**Next message:**Davide Racco: "Re: Possible bug with PaVeReduce in FeynCalc 9.2"**Previous message:**Vladyslav Shtabovenko: "Re: Possible bug with PaVeReduce in FeynCalc 9.2"**Maybe in reply to:**Pablo Sanchez Puertas: "E0 scalar function"**Next in thread:**Vladyslav Shtabovenko: "Re: E0 scalar function"**Reply:**Vladyslav Shtabovenko: "Re: E0 scalar function"**Messages sorted by:**[ date ] [ thread ] [ subject ] [ author ]**Mail actions:**[ respond to this message ] [ mail a new topic ]

Hello again.

I just reinstalled FeynCalc and is working fine! :D

Thanks for the continuous support with the program!

Besides, but that would probably be a new thread, I

would like to comment on the tensor 5-point function.

(I don't really need it at the moment as I have

alternative ways to deal with it, but could be of interest)

I could notice that your implmentation relying in

Eq. (4.54) from

https://arxiv.org/pdf/0709.1075.pdf

holds (quoting from the article above)

" [...] if the Lorentz decomposition of the appearing

tensor integrals contains only momenta and no metric

tensors, which is the case for N geq. 6 or P = 0."

Particularly, for the 5-point function (N=4), that implies

that such is not generally the case whenever one deals

with a tensor instead of a scalar function.

If such is the case, there are additional terms which are

documented (also from Denner and Dittmaier) in

http://inspirehep.net/record/605032

see the "V(and U) terms" there or Eq.(2.21). The terms

implemented in "NPointto4Point.m" are only those in the

first summation. I could check that, though the notebook I

have is a bit messy. Let me know uf you are interested and

I could try to provide you with a minimal working example

of the isse.

Pablo

**Next message:**Davide Racco: "Re: Possible bug with PaVeReduce in FeynCalc 9.2"**Previous message:**Vladyslav Shtabovenko: "Re: Possible bug with PaVeReduce in FeynCalc 9.2"**Maybe in reply to:**Pablo Sanchez Puertas: "E0 scalar function"**Next in thread:**Vladyslav Shtabovenko: "Re: E0 scalar function"**Reply:**Vladyslav Shtabovenko: "Re: E0 scalar function"**Messages sorted by:**[ date ] [ thread ] [ subject ] [ author ]**Mail actions:**[ respond to this message ] [ mail a new topic ]

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