Measurement Of The Lambda(0)(B) Lifetime In Lambda(0)(B)-> J/Psi Lambda(0) In P(P)Over-Bar Collisions At Root S=1.96 Tev
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Yu,S. S. Yu,J. C. Yun,L. Zanello,A. Zanetti,I. Zaw,X. Zhang,J. Zhou,S. Zucchelli
PHYSICAL REVIEW LETTERS（2007）
Cited 38|Views296
Abstract
We report a measurement of the Lambda(0)(b) lifetime in the exclusive decay Lambda(0)(b)-> J/psi Lambda(0) in p (p) over bar collisions at root s=1.96 TeV using an integrated luminosity of 1.0 fb(-1) of data collected by the CDF II detector at the Fermilab Tevatron. Using fully reconstructed decays, we measure tau(Lambda(0)(b))=1.593(-0.078)(+0.083)(stat)+/- 0.033(syst) ps. This is the single most precise measurement of tau(Lambda(0)(b)) and is 3.2 sigma higher than the current world average.
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