Measurement of the polarizations of prompt and non-prompt J/ψ and ψ(2S) mesons produced in pp collisions at √s=13 TeV
Yazarlar (1)
Prof. Dr. Hasan OĞUL Sinop Üniversitesi, Türkiye
| Makale Türü |
Özgün Makale
(SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
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| Dergi Adı | Physics Letters Section B Nuclear Elementary Particle and High Energy Physics (Q1) | ||
| Dergi ISSN | 0370-2693 Dergi Bilgileri (2024) | ||
| Makale Dili | İngilizce | Basım Tarihi | 11-2024 |
| Cilt / Sayı / Sayfa | 858 / 1 / 139044–0 | DOI | 10.1016/j.physletb.2024.139044 |
| Makale Linki | https://doi.org/10.1016/j.physletb.2024.139044 | ||
| UAK Araştırma Alanları |
Fen Bilimleri ve Matematik
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| Özet |
| The polarizations of prompt and non-prompt J and (2S) mesons are measured in proton-proton collisions at = 13 TeV, using data samples collected by the CMS experiment in 2017 and 2018, corresponding to a total integrated luminosity of 103.3 fb. Based on the analysis of the dimuon decay angular distributions in the helicity frame, the polar anisotropy, , is measured as a function of the transverse momentum, , of the charmonium states, in the 25-120 and 20-100 GeV ranges for the J and (2S), respectively. The non-prompt polarizations agree with predictions based on the hypothesis that, for 25 GeV, the non-prompt J and (2S) are predominantly produced in two-body B meson decays. The prompt results clearly exclude strong transverse polarizations, even for exceeding 30 times the J mass, where tends to an asymptotic value around 0.3. Taken together with previous measurements, by CMS and LHCb at = 7 TeV, the prompt polarizations show a significant variation with , at low . |
| Anahtar Kelimeler |
| CMS | Quarkonium polarization | Quarkonium production |
Science Direct
Measurement of the polarizations of prompt and non-prompt J/ψ and ψ(2S) mesons produced in pp collisions at √s=13 TeV
BM Sürdürülebilir Kalkınma Amaçları
| Atıf Sayıları | |
| Web of Science | 4 |
| Scopus | 10 |
| Google Scholar | 15 |