Measurement of the Charm-Mixing Parameter yCP

(LHCb Collaboration)

Research output: Contribution to journalArticle

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

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decay
mesons
protons
center of mass
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collisions
energy

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  • Physics and Astronomy(all)

Cite this

Measurement of the Charm-Mixing Parameter yCP. / (LHCb Collaboration).

In: Physical Review Letters, Vol. 122, No. 1, 011802, 08.01.2019.

Research output: Contribution to journalArticle

(LHCb Collaboration). / Measurement of the Charm-Mixing Parameter yCP. In: Physical Review Letters. 2019 ; Vol. 122, No. 1.
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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.",
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