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http://hdl.handle.net/2445/114429| Title: | Measurement of the Difference of Time-Integrated CP Asymmetries in D0 → K-K+ and D0 → π-π + Decays |
| Author: | 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 |
| Keywords: | Mesons (Física nuclear) Violació CP (Física nuclear) Simetria (Física) Mesons (Nuclear physics) CP violation (Nuclear physics) Symmetry (Physics) |
| Issue Date: | 13-May-2016 |
| Publisher: | American Physical Society |
| Abstract: | 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. |
| Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.116.191601 |
| It is part of: | Physical Review Letters, 2016, vol. 116, num. 19, p. 191601 |
| URI: | http://hdl.handle.net/2445/114429 |
| Related resource: | https://doi.org/10.1103/PhysRevLett.116.191601 |
| ISSN: | 0031-9007 |
| 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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