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First observation of the Sigma(*+)(c) baryon and a new measurement of the Sigma(*+)(c) mass
Ammar, Raymond G. Bean, Alice Besson, David Zeke Davis, Robin E. P. Kwak, Nowhan Zhao, X.
Ammar, Raymond G.
Bean, Alice
Besson, David Zeke
Davis, Robin E. P.
Kwak, Nowhan
Zhao, X.
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Abstract
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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2001-02
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AMERICAN PHYSICAL SOC
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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