Implications of a low sin2β: A strategy for exploring new flavor physics

We explore the would-be consequences of a low value of the CP-violating phase sin2βψK. The importance of a reference triangle obtained from measurements that are independent of B–B̄ and K–K̄ mixing is stressed. It can be used to extract separately potential New Physics contributions to mixing in the Bd, Bs and K systems. We discuss several constructions of this triangle, which will be feasible in the near future. The discrete ambiguity is at most two-fold and eventually can be completely removed. Simultaneously, it will be possible to probe for New Physics in loop-dominated rare decays.