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Title: | Measurement of indirect CP asymmetries in D 0 → K - K + and D 0 → π - π + decays using semileptonic B decays |
Author: | Badalov, Alexey Casanova Mohr, Raimon Garrido Beltrán, Lluís Gascón Fora, David Graciani Díaz, Ricardo Graugés Pous, Eugeni Marin Benito, Carla Picatoste Olloqui, Eduardo Rives Molina, Vicente José Ruiz, Hugo LHCb collaboration |
Keywords: | Hadrons Gran Col·lisionador d'Hadrons Física de partícules Experiments Hadrons Large Hadron Collider (France and Switzerland) Particle physics Experiments |
Issue Date: | 9-Apr-2015 |
Publisher: | Springer Verlag |
Abstract: | Time-dependent CP asymmetries in the decay rates of the singly Cabibbo-suppressed decays D0→ K−K+ and D0→ π −π + are measured in pp collision data corresponding to an integrated luminosity of 3.0 fb−1 collected by the LHCb experiment. The D0 mesons are produced in semileptonic b-hadron decays, where the charge of the accompanying muon is used to determine the initial state as D0 or D0 . The asymmetries in effective lifetimes between D0 and D0 decays, which are sensitive to indirect CP violation, are determined to be AΓ(K−K+) = (−0.134 ± 0.077 +0.026 −0.034)% , AΓ(π −π +) = (−0.092 ± 0.145 +0.025 −0.033)% , where the first uncertainties are statistical and the second systematic. This result is in agreement with previous measurements and with the hypothesis of no indirect CP violation in D0 decays. |
Note: | Reproducció del document publicat a: https://doi.org/10.1007/JHEP04(2015)043 |
It is part of: | Journal of High Energy Physics, 2015, vol. 2015, num. 43, p. 1-20 |
URI: | http://hdl.handle.net/2445/185718 |
Related resource: | https://doi.org/10.1007/JHEP04(2015)043 |
ISSN: | 1126-6708 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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