تقرير
Production and polarization of $S$-wave quarkonia in potential nonrelativistic QCD
| العنوان: | Production and polarization of $S$-wave quarkonia in potential nonrelativistic QCD |
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| المؤلفون: | Brambilla, Nora, Chung, Hee Sok, Vairo, Antonio, Wang, Xiang-Peng |
| المصدر: | Phys. Rev. D 105, L111503 (2022) |
| سنة النشر: | 2022 |
| مصطلحات موضوعية: | High Energy Physics - Phenomenology, High Energy Physics - Experiment, High Energy Physics - Lattice, Nuclear Theory |
| الوصف: | 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 |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevD.105.L111503 |
| URL الوصول: | http://arxiv.org/abs/2203.07778 |
| رقم الأكسشن: | edsarx.2203.07778 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevD.105.L111503 |
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