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Title

Measurement of the Charm-Mixing Parameter yCP

AuthorsGarcía Martín, L.M.; Henry, L.; Jashal, B.; Martínez-Vidal, Fernando ; Oyanguren, Arantza ; Remón Alepuz, Clara; Ruiz Vidal, Joan; Sánchez Mayordomo, Carlos ; LHCb Collaboration
Issue DateJan-2019
PublisherAmerican Physical Society
CitationPhysical Review Letters 122 (1): 011802 (2019)
AbstractA measurement of the charm-mixing parameter yCP using D0→K+K-, D0→π+π-, and D0→K-π+ decays is reported. The D0 mesons are required to originate from semimuonic decays of B- and B0 mesons. These decays are partially reconstructed in a data set of proton-proton collisions at center-of-mass energies of 7 and 8 TeV collected with the LHCb experiment and corresponding to an integrated luminosity of 3 fb-1. The yCP parameter is measured to be (0.57±0.13(stat)±0.09(syst))%, in agreement with, and as precise as, the current world-average value.
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevLett.122.011802
URIhttp://hdl.handle.net/10261/204886
Identifiersdoi: 10.1103/PhysRevLett.122.011802
issn: 1079-7114
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