Nuclear medium effects on the properties of Λ(1405)

2024/03/05 by J. Y. Süngü, N. Er, Süngü, J. Y. +1
Materials Science · #FOS: Physical sciences #Graphite, nuclear technology, radiation studies #High Energy Physics - Phenomenology (hep-ph) #Nuclear Theory (nucl-th)

paper · pdf · doi:10.48550/arxiv.2403.02728

openalex publication_date 2024/03/05 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We study the Λ(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 Λ(1405), we propose a molecular-type structure involving K^-p and K⁰n 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.

Related

• Investigation of Λ(1405) as a molecular pentaquark state
• The nature of Λ(1405) hyperon resonance in chiral dynamics
• On the Structure of the Lambda 1405
• Dynamics of kaons in nuclear matter
• Pentaquark Θ⁺ mass and width in dense matter