Measurement of the masses and widths of the bottom baryons Σb± and Σb*±

Using data from $p\overline{p}$ collisions at $\sqrt{s}=1.96\text{ }\text{ }\mathrm{TeV}$ recorded by the CDF II detector at the Fermilab Tevatron, we present improved measurements of the masses and first measurements of natural widths of the four bottom baryon resonance states ${\ensuremath{\Sigma}}_{b}^{+}$, ${\ensuremath{\Sigma}}_{b}^{*+}$ and ${\ensuremath{\Sigma}}_{b}^{\ensuremath{-}}$, ${\ensuremath{\Sigma}}_{b}^{*\ensuremath{-}}$. These states are fully reconstructed in their decay modes to ${\ensuremath{\Lambda}}_{b}^{0}{\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}}$ where ${\ensuremath{\Lambda}}_{b}^{0}\ensuremath{\rightarrow}{\ensuremath{\Lambda}}_{c}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ with ${\ensuremath{\Lambda}}_{c}^{+}\ensuremath{\rightarrow}p{K}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}$. The analysis is based on a data sample corresponding to an integrated luminosity of $6.0\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ collected by an online event selection based on tracks displaced from the $p\overline{p}$ interaction point.