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Measurement of J/Ψ production in pp collisions at √s=7 TeV

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The production of J/ψ mesons in proton–proton collisions at s√=7\ensuremath TeV is studied with the LHCb detector at the LHC. The differential cross-section for prompt J/ψ production is measured as a function of the J/ψ transverse momentum pT and rapidity y in the fiducial region \ensuremathpT∈[0;14...

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Main Authors: Aaij, Roel (Author) , Bachmann, Sebastian (Author) , Deissenroth, Marc (Author) , Eisele, Franz (Author) , Färber, Christian (Author) , Hansmann-Menzemer, Stephanie (Author) , Holubyev, Kostya (Author) , Krocker, Georg Alexander (Author) , Linn, Christian (Author) , Marks, Jörg (Author) , Meißner, Marco (Author) , Uwer, Ulrich (Author) , Wandernoth, Sebastian (Author) , Wiedner, Dirk (Author) , Zhelezov, Alexey (Author)
Corporate Author: LHCb Collaboration (Author)
Format: Article (Journal)
Language:English
Published: 19 May 2011
In: The European physical journal. C, Particles and fields
Year: 2011, Volume: 71, Issue: 5, Pages: 1-17
ISSN:1434-6052
DOI:10.1140/epjc/s10052-011-1645-y
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1140/epjc/s10052-011-1645-y
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Author Notes:The LHCb Collaboration*
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Summary:The production of J/ψ mesons in proton–proton collisions at s√=7\ensuremath TeV is studied with the LHCb detector at the LHC. The differential cross-section for prompt J/ψ production is measured as a function of the J/ψ transverse momentum pT and rapidity y in the fiducial region \ensuremathpT∈[0;14]\ensuremath GeV/c and y∈[2.0;4.5]. The differential cross-section and fraction of J/ψ from b-hadron decays are also measured in the same pT and y ranges. The analysis is based on a data sample corresponding to an integrated luminosity of 5.2 pb−1. The measured cross-sections integrated over the fiducial region are ${\ensuremath{J\hspace{-1.5pt}/\hspace{-0.45pt}\psi}}$production and for $J\hspace{-1.5pt}/\hspace{-0.45pt}\psi$from b-hadron decays, where the first uncertainty is statistical and the second systematic. The prompt ${\ensuremath{J\hspace{-1.5pt}/\hspace{-0.45pt}\psi}}$production cross-section is obtained assuming no J/ψ polarisation and the third error indicates the acceptance uncertainty due to this assumption.
Item Description:Im Titel steht der Buchstabe s unter dem Wurzelsymbol
*The LHCb Collaboration: R. Aaij, S. Bachmann, M. Deissenroth, F. Eisele, C. Färber, S. Hansmann-Menzemer, K. Holubyev, G. Krocker, C. Linn, J. Marks, M. Meissner, U. Uwer, S. Wandernoth, D. Wiedner, A. Zhelezov [und sehr viele weitere Personen]
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Physical Description:Online Resource
ISSN:1434-6052
DOI:10.1140/epjc/s10052-011-1645-y

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