Contrasting observables related to the N^*(1535) from the molecular or a genuine structure

2023/11/24 by Li Haipeng, Jing Song, Li, Hai-Peng +7 · 1 citation
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Nuclear Theory (nucl-th) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.2311.14365

openalex publication_date 2023/11/24 · openalex created_date 2023/11/28 · openalex updated_date 2026/07/30

Abstract

In this work we compare the predictions for the scattering length and effective range of the channels K⁰ Σ⁺, K⁺ Σ⁰ , K⁺ Λ and ηp, assuming the N^*(1535) state as a molecular state of these channels, or an original genuine state, made for instance from three quarks. Looking at very different scenarios, what we conclude is that the predictions of these two pictures are drastically different, to the point that we advise the measurement of these magnitudes, accessible for instance by measuring correlation functions, in order to gain much valuable information concerning the nature of this state.

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