Measurement of |<i>V<sub>cb</sub></i>| with <i>B</i><sub><i>s</i></sub><SUP>0</SUP> → <i>D</i><sub>s</sub><SUP>(</SUP>*<SUP>)-</SUP> μ<SUP>+</SUP>ν<sub>μ</sub> decays



Aaij, R, Beteta, C Abellan, Adeva, B, Adinolfi, M, Aidala, CA, Ajaltouni, Z, Akar, S, Albicocco, P, Albrecht, J, Alessio, F
et al (show 834 more authors) (2020) Measurement of |<i>V<sub>cb</sub></i>| with <i>B</i><sub><i>s</i></sub><SUP>0</SUP> → <i>D</i><sub>s</sub><SUP>(</SUP>*<SUP>)-</SUP> μ<SUP>+</SUP>ν<sub>μ</sub> decays. PHYSICAL REVIEW D, 101 (7). 072004-.

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Abstract

The element $|V_{cb}|$ of the Cabibbo-Kobayashi-Maskawa matrix is measured using semileptonic $B_s^0$ decays produced in proton-proton collision data collected with the LHCb detector at center-of-mass energies of 7 and 8 TeV, corresponding to an integrated luminosity of 3 fb$^{-1}$. Rates of $B_s^0 \to D_s^{-} \mu^+ \nu_{\mu}$ and $B_s^0 \to D_s^{*-} \mu^+ \nu_{\mu}$ decays are analyzed using hadronic form-factor parametrizations derived either by Caprini, Lellouch and Neubert (CLN) or by Boyd, Grinstein and Lebed (BGL). The measured values of $|V_{cb}|$ are ${(41.4 \pm 0.6 \pm 0.9 \pm 1.2)\times 10^{-3}}$ and ${(42.3 \pm 0.8 \pm 0.9 \pm 1.2)\times 10^{-3}}$ in the CLN and BGL parametrization, respectively. The first uncertainty is statistical, the second systematic, and the third is due to the external inputs used in the measurement. These results are in agreement with those obtained from decays of $B^+$ and $B^0$ mesons. They are the first determinations of $|V_{cb}|$ at a hadron-collider experiment and the first using $B_s^0$ meson decays.

Item Type: Article
Additional Information: All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2019-041.html
Uncontrolled Keywords: hep-ex, hep-ex
Depositing User: Symplectic Admin
Date Deposited: 22 Jun 2020 09:40
Last Modified: 17 Oct 2023 16:12
DOI: 10.1103/PhysRevD.101.072004
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3090934