Determination of the CP Phase $γ$ with Possibility of New Physics

Details Determination of the CP Phase $γ$ with Possibility of New Physics Determination of the CP Phase $γ$ with Possibility of New Physics

2001-03-29

arxiv.org/abs/hep-ph/0103319v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, LaTeX; Using two-column style file (ltwol.sty); To be published in the Proceedings of the Fourth International Worksh

Scientific paper

We propose a new method to extract the CP violating weak phase $\gamma$ in the CKM paradigm of the Standard Model, using $B^- \to D^0 \pi^- \to f \pi^-$ and $B^- \to \bar D^0 \pi^- \to f \pi^-$ decays, where $f$ are final states such as $K^+ \pi^-$, $K^+ \rho^-$, $K \pi\pi$, {\it etc.} We also study the experimental feasibility of our new method. With possibility of new phases in the CKM matrix, we re-examine some of the previously proposed methods to determine $\gamma$, and find that it would be in principle possible to identify $\gamma$ and a new phase angle $\theta$ separately.

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