Gabriele Cosmo
100 lines
3.4 KiB
C++
100 lines
3.4 KiB
C++
//
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// ********************************************************************
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// * DISCLAIMER *
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// * *
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// * The following disclaimer summarizes all the specific disclaimers *
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// * of contributors to this software. The specific disclaimers,which *
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// * govern, are listed with their locations in: *
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// * http://cern.ch/geant4/license *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. *
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// * *
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// * This code implementation is the intellectual property of the *
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// * GEANT4 collaboration. *
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// * By copying, distributing or modifying the Program (or any work *
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// * based on the Program) you indicate your acceptance of this *
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// * statement, and all its terms. *
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// ********************************************************************
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//
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//
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// $Id: G4VScatteringCollision.hh,v 1.3 2002/12/12 19:17:43 gunter Exp $ //
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// -------------------------------------------------------------------
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// GEANT4 Class file
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//
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// For information related to this code contact:
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//
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// File name: G4VElasticCollision
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//
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// Author: Maria Grazia Pia
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//
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// Creation date: 15 April 1999
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//
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// Modifications:
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//
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// -------------------------------------------------------------------
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#ifndef G4VSCATTERINGCOLLISION_HH
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#define G4VSCATTERINGCOLLISION_HH
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#include "globals.hh"
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#include "G4VCollision.hh"
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#include "G4VCrossSectionSource.hh"
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#include "G4VAngularDistribution.hh"
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#include "G4KineticTrackVector.hh"
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class G4KineticTrack;
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class G4VScatteringCollision : public G4VCollision
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{
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public:
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G4VScatteringCollision();
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virtual ~G4VScatteringCollision();
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G4bool operator==(const G4VScatteringCollision &right) const;
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G4bool operator!=(const G4VScatteringCollision &right) const;
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virtual G4KineticTrackVector* FinalState(const G4KineticTrack& trk1,
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const G4KineticTrack& trk2) const;
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virtual const G4VAngularDistribution* GetAngularDistribution() const
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{
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return theAngularDistribution;
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}
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protected:
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virtual const G4std::vector<const G4ParticleDefinition*> & GetOutgoingParticles() const = 0;
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private:
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double BrWigInt0(const double x, const double gamma, const double m0) const
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{ return 2.0*gamma*atan( 2.0 * (x-m0)/ gamma ); }
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G4double BrWigInt1(const G4double x, const G4double gamma, const G4double m0) const
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{ return 0.5*gamma*gamma*log( (x-m0)*(x-m0)+gamma*gamma/4.0 ) + m0*BrWigInt0(x,gamma,m0); }
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double BrWigInv(const double x, const double gamma, const double m0) const
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{ return 0.5*gamma*tan( 0.5*x/gamma )+m0; }
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double SampleResonanceMass(const double poleMass,
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const double width,
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const double minMass,
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const double maxMass) const;
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private:
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G4VAngularDistribution * theAngularDistribution;
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};
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#endif
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