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Measurement of yCP in D0-D0 oscillation using quantum correlations in e+e- → D0D0 at √s = 3.773 GeV

  • M. Ablikim
  • , M. N. Achasov
  • , X. C. Ai
  • , O. Albayrak
  • , M. Albrecht
  • , D. J. Ambrose
  • , A. Amoroso
  • , F. F. An
  • , Q. An
  • , J. Z. Bai
  • , R. Baldini Ferroli
  • , Y. Ban
  • , D. W. Bennett
  • , J. V. Bennett
  • , M. Bertani
  • , D. Bettoni
  • , J. M. Bian
  • , F. Bianchi
  • , E. Boger
  • , O. Bondarenko
  • I. Boyko, R. A. Briere, H. Cai, X. Cai, O. Cakir, A. Calcaterra, G. F. Cao, S. A. Cetin, J. F. Chang, G. Chelkov, G. Chen, H. S. Chen, H. Y. Chen, J. C. Chen, M. L. Chen, S. J. Chen, X. Chen, X. R. Chen, Y. B. Chen, H. P. Cheng, X. K. Chu, G. Cibinetto, D. Cronin-Hennessy, H. L. Dai, J. P. Dai, A. Dbeyssi, D. Dedovich, Z. Y. Deng, H. Muramatsu, R. Poling, BESIII Collaboration

Research output: Contribution to journalArticlepeer-review

Abstract

We report a measurement of the parameter yCP in D0-D-0 oscillations performed by taking advantage of quantum coherence between pairs of D0D-0 mesons produced in e+e- annihilations near threshold. In this work, doubly-tagged D0D-0 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 yCP=(-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.

Original languageEnglish (US)
Pages (from-to)339-346
Number of pages8
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume744
DOIs
StatePublished - May 1 2015

Bibliographical note

Publisher Copyright:
© 2015 The Authors.

Keywords

  • BESIII
  • D-Doscillation
  • Quantum correlation
  • Y

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