Branching Fraction and CP Asymmetries of $B^0 \to K^0_S K^0_S K^0_S$

TL;DR

This paper reports measurements of the branching fraction and CP asymmetries in $B^0 o K^0_S K^0_S K^0_S$ decays, providing insights into CP violation in B meson decays using data from the BaBar experiment.

Contribution

First measurement of branching fraction and CP asymmetries for $B^0 o K^0_S K^0_S K^0_S$ decays with a large data sample from BaBar.

Findings

Branching fraction: (6.9^{+0.9}_{-0.8} ext{(stat)} ext{+0.6}_{-0.6} ext{(syst)}) imes 10^{-6}

CP asymmetry C: -0.34^{+0.28}_{-0.25} ext{(stat)} ext{+0.05}_{-0.05} ext{(syst)}

CP asymmetry S: -0.71^{+0.38}_{-0.32} ext{(stat)} ext{+0.04}_{-0.04} ext{(syst)}

Abstract

We present measurements of the branching fraction and time-dependent CP-violating asymmetries in $B^0 \to K^0_s K^0_s K^0_s$ decays based on 227 million $\Upsilon(4S) \to B \bar{B}$ decays collected with the BaBar detector at the PEP-II asymmetric-energy $B$ Factory at SLAC. We obtain a branching fraction of $(6.9^{+0.9}_{-0.8}\pm 0.6)\times 10^{-6},$ and CP asymmetries $C = -0.34^{+0.28}_{-0.25} \pm 0.05$ and $S = -0.71^{+0.38}_{-0.32} \pm 0.04,$ where the first uncertainties are statistical and the second systematic.