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Measurement of the Lambda(0)(b) lifetime using semileptonic decays
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2007 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 99, no 18, 182001-1-182001-7 p.Article in journal (Refereed) Published
Abstract [en]

We report a measurement of the Lambda(0)(b) lifetime using a sample corresponding to 1.3 fb(-1) of data collected by the D0 experiment in 2002-2006 during run II of the Fermilab Tevatron collider. The Lambda(0)(b) baryon is reconstructed via the decay Lambda(0)(b)->mu(nu) over bar Lambda X-+(c). Using 4437 +/- 329 signal candidates, we measure the Lambda(0)(b) lifetime to be tau(Lambda(0)(b))=1.290(-0.110)(+0.119)(stat)(-0.091)(+0.087)(syst) ps, which is among the most precise measurements in semileptonic Lambda(0)(b) decays. This result is in good agreement with the world average value.

Place, publisher, year, edition, pages
2007. Vol. 99, no 18, 182001-1-182001-7 p.
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Subatomic Physics
URN: urn:nbn:se:kth:diva-35472DOI: 10.1103/PhysRevLett.99.182001ISI: 000250644000014OAI: diva2:428745
QC 20110701Available from: 2011-07-01 Created: 2011-07-01 Last updated: 2011-07-01Bibliographically approved

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Clément, ChristopheGollub, NilsHansson, PerStrandberg, Jonas
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Particle and Astroparticle Physics
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