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JAM small-$x$ helicity phenomenology

by Daniel Adamiak

Submission summary

As Contributors: Daniel Adamiak
Arxiv Link: (pdf)
Date submitted: 2021-08-10 14:06
Submitted by: Adamiak, Daniel
Submitted to: SciPost Physics Proceedings
Proceedings issue: RADCOR 2021 (15th International Symposium on Radiative Corrections: Applications of Quantum Field Theory to Phenomenology)
Academic field: Physics
  • Nuclear Physics - Theory
Approaches: Theoretical, Phenomenological


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.

Current status:
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Submission 2108.02070v2 on 10 August 2021

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