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

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

2003-04-09

arxiv.org/abs/hep-ph/0304085v3

Phys.Rev. D68 (2003) 033003

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 7 figures, Version 2: Fixed typos; add reference; Version 3: fixed latex glitch

Scientific paper

10.1103/PhysRevD.68.033003

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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