In-Medium Pion Valence Distribution Amplitude

TL;DR

This paper investigates how the pion's internal structure, specifically its valence distribution and wave function, changes within nuclear matter, highlighting significant modifications at normal nuclear density due to a decrease in the pion decay constant.

Contribution

It provides new calculations of the in-medium pion valence distribution amplitude and wave function, extending previous models to include medium effects.

Findings

Both the in-medium pion valence distribution and wave function are substantially modified at normal nuclear density.

The modifications are primarily due to the reduction in the pion decay constant within the medium.

Results enhance understanding of pion behavior in nuclear environments.

Abstract

After a brief review of the quark-based model for nuclear matter, and some pion properties in medium presented in our previous works, we report new results for the pion valence wave function as well as the valence distribution amplitude in medium, which are presented in our recent article. We find that both the in-medium pion valence distribution and the in-medium pion valence wave function, are substantially modified at normal nuclear matter density, due to the reduction in the pion decay constant.