Abstract
We present preliminary measurements of time-dependent CP asymmetries in neutral B meson decays to {pi}{sup +}{pi}{sup -} and {pi}{sup +}{pi}{sup -}{pi}{sup 0} final states, where the latter is measured in the region of the Dalitz plane dominated by the {rho} resonance. We also present preliminary measurements of the branching fraction for the decay B{sup +} {yields} {pi}{sup +}{pi}{sup 0} and an improved upper limit for B{sup 0} {yields} {pi}{sup 0}{pi}{sup 0}, both of which are needed to extract the CP parameter {alpha} from the time-dependent CP asymmetry in the {pi}{sup +}{pi}{sup -} channel. These results are obtained from a data sample of approximately 88 million {Upsilon}(4S) {yields} B{bar B} decays collected with the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC.
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