Search for CP Violation and Measurement of the Branching Fraction in the Decay D0KS0KS0

N. Dash et al. (Belle Collaboration)
Phys. Rev. Lett. 119, 171801 – Published 23 October 2017

Abstract

We report a study of the decay D0KS0KS0 using 921fb1 of data collected at or near the ϒ(4S) and ϒ(5S) resonances with the Belle detector at the KEKB asymmetric energy e+e collider. The measured time-integrated CP asymmetry is ACP(D0KS0KS0)=(0.02±1.53±0.02±0.17)%, and the branching fraction is B(D0KS0KS0)=(1.321±0.023±0.036±0.044)×104, where the first uncertainty is statistical, the second is systematic, and the third is due to the normalization mode (D0KS0π0). These results are significantly more precise than previous measurements available for this mode. The ACP measurement is consistent with the standard model expectation.

  • Figure
  • Received 22 May 2017

DOI:https://doi.org/10.1103/PhysRevLett.119.171801

© 2017 American Physical Society

Physics Subject Headings (PhySH)

  1. Research Areas
  1. Physical Systems
  1. Properties
Particles & Fields

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Vol. 119, Iss. 17 — 27 October 2017

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