Name: Lucio Kalinger Date: 05/08/14-10:25:53 AM Z


Dear FeynCalc developers,

first of all, thanks for the excellent job.

I was trying to calculate a tree level process with a specific polarisation vector for some incoming photons. Google pointed me to an old paper, http://arxiv.org/abs/hep-ph/9710265, where they quote the function SpecificPolarization[..] which apparently is not there anymore.
In substance, is there a way to specify a polarisation vector so that a polarized amplitude can be calculated simply by contracting this specific vector with the remaining part of the latter?

Thank you for your help,
LK