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

TL;DR

This paper reports precise measurements of the Upsilon(10580) resonance's total width, electronic width, and mass using data from the BABAR detector at SLAC, providing key parameters for understanding bottomonium states.

Contribution

The study provides the first precise measurements of the Upsilon(10580) resonance parameters using the BABAR detector, improving the accuracy of these fundamental properties.

Findings

Total width measured as (20.7±1.6±2.5) MeV

Electronic width measured as (0.321±0.017±0.029) keV

Mass measured as (10579.3±0.4±1.2) MeV/c^2

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 $M = (10579.3\pm0.4\pm1.2) {\rm MeV/c^2}$.