Discrete Ambiguities in B-Decay CP Asymmetries and the Search for New Physics

Details Discrete Ambiguities in B-Decay CP Asymmetries and the Search for New Physics Discrete Ambiguities in B-Decay CP Asymmetries and the Search for New Physics

2000-03-08

arxiv.org/abs/hep-ph/0003069v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, LaTeX, 1 figure, (requires WS-P8-50x6-00.CLS), to be published in the Proceedings of PASCOS99, 7th International Symp

Scientific paper

The first measurements of CP violation in the B system will probably extract $\sin 2\alpha$, $\sin 2\beta$ and $\cos 2\gamma$. Assuming that the CP angles $\alpha$, $\beta$ and $\gamma$ are the interior angles of the unitarity triangle, this determines the angle set $(\alpha,\beta,\gamma)$ 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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