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/kaonNucleon [ Modules ]

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NAME

module kaonNucleon

PURPOSE

Includes the cross sections for kaon-nucleon and antikaon-antinucleon elastic and inelastic scattering

Public routines:


kaonNucleon/kaonNuc [ Subroutines ]

[ Top ] [ kaonNucleon ] [ Subroutines ]

NAME

subroutine kaonNuc (srts,teilchenIN,teilchenOUT,sigmaTot,sigmaElast,plotFlag)

PURPOSE

Evaluates the cross sections for * K N -> K N, * Kbar Nbar -> Kbar Nbar, * K N -> K N pi, * Kbar Nbar -> Kbar Nbar pi and returns also a "preevent"

Possible final states are :

This routine does a Monte-Carlo-decision according to the partial cross sections to decide on a final state with maximal 3 final state particles. These are returned in the vector teilchenOut. The kinematics of these teilchen is only fixed in the case of a single produced resonance. Otherwise the kinematics still need to be established. The result is:

  • type(preEvent),dimension(1:3), intent(out) :: teilchenOut ! outgoing particles

The cross sections are based on parameterization by M. Effenberger.

INPUTS

  • real, intent(in) :: srts ! sqrt(s) in the process
  • type(particle),dimension(1:2), intent(in) :: teilchenIn ! colliding particles

Debugging:

  • logical, intent(in),optional :: plotFlag ! Switch on plotting of the Xsections

OUTPUT

  • real, intent(out) :: sigmaTot ! total Xsection
  • real, intent(out) :: sigmaElast ! elastic Xsection


kaonNuc/evaluateXsections [ Subroutines ]

[ Top ] [ kaonNuc ] [ Subroutines ]

NAME

subroutine evaluateXsections

PURPOSE

Evaluates K N -> K N and K N -> K N pi cross sections

NOTES

There are no resonance contributions to K N scattering.


kaonNuc/makeDecision [ Subroutines ]

[ Top ] [ kaonNuc ] [ Subroutines ]

NAME

subroutine makeDecision

PURPOSE

Chooses randomly one of possible outgoing channels in kaon-nucleon collision. Outgoing channels are: K N and K N pi. Also the charges of outgoing particles are selected.

NOTES


kaonNuc/makeOutput [ Subroutines ]

[ Top ] [ kaonNuc ] [ Subroutines ]

NAME

subroutine makeOutput

PURPOSE

Writes all cross sections to file as function of srts and plab [GeV] . Filenames:

  • 'KN_sigTotElast.dat' : sigmaTot, sigmaElast
  • 'KN_KN_KNpi.dat' : K N and and K N pi outgoing channels