Measurement of CP Asymmetries in B0 --> K0S K0S K0S Decays

TL;DR

This paper reports measurements of time-dependent CP asymmetries in B0 decays to three K0S mesons, providing insights into CP violation consistent with the Standard Model.

Contribution

First measurement of CP asymmetries in B0 --> K0S K0S K0S decays using a large data sample from BABAR.

Findings

CP asymmetry parameters measured: C = 0.02 +/- 0.21 +/- 0.05, S = -0.71 +/- 0.24 +/- 0.04

Results are consistent with Standard Model predictions

Data sample includes 384 million Y(4S) decays

Abstract

We present measurements of the time-dependent CP-violating asymmetries in B0 --> K0S K0S K0S decays based on 384 million Y(4S) decays collected with the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. We obtain the CP asymmetry parameters C = 0.02 +/- 0.21 +/- 0.05 and S = -0.71 +/- 0.24 +/- 0.04, where the first uncertainties are statistical and the second systematic. These results are consistent with standard model expectations.