Correlation function for the p f 1 ( 1285 ) interaction
Year: 2025
Type: article
Abstract: 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 us 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 f 1 ( 1285 ) resonance, presently under investigation by the ALICE collaboration, where the f 1 ( 1285 ) is taken as a K * K ¯ − K ¯ * K molecule. We find that the p f 1 ( 1285 ) interaction develops a resonance state below the p f 1 ( 1285 ) threshold, which leads to a depletion in the p f 1 ( 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.
DOI: 10.1103/s7g4-6lmv
Authors: P. Encarnación, A. Feijoo, E. Oset
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Awards: G1038765033, G1151712903, G1392915876, G14744916, G1570660777, G1831862684, G2088816128, G3111662533, G3142173218, G3176647223, G341721890, The strong interaction at the frontier of knowledge: fundamental research and applications, G3480961101, G3753556305, G4301024709, G4328693028, G5805502524, G5828615680, G6757515635, G680252854, G6825843117, G705951570, G7451223319, G7902283404
OpenAlex ID: W4410889665