Proton Spin Puzzle Solved By Supercomputer

Endaxi arXiv for preliminary report in 2016.

https://arxiv.org/abs/1609.00253

Screenshot of the 2017 paper .up,down,strange.

what about neutron..udd..next paper??

I worry that this might be a little bit of curve fitting together with wishful thinking to make the spin come out to 1/2, especially the sea quark/gluon contribution. (And on inspection I note that the bars for the individual contributions do not cleanly add up to the total, so there's something subtle going on in the graphs.) Has anyone read the paper and gotten a sense of whether this is the case or not?

Eric wrote "little bit of curve fitting together with wishful thinking to make the spin come out to 1/2, especially the sea quark/gluon contribution"

From the ArXiv paper"

"All results that will be presented in this work are computed on the latest European Twisted Mass Collaboration (ETMC) gauge field ensemble"

I don't think there is wishful curve fitting but there are ...lots of assumptions...unchallenged. plenty of renormalisation..

I am sure Cyprus could fit something to Kozima's newer TNCF model if they put their supercomputer on to it.