
    m_calcamp->CalcAmp( p, m_amp2, m_ffmodel.get() );
}
 
void EvtBcVMuNu::init()
{
    checkNArg( 1 );
    checkNDaug( 3 );
 
    //We expect the parent to be a scalar
    //and the daughters to be X lepton neutrino
 
    checkSpinParent( EvtSpinType::SCALAR );
 
    checkSpinDaughter( 0, EvtSpinType::VECTOR );
    checkSpinDaughter( 1, EvtSpinType::DIRAC );
    checkSpinDaughter( 2, EvtSpinType::NEUTRINO );
 
    m_idVector = getDaug( 0 ).getId();
    m_whichfit = int( getArg( 0 ) + 0.1 );
 
    m_ffmodel = std::make_unique<EvtBCVFF>( m_idVector, m_whichfit );
 
    m_calcamp = std::make_unique<EvtSemiLeptonicVectorAmp>();
}
 
void EvtBcVMuNu::initProbMax()
{
    EvtId parId = getParentId();
    EvtId mesonId = getDaug( 0 );
    EvtId lepId = getDaug( 1 );
    EvtId nuId = getDaug( 2 );
 
    int nQ2Bins = 200;
    double maxProb = m_calcamp->CalcMaxProb( parId, mesonId, lepId, nuId,
                                             m_ffmodel.get(), nQ2Bins );
 
    if ( verbose() ) {
        EvtGenReport( EVTGEN_INFO, "EvtBcVMuNu" )
            << "Max prob = " << maxProb << endl;
    }
 
    setProbMax( maxProb );
}