Superfast quarks in deuterium

Kim, Dmitriy N.; Miller, Gerald A.

doi:10.1103/PhysRevC.109.045203

Title: Superfast quarks in deuterium

Journal Article · 02 April 2024 · Physical Review. C

DOI: https://doi.org/10.1103/PhysRevC.109.045203 · OSTI ID:2333048

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An extension to our previous study on nuclear parton distribution functions (nPDFs) [Kim and Miller, ] using light-front holographic quantum chromodynamics (LFHQCD) [Brodsky, de Teramond, Dosch, and Erlich, ] is presented. We apply the effects of nucleon motion inside the nucleus (Fermi motion/smearing) to deuterium, extending our deuterium nPDFs to the , $x > 1$ , region [Frankfurt and Strikman, ] where we estimate our results to be reasonable up to $x \approx 1.7$ . We utilize four different deuteron wave functions (AV18, NijmI, NijmII, Nijm93). We find that our model, with no additional new parameters, shows very good agreement with deuterium EMC ratio data obtained from the BONuS experiment [Fenker , ; Baillie (CLAS Collaboration), ; ; Tkachenko (CLAS Collaboration), ; ; Griffioen , ]. Looking beyond conventional nuclear physics, and in anticipation of 12 GeV experiments at Jefferson Lab, we use a LFHQCD ansatz to predict the contributions of an exotic six-quark state to the deuteron $F_{2}$ structure function, $F_{2}^{D}$ , in the superfast region. We find that the effects of using other potentials are about the same magnitude as six-quark effects—both have small effects in $x < 1$ , but have significant contributions at $x > 1$ . Published by the American Physical Society 2024

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Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP)

Grant/Contract Number:: FG02-97ER41014

OSTI ID:: 2333048

Journal Information:: Physical Review. C, Journal Name: Physical Review. C Journal Issue: 4 Vol. 109; ISSN PRVCAN; ISSN 2469-9985

Publisher:: American Physical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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