First observation of the sigma(*+)(c) baryon and a new measurement of the sigma(*+)(c) mass.

First observation of the sigma(*+)(c) baryon and a new measurement of the sigma(*+)(c) mass.

Using data recorded with the CLEO II and CLEO II.V detector configurations at the Cornell Electron Storage Rings, we report the first observation and mass measurement of the Sigma(*+)(c) charmed baryon, and an updated measurement of the mass of the Sigma(+)(c) baryon. We find M(Sigma(*+)(c))-M(Lambd...

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Prif Awduron: Ammar, R, Bean, A, Besson, D, Davis, R, Kwak, N, Zhao, X, Anderson, S, Frolov, V, Kubota, Y, Lee, S, Mahapatra, R, O'Neill, J, Poling, R, Riehle, T, Smith, A, Stepaniak, C, Urheim, J, Ahmed, S, Alam, MS, Athar, S, Jian, L, Ling, L, Saleem, M, Timm, S, Wappler, F
Fformat: Journal article
Iaith:English
Cyhoeddwyd: 2001
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Crynodeb:Using data recorded with the CLEO II and CLEO II.V detector configurations at the Cornell Electron Storage Rings, we report the first observation and mass measurement of the Sigma(*+)(c) charmed baryon, and an updated measurement of the mass of the Sigma(+)(c) baryon. We find M(Sigma(*+)(c))-M(Lambda(+)(c)) = (231.0+/-1.1+/-2.0) MeV, and M(Sigma(+)(c))-M(Lambda(+)(c)) = (166.4+/-0.2+/-0.3) MeV, where the errors are statistical and systematic, respectively.

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