Structure functions from renormalization group improved small x evolution

Li, Wanchen; Staśto, Anna M.

doi:10.1140/epjc/s10052-022-10523-6

Title: Structure functions from renormalization group improved small x evolution

Journal Article · 24 June 2022 · European Physical Journal. C, Particles and Fields (Online)

DOI: https://doi.org/10.1140/epjc/s10052-022-10523-6 · OSTI ID:1873970

Li, Wanchen; Staśto, Anna M.

Abstract We perform the fit to the structure function $$$$F_2$$$$ $F_{2}$ data from HERA including terms due to the resummation at small x . The equation for the unintegrated gluon density is solved, previously established within the renormalization group improved small x framework. We find very good description of the structure function $$$$F_2$$$$ $F_{2}$ and its charm component $$$$F_2^c$$$$ $F_{2}^{c}$ . The resulting unintegrated gluon density is found to be consistent with the calculations based on similar approaches available in the literature, with only slightly higher intercept value.

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Research Organization:: Pennsylvania State Univ., University Park, PA (United States)

Sponsoring Organization:: National Science Centre, Poland; USDOE; USDOE Office of Science (SC)

Grant/Contract Number:: SC0002145

OSTI ID:: 1873970

Journal Information:: European Physical Journal. C, Particles and Fields (Online), Journal Name: European Physical Journal. C, Particles and Fields (Online) Journal Issue: 6 Vol. 82; ISSN 1434-6052

Publisher:: Springer Science + Business MediaCopyright Statement

Country of Publication:: Germany

Language:: English

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