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Role of Charm Factory in Extracting CKM-Phase Information via B --> DK

David Atwood·Amarjit Soni
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Abstract

In this paper we study the impact of data that can be obtained from a Charm Factory on the determination of the CKM parameter gamma from decays of the form B -> D0 K where the D0 decays to specific inclusive and exclusive final states. In particular, for each exclusive final state $f$, the charm factory can determine the strong phase difference between D0-> f and D0-bar -> f by exploiting correlations in psi(3770)-> D0 D0-bar. This provides crucial input to the determination of gamma via the interference of B+- -> K+- D0 -> f with B+- -> K+- D0-bar -> f. We discuss how the method may be generalized to inclusive final states and illustrate with a toy model how such methods may offer one of the best means to determine gamma with 10^8-10^9 B-mesons.

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David Atwood, Amarjit Soni. 2003-07-23. Role of Charm Factory in Extracting CKM-Phase Information via B --> DK. https://doi.org/10.1103/physrevd.68.033003

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