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Article
Report number arXiv:1103.0423 ; LHCb-PAPER-2011-003 ; CERN-PH-EP-2011-018 ; CERN-PH-EP-2011-018 ; LHCb-PAPER-2011-003
Title Measurement of J/ψ production in pp collisions at s = 7 TeV
Author(s) LHCb Collaboration  544 人のオーサーを表示
Affiliation (CERN)
Publication 2011
Imprint 03 Mar 2011
Number of pages 24
Note Comments: 5+24 pages, 9 figures
In: Eur. Phys. J. C 71 (2011) 1645
DOI 10.1140/epjc/s10052-011-1645-y
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; LHCb
Abstract The production of J/psi mesons in proton-proton collisions at sqrt(s)=7 TeV is studied with the LHCb detector at the LHC. The differential cross-section for prompt J/psi production is measured as a function of the J/psi transverse momentum pT and rapidity y in the fiducial region 0<pT<14 GeV/c and 2.0<y<4.5. The differential cross-section and fraction of J/psi 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 5.2pb-1. The measured cross-sections integrated over the fiducial region are 10.52 +/- 0.04 +/- 1.40 +1.64/-2.20 mub for prompt J/psi production and 1.14 +/- 0.01 +/- 0.16 mub for J/psi from b-hadron decays, where the first uncertainty is statistical and the second systematic. The prompt J/psi production cross-section is obtained assuming no J/psi polarisation and the third error indicates the acceptance uncertainty due to this assumption.
Copyright/License publication: © 2011-2025 CERN (License: CC-BY-3.0)
preprint: © 2011-2025 CERN (License: CC-BY-3.0)



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Email contact: roger.forty@cern.ch


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