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- W1777125966 abstract "We present the results of a time-dependent Dalitz plot analysis of B0→π+π−π0 decays based on a 414 fb−1 data sample that contains 449×106BB¯ pairs. The data were collected on the Υ(4S) resonance with the Belle detector at the KEKB asymmetric energy e+e− collider. Combining our analysis with information on charged B decay modes, we perform a full Dalitz and isospin analysis and obtain a constraint on the quark mixing angle ϕ2, 68°<ϕ2<95° at the 68.3% confidence level for the ϕ2 solution consistent with the standard model. A large standard-model–disfavored region also remains. The branching fractions for the decay processes B0→ρ±(770)π∓ and B0→ρ0(770)π0 are measured to be (22.6±1.1[stat]±4.4[syst])×10−6 and (3.0±0.5[stat]±0.7[syst])×10−6, respectively. These are the first branching fraction measurements of the process B0→ρ(770)π with the lowest resonance ρ(770) explicitly separated from the radial excitations.6 MoreReceived 25 October 2007DOI:https://doi.org/10.1103/PhysRevD.77.072001©2008 American Physical Society" @default.
- W1777125966 created "2016-06-24" @default.
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