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Measurement of the masses and widths of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msubsup><mml:mrow><mml:mi>Σ</mml:mi></mml:mrow><mml:mrow><mml:mi>c</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo><mml:mo>+</mml:mo></mml:mrow></mml:msubsup></mml:mrow></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msubsup><mml:mrow><mml:mi>Σ</mml:mi></mml:mrow><mml:mrow><mml:mi>c</mml:mi></mml:mrow><mml:mrow…
Using data recorded by the CLEO II and CLEO II.V detector configurations at CESR, we report new measurements of the masses of the Σ++c and Σ0c charmed baryons, and the first measurements of their intrinsic widths. We find M(Σ++c)−M(Λ+c)=167.4±0.1±0.2MeV, Γ(Σ++c)=2.3±0.2±0.3MeV, and M(Σ0c)−M(Λ+c)=167.2±0.1±0.2MeV,Γ(Σ0c)=2.5±0.2±0.3MeV, where the uncertainties are statistical and systematic, respectively.Received …