Pion structure in a nuclear medium
Abstract
The structure and electroweak properties of the pion in symmetric nuclear matter are presented in the framework of the Nambu--Jona-Lasinio model. The pion is described as a bound state of a dressed quark-antiquark pair governed by the Bethe-Salpeter equation. For the in-medium current-light-quark properties we use the quark-meson coupling model, which describes successfully the properties of hadron in a nuclear medium. We found that the light-quark condensates, the pion decay constant and pion-quark coupling constant decrease with increasing nuclear matter density. We then predict the modifications of the charge radius of the charged pion in nuclear matter.
Cite
@article{arxiv.1901.06008,
title = {Pion structure in a nuclear medium},
author = {Parada. T. P. Hutauruk and Yongseok Oh and K. Tsushima},
journal= {arXiv preprint arXiv:1901.06008},
year = {2020}
}
Comments
4 pages, 6 figures, accepted version for the QNP2018 proceedings, 8th International Conference on Quarks and Nuclear Physics (QNP2018), November 13-17, 2018, Tsukuba, Ibaraki, Japan