Evidence for B0->pi0pi0

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}.

Submitted to PRL

References in corpus (11)

• Measurement of the CP-Violating Asymmetry Amplitude sin2beta
• Improved Measurement of Mixing-induced CP Violation in the Neutral B Meson System
• Measurements of Branching Fractions and CP-violating Asymmetries in B0->pi+ pi-, K+ pi-, K+ K- Decays
• Possible Large Direct CP Violations in Charmless B-Decays
• Improving Bounds on Penguin Pollution in B -> pi pi
• Evidence for CP-Violating Asymmetries in B0->pi+pi- Decays and Constraints on the CKM Angle phi2
• Electroweak and Strong Penguins in B^{\pm, 0}\to ππ, πK and KK Decays
• Observation of the Decay $B^{\pm }\to {\pi }^{\pm }{\pi }^0$, Study of $B^{\pm }\to K^{\pm }{\pi }^0$, and Search for $B^0\to {\pi }^0{\pi }^0$
• Indication for Large Rescatterings in Charmless Rare B Decays
• Charmless Hadronic Two-Body B Meson Decays
• Search for $B^0\to {\pi }^0{\pi }^0$ Decay

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