Evidence for B0->pi0pi0
高能物理 - 实验
2008-11-26 v4
摘要
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}.
引用
@article{arxiv.hep-ex/0308040,
title = {Evidence for B0->pi0pi0},
author = {The Belle Collaboration and S. H. Lee},
journal= {arXiv preprint arXiv:hep-ex/0308040},
year = {2008}
}
备注
Submitted to PRL