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src/interface/gd0 [ Functions ]

[ Top ] [ Functions ]

NAME

  Function gd0

USAGE

  complex = gd0(s1,s2,s3,s4,s,t,m1,m2,m3,m4,mu2,eps_flag)

DESCRIPTION

  This function is the scalar LoopTools D0 function. 
  There are two arguments more which are the renormalisation 
  scale squared and a flag which selects the coefficient of 
  the Laurent series in epsilon

INPUTS

  * s1 -- a real (type ki), p1^2
  * s2 -- a real (type ki), p2^2
  * s3 -- a real (type ki), p3^2
  * s4 -- a real (type ki), p4^2
  * s -- a real (type ki), (p1+p2)^2
  * t -- a real (type ki), (p2+p3)^2
  * m1 -- a real (type ki), mass^2 of propagator 4
  * m2 -- a real (type ki), mass^2 of propagator 1
  * m3 -- a real (type ki), mass^2 of propagator 2
  * m4 -- a real (type ki), mass^2 of propagator 3
  * mu2 -- a real (type ki), renormalisation scale squared
  * eps_flag -- an integer, a flag to select the coefficient in front the power of epsilon

SIDE EFFECTS

  No side effect

RETURN VALUE

  It returns a complex (type ki) corresponding
  to the real part, imaginary part of the coefficient in front 1/epsilon^2 (eps_flag=-2),
  the real part, imaginary part of the 1/epsilon term (eps_flag=-1) and the real part,
  imaginary part of the constant term (eps_flag=0).

USES

  * precision (src/module/precision_golem.f90)
  * matrice_s, only: set_ref, s_mat, allocation_s, deallocation_s, init_invs (src/kinematic/matrice_s.f90)
  * form_factor_type, only: form_factor (src/module/form_factor_type.f90)
  * form_factor_4p (src/form_factor/form_factor_4p.f90)
  * cache, only: allocate_cache, clear_cache (src/module/cache.f90)
  * constante, only : b_null (src/module/constante.f90)
  * sortie_erreur, only : tab_erreur_par,catch_exception (src/module/sortie_erreur.f90)

src/interface/gd0c [ Functions ]

[ Top ] [ Functions ]

NAME

  Function gd0c

USAGE

  complex = gd0c(s1,s2,s3,s4,s,t,m1,m2,m3,m4,mu2,eps_flag)

DESCRIPTION

  This function is the scalar LoopTools D0 function. 
  There are two arguments more which are the renormalisation 
  scale squared and a flag which selects the coefficient of 
  the Laurent series in epsilon

INPUTS

  * s1 -- a complex (type ki), p1^2
  * s2 -- a complex (type ki), p2^2
  * s3 -- a complex (type ki), p3^2
  * s4 -- a complex (type ki), p4^2
  * s -- a complex (type ki), (p1+p2)^2
  * t -- a complex (type ki), (p2+p3)^2
  * m1 -- a complex (type ki), mass^2 of propagator 4
  * m2 -- a complex (type ki), mass^2 of propagator 1
  * m3 -- a complex (type ki), mass^2 of propagator 2
  * m4 -- a complex (type ki), mass^2 of propagator 3
  * mu2 -- a real (type ki), renormalisation scale squared
  * eps_flag -- an integer, a flag to select the coefficient in front the power of epsilon

SIDE EFFECTS

  No side effect

RETURN VALUE

  It returns a complex (type ki) corresponding
  to the real part, imaginary part of the coefficient in front 1/epsilon^2 (eps_flag=-2),
  the real part, imaginary part of the 1/epsilon term (eps_flag=-1) and the real part,
  imaginary part of the constant term (eps_flag=0).

USES

  * precision (src/module/precision_golem.f90)
  * matrice_s, only: set_ref, s_mat, allocation_s, deallocation_s, init_invs (src/kinematic/matrice_s.f90)
  * form_factor_type, only: form_factor (src/module/form_factor_type.f90)
  * form_factor_4p (src/form_factor/form_factor_4p.f90)
  * cache, only: allocate_cache, clear_cache (src/module/cache.f90)
  * constante, only : b_null (src/module/constante.f90)
  * sortie_erreur, only : tab_erreur_par,catch_exception (src/module/sortie_erreur.f90)

src/interface/gd0i [ Functions ]

[ Top ] [ Functions ]

NAME

  Function gd0i

USAGE

  complex = gd0i(idt,s1,s2,s3,s4,s,t,m1,m2,m3,m4,mu2,eps_flag)

DESCRIPTION

  This function is the LoopTools D0i function. 
  The first argument is a character of length <= 6
  There are two arguments more which are the renormalisation 
  scale squared and a flag which selects the coefficient of 
  the Laurent series in epsilon

INPUTS

  * idt -- a character of length <= 6, the type of form factors
  * s1 -- a real (type ki), p1^2
  * s2 -- a real (type ki), p2^2
  * s3 -- a real (type ki), p3^2
  * s4 -- a real (type ki), p4^2
  * s -- a real (type ki), (p1+p2)^2
  * t -- a real (type ki), (p2+p3)^2
  * m1 -- a real (type ki), mass^2 of propagator 4
  * m2 -- a real (type ki), mass^2 of propagator 1
  * m3 -- a real (type ki), mass^2 of propagator 2
  * m4 -- a real (type ki), mass^2 of propagator 3
  * mu2 -- a real (type ki), renormalisation scale squared
  * eps_flag -- an integer, a flag to select the coefficient in front the power of epsilon

SIDE EFFECTS

  No side effect

RETURN VALUE

  It returns a complex (type ki) corresponding
  to the real part, imaginary part of the coefficient in front 1/epsilon^2 (eps_flag=-2),
  the real part, imaginary part of the 1/epsilon term (eps_flag=-1) and the real part,
  imaginary part of the constant term (eps_flag=0).

USES

  * precision (src/module/precision_golem.f90)
  * matrice_s, only: set_ref, s_mat, allocation_s, deallocation_s, init_invs (src/kinematic/matrice_s.f90)
  * form_factor_type, only: form_factor (src/module/form_factor_type.f90)
  * form_factor_4p (src/form_factor/form_factor_4p.f90)
  * form_factor_higher_ranks (src/form_factor/form_factor_higher_ranks.f90)
  * cache, only: allocate_cache, clear_cache (src/module/cache.f90)
  * constante, only : b_null (src/module/constante.f90)
  * tool_lt_to_golem, only : extract (src/interface/tool_lt_to_golem.f90)
  * sortie_erreur, only : tab_erreur_par,catch_exception (src/module/sortie_erreur.f90)

EXAMPLE