Production and polarization of $S$-wave quarkonia in potential nonrelativistic QCD
| Autor: | Nora Brambilla, Hee Sok Chung, Antonio Vairo, Xiang-Peng Wang |
|---|---|
| Rok vydání: | 2022 |
| Předmět: |
Nuclear Theory (nucl-th)
High Energy Physics - Phenomenology High Energy Physics - Experiment (hep-ex) High Energy Physics - Lattice High Energy Physics - Phenomenology (hep-ph) Nuclear Theory High Energy Physics::Lattice High Energy Physics::Phenomenology High Energy Physics - Lattice (hep-lat) FOS: Physical sciences High Energy Physics::Experiment High Energy Physics - Experiment |
| Zdroj: | Physical Review |
| DOI: | 10.48550/arxiv.2203.07778 |
| Popis: | 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 $J/\psi$, $\psi(2S)$, and excited $\Upsilon$ states that agree well with LHC data. Our results may have important implications in pinning down the heavy quarkonium production mechanism. Comment: 6 pages, 2 figures, 2 tables, minor corrections, version published as a Letter in Phys. Rev. D |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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