New Methods for Extracting the CKM Angle $γ$ using $B^\pm\to D^0 K^-$; $\bar D^0 K^-$

Details New Methods for Extracting the CKM Angle $γ$ using $B^\pm\to D^0 K^-$; $\bar D^0 K^-$ New Methods for Extracting the CKM Angle $γ$ using $B^\pm\to D^0 K^-$; $\bar D^0 K^-$

1997-07-03

arxiv.org/abs/hep-ph/9707241v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 0 figures, Conference Proceedings

Scientific paper

In this talk I will discuss the extraction of the CKM angle $\gamma$ at B-factories through the interference of the subprocesses $B^-\to K^- D^0$ and $B^- \to K^-\bar D^0$. This seemingly impossible interference may be accomplished by allowing both $D^0$ and $\bar D^0$ to decay to a common final state. If only CP eigenstate decay modes of the $D$ are considered, the branching ratio for $B^- \to \bar D^0 K^-$ must be experimentally I describe why this determination is likely to be experimentally impossible. On the other hand, if more general $D$ decays are considered, the angle $\gamma$ may then be determined. In fact, it is possible that a reasonable determination of $\gamma$ may be made with O(10^8) B's.

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