PaXEvaluateIR returns zero

[lisabiermann]

Hi,

I cannot reproduce the result of PaXEvaluateIR that is shown in 1611.06793 (p. 18) for B0[SPD[p, p], 0, m^2]. Executing the following just returns 0:

$LoadAddOns = {"FeynHelpers"};
<< FeynCalc`
PaXEvaluateIR[B0[SPD[p, p], 0, m^2], PaXSeries -> {{pp, m^2, 1}}, 
 PaXAnalytic -> True]

Could you potentially provide me with any insight on what might be going wrong on my side? (PaXEvaluateUV returns 1/epsUV as expected.)
I'm using Mathematica 12.1, FeynCalc 9.3.1, FeynHelpers 1.3.0 on openSUSE Leap 15.3.

Thanks and cheers,
Lisa

[vsht]

Hi,

you are missing SPD[p]=pp as on p.17 of 1611.06793. Otherwise, pp is not present inside the integral and there is nothing
to expand around.

Cheers,
Vlad

[lisabiermann]

Thanks a lot!