Towards Determining φ_1 with B\to D^(*)\bar{D}^(*)

Details Towards Determining φ_1 with B\to D^(*)\bar{D}^(*) Towards Determining φ_1 with B\to D^(*)\bar{D}^(*)

1997-02-10

arxiv.org/abs/hep-ph/9702297v2

Phys.Rev. D56 (1997) 341-347

Physics

High Energy Physics

High Energy Physics - Phenomenology

Latex 14 pages. This was indeed the submission version, which is slightly different from the original hep-ph version. Accepted

Scientific paper

10.1103/PhysRevD.56.341

We present an isospin analysis of the decay modes B\to D\bar{D}, D^*\bar{D}, D\bar{D}^* and D^*\bar{D}^*, which allows determination of the final-state interaction phases. As these transitions have branching ratios of the order 10^{-4} or larger, they could be useful in detecting the CP- violating phase \phi_1 \equiv \arg (-V^*_{cb} V_{cd} V_{tb} V^*_{td} ) in the first-round experiments of a B-meson factory. The problem of penguin pollution may still be present. Once the Kobayashi-Maskawa matrix elements are known, it is possible to obtain the magnitudes and relative phases of hadronic matrix elements for B\to D^{(*)}\bar{D}^{(*)}. This will in turn lead to some information about the penguin pollution.

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