Measurement of properties of Bs0s → μ+μ- decays and search for B0 → μ+μ- with the CMS experiment
Yazarlar (1)
Prof. Dr. Hasan OĞUL Sinop Üniversitesi, Türkiye
| Makale Türü |
Özgün Makale
(ESCI dergilerinde yayınlanan tam makale)
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| Dergi Adı | Journal of High Energy Physics | ||
| Dergi ISSN | 1126-6708 | ||
| Makale Dili | İngilizce | Basım Tarihi | 04-2020 |
| Cilt / Sayı / Sayfa | 2020 / 4 / 188–0 | DOI | 10.1007/JHEP04(2020)188 |
| Makale Linki | https://hdl.handle.net/11384/149423 | ||
| UAK Araştırma Alanları |
Fen Bilimleri ve Matematik
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| Özet |
| Results are reported for the→ μ+ μ− branching fraction and effective lifetime and from a search for the decay B 0→ μ+ μ−. The analysis uses a data sample of proton-proton collisions accumulated by the CMS experiment in 2011, 2012, and 2016, with center-of-mass energies (integrated luminosities) of 7 TeV (5 fb− 1), 8 TeV (20 fb− 1), and 13 TeV (36 fb− 1). The branching fractions are determined by measuring event yields relative to B+→ J/ψK+ decays (with J/ψ→ μ+ μ−), which results in the reduction of many of the systematic uncertainties. The decay→ μ+ μ− is observed with a significance of 5.6 standard deviations. The branching fraction is measured to be\(\mathrm {\mathcal {B}}\left ({\mathrm {B}} _ {\mathrm {s}}^ 0\to {\upmu}^{+}{\upmu}^{-}\right)=\left [2.9\pm 0.7\left (\exp\right)\pm 0.2\left (\mathrm {frag}\right)\right]\times {10}^{-9}\), where the first uncertainty combines the experimental statistical and systematic … |
| Anahtar Kelimeler |
| B physics | Hadron-Hadron scattering (experiments) |
