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/hadronTensor_ResProd [ Modules ]

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NAME

module hadronTensor_ResProd

PURPOSE

This module defines the hadronic tensors for resonance production by EM- and weak currents


hadronTensor_ResProd/debugFlag [ Global module-variables ]

[ Top ] [ hadronTensor_ResProd ] [ Global module-variables ]

SOURCE

  logical, parameter :: debugFlag=.false.

PURPOSE


hadronTensor_ResProd/speedup [ Global module-variables ]

[ Top ] [ hadronTensor_ResProd ] [ Global module-variables ]

SOURCE

  logical,save      :: speedup=.true.

PURPOSE


hadronTensor_ResProd/HadronTensor_ResProd [ Namelists ]

[ Top ] [ hadronTensor_ResProd ] [ Namelists ]

NAME

NAMELIST /HadronTensor_ResProd/

PURPOSE

Namelist for module hadronTensor_ResProd includes:


hadronTensor_ResProd/hadronTensor_R [ Functions ]

[ Top ] [ hadronTensor_ResProd ] [ Functions ]

NAME

function hadronTensor_R(pi,pf,resID,targetCharge,process,matrix) &

  result(success)

PURPOSE

This function returns the hadronic tensor for resonance production of the resonance "resID" by a current type defined by "process" (e.g. Gamma* N -> R).

INPUTS

  • real, dimension(0:3) :: pi -- 4-momentum of incoming nucleon
  • real, dimension(0:3) :: pf -- 4-momentum of outgoing resonance
  • integer :: resID -- ID of resonance
  • integer :: process -- type of the process (EM, CC, NC)
  • integer :: targetCharge -- Charge of target nucleon

OUTPUT

  • complex, dimension(0:3,0:3) :: matrix -- H^mu nu
  • logical :: success -- true if resonance has coupling strength to the process; false if there is no coupling, therefore H^mu nu=0

NOTES

  • We use the Peskin notation where the spin sum(u(p) ubar(p))=slashed(p)+m !


hadronTensor_R/writeError [ Subroutines ]

[ Top ] [ hadronTensor_R ] [ Subroutines ]

PURPOSE

Error Message


hadronTensor_ResProd/hadronTensor_1_2 [ Functions ]

[ Top ] [ hadronTensor_ResProd ] [ Functions ]

NAME

function hadronTensor_1_2(pi,pf,parity,G,GA,resID) result(matrix)

PURPOSE

This function returns the hadronic tensor for spin=1/2 resonances.

INPUTS

  • real, dimension(1:2) :: F -- Vector or EM-Form factors
  • real, dimension(1:2) :: FA -- Axial form factors
  • real, dimension(0:3) :: pi -- 4-momentum of incoming nucleon
  • real, dimension(0:3) :: pf -- 4-momentum of outgoing resonance
  • integer :: resID -- ID of resonance
  • integer :: parity -- Parity of resonance
  • integer :: process -- type of the process (EM, CC, NC)

OUTPUT

  • complex, dimension(0:3,0:3) :: matrix -- H^mu nu


hadronTensor_1_2/j_pos [ Functions ]

[ Top ] [ hadronTensor_1_2 ] [ Functions ]

NAME

function j_pos(mu) result(matrix)

PURPOSE

This function the hadronic flux "J^mu" for resonances of positive parity

INPUTS

integer, intent(in) :: mu

OUTPUT

  • complex, dimension(0:3,0:3) :: matrix


hadronTensor_1_2/j_neg [ Functions ]

[ Top ] [ hadronTensor_1_2 ] [ Functions ]

NAME

function j_neg(mu) result(matrix)

PURPOSE

This function the hadronic flux "J^mu" for resonances of negative parity

INPUTS

integer, intent(in) :: mu

OUTPUT

  • complex, dimension(0:3,0:3) :: matrix


hadronTensor_1_2/j_dagger [ Functions ]

[ Top ] [ hadronTensor_1_2 ] [ Functions ]

NAME

function j_neg_dagger(mu) result(matrix)

PURPOSE

This function returns "gamma_0 (J^mu)^dagger gamma_0" for resonances of negative parity

INPUTS

integer, intent(in) :: mu

OUTPUT

  • complex, dimension(0:3,0:3) :: matrix


hadronTensor_ResProd/hadronTensor_3_2 [ Functions ]

[ Top ] [ hadronTensor_ResProd ] [ Functions ]

NAME

function hadronTensor_3_2(pi,pf,parity,formfactor,resID) result(matrix)

PURPOSE

This function returns the hadronic tensor for spin=3/2 resonances.

INPUTS

  • real, dimension(0:3) :: pi -- 4-momentum of incoming nucleon
  • real, dimension(0:3) :: pf -- 4-momentum of outgoing resonance
  • integer,intent(in) :: parity -- Parity of resonance
  • real, dimension(1:8) :: FormFactor -- 1-4: Vector or EM, 5-8: Axial form factors
  • integer :: resID -- ID of resonance
  • integer :: process -- type of the process (EM, CC, NC)

OUTPUT

  • complex, dimension(0:3,0:3) :: matrix -- H^mu nu


hadronTensor_3_2/j_pos [ Functions ]

[ Top ] [ hadronTensor_3_2 ] [ Functions ]

NAME

function j_pos(lambda,nu) result(matrix)

PURPOSE

  • This function evaluates the hadronic flux "J^lambda nu" for resonances
  • of positive parity
  • Same as negative parity case times gamma(5).

INPUTS

  • integer, intent(in) :: lambda,nu -- lambda is the lorentz index which is contracted with the 3/2 spinor

OUTPUT

  • complex, dimension(0:3,0:3) :: matrix


hadronTensor_3_2/j_neg [ Functions ]

[ Top ] [ hadronTensor_3_2 ] [ Functions ]

NAME

function j_neg(alpha,nu) result(matrix)

PURPOSE

  • This function evaluates the hadronic flux "J^lambda nu" for resonances of negative parity
  • See Phys Rev D74, 014009 (2006), eq. 4.3

INPUTS

  • integer, intent(in) :: alpha,nu -- lambda is the lorentz index which is contracted with the 3/2 spinor

OUTPUT

  • complex, dimension(0:3,0:3) :: matrix


hadronTensor_3_2/j_dagger [ Functions ]

[ Top ] [ hadronTensor_3_2 ] [ Functions ]

NAME

function j_dagger(alpha,nu) result(matrix)

PURPOSE

  • This function evaluates "gamma_o (J^lambda nu)^dagger gamm_o" for resonances of negative parity
  • See Phys Rev D74, 014009 (2006), eq. 4.3

INPUTS

  • integer, intent(in) :: alpha,nu -- lambda is the lorentz index which is contracted with the 3/2 spinor

OUTPUT

  • complex, dimension(0:3,0:3) :: matrix


hadronTensor_ResProd/parityError [ Subroutines ]

[ Top ] [ hadronTensor_ResProd ] [ Subroutines ]

PURPOSE

Error Message