First observation of the Sigma(*+)(c) baryon and a new measurement of the Sigma(*+)(c) mass
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Issue Date
2001-02Author
Ammar, Raymond G.
Bean, Alice
Besson, David Zeke
Davis, Robin E. P.
Kwak, Nowhan
Zhao, X.
Publisher
AMERICAN PHYSICAL SOC
Type
Article
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Show full item recordAbstract
Using data recorded with the CLEO II and CLEO ILV 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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Citation
Ammar, R, Bean, A, et al. First observation of the Sigma(*+)(c) baryon and a new measurement of the Sigma(*+)(c) mass. PHYSICAL REVIEW LETTERS. February 2001. 86(7) : 1167-1170
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