[Theory-seminars] Cake Seminar Monday (9am) - Yiyu Zhou

[Colin Egerer]

Hello All,

This coming Monday, March 21st at 9am (EDT), Yiyu Zhou will give a (virtual) cake seminar on https://jlab-org.zoomgov.com/j/1611179843?pwd=M09CNTFpbFVZSW1IQlhIMGp3RUVHUT09

Please see below for the details.

Cake Seminar
Monday, March 21st at 9:00AM

Yiyu Zhou (South China Normal University/UCLA)
will address "How well do we know the gluon polarization in the proton?"

Abstract: We perform the first simultaneous global QCD analysis of spin-averaged and spin-dependent parton distribution functions (PDFs), including single jet production data from unpolarized and polarized hadron collisions. We critically assess the impact of SU(3) flavor symmetry and PDF positivity assumptions on the quark and gluon helicity PDFs, and find strong bias from these, particularly on the gluon polarization. The simultaneous analysis allows for the first time extraction of individual helicity-aligned and antialigned PDFs with a consistent treatment of uncertainties.

Have a pleasant weekend!
Caroline, Colin, & Patrick
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