Measurement of the CP-violating phase φs in the B0s → J/ψφ(1020) → μ+μ-K+K- channel in proton-proton 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 (2021) | ||
| Makale Dili | İngilizce | Basım Tarihi | 05-2021 |
| Cilt / Sayı / Sayfa | 816 / 1 / 136188–0 | DOI | 10.1016/j.physletb.2021.136188 |
| Makale Linki | https://www.sciencedirect.com/science/article/am/pii/S0370269321001283?via%3Dihub | ||
| UAK Araştırma Alanları |
Fen Bilimleri ve Matematik
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| Özet |
| The CP-violating weak phase ϕ s and the decay width difference Δ Γ s between the light and heavy B s 0 mass eigenstates are measured with the CMS detector at the LHC in a sample of 48 500 reconstructed B s 0→ J/ψ ϕ (1020)→ μ+ μ− K+ K− events. The measurement is based on a data sample corresponding to an integrated luminosity of 96.4 fb− 1, collected in proton-proton collisions at s= 13 TeV in 2017–2018. To extract the values of ϕ s and Δ Γ s, a time-dependent and flavor-tagged angular analysis of the μ+ μ− K+ K− final state is performed. The analysis employs a dedicated tagging trigger and a novel opposite-side muon flavor tagger based on machine learning techniques. The measurement yields ϕ s=− 11±50 (stat)±10 (syst) mrad and Δ Γ s= 0.114±0.014 (stat)±0.007 (syst) ps− 1, in agreement with the standard model predictions. When combined with the previous CMS measurement at s= 8 TeV, the … |
| Anahtar Kelimeler |
| B physics | CMS | Oscillations | Physics |
Science Direct
Measurement of the CP-violating phase φs in the B0s → J/ψφ(1020) → μ+μ-K+K- channel in proton-proton collisions at √s=13 TeV
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| Web of Science | 37 |
| Scopus | 51 |
| Google Scholar | 1 |
| Google Scholar | 113 |