Measurement of b-Baryons with the CDF II detector

Abstract

We report the observation of new bottom baryon states. The most recent result is the observation of the baryon Ξ_b^- through the decay Ξ_b^- to J/ψΞ^-. The significance of the signal corresponds to 7.7 sigma and the Ξ_b^- mass is measured to be 5792.9 \pm 2.5(stat.) \pm 1.7(syst.) MeV/c^2. In addition we observe four resonances in the Λ_b^0 π^{\pm} spectra, consistent with the bottom baryons Σ_b^{(*)\pm}. All observations are in agreement with theoretical expectations.

3 pages, 3 figures, conference proceedings to the 2007 Europhysics Conference on High Energy Physics (Manchester, July 2007)

References in corpus (2)

• Direct observation of the strange b baryon Xi_b^{-}
• Observation and Mass Measurement of the Baryon ${\Xi }_b^{-}$