2025/07/07 by Azad I. Ahmadov, Ahmadov, Azad I.
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions
paper · pdf · doi:10.48550/arxiv.2507.04835
openalex publication_date 2025/07/07 · openalex created_date 2025/10/20 · openalex updated_date 2026/07/28
In this paper, we investigate the production of a Ξ0 Ξ0 using e+e- collision data at ten center-of-mass energies between 3.51 and 4.95 GeV collected with the BESIII detector at the BEPCII collider and corresponding to an integrated luminosity of 30 \rmfb-1 to study the structure of baryons. The data collected by the BESIII detector are useful for the study of XYZ states, and this collaboration continues the exploration of these exotic charmonium-like states. We explore a hyperon pair produced in the electron-positron annihilation reactions. In the present paper we present the phenomenological results of our studies on the production of Ξ0 Ξ0 in e+e- annihilation at the BESIII detector at the BEPCII Collider. In the reaction e+e- → Ξ0 Ξ0, we consider two different contributions: one from the D meson loop and the ofther from the three-gluon charmonium annihilation. We compute the total cross section of the process e+e- → Ξ0 Ξ0 including the contributions of the D-meson loop and three-gluon loops as well as the interference of all diagrams. As for the purely electromagnetic mechanism, large relative phases are generated for these contributions. For a large momentum transferred region we get as a byproduct a fit of the electromagnetic form factor of the Ξ0 - hyperon. In this paper, in addition to the ψ(3770) charmonium, we also take into account the contributions of other charmonium (-like) states, such as ψ(4040), ψ(4160), Y(4230), Y(4360), ψ(4415), and Y(4660). On the whole our results are in good agreement with the available experimental data.