Measurement of the Charm-Mixing Parameter y[subscript CP]
Author(s)
Boettcher, Thomas Julian; Craik, Daniel C; Weisser, Constantin; LHCB Collaboration
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A measurement of the charm-mixing parameter y[subscript CP] using D⁰→K⁺K⁻, D⁰→π⁺π⁻, and D⁰→K⁻π⁺ decays is reported. The D^{0} mesons are required to originate from semimuonic decays of B⁻ and B[over ¯]⁰ 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 y[subscript CP] 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.
Date issued
2019-01Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear ScienceJournal
Physical Review Letters
Publisher
American Physical Society
Citation
R. Aaij et al. "Measurement of the Charm-Mixing Parameter y[subscript CP]." Physical Review Letters 122, 1 (January 2019): 011802 © 2019 CERN, for the LHCb Collaboration
Version: Final published version
ISSN
0031-9007
1079-7114
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