2026-04-17T05:43:43Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/1144292025-12-05T16:58:35Zcom_2072_1057col_2072_478823col_2072_478904col_2072_478917

urn:hdl:2445/114429 Measurement of the Difference of Time-Integrated CP Asymmetries in D0 → K-K+ and D0 → π-π + Decays Garrido Beltrán, Lluís Gascón Fora, David Graciani Díaz, Ricardo Graugés Pous, Eugeni Marin Benito, Carla Picatoste Olloqui, Eduardo Rives Molina, Vicente José Badalov, Alexey LHCb Collaboration Mesons (Física nuclear) Violació CP (Física nuclear) Simetria (Física) Mesons (Nuclear physics) CP violation (Nuclear physics) Symmetry (Physics) A search for CP violation in D-0 -> K-K+ and D-0 -> pi(-)pi(+) decays is performed using pp collision data, corresponding to an integrated luminosity of 3 fb(-1), collected using the LHCb detector at center-of-mass energies of 7 and 8 TeV. The flavor of the charm meson is inferred from the charge of the pion in D*(+) -> D-0 pi(+) and D*(-) -> (D) over bar (0)pi(-) decays. The difference between the CP asymmetries in D-0 -> K-K+ and D-0 -> pi(-)pi(+) decays, Delta A(CP) A(CP)(K-K+) - A(CP)(pi(-)pi(+)), is measured to be [-0.10 +/- 0.08(stat) +/- 0.03(syst)]%. This is the most precise measurement of a time-integrated CP asymmetry in the charm sector from a single experiment. 2017-07-27T10:05:59Z 2017-07-27T10:05:59Z 2016-05-13 2017-07-27T10:06:00Z info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Reproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.116.191601 Physical Review Letters, 2016, vol. 116, num. 19, p. 191601 https://doi.org/10.1103/PhysRevLett.116.191601 cc-by (c) CERN, 2016 http://creativecommons.org/licenses/by/3.0/es info:eu-repo/semantics/openAccess American Physical Society Articles publicats en revistes (Física Quàntica i Astrofísica)