Pion in the Medium with a Light-Front Model

TL;DR

This paper investigates how the properties of the pion change in symmetric nuclear matter by combining the Quark-Meson Coupling model with a light-front constituent quark model, extending previous vacuum studies to in-medium conditions.

Contribution

It introduces a method to incorporate in-medium modifications into the light-front constituent quark model using the QMC model, providing new insights into pion behavior in nuclear matter.

Findings

Pion electromagnetic form factors are modified in nuclear matter.

The model predicts changes in pion decay constants in medium.

In-medium pion radii are affected by nuclear environment.

Abstract

The pion properties in symmetric nuclear matter are investigated with the Quark-Meson Coupling (QMC) Model plus the light-front constituent quark model~(LFCQM). The LFCQM has been quite successful in describing the properties of pseudoscalar mesons in vacuum, such as the electromagnetic elastic form factors, electromagnetic radii, and decay constants. We study the pion properties in symmetric nuclear matter with the in-medium input recalculated through the QMC model, which provides the in-medium modification of the LFCQM.