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Evidence of new states decaying into Xi(*)(c)pi
Ammar, Raymond G. Baringer, Philip S. Bean, Alice Besson, David Zeke Coppage, Don Davis, Robin E. P. Kotov, S. Kravchenko, I. Kwak, Nowhan Zhou, X.
Ammar, Raymond G.
Baringer, Philip S.
Bean, Alice
Besson, David Zeke
Coppage, Don
Davis, Robin E. P.
Kotov, S.
Kravchenko, I.
Kwak, Nowhan
Zhou, X.
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Abstract
Using data recorded by the CLEO II detector at the Cornell Electron Storage Ring, we report evidence for two new charmed baryons, one decaying into Xi(c)(+) pi(+) pi(-) via an a intermediate Xi(c)(*o) and its isospin partner decaying into Xi(c)(o)pi(+)pi(-) via an intermediate Xi(c)(*+). We measure the mass differences of the two states to be M(Xi(c)(+)pi(+)pi(-)) - M(Xi(c)(+)) = 348.6 +/- 0.6 +/- 1.0 MeV, and M(Xi(c)(o)pi(+)pi(-)) - M(Xi(c)(o)) = 347.2 +/- 0.7 +/- 2.0 MeV. We interpret these new sates as the J(P) = 3(-)/2 Xi(cl) particles, the charmed-strange analogs of the Lambda(cl)(+)(2625).
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1999-10
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AMERICAN PHYSICAL SOC
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p3390_1.pdf
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Alexander, JP, Baker, R, et al. Evidence of new states decaying into Xi(*)(c)pi. AMERICAN PHYSICAL SOC. October 1999. 83(17) : 3390-3393