Consistent Dalitz plot analysis of Cabibbo-favored D+ - (K)over-bar pi pi(+) decays

摘要

We resume the study of the Cabibbo-favored charmed-meson decays D+ - (K)over-bar pi pi(+ )in a dispersive framework that satisfies unitarity, analyticity, and crossing symmetry by construction. The formalism explicitly describes the strong final-state interactions between all three decay products and relies on pion-pion and pion-kaon phase shift input. For the first time, we show that the D+ - K-s pi(0)pi(+ )Dalitz plot obtained by the BESIII collaboration as well as the D+ - K-pi(+)pi(+ )Dalitz plot data by CLEO and FOCUS can be described consistently, exploiting the isospin relation between the two coupled decay channels that provides better constraints on the subtraction constants. (C) 2018 The Author(s). Published by Elsevier B.V.