Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/99322
Title: Measurement of J/ψ production in pp collisions at √s = 7 TeV
Author: LHCb Collaboration
Keywords: Hadrons
Teoria quàntica de camps
Gravitació
Teoria quàntica
Relativitat (Física)
Hadrons
Quantum field theory
Gravitation
Quantum theory
Relativity (Physics)
Issue Date: 19-May-2011
Publisher: Società Italiana di Fisica & Springer Verlag
Abstract: The production of J/ψ mesons in proton–proton collisions at √s = 7 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 pT ∈ [0; 14] 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 10.52 ± 0.04 ± 1.40+1.64 −2.20 µb for prompt J/ψ production and 1.14 ± 0.01 ± 0.16 µb for J/ψ from b-hadron decays, where the first uncertainty is statistical and the second systematic. The prompt J/ψ production cross-section is obtained assuming no J/ψ polarisation and the third error indicates the acceptance uncertainty due to this assumption.
Note: Reproducció del document publicat a: http://dx.doi.org/10.1140/epjc/s10052-011-1645-y
It is part of: European Physical Journal C, 2011, vol. 71, p. 1645
Related resource: http://dx.doi.org/10.1140/epjc/s10052-011-1645-y
URI: http://hdl.handle.net/2445/99322
ISSN: 1434-6044
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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