Measurement of b-Baryons with the CDF II detector

Details Measurement of b-Baryons with the CDF II detector Measurement of b-Baryons with the CDF II detector

2007-10-02

arxiv.org/abs/0710.0656v1

J.Phys.Conf.Ser.110:052022,2008

Physics

High Energy Physics

High Energy Physics - Experiment

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

Scientific paper

10.1088/1742-6596/110/5/052022

We report the observation of new bottom baryon states. The most recent result is the observation of the baryon \Xi_b^- through the decay \Xi_b^- to J/\psi \Xi^-. The significance of the signal corresponds to 7.7 sigma and the \Xi_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 \Lambda_b^0 \pi^{\pm} spectra, consistent with the bottom baryons \Sigma_b^{(*)\pm}. All observations are in agreement with theoretical expectations.

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