Pauli Interference in the 't Hooft Model: Heavy Quark Expansion and Quark-Hadron Duality
Ikaros Bigi, Nikolai Uraltsev
Abstract
Pauli Interference in decays of heavy flavor mesons, a genuinely nonleptonic nonperturbative effect, is considered in the 't Hooft model. Analytic summation of the exclusive decay widths yields the same expression as obtained in the OPE-based approach. Threshold-related violations of local duality in PI are found to be suppressed. A novel case is identified where the OPE effect is completely saturated by a single final state.
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