Observation of the Omega_c Charmed Baryon at CLEO

Details Observation of the Omega_c Charmed Baryon at CLEO Observation of the Omega_c Charmed Baryon at CLEO

2000-07-24

arxiv.org/abs/hep-ex/0007047v2

Int.J.Mod.Phys.A16S1B:505-507,2001

Physics

High Energy Physics

High Energy Physics - Experiment

Submitted to XXXth International Conference on High Energy Physics, July 2000, Osaka, Japan

Scientific paper

The CLEO detector at the CESR collider has used 13.7 fb^{-1} to search for the production of Omega_c (css-ground state) in e^{+}e^{-} collisions at sqrt{s} = 10.6 GeV The modes used to study the Omega_c are Omega- pi+, Omega- pi+ pi0, Xi- K- pi+ pi+, Xi0 K- pi+, and Omega- pi+ pi+ pi-. We observe 40.4 +- 9.0(stat) combined events at a mass of 2694.6 +- 2.6(stat) +- 2.4(syst) MeV. We have also measured the \sigma * Br of the above modes for xp > 0.5 to be 11.3 +- 3.9 +- 2.3 fb, 47.6 +- 18.0 +- 2.8 fb, 45.1 +- 23.2 +- 4.1 fb, 18.2 +- 10.6 +- 3.8 fb, and <5.1 fb @ 90 % CL, respectively.

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