2025/02/26 by P. Encarnación, Encarnación, Pablo, A. Feijoo +3 · 1 citation
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Nuclear Theory (nucl-th) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions
paper · pdf · doi:10.48550/arxiv.2502.19329
openalex publication_date 2025/02/26 · openalex created_date 2025/10/15 · openalex updated_date 2026/07/28
We have addressed here the problem of calculating the correlation function of a stable particle with a resonance, in particular one resonance that qualifies as a molecular state of two components. The formalism used requires to evaluate the scattering matrix of the stable particle with the molecule, a nuclear problem which we address by means of the fixed center approximation. We have applied the method to the interaction of a proton with the f1(1285) resonance, presently under investigation by the ALICE collaboration, where the f1(1285) is taken as a K^*K-K^*K molecule. We find that the p ~ f1(1285) interaction develops a resonance state below the p ~ f1(1285) threshold, which leads to a depletion in the p ~ f1(1285) correlation function for small values of the proton momentum. The discussion presented shows that these type of studies can provide much information on the nature of some resonances and the existence of three-body bound states involving mesons and baryons.