Measurement of the branching fraction and theCP-violating asymmetry for the decayB0→KS0π0

Publisher Website

10 June 2005

journal article
research article
Published by American Physical Society (APS) in Physical Review D

Vol. 71 (11) , 111102
https://doi.org/10.1103/physrevd.71.111102

Abstract

We measure the branching fraction and the

C P

-violating asymmetry of

B^{0} \to K_{S}^{0} π^{0}

decays with

227

million

Υ (4 S) \to B \bar{B}

events collected with the BABAR detector at the PEP-II asymmetric-energy

e^{+} e^{-}

collider at SLAC. We obtain a branching fraction

B (B^{0} \to K^{0} π^{0}) = (11.4 \pm 0.9 \pm 0.6) \times 10^{- 6}

and

C P

-violating asymmetry parameters

C_{K_{S}^{0}} π^{0} = 0.06 \pm 0.18 \pm 0.03

and

S_{K_{S}^{0}} π^{0} = {0.35}_{- 0.33}^{+ 0.30} \pm 0.04

, where the first error is statistical and the second systematic.

Keywords

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