Non-leptonic B-decays, CP violation & the UT

Abstract

We study the implication of the time-dependent CP asymmetry in $B\to {\pi }^{+}{\pi }^{-}$ decays on the extraction of weak phases taking into account the precise measurement of $\sin 2\beta$, obtained from the ``gold-plated''mode $B\to J/\psi K_S$. Predictions and uncertainties for the hadronic parameters are investigated in QCD factorization. Furthermore, independent theoretical and experimental tests of the factorization framework are briefly discussed. Finally, a model-independent bound on the unitarity triangle from CP violation in $B\to {\pi }^{+}{\pi }^{-}$ and $B\to J/\psi K_S$ is derived.

Comments: 4 pages; 4 figures (requires epsfig, psfrag); To appear in the proceedings of the 11th International Conference on Quantum Chromodynamics (QCD 04), Montpellier, France, 5--10th July 2004