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 language | English (US) |
|---|---|
| Pages (from-to) | 339-346 |
| Number of pages | 8 |
| Journal | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
| Volume | 744 |
| DOIs | |
| State | Published - May 1 2015 |
Bibliographical note
Publisher Copyright:© 2015 The Authors.
Keywords
- BESIII
- D-Doscillation
- Quantum correlation
- Y
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