Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/114424
Title: Measurement of the CP Asymmetry in B-s(0) - (0)(s) Mixing
Author: LHCb Collaboration
Garrido Beltrán, Lluís
Graugés Pous, Eugeni
Rives Molina, Vicente José
Graciani Díaz, Ricardo
Picatoste Olloqui, Eduardo
Calvo Gómez, M.
Gascón Fora, David
Marin Benito, C
Vilasis-Cardona, X.
Keywords: Interaccions d'hadrons
Mesons (Física nuclear)
Violació CP (Física nuclear)
Hadron interactions
Mesons (Nuclear physics)
CP violation (Nuclear physics)
Issue Date: 5-Aug-2016
Publisher: American Physical Society
Abstract: The CP asymmetry in the mixing of B-s(0) and (B) over bar (0)(s) mesons is measured in proton-proton collision data corresponding to an integrated luminosity of 3.0 fb(-1), recorded by the LHCb experiment at center-of-mass energies of 7 and 8 TeV. Semileptonic B-s(0) and (B) over bar (s) (0) decays are studied in the inclusive mode D-s(-/+)mu(+/-)nu((-)) X-mu with the D-s(-/+) mesons reconstructed in the K+K-pi(-/+) final state. Correcting the observed charge asymmetry for detection and background effects, the CP asymmetry is found to be a(sl)(s) = (0.39 +/- 0.26 +/- 0.20)%, where the first uncertainty is statistical and the second systematic. This is the most precise measurement of a(sl)(s) to date. It is consistent with the prediction from the standard model and will constrain new models of particle physics.
Note: Reproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.117.061803
It is part of: Physical Review Letters, 2016, vol. 117, num. 6, p. 061803
Related resource: https://doi.org/10.1103/PhysRevLett.117.061803
URI: http://hdl.handle.net/2445/114424
ISSN: 0031-9007
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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