Over the past ∼10 years, the topic of the nucleon's nonperturbative or intrinsic charm (IC) content has enjoyed something of a renaissance, largely motivated by theoretical developments involving quark modelers and PDF fitters. In this talk I will briefly describe the importance of intrinsic charm to various issues in high-energy phenomenology, and survey recent progress in constraining its overall normalization and contribution to the momentum sum rule of the nucleon. I end with the conclusion that progress on the side of calculation has now placed the onus on experiment to unambiguously resolve the proton's intrinsic charm component.
@article{arxiv.1612.05686,
title = {Recent progress on intrinsic charm},
author = {T. J. Hobbs},
journal= {arXiv preprint arXiv:1612.05686},
year = {2017}
}
Comments
Invited talk at the Conference "XIIth Quark Confinement and the Hadron Spectrum" (Thessaloniki, Greece; 29th August - 3rd September 2016). 9 pages, 4 figures; reference added in version 2