include/Geant4/G4Vee2hadrons.hh

0001 //
0002 // ********************************************************************
0003 // * License and Disclaimer                                           *
0004 // *                                                                  *
0005 // * The  Geant4 software  is  copyright of the Copyright Holders  of *
0006 // * the Geant4 Collaboration.  It is provided  under  the terms  and *
0007 // * conditions of the Geant4 Software License,  included in the file *
0008 // * LICENSE and available at  http://cern.ch/geant4/license .  These *
0009 // * include a list of copyright holders.                             *
0010 // *                                                                  *
0011 // * Neither the authors of this software system, nor their employing *
0012 // * institutes,nor the agencies providing financial support for this *
0013 // * work  make  any representation or  warranty, express or implied, *
0014 // * regarding  this  software system or assume any liability for its *
0015 // * use.  Please see the license in the file  LICENSE  and URL above *
0016 // * for the full disclaimer and the limitation of liability.         *
0017 // *                                                                  *
0018 // * This  code  implementation is the result of  the  scientific and *
0019 // * technical work of the GEANT4 collaboration.                      *
0020 // * By using,  copying,  modifying or  distributing the software (or *
0021 // * any work based  on the software)  you  agree  to acknowledge its *
0022 // * use  in  resulting  scientific  publications,  and indicate your *
0023 // * acceptance of all terms of the Geant4 Software license.          *
0024 // ********************************************************************
0025 //
0026 //
0027 // -------------------------------------------------------------------
0028 //
0029 // GEANT4 Class header file
0030 //
0031 //
0032 // File name:     G4Vee2hadrons
0033 //
0034 // Author:        Vladimir Ivanchenko
0035 //
0036 // Creation date: 12.08.2004
0037 //
0038 // Modifications: 14 July 2014 N. Chikuma revised interfaces
0039 //
0040
0041 //
0042 // Class Description: base class to compute partial cross sections
0043 //                    of e+e- annihilation into hadrons and
0044 //                    sample of final state in the centre mass frame
0045
0046 // -------------------------------------------------------------------
0047 //
0048 #ifndef G4Vee2hadrons_h
0049 #define G4Vee2hadrons_h 1
0050
0051 #include <vector>
0052 #include <CLHEP/Units/SystemOfUnits.h>
0053
0054 #include "globals.hh"
0055 #include "G4ThreeVector.hh"
0056 #include "G4eeCrossSections.hh"
0057 #include "G4PhysicsLinearVector.hh"
0058
0059 class G4DynamicParticle;
0060 class G4PhysicsVector;
0061
0062 class G4Vee2hadrons
0063 {
0064
0065 public:
0066
0067   explicit G4Vee2hadrons(G4eeCrossSections* cr,
0068         G4double vlowEnergy,
0069         G4double vhighEnergy,
0070         G4double vdelta) : cross(cr)
0071   {
0072     lowEnergy  = vlowEnergy;
0073     highEnergy = vhighEnergy;
0074     delta      = vdelta;
0075   };
0076
0077   virtual ~G4Vee2hadrons() {};
0078
0079   virtual G4double PeakEnergy() const = 0;
0080
0081   virtual G4double ComputeCrossSection(G4double) const = 0;
0082
0083   G4PhysicsVector* PhysicsVector() const
0084   {
0085     G4int nbins = std::max(3, G4int((highEnergy - lowEnergy)/delta) );
0086     G4PhysicsVector* pp = new G4PhysicsLinearVector(lowEnergy,highEnergy,nbins);
0087     return pp;
0088   };
0089
0090   virtual void SampleSecondaries(std::vector<G4DynamicParticle*>*,
0091                  G4double, const G4ThreeVector&) = 0;
0092
0093   G4double LowEnergy() const {return lowEnergy;};
0094
0095   G4double HighEnergy() const {return highEnergy;};
0096
0097   // hide assignment operator
0098   G4Vee2hadrons & operator=(const  G4Vee2hadrons &right) = delete;
0099   G4Vee2hadrons(const  G4Vee2hadrons&) = delete;
0100
0101 private:
0102
0103   // parameters of the table
0104   G4double lowEnergy;
0105   G4double highEnergy;
0106   G4double delta;
0107
0108 protected:
0109
0110    G4eeCrossSections* cross;  // class to compute cross section
0111
0112 };
0113
0114 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
0115
0116 #endif