Resonances and CP violation in Bs0 and B¯¯¯¯0s→J/ψK+K−B¯s0→J/ψK+K− decays in the mass region above the ϕ(1020)

, Robert Appleby, Igor Babuschkin, Roger Barlow, William Barter, Alexander Bitadze, Jolanta Brodzicka, Christopher Burr, Lorenzo Capriotti, Shun Chen, Stefano De Capua, Giulio Dujany, Marco Gersabeck, Jonathan Harrison, Christoph Hombach, Suzanne Klaver, George Lafferty, Kevin Maguire, Andrew Mcnab, D MullerChristopher Parkes, Pablo Rodriguez Perez

    Research output: Contribution to journalArticlepeer-review

    Abstract

    The decays of Bs0 and B¯¯¯¯0sB¯s0 mesons into the J/ψK+K− final state are studied in the K+K− mass region above the ϕ(1020) meson in order to determine the resonant substructure and measure the CP-violating phase, ϕs, the decay width, Γs, and the width difference between light and heavy mass eigenstates, ΔΓs. A decay-time dependent amplitude analysis is employed. The data sample corresponds to an integrated luminosity of 3 fb−1 produced in 7 and 8 TeV pp collisions at the LHC, collected by the LHCb experiment. The measurement determines ϕs = 119 ± 107 ± 34 mrad. A combination with previous LHCb measurements using similar decays into the J/ψπ+π− and J/ψϕ(1020) final states gives ϕs = 1 ± 37 mrad, consistent with the Standard Model prediction.
    Original languageEnglish
    JournalThe Journal of High Energy Physics
    DOIs
    Publication statusPublished - 9 Aug 2017

    Fingerprint

    Dive into the research topics of 'Resonances and CP violation in Bs0 and B¯¯¯¯0s→J/ψK+K−B¯s0→J/ψK+K− decays in the mass region above the ϕ(1020)'. Together they form a unique fingerprint.

    Cite this