Observation of Bs0 mesons and measurement of the Bs0/B+ yield ratio in PbPb collisions at √SNN=5.02 TeV
Yazarlar (1)
Prof. Dr. Hasan OĞUL Sinop Üniversitesi, Türkiye
Makale Türü Açık Erişim Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı Physics Letters Section B Nuclear Elementary Particle and High Energy Physics (Q1)
Dergi ISSN 0370-2693 Dergi Bilgileri (2022)
Makale Dili İngilizce Basım Tarihi 06-2022
Cilt / Sayı / Sayfa 829 / 1 / 1–34 DOI 10.1016/j.physletb.2022.137062
Makale Linki https://doi.org/10.1016/j.physletb.2022.137062
UAK Araştırma Alanları
Fen Bilimleri ve Matematik
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+. 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.
Anahtar Kelimeler
B mesons | CMS | Hadronization | Heavy flavor | Quark gluon plasma