hazma.rambo.compute_decay_width¶

hazma.rambo.compute_decay_width(num_ps_pts, fsp_masses, cme, mat_elem_sqrd=<function <lambda>>, num_cpus=None)¶

Computes the cross section for a given process.

Parameters:

Parameters:	num_ps_pts (int) – Total number of phase space points to generate. masses (numpy.ndarray) – List of masses of the initial state and final state particles. cme (double) – Center-of-mass-energy of the process. mat_elem_sqrd ((double)(numpy.ndarray) {lambda klist: 1}) – Function for the matrix element squared. num_cpus (int {None}) – Number of cpus to use in parallel with rambo. If not specified, 75% of the cpus will be used.
Returns:	cross_section (double) – Cross section for X -> final state particles(fsp), where the fsp have masses masses and the process X -> fsp has a squared matrix element of mat_elem_sqrd. std (double) – Estimated error in cross section.

num_ps_pts (int) – Total number of phase space points to generate.
masses (numpy.ndarray) – List of masses of the initial state and final state particles.
cme (double) – Center-of-mass-energy of the process.
mat_elem_sqrd ((double)(numpy.ndarray) {lambda klist: 1}) – Function for the matrix element squared.
num_cpus (int {None}) – Number of cpus to use in parallel with rambo. If not specified, 75% of the cpus will be used.

Returns:

cross_section (double) – Cross section for X -> final state particles(fsp), where the fsp have masses masses and the process X -> fsp has a squared matrix element of mat_elem_sqrd.
std (double) – Estimated error in cross section.