Measurement of the CP-violating weak phase φs and the decay width difference ΔΓs using the Bs0 → J/ψφ (1020) decay channel in pp collisions at √s=8 TeV
Yazarlar (1)
| 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 (2016) | ||
| Makale Dili | İngilizce | Basım Tarihi | 06-2016 |
| Kabul Tarihi | – | Yayınlanma Tarihi | 01-06-2016 |
| Cilt / Sayı / Sayfa | 757 / 1 / 97–120 | DOI | 10.1016/j.physletb.2016.03.046 |
| Makale Linki | https://doi.org/10.1016/j.physletb.2016.03.046 | ||
| UAK Araştırma Alanları |
Fen Bilimleri ve Matematik
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| Özet |
| The CP-violating weak phase ϕ s of the B s 0 meson and the decay width difference Δ Γ s of the B s 0 light and heavy mass eigenstates are measured with the CMS detector at the LHC using a data sample of B s 0→ J/ψ ϕ (1020)→ μ+ μ− K+ K− decays. The analysed data set corresponds to an integrated luminosity of 19.7 fb− 1 collected in pp collisions at a centre-of-mass energy of 8 TeV. A total of 49 200 reconstructed B s 0 decays are used to extract the values of ϕ s and Δ Γ s by performing a time-dependent and flavour-tagged angular analysis of the μ+ μ− K+ K− final state. The weak phase is measured to be ϕ s=− 0.075±0.097 (stat)±0.031 (syst) rad, and the decay width difference is Δ Γ s= 0.095±0.013 (stat)±0.007 (syst) ps− 1. |
| Anahtar Kelimeler |
| B-physics | CMS | CP violation | Physics |
Science Direct
Measurement of the CP-violating weak phase φs and the decay width difference ΔΓs using the Bs0 → J/ψφ (1020) decay channel in pp collisions at √s=8 TeV
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