compute_spin_correlation_rcl

compute_spin_correlation_rcl(npr, p, j, v, order='LO')

Computes the spin-correlated summed squared amplitude, where the polarization vector of particle j, necessarily being a gluon or photon, is is substituted for the user-defined polarization vector v.

Parameters

  • npr (int) – process number

  • p (float[l][4]) – external momenta of the process with l legs

  • j (int) – photon/gluon leg

  • v (complex[4]) – photon/gluon polarization vector

Returns

(A2sc, momcheck)

Return type

(float, bool)