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/parBarMes_HighEnergy [ Modules ]

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NAME

module parBarMes_HighEnergy

PURPOSE

Includes all routines which are parametrizations of "baryon meson -> X" data for the high-energy region.


parBarMes_HighEnergy/paramBarMesHE [ Subroutines ]

[ Top ] [ parBarMes_HighEnergy ] [ Subroutines ]

NAME

subroutine paramBarMesHE (srts, idM, idB, izM, izB, media, sigma, sigmael)

PURPOSE

Calculates elastic and total high-energy meson-baryon cross sections.

INPUTS

  • real :: srts -- SQRT(s) (free)
  • integer :: idM,idB -- ID of meson and baryon
  • integer :: izM,izB -- charge of meson and baryon
  • type(medium) :: media -- medium at position

OUTPUT

  • real :: sigma -- sigma(m B -> X) (in mb)
  • real :: sigel -- sigma(m B -> m B) (in mb)

NOTES

  • Expects that anti-baryons have (-) sign in the ID (e.g. antinucleon=-1). Expects that mesons are no anti-mesons!!
  • The elastic cross section of V N -> V N is derived from the gamma N -> V N cross section.
  • Here we call corresponding single standing routines and perform some modifications in order to guarantee a smoother transition from low to high energy.
  • This routine was formerly known as "fritziCS".


parBarMes_HighEnergy/paramBarMesHE_v [ Subroutines ]

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NAME

subroutine paramBarMesHE_v(srts,sigma)

PURPOSE

Pythia parametrizations of the total vector meson nucleon cross sections

INPUTS

  • real :: srts -- SQRT(s) (free)

OUTPUT

  • real, dimension(4) :: sigma -- sigma(V N -> X) (in mb)

NOTES

These are pomeron/reggeon parametrizations for V N -> X cross section according Donnachie and Landshoff for V = rho0, omega, phi, J/Psi. The parameters are taken from PYTHIA.

Thresholds are not considered.

This was formerly known as "vectot"


parBarMes_HighEnergy/paramBarMesHE_pion [ Subroutines ]

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NAME

subroutine paramBarMesHE_pion(srts,sigma,sigel)

INPUTS

  • real :: srts -- SQRT(s) (free)

OUTPUT

  • real, dimension(-1:1) :: sigma -- sigma(pi N -> X) (in mb)
  • real, dimension(-1:1) :: sigel -- sigma(pi N -> pi N) (in mb)

The indices correspond to the charge states:

  • -1 -> pi- p
  • 0 -> ( pi+ p + pi- p)/2
  • +1 -> pi p

NOTES

This are more or less brute force fits to experimental data.

Reference ???

This was formerly known as "pitot"


parBarMes_HighEnergy/paramBarMesHE_kaon [ Subroutines ]

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NAME

subroutine paramBarMesHE_kaon (srts, sigma, sigel)

INPUTS

  • real :: srts -- SQRT(s) (free)

OUTPUT

  • real, dimension(-2:2) :: sigma -- sigma(K N -> X) (in mb)
  • real, dimension(-2:2) :: sigel -- sigma(K N -> K N) (in mb)

The indices correspond to the charge states:

  • -2 -> K+ p, K0 n, K- p~, K0~ n~
  • -1 -> K+ n, K0 p, K- n~, K0~ p~
  • +1 -> K- n, K0~ p, K+ n~, K0 p~
  • +2 -> K- p, K0~ n, K+ p~, K0 n~

NOTES

These are more or less brute force fits to experimental data. Taken from PDG review, L. Montanet et al., PRD 50, 1173 (1994). This was formerly known as "kaontot".