2014/09/02 by A. K. Likhoded, А. К. Лиходед, A. V. Luchinsky +2 · 32 citations
Mathematics · Physics and Astronomy · #Algorithm #Artificial intelligence #Computer science #High-Energy Particle Collisions Research #Mathematics #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1103/physrevd.90.074021
published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 90(7) (American Physical Society) · 10 pages, 7 figures
arxiv created 2014/09/02 · openalex publication_date 2014/10/16 · arxiv updated 2014/10/17 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
This paper is devoted to a phenomenological study of \ensuremathχc,b-meson production in high energy hadronic collisions in the framework of nonrelativistic QCD (NRQCD). We analyze all available experimental data on \ensuremathχc-meson production and extract nonperturbative NRQCD matrix elements by data fitting. It is shown that measured pT spectra of \ensuremathχc-mesons is mainly formed by color singlet components, while the \ensuremathσ(\ensuremathχc2)/\ensuremathσ(\ensuremathχc1) ratio depends strongly on color octet matrix elements; this ratio becomes a highly sensitive tool to study contributions of the different NRQCD expansion terms. Predictions for \ensuremathχb-meson production cross sections, which are obtained using NRQCD scaling rules, are also given.