2024/10/23 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.2410.19860
openalex publication_date 2024/10/23 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
In the present paper, we investigate the production of a baryon pair in e+e- annihilation to study the structure of baryons. To study the basic structure of the Standard Model, it is also necessary to consider the baryon-antibaryon pair production at the electron-positron linear collider. The production of a baryon pair in electron-positron annihilation provides a powerful tool at higher center-of-mass energies. In this work, we present phenomenological results for Σ+ Σ- production in e+e- collision at the BESIII Collider. We investigate a hyperon pair produced in the reaction e+e- → Σ+ Σ-. Two different contributions are considered: the D meson loop and the three-gluon charmonium annihilation loop. Taking into account the contributions of the D-meson loop and three-gluon loops and the interference of all diagrams, we calculate the total cross section of the process e+e- → Σ+ Σ-. With respect to a purely electromagnetic mechanism, large relative phases are generated for these contributions. We obtain as a byproduct a fit of the electromagnetic form factor of the Σ hyperon for a large momentum transferred region. In this process, in addition to ψ(3770) charmonium, we also take into account the contributions of other charmonium (-like) states, ψ(4040), ψ(4160), Y(4230), Y(4360), ψ(4415), and Y(4660). The obtained results are in good agreement with experimental data.