Observation Of Lambda(B)(0)->J/Psi Lambda At The Fermilab Proton-Antiproton Collider
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Zanetti,F. Zetti, L. Zhang,W. Zhang,S. Zucchelli
PHYSICAL REVIEW D（1997）
Cited 65|Views343
Abstract
The decay Lambda(b)(0) --> J/psi Lambda is observed in 110 pb(-1) of p (p) over bar collisions taken at root s = 1.8 TeV. These data are used to measure a Lambda(b)(0) mass of 5621+/-4(stat)+/-3(syst) MeV/c(2), and a mass difference between the Lambda(b)(0) and the B-0 of 340+/-5(stat)+/-1(syst) MeV/c(2). The production cross-section times branching fraction for the decay Lambda(b)(0) --> J/psi Lambda relative to that for the decay B-0 --> J/psi K-S(0) has been measured to be 0.27+/-0.12(stat)+/-0.05(syst).
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