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Title: Measurement of the CP-Violating Phase ϕs in ¯B0s→D+sD−s Decays
Author: Badalov, Alexei
Calvo Gómez, Míriam
Garrido Beltrán, Lluís
Graciani Díaz, Ricardo
Graugés Pous, Eugeni
Marin Benito, Carla
Picatoste Olloqui, Eduardo
Rives Molina, Vicente José
Ruiz, Hugo (Ruiz Pérez)
Vilasis-Cardona, Xavier
LHCb Collaboration
Keywords: Física de partícules
Particle physics
Issue Date: 20-Nov-2014
Publisher: American Physical Society
Abstract: We present a measurement of the C P -violating weak mixing phase ϕ s using the decay ¯ B 0 s → D + s D − s in a data sample corresponding to 3.0   fb − 1 of integrated luminosity collected with the LHCb detector in p p collisions at center-of-mass energies of 7 and 8 TeV. An analysis of the time evolution of the system, which does not use the constraint | λ | = 1 to allow for the presence of C P violation in decay, yields ϕ s = 0.02 ± 0.17 ( stat ) ± 0.02 ( syst )     rad , | λ | = 0.91 + 0.18 − 0.15 ( stat ) ± 0.02 ( syst ) . This result is consistent with the standard model expectation.
Note: Reproducció del document publicat a:
It is part of: Physical Review Letters, 2014, vol. 113, num. 21, p. 211801
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ISSN: 0031-9007
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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