Measurement of $\Sigma_b$ Baryons with CDF II Detector

ORAL

Abstract

In 2006 CDF Collaboration reported a first observation of bottom baryon states $\Sigma_{b}$. Based on $\sim$~5.0~fb$^{-1}$ of CDF data we present a high statistics measurements of strongly decaying b-baryons based on a data sample of fully reconstructed $\Lambda_{b}$ decays collected by CDF~II detector at $\sqrt{s} = 1.96$~TeV in several trigger paths. The confirmation of the discovery and the first independent mass and widths measurements of all four states $\Sigma_{b}^{(*)+}$ and $\Sigma_{b}^{(*)-}$ will be presented.

Authors

  • Constantino Calancha-Paredes

    CIEMAT-Madrid60510

  • Juan Pablo Fernandez

    CIEMAT-Madrid60510

  • Igor Gorelov

    University of New Mexico

  • Luis Labarga

    UAM-Madrid28049