Abstract
Measurements of charm mixing and violation parameters from the decay-time-dependent ratio of to decay rates and the charge-conjugate ratio are reported. The analysis uses , and charge-conjugate decays, where , and . The collision data are recorded by the LHCb experiment at center-of-mass energies and 8 TeV, corresponding to an integrated luminosity of . The data are analyzed under three hypotheses: (i) mixing assuming symmetry, (ii) mixing assuming no direct violation in the Cabibbo-favored or doubly Cabibbo-suppressed decay amplitudes, and (iii) mixing allowing either direct violation and/or violation in the superpositions of flavor eigenstates defining the mass eigenstates. The data are also combined with those from a previous LHCb study of decays from a disjoint set of candidates produced directly in collisions. In all cases, the data are consistent with the hypothesis of symmetry.
- Received 25 November 2016
DOI:https://doi.org/10.1103/PhysRevD.95.052004
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
© 2017 CERN, for the LHCb Collaboration