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

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LHCb collaboration (Including: Back, J. J., Blake, Thomas, Costa Sobral, Cayo, Crocombe, Andrew, Gershon, T. J., Kreps, Michal, Latham, Thomas, Loh, David, Mathad, Abhijit , O'Hanlon, Daniel P., Poluektov, Anton, Qian, W., Wallace, Charlotte and Wicht, Jean). (2017) Resonances and CP violation in Bs0 and B¯s0→J/ψK+K− decays in the mass region above the ϕ(1020). Journal of High Energy Physics, 2017 (8). 37. doi:10.1007/jhep08(2017)037 ISSN 1029-8479.

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Official URL: https://doi.org/10.1007/jhep08(2017)037

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Abstract

The decays of Bs0 and 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−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.

Item Type: Journal Article
Divisions: Faculty of Science, Engineering and Medicine > Science > Physics
SWORD Depositor: Library Publications Router
Journal or Publication Title: Journal of High Energy Physics
Publisher: Springer Berlin Heidelberg
ISSN: 1029-8479
Official Date: 9 August 2017
Dates:
DateEvent
9 August 2017Published
25 July 2017Accepted
Volume: 2017
Number: 8
Article Number: 37
DOI: 10.1007/jhep08(2017)037
Status: Peer Reviewed
Publication Status: Published
Reuse Statement (publisher, data, author rights):
Access rights to Published version: Restricted or Subscription Access
Date of first compliant deposit: 17 September 2018
Date of first compliant Open Access: 17 September 2018

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