Dalitz plot analysis of B±π±π±π decays

B. Aubert et al. (BABAR Collaboration)
Phys. Rev. D 79, 072006 – Published 22 April 2009

Abstract

We present a Dalitz plot analysis of charmless B± decays to the final state π±π±π using a sample of (465±5)×106 BB¯ pairs collected by the BABAR experiment at s=10.58GeV. We measure the branching fractions B(B±π±π±π)=(15.2±0.6±1.2±0.4)×106, B(B±ρ0(770)π±)=(8.1±0.7±1.21.1+0.4)×106, B(B±f2(1270)π±)=(1.57±0.42±0.160.19+0.53)×106, and B(B±π±π±πnonresonant)=(5.3±0.7±0.60.5+1.1)×106, where the uncertainties are statistical, systematic, and model-dependent, respectively. Measurements of branching fractions for the modes B±ρ0(1450)π± and B±f0(1370)π± are also presented. We observe no significant direct CP asymmetries for the above modes, and there is no evidence for the decays B±f0(980)π±, B±χc0π±, or B±χc2π±.

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  • Received 13 February 2009

DOI:https://doi.org/10.1103/PhysRevD.79.072006

©2009 American Physical Society

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Vol. 79, Iss. 7 — 1 April 2009

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