Measurement of the Charm-Mixing Parameter yCP

(LHCb Collaboration)

Research output: Contribution to journalArticle

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Abstract

A 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.

Original languageEnglish (US)
Article number011802
JournalPhysical Review Letters
Volume122
Issue number1
DOIs
StatePublished - Jan 8 2019

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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