Weak Phases and CP Violation
Abstract
Description
Time-dependent CP asymmetries in $B^0$ decays from interference of $B^0$-$\bar B^0$ mixing and $b\to c\bar cs, u\bar ud, sq\bar q$, and direct asymmetries from interference of $b\to c\bar us$ and $b\to u\bar cs$ are studied, improving errors in the weak phases $β$ and $γ$ to $\pm 1^\circ$ and $\pm 7^\circ$, respectively. Two kinds of tests for New Physics are discussed: 1. Deviations of asymmetries in $b\to sq\bar q$ decays from $\sin 2β\sinΔmt$. 2. Violation of a sum rule for direct asymmetries in $B\to Kπ$.
7 pages, talk presented at Beauty 2005, Assisi, Italy, June 20-24, 2005; few numerical corrections
7 pages, talk presented at Beauty 2005, Assisi, Italy, June 20-24, 2005; few numerical corrections