Getting SM and New Physics CP phases from $B$ Decays

Abstract

A method to extract Standard Model(SM) CP phases involving B decays is presented. The method involves a pair of decays where one decay receives a significant $b\to d$ penguin contribution while the second has a significant $b\to s$ penguin contribution, but is dominated by a single amplitude. SM CP phase information is obtained using the fact that the $b\to s$ transition amplitude is related by SU(3) to a piece of the amplitude with the $b\to d$ transition. If there is significant new physics only in $b\to s$ transitions and not in $b\to d$ transitions then this method can be used to measure new physics(NP) phases.

Comments: 9 pages, talk presented at 2004 Phenomenology Symposium at Madison, US