| Makale Türü | Özgün Makale (Uluslararası alan indekslerindeki dergilerde yayınlanan tam makale) | ||
| Dergi Adı | Phys. Lett. B | ||
| Makale Dili | – | Basım Tarihi | 09-2021 |
| Cilt / Sayı / Sayfa | 829 / 0 / 137062–0 | DOI | – |
| Makale Linki | https://cds.cern.ch/record/2780100 | ||
| UAK Araştırma Alanları |
Nükleer Fizik
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| Özet |
| The B0 s and B+ production yields are measured in PbPb collisions at a center-of-mass energy per nucleon pair of 5.02 TeV. The data sample, collected with the CMS detector at the LHC, corresponds to an integrated luminosity of 1.7 nb-1. The mesons are reconstructed in the exclusive decay channels B0 s→ J/ψ (µ+ µ-) φ (K+K-) and B+→ J/ψ (µ+ µ-) K+, in the transverse momentum range 7–50 GeV/c and absolute rapidity 0–2.4. The B0 s meson is observed with a statistical significance in excess of five standard deviations for the first time in nucleus-nucleus collisions. The measurements are performed as functions of the transverse momentum of the B mesons and of the PbPb collision centrality. The ratio of production yields of B0 s and B+ is measured and compared to theoretical models that include quark recombination effects. |
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