Gluon EMC effects in nuclear matter

Wang, X. G.; Bentz, W.; Cloët, I. C.; Thomas, A. W.

doi:10.1088/1361-6471/ac4c90

Title: Gluon EMC effects in nuclear matter

Journal Article · 14 February 2022 · Journal of Physics. G, Nuclear and Particle Physics

DOI: https://doi.org/10.1088/1361-6471/ac4c90 · OSTI ID:1894225

^[1]; Bentz, W. ^[2]; Cloët, I. C. ^[3];

^[1]

Univ. of Adelaide, SA (Australia)
Tokai Univ., Hiratsuka, Kanagawa (Japan)
Argonne National Lab. (ANL), Argonne, IL (United States)

In this work, we investigate the gluonic structure of nuclei within a mean-field model of nuclear structure based upon the modification of the structure of a bound nucleon, with the nucleon described by the Nambu–Jona-Lasinio model. This approach has been shown to reproduce the European Muon Collaboration (EMC) effect, involving the ratio of the spin-independent structure functions of a heavier nucleus to that of the deuteron. It also predicts a significant nuclear modification for the spin structure functions, known as the polarized EMC effect. Here we report sizeable nuclear modifications of the gluon distributions (a ‘gluon EMC effect’) for the ratios of both the unpolarized and polarized gluon distributions in nuclear matter to those of a free nucleon.

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Research Organization:: Argonne National Laboratory (ANL), Argonne, IL (United States)

Sponsoring Organization:: Australian Research Council (ARC); USDOE Office of Science (SC), Nuclear Physics (NP)

Grant/Contract Number:: AC02-06CH11357

OSTI ID:: 1894225

Journal Information:: Journal of Physics. G, Nuclear and Particle Physics, Journal Name: Journal of Physics. G, Nuclear and Particle Physics Journal Issue: 3 Vol. 49; ISSN 0954-3899

Publisher:: IOP PublishingCopyright Statement

Country of Publication:: United States

Language:: English

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