Wednesday 21 January 2009 Speaker: Tom Latham (Warwick) Title: Constraints on the CKM Unitarity Triangle from Charmless Threebody Decays at BaBar Abstract: Recent results from BaBar on CP violation in B decays to charmless 3-body final states are presented. The Dalitz-plot and time-dependent analysis techniques are introduced and it is shown how they can be combined to analyse decays such as B0 -> Ks pi+ pi-. The results shown include measurements of the CKM Unitarity Triangle angles beta and gamma, as well as evidence of direct CP violation.