KiraIncomingMomenta is an option for
KiraCreateConfigFiles and other functions of the Kira
interface.
It specifies incoming momenta in the original amplitude. The default
value is Automatic, meaning that FeynHelpers will simply
treat all external momenta present in the topology as incoming ones.
This is the safest way to do the reduction.
Alternatively, the user may want to specify the momenta by hand. In
that case the same should be done also for the options
KiraOutgoingMomenta and
KiraMomentumConservation.
Overview, KiraCreateConfigFiles.