Precision measurement of the Λb0 baryon lifetime

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dc.contributor.authorWhitehead M.
dc.contributor.authorWicht J.
dc.contributor.authorWiechczynski J.
dc.contributor.authorWiedner D.
dc.contributor.authorWiggers L.
dc.contributor.authorWilkinson G.
dc.contributor.authorWilliams M.P.
dc.contributor.authorWilliams M.
dc.contributor.authorWilson F.F.
dc.contributor.authorWimberley J.
dc.contributor.authorWishahi J.
dc.contributor.authorWislicki W.
dc.contributor.authorWitek M.
dc.contributor.authorWormser G.
dc.contributor.authorWotton S.A.
dc.contributor.authorWright S.
dc.contributor.authorWu S.
dc.contributor.authorWyllie K.
dc.contributor.authorXie Y.
dc.contributor.authorXing Z.
dc.contributor.authorYang Z.
dc.contributor.authorYuan X.
dc.contributor.authorYushchenko O.
dc.contributor.authorZangoli M.
dc.contributor.authorZavertyaev M.
dc.contributor.authorZhang F.
dc.contributor.authorZhang L.
dc.contributor.authorZhang W.C.
dc.contributor.authorZhang Y.
dc.contributor.authorZhelezov A.
dc.contributor.authorZhokhov A.
dc.contributor.authorZhong L.
dc.contributor.authorZvyagin A.
dc.date.accessioned2025-04-10T11:13:54Z
dc.date.available2025-04-10T11:13:54Z
dc.date.issued2013
dc.description.abstractThe ratio of the Λb0 baryon lifetime to that of the B ̄0 meson is measured using 1.0 fb-1 of integrated luminosity in 7 TeV center-of-mass energy pp collisions at the LHC. The Λb0 baryon is observed for the first time in the decay mode Λb0→J/ψpK-, while the B̄0 meson decay used is the well known B̄0→J/ψπ+K - mode, where the π+K- mass is consistent with that of the K̄*0(892) meson. The ratio of lifetimes is measured to be 0.976±0.012±0.006, in agreement with theoretical expectations based on the heavy quark expansion. Using previous determinations of the B̄0 meson lifetime, the Λb0 lifetime is found to be 1.482±0.018±0.012 ps. In both cases, the first uncertainty is statistical and the second systematic. © 2013 CERN, for the LHCb Collaboration Published by the American Physical Society under the terms of the http://creativecommons.org/licenses/by/3.0/ Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
dc.identifier.DOI-ID10.1103/PhysRevLett.111.102003
dc.identifier.urihttp://hdl.handle.net/20.500.14701/50012
dc.titlePrecision measurement of the Λb0 baryon lifetime
dc.typeArticle

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