Observation of the Ωc0 Charmed Baryon at CLEO

Le résumé fourni par la source

The CLEO experiment at the CESR collider has used $13.7{\mathrm{fb}}^{\ensuremath{-}1}$ of data to search for the production of the ${\ensuremath{\Omega}}_{c}^{0}$ (css ground state) in ${e}^{+}{e}^{\ensuremath{-}}$ collisions at $\sqrt{s}\ensuremath{\simeq}10.6\mathrm{GeV}$. The modes used to study the ${\ensuremath{\Omega}}_{c}^{0}$ are ${\ensuremath{\Omega}}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}$, ${\ensuremath{\Omega}}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{0}$, ${\ensuremath{\Xi}}^{\ensuremath{-}}{K}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{+}$, ${\ensuremath{\Xi}}^{0}{K}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}$, and ${\ensuremath{\Omega}}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$. We observe a signal of $40.4\ifmmode\pm\else\textpm\fi{}9.0(\mathrm{stat})$ events at a mass of $2694.6\ifmmode\pm\else\textpm\fi{}2.6(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}1.9(\mathrm{syst})\mathrm{MeV}/{c}^{2}$, for all modes combined.

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