Measurements related to CKM angle alpha in BABAR
Lydia Roos
Abstract
The BABAR collaboration measurements of the B -> pipi, B -> rhopi and B -> rhorho decays are presented. New results, from a 113 fb-1 data sample, on the time-dependent CP asymmetries of the longitudinally polarized component of the B0 -> rho+rho- channel are Srhorho,long=-0.19 +/- 0.33 +/- 0.11 and Crhorho,long=-0.23 +/- 0.24 +/- 0.14. Constraints on the Unitarity Triangle angle alpha from the pipi and the rhorho systems are derived.
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