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 \rho^0-\omega mixing in the decay B^\mp\to\rho^\mp\rho^0(\omega)\to\rho^\mp\pi^+ \pi^- permits the extraction of sgn(\sin \alpha), where \alpha is the usual angle of the unitarity triangle, with minimal hadronic uncertainty. In the second, the presence of \pi^0-\eta,\eta' mixing can obscure the extraction of \sin 2\alpha from an isospin analysis in B\to\pi\pi decays.

Comments: 11 pages, 2 figs., LaTeX, epsfig, sprocl, to appear in the proceedings of the Workshop on CP Violation, 3--8 July 1998, Adelaide, Australia, revised to include new B->pi pi num. results