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. BondarenkoI. 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 journalArticle

18 Scopus citations

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

Keywords

  • BESIII
  • D-Doscillation
  • Quantum correlation
  • Y

Fingerprint Dive into the research topics of 'Measurement of y<sub>CP</sub> in D<sup>0</sup>-D<sup>0</sup> oscillation using quantum correlations in e<sup>+</sup>e<sup>-</sup> → D<sup>0</sup>D<sup>0</sup> at √s = 3.773 GeV'. Together they form a unique fingerprint.

  • Cite this

    Ablikim, M., Achasov, M. N., Ai, X. C., Albayrak, O., Albrecht, M., Ambrose, D. J., Amoroso, A., An, F. F., An, Q., Bai, J. Z., Baldini Ferroli, R., Ban, Y., Bennett, D. W., Bennett, J. V., Bertani, M., Bettoni, D., Bian, J. M., Bianchi, F., Boger, E., ... BESIII Collaboration (2015). Measurement of yCP in D0-D0 oscillation using quantum correlations in e+e- → D0D0 at √s = 3.773 GeV. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 744, 339-346. https://doi.org/10.1016/j.physletb.2015.04.008