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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
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Official URL: https://doi.org/10.1007/jhep08(2017)037
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 | ||||||
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| Divisions: | Faculty of 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: |
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| Volume: | 2017 | ||||||
| Number: | 8 | ||||||
| Article Number: | 37 | ||||||
| DOI: | 10.1007/jhep08(2017)037 | ||||||
| Status: | Peer Reviewed | ||||||
| Publication Status: | Published | ||||||
| Publisher Statement: | |||||||
| Access rights to Published version: | Restricted or Subscription Access |
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