select_power_LoopAmpl_rcl

select_power_LoopAmpl_rcl(npr, cid, pow)

Selects for the process with process number npr the contribution to the Loop amplitude with power power in the fundamental order cid.

Parameters:
  • npr (int) – process number
  • cid (str) – fundamental coupling id
  • pow (int) – power in fundamental coupling

E.g. the selection of the Born contribution \(e^4 g_\mathrm{s}^2\):

select_power_LoopAmpl_rcl(npr, 'QCD', 2)
select_power_LoopAmpl_rcl(npr, 'QED', 4)