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Measurement of time-dependent CP violation in B0KS0π0π0 decays

Y. Yusa et al. (Belle Collaboration)
Phys. Rev. D 99, 011102(R) – Published 18 January 2019

Abstract

We report a measurement of time-dependent CP violation in B0KS0π0π0 decays using a data sample of 772×106BB¯ pairs collected by the Belle experiment running at the ϒ(4S) resonance at the KEKB e+e collider. This decay proceeds mainly via a bsdd¯ “penguin” amplitude. The results are sin2ϕ1eff=0.920.31+0.27 (stat.) ±0.11 (syst.) and A=0.28±0.21 (stat.) ±0.04 (syst.), which are the most precise measurements of CP violation in this decay mode to date. The value for the CP-violating parameter sin2ϕ1eff is consistent with that obtained using decay modes proceeding via a bcc¯s “tree” amplitude.

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  • Received 8 October 2018

DOI:https://doi.org/10.1103/PhysRevD.99.011102

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

Published by the American Physical Society

Physics Subject Headings (PhySH)

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

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Vol. 99, Iss. 1 — 1 January 2019

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