Evidence for B0->pi0pi0

Preprint

15 August 2003

preprint
Published by arXiv in arXiv

Abstract

We report evidence for the decay B0->pi0pi0. The analysis is based on a data sample of 152million BBbar pairs collected at the Upsilon(4s) resonance with the Belle detector at the KEKB e+e- storage ring. We find 25.6+9.3/-8.4(stat)+1.6/-1.4(syst) B0->pi0pi0 signal events with a significance of 3.4 standard deviations. We measure the branching fraction to be (1.7+-0.6(stat)+-0.2(syst))*10^{-6}.

Keywords

BRANCHING FRACTION
REPORT EVIDENCE
PAIRS COLLECTED
PI0PI0 SIGNAL
DATA SAMPLE
DECAY B0
STAT

All Related Versions

Version 1, 2003-08-15, ArXiv
Version 2, 2003-08-18, ArXiv
Version 3, 2003-09-08, ArXiv
Version 4, 2003-10-31, ArXiv
Published version: Physical Review Letters, 91 (26), 261801.

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