Set the print level for squared amplitudes to n.

Parameters:n (int) –

print level

  • n = 0: nothing is printed
  • n = 1: the non vanishining squared amplitudes A2
    summed/averaged over colour and helicities are printed at LO and NLO (if NLO is computed)
  • n = 2: in addition to n=1, the NLO (if computed) contributions
    to A2 from bare-loop, counterterms and rational part are also printed
  • n = 3: prints the squared helicity amplitudes
    summed/averaged over colour at LO and NLO (if NLO is computed) for each helicity