QED corrections about yadism

[cschwan]

Just to reiterate what I said about EW corrections: arxiv:2008.02895 doesn't consider purely weak corrections. For instance imagine a box, where two t-channel W bosons connect the lepton and the quark fermion line and change the flavour of the quark and convert the lepton into a neutrino, and then back again into the old state.

[felixhekhorn]

• Yes, but they only claim to discuss QED corrections, so they are consistent
• Now the question is whether this is a good approximation to the full EW corrections - I guess this might depend on Q2, S, etc. (in their Fig. 2, you can basically swap all lines with W/Z)
• However, I guess one should maybe read the paper more carefully as I can see their point in the second paragraph: Q2 is by definition a QED variable - and this might become a problem ... maybe this issue isn't that easy to implement ... @cschwan or at least we would need to spend some time on the theory side ;-)

[alecandido]

Not going to implement in this PhD/PostDoc (at least not in a year from now)

[cschwan]

There's a chance that SHERPA might be able to do it.