#include <G4INCLNNbarElasticChannel.hh>

Inheritance diagram for G4INCL::NNbarElasticChannel:

Public Member Functions
	NNbarElasticChannel (Particle , Particle )

virtual	~NNbarElasticChannel ()

void	fillFinalState (FinalState *fs)

Public Member Functions inherited from G4INCL::IChannel
	IChannel ()

virtual	~IChannel ()

FinalState *	getFinalState ()

Detailed Description

Definition at line 47 of file G4INCLNNbarElasticChannel.hh.

Constructor & Destructor Documentation

◆ NNbarElasticChannel()

G4INCL::NNbarElasticChannel::NNbarElasticChannel	(	Particle *	p1,
		Particle *	p2 )

Definition at line 49 of file G4INCLNNbarElasticChannel.cc.

50 : particle1(p1), particle2(p2)

51 {}

◆ ~NNbarElasticChannel()

G4INCL::NNbarElasticChannel::~NNbarElasticChannel ( )

virtual

Definition at line 53 of file G4INCLNNbarElasticChannel.cc.

53{}

Member Function Documentation

◆ fillFinalState()

void G4INCL::NNbarElasticChannel::fillFinalState ( FinalState * fs )

virtual

Implements G4INCL::IChannel.

Definition at line 55 of file G4INCLNNbarElasticChannel.cc.

                                                           {
 
        //brief ppbar
        // p pbar -> p pbar (BFMM 2)
        //
        //brief npbar
        // n pbar -> n pbar (BFMM 472)
        //
        //brief nnbar
        // n nbar -> n nbar (same as BFMM 2)
        //
        //brief pnbar 
        // p nbar -> p nbar (same as BFMM 472)
        //
        // 
 
        
 
        Particle *nucleon;
        Particle *antinucleon;
        
        if(particle1->isNucleon()){
            nucleon = particle1;
            antinucleon = particle2;
        }
        else{
            nucleon = particle2;
            antinucleon = particle1;
        }
        
        const G4double sqrtS = KinematicsUtils::totalEnergyInCM(nucleon, antinucleon);
        
        G4double mn=nucleon->getMass();
        G4double my=antinucleon->getMass();
        
        G4double ey=(sqrtS*sqrtS+my*my-mn*mn)/(2*sqrtS);
        G4double en=std::sqrt(ey*ey-my*my+mn*mn);
        nucleon->setEnergy(en);
        antinucleon->setEnergy(ey);
        G4double py=std::sqrt(ey*ey-my*my);
        
        ThreeVector mom_antinucleon = Random::normVector(py);
 
        antinucleon->setMomentum(mom_antinucleon);
        nucleon->setMomentum(-mom_antinucleon);
        
        fs->addModifiedParticle(nucleon);
        fs->addModifiedParticle(antinucleon);
    }