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Hadronic and radiative $D^*$ decays

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abstract

A recent measurement of the total $D^{*+}$ width, $\Gamma_{\rm tot}(D^{*+}) = (83.3 \pm 1.3 \pm 1.4)$ keV, is shown to be close to earlier predictions based on the single-quark-transition hypothesis. Those predictions are updated using more recent masses and branching fractions to a value of 80.4 keV, with a small uncertainty associated with the radiative branching fractions of $D^{*0}$ and $D^{*+}$. A prediction for the total width of $D_2(2460)$ and its partial width into $D^* \pi$ and $D \pi$ is also updated, and found to be in agreement with experiment.

fields

hep-ph 1

years

2026 1

verdicts

UNVERDICTED 1

representative citing papers

Nonexistence of hidden-charm pentaquarks in $J/\psi$ photoproduction

hep-ph · 2026-06-10 · unverdicted · novelty 4.0

Hidden-charm pentaquarks do not appear in J/ψ photoproduction because rescattering from ar{D}^{(*)}Σ_c intermediate states is suppressed relative to ar{D}^{(*)}Λ_c by a factor of roughly five in the relevant couplings.

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  • Nonexistence of hidden-charm pentaquarks in $J/\psi$ photoproduction hep-ph · 2026-06-10 · unverdicted · none · ref 28 · internal anchor

    Hidden-charm pentaquarks do not appear in J/ψ photoproduction because rescattering from ar{D}^{(*)}Σ_c intermediate states is suppressed relative to ar{D}^{(*)}Λ_c by a factor of roughly five in the relevant couplings.