Gamow-Teller transitions and the spin EMC effect: the Bjorken sum-rule in medium
High Energy Physics - Phenomenology
2021-02-04 v2 Nuclear Theory
Abstract
Gamow-Teller transitions in nuclei tell us that the nucleon's axial charge is quenched in large nuclei by about 20%. This result tells us that the spin structure of the nucleon is modified in nuclei and disfavours models of the medium dependence of parton structure based only on nucleon short range correlations in nuclei. For polarized photoproduction the Gerasimov-Drell-Hearn integral is expected to be strongly enhanced in medium.
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Cite
@article{arxiv.2006.10601,
title = {Gamow-Teller transitions and the spin EMC effect: the Bjorken sum-rule in medium},
author = {Steven D. Bass},
journal= {arXiv preprint arXiv:2006.10601},
year = {2021}
}
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5 pages