Enhancement of CP Violation in B+- to Kᵢ+- D⁰ By Resonant Effects
Atwood, David · Eilam, Gad · Gronau, Michael · Soni, Amarjit
Original · EN
Resonance width effects in charged B decays to neutral D mesons and excited kaon states Kᵢ 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+→ K+ᵢ D⁰→ (Kπ)+ D⁰. 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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