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Title: | Measurement of the time-integrated CP asymmetry in D 0 → KS 0 KS 0 decays |
Author: | Alfonso Albero, Alejandro Calvo Gómez, Míriam Camboni, Alessandro Coquereau, Samuel Garrido Beltrán, Lluís Gascón Fora, David Gironella Gironell, Pere Graciani Díaz, Ricardo Graugés Pous, Eugeni Vazquez Gomez, R. Marin Benito, Carla 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: | 2018 |
Publisher: | Springer Verlag |
Abstract: | Abstract: A measurement of the time-integrated CP asymmetry in D0 → K0 SK0 S decays is reported. The data correspond to an integrated luminosity of about 2 fb−1 collected in 2015-2016 by the LHCb collaboration in pp collisions at a centre-of-mass energy of 13 TeV. The D0 candidate is required to originate from a D∗+ → D0π + decay, allowing the determination of the flavour of the D0 meson using the pion charge. The D0 → K+K− decay, which has a well measured CP asymmetry, is used as a calibration channel. The CP asymmetry for D0 → K0 SK0 S is measured to be A CP (D0 → K0 SK0 S ) = (4.3 ± 3.4 ± 1.0)%, where the first uncertainty is statistical and the second is systematic. This result is combined with the previous LHCb measurement at lower centre-of-mass energies to obtain A CP (D0 → K0 SK0 S ) = (2.3 ± 2.8 ± 0.9)%. Keywords: Charm physics, CP violation, Flavor physics, Hadron-Hadron scattering (experiments) |
Note: | Reproducció del document publicat a: https://doi.org/10.1007/JHEP11(2018)048 |
It is part of: | Journal of High Energy Physics, 2018, vol. 2018, num. 11, p. 1-19 |
URI: | http://hdl.handle.net/2445/185377 |
Related resource: | https://doi.org/10.1007/JHEP11(2018)048 |
ISSN: | 1126-6708 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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