Measurement of <i>y<sub>CP</sub></i> in <i>D</i><SUP>0</SUP>-(<i>D</i>)over-bar<SUP>0</SUP> oscillation using quantum correlations in <i>e</i><SUP>+</SUP><i>e</i><SUP>-</SUP> → <i>D</i><SUP>0</SUP>(<i>D</i>)over-bar<SUP>0</SUP> at √<i>s</i>=3.773 GeV


Ablikim M., Achasov M. N., Ai X. C., Albayrak O., Albrecht M., Ambrose D. J., ...Daha Fazla

PHYSICS LETTERS B, cilt.744, ss.339-346, 2015 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 744
  • Basım Tarihi: 2015
  • Doi Numarası: 10.1016/j.physletb.2015.04.008
  • Dergi Adı: PHYSICS LETTERS B
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.339-346
  • Bursa Uludağ Üniversitesi Adresli: Hayır

Özet

We report a measurement of the parameter y(CP) in D-0-(D) over bar (0) oscillations performed by taking advantage of quantum coherence between pairs of D-0(D) over bar (0) mesons produced in e(+)e(-) annihilations near threshold. In this work, doubly-tagged D-0(D) over bar (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 root s = 3.773 GeV. We obtain y(CP) = (-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. (C) 2015 The Authors. Published by Elsevier B.V.