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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
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2012 (English)In: Physical Review D, ISSN 1550-7998, E-ISSN 1550-2368, Vol. 85, no 11, 112003- p.Article in journal (Refereed) Published
Abstract [en]

We measure the Lambda(0)(b) lifetime in the fully reconstructed decay Lambda(0)(b) -> J/psi Lambda(0) using 10.4 fb(-1) of p (p) over bar collisions collected with the D0 detector at root s = 1.96 TeV. The lifetime of the topologically similar decay channel B-0 -> J/psi K-S(0) is also measured. We obtain tau(Lambda(0)(b)) = 1.303 +/- 0.075(stat) +/- 0.035(syst) ps and tau(B-0) = 1.508 +/- 0.025(stat) +/- 0.043(syst) ps. Using these measurements, we determine the lifetime ratio of tau(Lambda(0)(b))/tau(B-0) = 0.864 +/- 0.052(stat) +/- 0.033(syst).

Place, publisher, year, edition, pages
2012. Vol. 85, no 11, 112003- p.
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Physical Sciences
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URN: urn:nbn:se:uu:diva-178653DOI: 10.1103/PhysRevD.85.112003ISI: 000304939400001OAI: oai:DiVA.org:uu-178653DiVA: diva2:542645
Available from: 2012-08-02 Created: 2012-08-01 Last updated: 2017-12-07Bibliographically approved

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Buszello, Claus P.

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