Resonances and <i>CP</i> violation in <i>B<sub>s</sub></i><SUP>0</SUP> and (B)over-bar<i><sub>s</sub></i><SUP>0</SUP> →jψK<SUP>+</SUP>K<SUP>-</SUP> decays in the mass region above the <i>I•</i>(1020)



Aaij, R, Adeva, B, Adinolfi, M, Ajaltouni, Z, Akar, S, Albrecht, J, Alessio, F, Alexander, M, Ali, S, Alkhazov, G
et al (show 766 more authors) (2017) Resonances and <i>CP</i> violation in <i>B<sub>s</sub></i><SUP>0</SUP> and (B)over-bar<i><sub>s</sub></i><SUP>0</SUP> →jψK<SUP>+</SUP>K<SUP>-</SUP> decays in the mass region above the <i>I•</i>(1020). JOURNAL OF HIGH ENERGY PHYSICS, 2017 (8).

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Abstract

The decays of Bs0and B¯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−1produced 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.[Figure not available: see fulltext.]

Item Type: Article
Uncontrolled Keywords: B physics, CP violation, Spectroscopy, Hadron-Hadron scattering (experiments)
Depositing User: Symplectic Admin
Date Deposited: 11 Sep 2017 12:55
Last Modified: 11 Oct 2023 16:56
DOI: 10.1007/JHEP08(2017)037
Open Access URL: https://arxiv.org/pdf/1704.08217v2.pdf
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3009409