Hi all,
In the MUSES collaboration meeting we’ve been discussing the pQCD constraints. I just want to put the references of what is currently used.
The pQCD constraints paper is: https://journals.aps.org/prl/pdf/10.1103/PhysRevLett.128.202701
where they explicitly cite [55] that is https://journals.aps.org/prl/pdf/10.1103/PhysRevLett.127.162003 where I got the screen shot grab:
Also, the more current work on N3LO is also definitely massless https://arxiv.org/pdf/2501.17921