Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/56384
Title: First measurement of time-dependent CP violation in B0s→K+K− decays
Author: Calvo Gómez, M.
Camboni, Alessandro
Comerma Montells, Albert
Garrido Beltrán, Lluís
Graciani Díaz, Ricardo
Graugés Pous, Eugeni
Oyanguren, A.
Pérez-Calero Yzquierdo, Antonio
Picatoste Olloqui, Eduardo
Potterat, Cédric
Rives Molina, Vicente José
Ruiz, Hugo (Ruiz Pérez)
Ruiz Valls, P.
Vilasis-Cardona, X.
LHCb Collaboration
Keywords: Partícules (Física nuclear)
Simetria (Física)
Cromodinàmica quàntica
Particles (Nuclear physics)
Symmetry (Physics)
Quantum chromodynamics
Violació CP (Física nuclear)
Issue Date: Oct-2013
Publisher: Springer Verlag
Abstract: Direct and mixing-induced CP-violating asymmetries in B0s→K+K− decays are measured for the first time using a data sample of pp collisions, corresponding to an integrated luminosity of 1.0 fb−1, collected with the LHCb detector at a centre-of-mass energy of 7 TeV. The results are C KK  = 0.14 ± 0.11 ± 0.03 and S KK  = 0.30 ± 0.12 ± 0.04, where the first uncertainties are statistical and the second systematic. The corresponding quantities are also determined for B 0 → π + π − decays to be C ππ  = −0.38 ± 0.15 ± 0.02 and S ππ  = −0.71 ± 0.13 ± 0.02, in good agreement with existing measurements.
Note: Reproducció del document publicat a: http://dx.doi.org/10.1007/JHEP10(2013)183
It is part of: Journal of High Energy Physics, 2013, vol. 183, p. 1-26
Related resource: http://dx.doi.org/10.1007/JHEP10(2013)183
URI: http://hdl.handle.net/2445/56384
ISSN: 1126-6708
Appears in Collections:Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))
Articles publicats en revistes (Física Quàntica i Astrofísica)

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