arXiv:2110.11495·v1·High Energy Physics — Phenomenology
CTEQ-TEA group updates: Photon PDF and Impact from heavy flavors in the CT18 global analysis
Marco Guzzi🇺🇸 · Keping Xie🇺🇸 · Tie-Jiun Hou🇨🇳 · Pavel Nadolsky🇺🇸 · Carl Schmidt🇺🇸 · Mengshi Yan🇨🇳 · C.-P. Yuan🇺🇸
Abstract
We discuss recent CTEQ-TEA group activities after the publication of the CT18 global analysis of parton distribution functions (PDFs) in the proton. In particular, we discuss a new calculation for the photon content in the proton, termed as CT18lux and CT18qed PDFs, and the impact of novel charm- and bottom-quark production cross section measurements at HERA on the CT18 global analysis.
Comments: 6 pages, 4 figures, EPS-HEP2021 Conference Proceedings. Contribution to the European Physical Society Conference on High Energy Physics 2021