First Observation of Bottom Baryon Sigma_b States at CDF

Abstract

We present the latest results on the search of bottom baryon states Sigma_b using 1 fb^-1 of CDF data. The study is performed with the world's largest sample of fully reconstructed Lambda_b decays collected by CDF II detector at the collision energy of 1.96 TeV in the hadronic trigger path. We observe 4 new states consistent with Sigma_b(*)+/- bottom baryons.

8 pages, 6 figures, 3 tables; Proceedings of a talk at the Second Meeting of the APS Topical Group on Hadronic Physics (GHP 2006), 22-24 Oct 2006, Nashville, TN; to be published in Journal of Physics: Conference Series

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