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Evidence for B0->pi0pi0
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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}.
Forward citations
Cited by 3 Pith papers
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Accelerating Discovery: Model-Agnostic Likelihoods for the Reinterpretation of Particle Physics Results and their Application to the Belle II $B^{+}\to K^{+}\nu\bar{\nu}$ Measurement
A reweighting method creates model-agnostic likelihoods from histogram analyses, applied to Belle II B+ to K+ nu nubar data for WET constraints and light new physics searches.
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Measurement of the branching fraction, polarization, and time-dependent $CP$ asymmetry in $B^0 \to \rho^+\rho^-$ decays and constraint on the CKM angle $\phi_2$
Belle II reports B(B0 -> rho+ rho-) = (2.89 +0.23/-0.22 +0.29/-0.27) x 10^-5, f_L = 0.921 +0.024/-0.025 +0.017/-0.015, S = -0.26 +/- 0.19 +/- 0.08, C = -0.02 +/- 0.12 +0.06/-0.05, and a derived phi2 = (92.6 +4.5/-4.7)...
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Measurement of $B \to K{}^{*}(892)\gamma$ decays at Belle II
Belle II's first measurement of B→K*(892)γ decays yields branching fractions, CP asymmetries, and an isospin asymmetry consistent with the Standard Model and previous experiments.
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