Measurements of B^0 decays to pi^+pi^-pi^0

Abstract

We present preliminary results of searches for exclusive $B^0$ decays to ${\pi }^{+}{\pi }^{-}{\pi }^0$ among 22.7 million $b\bar{b}$ pairs collected by the BABAR experiment from electron-positron collisions near the ${\rm Y}(4S)$ resonance. We measure $\mathcal{B}({\rho }^{\mp }{\pi }^{\pm })=(28.9\pm 5.4\pm 4.3)\times 10^{-6}$, and find no evidence for the presence of any other decay mode in the ${\pi }^{+}{\pi }^{-}{\pi }^0$ Dalitz plot. Upper limits are determined for the branching fractions of $B^0\to {\rho }^0{\pi }^0$, non-resonant $B^0$ decays to ${\pi }^{+}{\pi }^{-}{\pi }^0$ and of several discrete regions of ${\pi }^{+}{\pi }^{-}{\pi }^0$ phase-space. We also measure the direct CP-violating asymmetry between the rates of untagged ${\rho }^{+}{\pi }^{-}$ and ${\rho }^{-}{\pi }^{+}$, finding no significant evidence for an effect.

10 pages, 3 figures, conference paper submitted to LP01

Cited by in corpus (2)

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• BaBar B Decay Results