Mandelstam
is an option for DiracTrace
, OneLoop
, OneLoopSum
and TrickMandelstam
. A typical setting is Mandelstam -> {s, t, u, m1^2+m2^2+m3^2+m4^2}
, which implies . If other than four-particle processes are calculated, the setting should be Mandelstam -> {}
.
Overview, DiracTrace, OneLoop, OneLoopSum, TrickMandelstam, SetMandelstam.