Typically one keeps gauge parameters unless the amplitude should be gauge invariant? Should your result be gauge invariant?
> On Feb 28, 2019, at 12:14 AM, john <noreply@feyncalc.org> wrote:
>
> Hello,I have written a FeynRules model and used FeynArts to create diagrams and finally FeynCalc to regularize the amplitude but the are strange gauge parameters "Subscript[\[Xi], S(Gen3)]",.... appearing in the amplitude.I have just one massless vector V[1] and setting GaugeXi to 1 does not help getting rid of these.Please help me with this.
>
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