%0 Journal Article %T Measurement of the Charm-Mixing Parameter y(CP) %A LHCb Collaboration (Aaij, R. et al %A Garcia Martin, L. M. %A Henry, L. %A Martinez-Vidal, F. %A Oyanguren, A. %A Remon Alepuz, C. %A Ruiz Vidal, J. %A Sanchez Mayordomo, C. %J Physical Review Letters %D 2019 %V 122 %N 1 %I Amer Physical Soc %@ 0031-9007 %G English %F LHCbCollaborationAaij_etal2019 %O WOS:000455164600004 %O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=3870), last updated on Sun, 20 Jan 2019 15:14:43 +0000 %X A measurement of the charm-mixing parameter Y-CP using D-0 -> K+K-, D-0 -> pi(+)pi(-), and D-0 -> K-pi(+)decays is reported. The D-0 mesons are required to originate from semimuonic decays of B- and (B) over bar (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 c p 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. %R 10.1103/PhysRevLett.122.011802 %U http://arxiv.org/abs/1810.06874 %U https://doi.org/10.1103/PhysRevLett.122.011802 %P 011802-10pp