Measurements of Ω− branching fractions

Le résumé fourni par la source

Using ${e}^{+}{e}^{\ensuremath{-}}$ annihilation data taken with the CLEO-c detector, measurements of two major ${\mathrm{\ensuremath{\Omega}}}^{\ensuremath{-}}$ branching fractions have been made using the reaction $\ensuremath{\psi}(2S)\ensuremath{\rightarrow}{\mathrm{\ensuremath{\Omega}}}^{\ensuremath{-}}{\overline{\mathrm{\ensuremath{\Omega}}}}^{+}$. The ${\mathrm{\ensuremath{\Omega}}}^{\ensuremath{-}}$ decay channels are identified through momentum distributions of charged particles, and systematics of the ${\mathrm{\ensuremath{\Omega}}}^{\ensuremath{-}}$ branching fractions have been studied. The results are $\mathcal{B}({\mathrm{\ensuremath{\Omega}}}^{\ensuremath{-}}\ensuremath{\rightarrow}{\mathrm{\ensuremath{\Lambda}}}^{0}{K}^{\ensuremath{-}})=(68.9\ifmmode\pm\else\textpm\fi{}9.5\ifmmode\pm\else\textpm\fi{}4.3)%$ and $\mathcal{B}({\mathrm{\ensuremath{\Omega}}}^{\ensuremath{-}}\ensuremath{\rightarrow}{\mathrm{\ensuremath{\Xi}}}^{0}{\ensuremath{\pi}}^{\ensuremath{-}})=(19.0\ifmmode\pm\else\textpm\fi{}4.0\ifmmode\pm\else\textpm\fi{}1.2)%$.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.