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Title: Measurement of the flavour-specific CP-violating asymmetry a(sl)(s) in B-s(0) decays
Author: Camboni, Alessandro
Comerma-Montells, A.
Garrido Beltrán, Lluís
Graciani Díaz, Ricardo
Graugés Pous, Eugeni
Picatoste Olloqui, E.
Potterat, C.
Rives Molina, V.
Ruiz, Hugo
LHCb Collaboration
Keywords: Hadrons
Gran Col·lisionador d'Hadrons
Física de partícules
Large Hadron Collider (France and Switzerland)
Particle physics
Issue Date: Jan-2014
Publisher: Elsevier B.V.
Abstract: The CP-violating asymmetry a s sl is studied using semileptonic decays of B0 s and B0 s mesons produced in pp collisions at a centre-of-mass energy of 7 TeV at the LHC, exploiting a data sample corresponding to an integrated luminosity of 1.0 fb−1 . The reconstructed final states are D± s µ ∓, with the D± s particle decaying in the φπ± mode. The D± s µ ∓ yields are summed over B0 s and B0 s initial states, and integrated with respect to decay time. Data-driven methods are used to measure efficiency ratios. We obtain a s sl = (−0.06 ± 0.50 ± 0.36)%, where the first uncertainty is statistical and the second systematic.
Note: Reproducció del document publicat a:
It is part of: Physics Letters B, 2014, vol. 728, p. 607-615
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ISSN: 0370-2693
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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