2018/10/21 by Yu Feng, Bin Gong, Chao-Hsi Chang +1 · 30 citations
Physics and Astronomy · #Algorithm #Computer science #Factorization #Helicity #High-Energy Particle Collisions Research #Lambda #Large Hadron Collider #Particle physics #Particle physics theoretical and experimental studies #Physics #Polarization (electrochemistry) #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum mechanics #hep-ph
paper · pdf · doi:10.1103/physrevd.99.014044
published in Physical review. D/Physical review. D. 99(1) (American Physical Society) · 5 pages, 4 figures
arxiv created 2018/10/21 · openalex created_date 2018/10/26 · openalex publication_date 2019/01/30 · arxiv updated 2019/02/06 · openalex updated_date 2026/08/05
Based on the nonrelativistic quantum chromodynamics factorization formalism, the polarization parameters \ensuremathλ_\ensuremathθ\ensuremathφ and \ensuremathλ_\ensuremathφ of prompt J/\ensuremathψ hadroproduction for CMS and LHCb are analyzed in the helicity frame and calculated at QCD next-to-leading order for the first time. For prompt J/\ensuremathψ production, we take into account the feed-down contributions from \ensuremathχcJ and \ensuremathψ(2S) decays. The theoretical predictions for the polarization parameters \ensuremathλ_\ensuremathθ\ensuremathφ and \ensuremathλ_\ensuremathφ of J/\ensuremathψ are presented. Using the theoretical results, we perform a simultaneous fit to the experimental measurements of the yield and polarization of J/\ensuremathψ hadroproduction, and find that the results describe the experimental measurements at the LHC quite well.