A Measurement of the Total Width, the Electronic Width, and the Mass of the Upsilon(10580) Resonance

Abstract

We present a measurement of the parameters of the $\Upsilon(10580)$ resonance based on a dataset collected with the BABAR detector at the SLAC PEP-II asymmetric $B$ factory. We measure the total width $\Gamma_{\rm tot}$ to be $(20.7\pm1.6\pm2.5) {\rm MeV}$, the electronic partial width $\Gamma_{ee} = (0.321\pm0.017\pm0.029) {\rm keV}$ and the mass $M = (10579.3\pm0.4\pm1.2) {\rm MeV/c^2}$.