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

A. I. Sanda·Zhi-zhong Xing
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Abstract

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 ϕ_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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A. I. Sanda, Zhi-zhong Xing. 1997-03-15. Towards Determining ϕ_1 with B\to D^(*)\bar{D}^(*). https://doi.org/10.1103/physrevd.56.341

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