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dc.contributor.authorCMS Collaboration
Adair, A.
Boulahouache, C.
Cuplov, V.
Ecklund, K.M.
Geurts, F.J.M.
Padley, B.P.
Redjimi, R.
Roberts, J.
Zabel, J. 2015-07-13T14:59:41Z 2015-07-13T14:59:41Z 2012
dc.identifier.citation CMS Collaboration, Adair, A., Boulahouache, C., et al.. "Measurement of the Λb cross section and the Λ¯b to Λb ratio with J/ψΛ decays in pp collisions at √s=7 TeV." Physics Letters B, 714, no. 2-5 (2012) 136-157.
dc.description.abstract The Λb differential production cross section and the cross section ratio σ(Λ¯b)/σ(Λb) are measured as functions of transverse momentum pTΛb and rapidity |yΛb| in pp collisions at √s=7 TeV using data collected by the CMS experiment at the LHC. The measurements are based on Λb decays reconstructed in the exclusive final state J/ψΛ, with the subsequent decays J/ψ→μ+μ− and Λ→pπ, using a data sample corresponding to an integrated luminosity of 1.9 fb−1. The product σ(Λb)×B(Λb→J/ψΛ) versus pTΛb falls faster than that of b mesons. The measured value of σ(Λb)×B(Λb→J/ψΛ) for pTΛb>10 GeV and |yΛb|<2.0 is 1.16±0.06±0.12 nb, and the integrated σ(Λ¯b)/σ(Λb) ratio is 1.02±0.07±0.09, where the uncertainties are statistical and systematic, respectively.
dc.language.iso eng
dc.rights Open access under CC BY-NC-ND license
dc.title Measurement of the Λb cross section and the Λ¯b to Λb ratio with J/ψΛ decays in pp collisions at √s=7 TeV
dc.type Journal article
dc.citation.journalTitle Physics Letters B
B physics
dc.citation.volumeNumber 714
dc.citation.issueNumber 2-5
dc.contributor.publisher Elsevier
dc.type.dcmi Text
dc.type.publication publisher version
dc.citation.firstpage 136
dc.citation.lastpage 157

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