Dalitz plot analysis of B-+/-->pi(+/-)pi(+/-)pi(-/+) decays

We present a Dalitz plot analysis of charmless B^± decays to the final state π^± π^± π^(-/+) using a sample of (465 ± 5)X 10^6 BB pairs collected by the BABAR experiment at √s = 10:58 GeV. We measure the branching fractions B(B^± → π^± π^± π^(-/+))= (15:2 ± 0:6 ± 1:2 ± 0:4)X 10^(-6), B(B^± → p^o(770)π^±)=(8:1 ± 0:7 ± 1:2^(+0:4)_(-1:1) X 10^(-6), B(B^± → f_2 (1270)π^±) = (1:57 ± 0:42 ± 0:16^(+0:53)_(-0:19) X 10^(-6), and B(B^± → π^± π^± π^(-/+) nonresonant)=(5:3 ± 0:7 ± 0:6^(+1:1)_(-0.5))X 10^(-6), where the uncertainties are statistical, systematic, and model-dependent, respectively. Measurements of branching fractions for the modes B^± → p^0(1450)π^± and B^± → f_0 (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^± → f_0 (980)π^±, B^± → X_(c0)π^±, or B^± → X_(c2)π^±.