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  • Letter
  • Open Access

Production and polarization of S-wave quarkonia in potential nonrelativistic QCD

Nora Brambilla1,2,3, Hee Sok Chung1,4,*, Antonio Vairo1, and Xiang-Peng Wang1

  • 1Physik Department, Technische Universität München, James-Franck-Strasse 1, 85748 Garching, Germany
  • 2Institute for Advanced Study, Technische Universität München, Lichtenbergstrasse 2 a, 85748 Garching, Germany
  • 3Munich Data Science Institute, Technische Universität München, Walther-von-Dyck-Strasse 10, 85748 Garching, Germany
  • 4Excellence Cluster ORIGINS, Boltzmannstrasse 2, 85748 Garching, Germany

  • *Present address: Department of Physics, Korea University, Seoul 02841, Korea.
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Phys. Rev. D 105, L111503 – Published 23 June, 2022

DOI: https://doi.org/10.1103/PhysRevD.105.L111503

Abstract

Based on the potential nonrelativistic QCD formalism, we compute the nonrelativistic QCD long-distance matrix elements (LDMEs) for inclusive production of S-wave heavy quarkonia. This greatly reduces the number of nonperturbative unknowns and brings in a substantial enhancement in the predictive power of the nonrelativistic QCD factorization formalism. We obtain improved determinations of the LDMEs and find cross sections and polarizations of J/ψ, ψ(2S), and excited ϒ states that agree well with LHC data. Our results may have important implications in pinning down the heavy quarkonium production mechanism.

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Phys. Rev. D 105, L111503– Published 23 June, 2022
  • Received 22 March 2022
  • Accepted 9 June 2022
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

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