Ablikim, M.Achasov, M. N.Ai, X. C.Albayrak, O.Albrecht, M.Ambrose, D. J.Amoroso, A.Lou, Xinchou2015-08-282015-08-282015-04-092015-04-090370-2693http://hdl.handle.net/10735.1/4585We report a measurement of the parameter (γCP) in D⁰-D̅⁰ oscillations performed by taking advantage of quantum coherence between pairs of D⁰-D̅⁰ mesons produced in e⁺e⁻ annihilations near threshold. In this work, doubly-tagged D⁰-D̅⁰ events, where one D decays to a CP eigenstate and the other D decays in a semileptonic mode, are reconstructed using a data sample of 2.92 fb⁻¹ collected with the BESIII detector at the center-of-mass energy of √s = 3.773 GeV. We obtain (γCP) = (-2.0 ±1.3 ± 0.7)%, where the first uncertainty is statistical and the second is systematic. This result is compatible with the current world average.en-USCC BY 4.0 (Attribution)©2015 The Authors.http://creativecommons.org/licenses/by/4.0/D MesonsPionsCharmed particles (Nuclear physics)KaonsTextAblikim, M., M. N. Achasov, X. C. Ai, O. Albayrak, et al. 2015. "Measurement of_{yCP} in D⁰-D̅⁰ oscillation using quantum correlations in e⁺e⁻ → D⁰-D̅⁰ at √s = 3.773 GeV." Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 744: 339-346.744