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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, E-ISSN 1079-7114, 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.
Keyword [en]
INCLUSIVE DECAYS, BEAUTY HADRONS, DETECTOR, PHYSICS
National Category
Subatomic Physics
Identifiers
URN: urn:nbn:se:kth:diva-35472DOI: 10.1103/PhysRevLett.99.182001ISI: 000250644000014OAI: oai:DiVA.org:kth-35472DiVA: diva2:428745
Note
QC 20110701Available from: 2011-07-01 Created: 2011-07-01 Last updated: 2017-12-11Bibliographically approved

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Strandberg, Jonas

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