Isospin Violation in Hadronic B-Decays

Abstract

I present two disparate examples of isospin violation in hadronic B-decays. In the first, the presence of ρ^0-ωmixing in the decay B^\mp\toρ^\mpρ^0(ω)\toρ^\mpπ^+ π^- permits the extraction of sgn(\sin α), where αis the usual angle of the unitarity triangle, with minimal hadronic uncertainty. In the second, the presence of π^0-η,η' mixing can obscure the extraction of \sin 2αfrom an isospin analysis in B\toππdecays.