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/helicityAmplitudes [ Modules ]

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NAME

module helicityAmplitudes

PURPOSE


helicityAmplitudes/get_helicityAmplitudes [ Subroutines ]

[ Top ] [ helicityAmplitudes ] [ Subroutines ]

NAME

subroutine get_helicityAmplitudes(targetCharge,resonanceID,QSquared,A1,A3,S1,MAID_version_in)

PURPOSE

  • Interface for the MAID helicity amplitudes. Returns the helicity amplitudes for a given resonance.

INPUTS

  • real, intent(in) :: QSquared ! QSquared in GeV**2
  • integer, intent(in) :: targetCharge ! Charge of target nucleon
  • integer, intent(in) :: resonanceID ! ID of the resonance according to GiBUU
  • integer,optional, intent(in) :: MAID_version_in MAID_version = 1 : use MAID 2003 MAID_version = 2 : use MAID 2005

OUTPUT

  • real, intent(out):: A1,A3,S1 ! In units of GeV^(-1/2)

NOTES

  • In this routine I am converting from real to real(8) since the MAID routines are made for real(8) input and output.