Speaker
Nicholas Baldonado
(New Mexico State University)
Description
Novel improvements to small-$x$ helicity evolution equations have been incorporated into a global analysis of both DIS and SIDIS cross sections. This global analysis uncovered a bimodality of solutions for the asymptotic ($x \to 0 $) sign of the $g_1$ structure function of the proton, and a novel correlation it has with the quark and gluon helicity parton distribution functions (hPDFs), $\Delta\Sigma$ and $\Delta G$. In this poster I will discuss the disambiguation of this bimodality, and some potential avenues we can take to resolve this degeneracy in the future.
Primary author
Nicholas Baldonado
(New Mexico State University)
Co-authors
Andrey Tarasov
(North Carolina State University)
Daniel Adamiak
(Ohio State University)
Daniel Pitonyak
(Lebanon Valley College)
Matthew Sievert
(New Mexico State University)
Nobuo Sato
(Jefferson Lab)
Wally Melnitchouk
(Jefferson Lab)
Yossathorn Tawabutr
(The Ohio State University)
Yuri Kovchegov
(The Ohio State University)
