Measurements related to CKM angle alpha in BABAR.

Lydia Roos (1)

1 LPNHE - Laboratoire de Physique Nucléaire et de Hautes Énergies

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 S_{rhorho,long}=-0.19 +/- 0.33 +/- 0.11 and C_{rhorho,long}=-0.23 +/- 0.24 +/- 0.14. Constraints on the Unitarity Triangle angle alpha from the pipi and the rhorho systems are derived.

Mots clés: CP violation; BABAR; unitarity triangle; alpha

Domaines: Physique des Hautes Energies - Expérience [hep-ex]

Lydia Roos. Measurements related to CKM angle alpha in BABAR.. Mar 2004, La Thuile. ⟨hal-00002375⟩