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QCD vacuum and baryon masses

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Title
QCD vacuum and baryon masses
Author(s)
Igor A. Mazur; Youngman Kim; Harada, Masayasu; Lee, Hyun Kyu
Publication Date
2023-11
Journal
International Journal of Modern Physics E, v.32, no.11
Publisher
World Scientific
Abstract
To study a possible role of the quantum chromodynamics (QCD) vacuum in nuclear and hadron physics, we evaluate a physical quantity in a candidate of the QCD vacuum. In this study, we adopt the Copenhagen (spaghetti) picture of the QCD vacuum and calculate the ground state baryon masses in a constituent quark model. We find that the calculated baryon mass does depend on a parameter that characterizes the Copenhagen picture of the QCD vacuum and satisfies the Gell-Mann-Okubo mass relation for the baryon octet. We also observe that the effective constituent quark mass defined in this study contains a contribution attributed to the Copenhagen vacuum, that is the gluon background field. We then estimate the value of the background gluon field as a function of the up (down) constituent quark mass by using the baryon masses as inputs. © 2023 World Scientific Publishing Company.
URI
https://pr.ibs.re.kr/handle/8788114/14564
DOI
10.1142/S021830132350060X
ISSN
0218-3013
Appears in Collections:
Center for Exotic Nuclear Studies(희귀 핵 연구단) > 1. Journal Papers (저널논문)
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