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 G4HadronElasticPhysics
 ----------------------
 Hadron nuclear elastic process for all hadrons:
 - proton
   - cross section: Barashenkov-Glauber-Gribov
   - final-state:   Chips
 - neutron:
   - cross section: G4NeutronElasticXS           
   - final-state:   Chips
 - charged pions:
   - cross section: Barashenkov-Glauber-Gribov
   - final-state:   Starkov's model (G4ElasticHadrNucleusHE) for all energies
 - kaons, hyperons, anti-hyperons, charm and bottom hadrons
   - cross section: Glauber-Gribov
   - final-state:   Gheisha
 - deuteron, triton, He3, alpha 
   - cross section: Glauber-Gribov
   - final-state:   Gheisha
 - anti_proton, anti_neutron, anti_deuteron, anti_triton, anti_He3, 
   anti_alpha
   - cross-section: Galoyan-Uzhinsky-Glauber-Gribov
   - final-state:   Galoyan-Uzhinsky model above 100 MeV/nucleon,
                    Gheisha below.
 - charm and bottom hadrons, light hypernuclei
   - cross section: Glauber-Gribov
   - final-state:   Gheisha
 - light anti-hypernuclei
   - cross-section: Galoyan-Uzhinsky-Glauber-Gribov
   - final-state:   Gheisha

 G4HadronElasticPhysicsHP
 ------------------------
 As G4HadronElasticPhysics, with the only difference that for neutrons
 below 20 MeV, NeutronHP elastic is used (for both cross section and
 final-state model).

 G4HadronElasticPhysicsHPT
 -------------------------
 As G4HadronElasticPhysicsHP, with the only difference that for neutrons
 below 4 eV, a special treatment of elastic scattering is activated.
 This special treatment, called Thermal Scattering Law (TSL), is based on
 the S(alpha, beta) approach, which relieas on both experimental measurements
 and molecular dynamics calculations.

 G4HadronElasticPhysicsLEND
 --------------------------
 As G4HadronElasticPhysics, with the only difference that for neutrons
 below 20 MeV, LEND elastic is used (for both cross section and 
 final-state model).
 
 G4HadronElasticPhysicsXS
 ------------------------
 Now exactly as G4HadronElasticPhysics.

 G4HadronHElasticPhysics
 -----------------------
 - proton
   - cross section: Barashenkov-Glauber-Gribov
   - final-state:   Diffuse model, except for Hydrogen where Chips is used,
                    above 10 MeV, and Gheisha below
 - neutron:
   - cross section: G4NeutronElasticXS
   - final-state:   Diffuse model, except for Hydrogen where Chips is used,
                    above 10 MeV, and Gheisha below
 - charged pions:
   - cross section: Barashenkov-Glauber-Gribov
   - final-state:   Diffuse model, except for Hydrogen where Chips is used,
                    above 10 MeV, and Gheisha below
 - kaons, hyperons, anti-hyperons, charm and bottom hadrons
   - cross section: Glauber-Gribov
   - final-state:   Gheisha
 - deuteron, triton, He3, alpha
   - cross section: Glauber-Gribov
   - final-state:   Gheisha
 - anti_proton, anti_neutron
   - cross section: Galoyan-Uzhinsky-Glauber-Gribov
   - final-state:   Galoyan-Uzhinsky model above 100 MeV/nucleon,
                    Chips below.
 - anti_deuteron, anti_triton, anti_He3, anti_alpha
   - cross-section: Galoyan-Uzhinsky-Glauber-Gribov
   - final-state:   Galoyan-Uzhinsky model above 100 MeV/nucleon,
                    Gheisha below.
 
 G4IonElasticPhysics
 -------------------
 As G4HadronElasticPhysics, with the addition of elastic process for
 generic ion:
 - cross section: Glauber-Gribov
 - final-state:   Diffuse model


 G4HadronDElasticPhysics
 -----------------------
 Hadron nuclear elastic process for all hadrons:
 - proton and charged pions:
   - cross section: Barashenkov-Glauber-Gribov
   - final-state:   Diffuse model where applicable, else Gheisha
 - neutron:
   - cross section: G4NeutronElasticXS           
   - final-state:   Diffuse model where applicable, else Gheisha
 - kaons, hyperons, anti-hyperons, charm and bottom hadrons,
   deuteron, triton, He3, alpha
   - cross section: Glauber-Gribov
   - final-state:   Gheisha
 - anti_proton, anti_neutron, anti_deuteron, anti_triton, anti_He3, 
   anti_alpha
   - cross-section: Galoyan-Uzhinsky-Glauber-Gribov
   - final-state:   Galoyan-Uzhinsky model above 100 MeV/nucleon,
                    Gheisha below.

 G4ChargeExchangePhysics
 -----------------------
 Hadron nuclear coherent charge exchange, used in this constructor
 only for nucleons and charged pions.

