Measurement of the Charm-Mixing Parameter y[subscript CP]
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PhysRevLett.122.011802.pdf
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Author(s)
Boettcher, Thomas Julian
Craik, Daniel C
Weisser, Constantin
LHCB Collaboration
Date Issued
January 2019
Journal
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
Abstract
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.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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Creative Commons Attribution 3.0 unported license
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.122.011802
