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/gamma2Pi_Xsections_luis [ Modules ]

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NAME

module gamma2Pi_Xsections_luis

PURPOSE

Includes the total cross sections for gamma Nucleon -> Nucleon Pion Pion processes according to Tejedor.


gamma2Pi_Xsections_luis/minva [ Functions ]

[ Top ] [ gamma2Pi_Xsections_luis ] [ Functions ]

NAME

function minva(photonEnergy,channel,betaToLRF,mediumAtPosition,position) Result(totalXsection)

INPUTS

  • real, intent(in) :: photonEnergy [GEV]
  • integer, intent(in) :: channel * 1: gamma p -> pi+ pi- p * 2: gamma p -> pi+ pi0 n * 3: gamma p -> pi0 pi0 p * 4: gamma n -> pi+ pi- n * 5: gamma n -> pi- pi0 p * 6: gamma n -> pi0 pi0 n
  • type(medium) ,intent(in) :: mediumAtPosition
  • real, dimension(1:3) ,intent(in) :: betaToLRF -- velocity of LRF
  • real, dimension(1:3) ,intent(in) :: position

OUTPUT

real :: totalXsection -- in [mb]

PURPOSE

  • Photoproduction of 2pi pairs according to Tejedor, Gomez et al.
  • Integration over 3-dim phase space of outgoing nucleon and pion pair at fixed photon energy