Dalitz Plot Analysis of B+- --> pi+-pi+-pi-+ Decays

Details Dalitz Plot Analysis of B+- --> pi+-pi+-pi-+ Decays Dalitz Plot Analysis of B+- --> pi+-pi+-pi-+ Decays

2009-02-12

arxiv.org/abs/0902.2051v2

Phys.Rev.D79:072006,2009

Physics

High Energy Physics

High Energy Physics - Experiment

16 pages, 8 postscript figures, published in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.79.072006

We present a Dalitz plot analysis of charmless B+- decays to the final state pi+-pi+-pi-+ using a sample of (465+-5)x10^-6 BBbar pairs collected by the BABAR experiment at \sqrt{s} = 10.58 GeV. We measure the branching fractions BF(B+- --> pi+-pi+-pi-+) = (15.2+-0.6+-1.2+-0.4)x10^-6, BF(B+- --> rho0(770)pi+-) = (8.1+-0.7+-1.2^{+0.4}_{-1.1})x10^-6, BF(B+- --> f2(1270)pi+-) = (1.57+-0.42+-0.16^{+0.53}_{-0.19})x10^-6, and BF(B+- --> pi+-pi+-pi-+ nonresonant) = (5.3+-0.7+-0.6^{+1.1}_{-0.5})x10^-6, where the uncertainties are statistical, systematic, and model-dependent, respectively. Measurements of branching fractions for the modes B+- --> rho0(1450)pi+- and B+- --> f0(1370)pi+- are also presented. We observe no significant direct CP asymmetries for the above modes, and there is no evidence for the decays B+- --> chiC0 pi+-, or B+- --> chiC2 pi+-.

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