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Enhancement of CP Violation in B^+- to K_i^+- D^0 By Resonant Effects

David Atwood·Gad Eilam·Michael Gronau·Amarjit Soni
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Abstract

Resonance width effects in charged $B$ decays to neutral $D$ mesons and excited kaon states $K_i$ around 1400 MeV are shown to lead to large calculable final state phases. $CP$ asymmetries are defined for any charged $B$ decay to three pseudoscalar mesons involving intermediate overlapping resonance states. Asymmetries up to about 10$\%$ are found in $B^+\to K^+_i D^0\to (Kπ)^+ D^0$. Decay distributions can be used to determine the weak phase $γ$ of the Cabibbo-Kobayashi-Maskawa (CKM) matrix. No separation of the contributions from individual resonances is required.

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David Atwood, Gad Eilam, Michael Gronau, Amarjit Soni. 1994-09-06. Enhancement of CP Violation in B^+- to K_i^+- D^0 By Resonant Effects. https://doi.org/10.1016/0370-2693(94)01317-6

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