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Measurement of the relative rate of prompt χ[subscript c0], χ[subscript c1] and χ[subscript c2] production at √s =7 TeV

Author(s)
Williams, Michael
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Alternative title
Measurement of the relative rate of prompt χc0, χc1 and χc2 production at √s=7 TeV
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Creative Commons Attribution 4.0 International License http://creativecommons.org/licenses/by/4.0/
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Abstract
Prompt production of charmonium χ[subscript c0], χ[subscript c1] and χ[subscript c2] mesons is studied using proton-proton collisions at the LHC at a centre-of-mass energy of √s = 7 TeV. The χ[subscript c] mesons are identified through their decay to J/ψγ, with J/ψ → μ[superscript +]μ[superscript −] using photons that converted in the detector. A data sample, corresponding to an integrated luminosity of 1.0 fb[superscript −1] collected by the LHCb detector, is used to measure the relative prompt production rate of χ[subscript c1] and χ[subscript c2] in the rapidity range 2.0 < y < 4.5 as a function of the J/ψ transverse momentum from 3 to 20 GeV/c. First evidence for χ[subscript c0] meson production at a high-energy hadron collider is also presented.
Date issued
2013-10
URI
http://hdl.handle.net/1721.1/109098
Department
Massachusetts Institute of Technology. Department of Physics
Journal
Journal of High Energy Physics
Publisher
Springer-Verlag/SISSA
Citation
The LHCb collaboration et al. “Measurement of the Relative Rate of Prompt χ[subscript c0], χ[subscript c1] and χ[subscript c2] Production at √s =7 TeV.” Journal of High Energy Physics 2013.10 (2013): n. pag. © 2013 CERN for the benefit of the LHCb collaboration
Version: Final published version
ISSN
1029-8479

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