Measurement of the B0 --> K0S K0S K0S Branching Fraction

TL;DR

This paper reports a preliminary measurement of the branching fraction for the decay B0 to three Ks mesons, using data from the BABAR detector, providing insights into B meson decay processes.

Contribution

The study presents the first measurement of the B0 to K0sK0sK0s decay branching fraction using a large data sample from the BABAR experiment.

Findings

Branching fraction measured as (6.5 ± 0.8 ± 0.8) × 10^{-6}.

Data collected from 211 million B-Bbar pairs.

Results contribute to understanding B meson decay dynamics.

Abstract

We report a preliminary measurement of the branching fraction for the decay $B^0 \to K^0_sK^0_sK^0_s ,$ where the $K^0_s$ mesons are reconstructed through the decay $K^0_s\to\pi^+ \pi^- .$ The measurement was performed on a sample of $211\times 10^6$ $B\bar{B}$ pairs collected by the BABAR detector running on the $\Upsilon (4S)$ resonance at the PEP-II storage ring. The branching fraction is measured to be $${\cal B}(B^0 \to K^0_sK^0_sK^0_s)= (6.5\pm 0.8\pm 0.8) \times 10^{-6},$$ where the errors are statistical and systematic, respectively.