Discrete Ambiguities in B-Decay CP Asymmetries and the Search for New Physics
Abstract
The first measurements of CP violation in the B system will probably extract 2α, 2β and 2γ. Assuming that the CP angles α, β and γ are the interior angles of the unitarity triangle, this determines the angle set (α,β,γ) up to a twofold discrete ambiguity. The presence of this discrete ambiguity can make the discovery of new physics difficult: if only one of the two solutions is consistent with constraints from other measurements in the B and K systems, one is not sure whether new physics is present or not. I present examples of this situation, and discuss ways to resolve the discrete ambiguity.
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