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25 //
26 // INCL++ intra-nuclear cascade model
27 // Alain Boudard, CEA-Saclay, France
28 // Joseph Cugnon, University of Liege, Belgium
29 // Jean-Christophe David, CEA-Saclay, France
30 // Pekka Kaitaniemi, CEA-Saclay, France, and Helsinki Institute of Physics, Finland
31 // Sylvie Leray, CEA-Saclay, France
32 // Davide Mancusi, CEA-Saclay, France
33 //
34 #define INCLXX_IN_GEANT4_MODE 1
35
36 #include "globals.hh"
37
38 #ifndef KinematicsUtils_hh
39 #define KinematicsUtils_hh 1
40
41 #include "G4INCLThreeVector.hh"
42 #include "G4INCLParticle.hh"
43 #include "G4INCLNucleus.hh"
44 #include "G4INCLParticleSpecies.hh"
45
46 namespace G4INCL {
47
48 namespace KinematicsUtils {
49
50 G4double fiveParFit(const G4double a, const G4double b, const G4double c, const G4double d, const G4double e, const G4double x);
51 G4double compute_xs(const std::vector<G4double> coefficients, const G4double pLab);
52
53 void transformToLocalEnergyFrame(Nucleus const * const n, Particle * const p);
54 G4double getLocalEnergy(Nucleus const * const n, Particle * const p);
55
56 ThreeVector makeBoostVector(Particle const * const p1, Particle const * const p2);
57 G4double totalEnergyInCM(Particle const * const p1, Particle const * const p2);
58 G4double squareTotalEnergyInCM(Particle const * const p1, Particle const * const p2);
59
60 /** \brief gives the momentum in the CM frame of two particles.
61 *
62 * The formula is the following:
63 * \f[ p_{CM}^2 = \frac{z^2 - m_1^2 m_2^2}{2 z + m_1^2 + m_2^2} \f]
64 * where \f$z\f$ is the scalar product of the momentum four-vectors:
65 * \f[ z = E_1 E_2 - \vec{p}_1\cdot\vec{p}_2 \f]
66 *
67 * \param p1 pointer to particle 1
68 * \param p2 pointer to particle 2
69 * \return the absolute value of the momentum of any of the two particles in
70 * the CM frame, in MeV/c.
71 */
72 G4double momentumInCM(Particle const * const p1, Particle const * const p2);
73
74 G4double momentumInCM(const G4double E, const G4double M1, const G4double M2);
75
76 /** \brief gives the momentum in the lab frame of two particles.
77 *
78 * Assumes particle 1 carries all the momentum and particle 2 is at rest.
79 *
80 * The formula is the following:
81 * \f[ p_{lab}^2 = \frac{s^2 - 2 s (m_1^2 + m_2^2) + {(m_1^2 - m_2^2)}^2}{4 m_2^2} \f]
82 *
83 * \param p1 pointer to particle 1
84 * \param p2 pointer to particle 2
85 * \return the absolute value of the momentum of particle 1 in the lab frame,
86 * in MeV/c
87 */
88 G4double momentumInLab(Particle const * const p1, Particle const * const p2);
89 G4double momentumInLab(const G4double s, const G4double m1, const G4double m2);
90 G4double sumTotalEnergies(const ParticleList &);
91 ThreeVector sumMomenta(const ParticleList &);
92 G4double energy(const ThreeVector &p, const G4double m);
93 G4double invariantMass(const G4double E, const ThreeVector & p);
94 G4double squareInvariantMass(const G4double E, const ThreeVector & p);
95 G4double gammaFromKineticEnergy(const ParticleSpecies &p, const G4double EKin);
96 }
97 }
98
99 #endif
100