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- W2008252138 abstract "A vector-meson-dominance model is presented for nonleptonic decays of the charmed mesons $D$ and $F$ into two uncharmed pseudoscalar mesons. Generalized Cabibbo mixing as suggested by the standard six-quark model is incorporated into the vector-pseudoscalar transition junction. Explicit SU(3) mass-splitting factors give distinctive departures from the predictions based on SU(3). Comparison with the SU(3) parametrization and soft-gluon-corrected charmed-quark decay model are discussed. For Cabibbo-favored modes the latter model makes predictions which are identical to those of the SU(3) limit of our vector-meson pole model. A clear test of the pole model is the prediction that $ensuremath{Gamma}({D}^{+}ensuremath{rightarrow}{overline{K}}^{0}{K}^{+})=ensuremath{Gamma}({D}^{0}ensuremath{rightarrow}{K}^{+}{K}^{ensuremath{-}})$. The ${D}^{0}ensuremath{leftrightarrow}{overline{D}}^{0}$ mixing question is touched on briefly, and it is argued that the experimentally measured disparity between ${D}^{0}ensuremath{rightarrow}{K}^{+}{K}^{ensuremath{-}}$ and ${D}^{0}ensuremath{rightarrow}{ensuremath{pi}}^{+}{ensuremath{pi}}^{ensuremath{-}}$ branching ratios means that ${D}^{0}ensuremath{leftrightarrow}{overline{D}}^{0}$ mixing will be a normal ${{tan}^{2}ensuremath{theta}}_{C}$ in amplitude---not suppressed as in the SU(3) limit. The argument is illustrated by the vector-pole-model amplitudes. To organize the decay patterns and to compare different models, we propose a mnemonic quark-graph rule. For $K$ ($D$) decays, the strange- (charmed-) quark decay graphs---called radiation graphs---are asserted to be suppressed relative to others. The $F$-meson decays will be critical in testing this rule. The extension to decays of mesons which carry $b$-quark constituent is outlined briefly." @default.
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- W2008252138 title "Vector-meson dominance and other models of parity-violatingDandFdecays" @default.
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- W2008252138 doi "https://doi.org/10.1103/physrevd.21.2636" @default.
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