Measurement of the <i>CP</i> Asymmetry in <i>B</i><sub>s</sub><SUP>0</SUP> - &lt;(<i>B</i>)over bar&gt;<sub>s</sub><SUP>0</SUP> Mixing

Aaij, R, Adeva, B, Adinolfi, M, Ajaltouni, Z, Akar, S, Albrecht, J, Alessio, F, Alexander, M, Ali, S, Alkhazov, G
et al (show 729 more authors) (2016) Measurement of the <i>CP</i> Asymmetry in <i>B</i><sub>s</sub><SUP>0</SUP> - &lt;(<i>B</i>)over bar&gt;<sub>s</sub><SUP>0</SUP> Mixing. PHYSICAL REVIEW LETTERS, 117 (6). 061803-.

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The CP asymmetry in the mixing of B_{s}^{0} and B[over ¯]_{s}^{0} mesons is measured in proton-proton collision data corresponding to an integrated luminosity of 3.0  fb^{-1}, recorded by the LHCb experiment at center-of-mass energies of 7 and 8 TeV. Semileptonic B_{s}^{0} and B[over ¯]_{s}^{0} decays are studied in the inclusive mode D_{s}^{∓}μ^{±}ν[over (-)]_{μ}X with the D_{s}^{∓} mesons reconstructed in the K^{+}K^{-}π^{∓} final state. Correcting the observed charge asymmetry for detection and background effects, the CP asymmetry is found to be a_{sl}^{s}=(0.39±0.26±0.20)%, where the first uncertainty is statistical and the second systematic. This is the most precise measurement of a_{sl}^{s} to date. It is consistent with the prediction from the standard model and will constrain new models of particle physics.

Item Type: Article
Additional Information: All figures and tables, along with any supplementary material and additional information, are available at
Uncontrolled Keywords: LHCb Collaboration
Depositing User: Symplectic Admin
Date Deposited: 14 Sep 2016 11:03
Last Modified: 05 Oct 2023 11:25
DOI: 10.1103/PhysRevLett.117.061803
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