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Title: | Measurement of the CP Violation Parameter AΓ in D0→K+K− and D0→π+π− Decays |
Author: | Badalov, Alexey Calvo Gómez, Míriam Camboni, Alessandro Coquereau, Samuel Fernandez, G. Garrido Beltrán, Lluís Gascón Fora, David Graciani Díaz, Ricardo Graugés Pous, Eugeni Marin Benito, Carla Picatoste Olloqui, Eduardo Rives Molina, Vicente José Vilasis-Cardona, Xavier LHCb Collaboration |
Keywords: | Física de partícules Experiments Particle physics Experiments |
Issue Date: | 28-Jun-2017 |
Publisher: | American Physical Society |
Abstract: | Asymmetries in the time-dependent rates of D-0 -> K+K- and D-0 -> pi(+)pi(-)decays are measured in a pp collision data sample collected with the LHCb detector during LHC Run 1, corresponding to an integrated luminosity of 3 fb(-1). The asymmetries in effective decay widths between D-0 and (D) over bar (0) decays, sensitive to indirect CP violation, are measured to be A(r)(K+K-) = (-0.30 +/- 0.32 0.10) x 10(-3) and A(r) pi(+)pi(-)) = (0.46 +/- 0.58 +/- 0.12) x 10(-3), where the first uncertainty is statistical and the second systematic. These measurements show no evidence for CP violation and improve on the precision of the previous best measurements by nearly a factor of two. |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.118.261803 |
It is part of: | Physical Review Letters, 2017, vol. 118, num. 26, p. 261803 |
URI: | http://hdl.handle.net/2445/132730 |
Related resource: | https://doi.org/10.1103/PhysRevLett.118.261803 |
ISSN: | 0031-9007 |
Appears in Collections: | Articles publicats en revistes (Enginyeria Electrònica i Biomèdica) Articles publicats en revistes (Física Quàntica i Astrofísica) Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB)) |
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