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Title: | Resonances and CP violation in B s 0 and {\overline{B}}_s^0\to J/ψ {K}+{K}- decays in the mass region above the ϕ(1020) |
Author: | Camboni, Alessandro Coquereau, S. Fernandez, G. Garrido Beltrán, Lluís Gascon, D. Graciani Diaz, Ricardo Graugés Pous, Eugeni Marin Benito, Carla Picatoste Olloqui, E. Rives Molina, V. Sanchez Gonzalo, D. LHCb Collaboration |
Keywords: | Hadrons Gran Col·lisionador d'Hadrons Física de partícules Experiments Hadrons Large Hadron Collider (France and Switzerland) Particle physics Experiments |
Issue Date: | Aug-2017 |
Publisher: | Springer Verlag |
Abstract: | The decays of B s 0 and {\overline{B}}_s^0 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, ϕ s , the decay width, Γ s , and the width difference between light and heavy mass eigenstates, ΔΓ s . 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 ϕ s = 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 ϕ s = 1 ± 37 mrad, consistent with the Standard Model prediction. |
Note: | Reproducció del document publicat a: https://doi.org/10.1007/JHEP08(2017)037 |
It is part of: | Journal of High Energy Physics, 2017, vol. 2017, num. 37, p. 1-28 |
URI: | http://hdl.handle.net/2445/186437 |
Related resource: | https://doi.org/10.1007/JHEP08(2017)037 |
ISSN: | 1126-6708 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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