Nuclear medium effects on the properties of $\hat{I}›(1405)$

Abstract

We study the $\hat{I}›(1405)$ resonance with $I(J^P)=0(1/2^{-})$ in the context of the pentaquark hypothesis in the nuclear medium. For the investigation of the influence of the nuclear medium on the physical parameters of $\hat{I}›(1405)$, we propose a molecular-type structure involving $K^{-}p$ and ${\bar{K}}^{0}n$ admixtures, correlated with the nuclear matter density. Our analysis reveals a substantial shift in both mass and residue, approximately $20\%$ and $38\%$, respectively. These findings have significant implications for experimental researchers aimed at identifying in-medium characteristics of hyperon resonances.

15 pages, 6 graphs, 3 table