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Observation of the decay Omega(0)(c)->Omega(-)e(+)nu(e)
Ammar, Raymond G. Besson, David Zeke Zhao, X.
Ammar, Raymond G.
Besson, David Zeke
Zhao, X.
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Abstract
Using the CLEO detector at the Cornell Electron Storage Ring we have observed the Omega(c)(0) (css ground state) in the decay Omega(c)(0) --> Omega(-)e(+)nu(e). We find a signal of 11.4 +/- 3.8(stat) events. The probability that we have observed a background fluctuation is 7.6x10(-5). We measure B(Omega(c)(0) --> Omega(-)e(+)nu(e)).sigma(e(+)e(-) --> Omega(c)(0)X) = (42.2 +/- 14.1(stat) +/- 5.7(syst)) fb and R = Gamma(Omega(c)(0)Omega(-)--> pi(+))/Gamma(Omega(c)(0) --> Omega(-)enu(e)) = 00.41 +/- 0.19(stat) +/- 0.04(syst). This is the first statistically significant observation of an individual decay mode of the Omega(c)(0) in e(+)e(-) annihilation and the first example of a baryon decaying via beta emission, where no quarks from the first generation participate in the reaction.
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2002-10
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AMERICAN PHYSICAL SOC
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Ammar, R, Besson, D, et al. Observation of the decay Omega(0)(c)->Omega(-)e(+)nu(e). AMERICAN PHYSICAL SOC. October 2002. 89(17)