5–10 Sept 2021
Online
Europe/Lisbon timezone

First analysis of world polarized DIS data with small-$x$ helicity evolution

5 Sept 2021, 15:28
15m
Online

Online

Talk QCD, spin physics and chiral dynamics QCD, spin physics and chiral dynamics

Speaker

Daniel Adamiak (Ohio State University)

Description

We present the first-ever description the world data on the $g_1^{p,n}$ structure function at small Bjorken $x$ using evolution equations in $x$ derived from first principles QCD. This is a Monte-Carlo analysis within the JAM global framework that allows us to fit all existing polarized DIS data below $x<0.1$ as well as predict future measurements of small $x$ $g_1^{p,n}$ at the EIC. This is a necessary step in determining the quark helicity PDFs and, ultimately, the quark contribution to the proton spin.

Primary authors

Daniel Adamiak (Ohio State University) Prof. Yuri Kovchegov (Ohio State University) Dr Daniel Pitonyak (Lebanon Valley College) Dr Matthew Sievert (New Mexico State University) Dr Nobuo Sato (Jefferson Lab) Dr Wally Melnitchouk (Jefferson Lab)

Presentation materials