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http://hdl.handle.net/2445/56384| Title: | First measurement of time-dependent CP violation in B0s→K+K− decays |
| Author: | Calvo Gómez, Míriam Camboni, Alessandro Comerma Montells, Albert Garrido Beltrán, Lluís Graciani Díaz, Ricardo Graugés Pous, Eugeni Oyanguren Campos, Arantza de Pérez-Calero Yzquierdo, Antonio Picatoste Olloqui, Eduardo Potterat, Cédric Rives Molina, Vicente José Ruiz, Hugo (Ruiz Pérez) Ruiz Valls, Pablo Vilasis-Cardona, Xavier 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 |
| URI: | http://hdl.handle.net/2445/56384 |
| Related resource: | http://dx.doi.org/10.1007/JHEP10(2013)183 |
| ISSN: | 1126-6708 |
| Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB)) |
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