English

Nuclear medium effects on the properties of $\Lambda(1405)$

Nuclear Theory 2024-03-06 v1 High Energy Physics - Phenomenology

Abstract

We study the Λ(1405)\Lambda(1405) resonance with I(JP)=0(1/2)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 Λ(1405)\Lambda(1405), we propose a molecular-type structure involving KpK^{-}p and Kˉ0n\bar{K}^{0}n admixtures, correlated with the nuclear matter density. Our analysis reveals a substantial shift in both mass and residue, approximately 20%20\% and 38%38\%, respectively. These findings have significant implications for experimental researchers aimed at identifying in-medium characteristics of hyperon resonances.

Keywords

Cite

@article{arxiv.2403.02728,
  title  = {Nuclear medium effects on the properties of $\Lambda(1405)$},
  author = {J. Y. Süngü and N. Er},
  journal= {arXiv preprint arXiv:2403.02728},
  year   = {2024}
}

Comments

15 pages, 6 graphs, 3 table

R2 v1 2026-06-28T15:09:26.709Z