Measurement of the ratio of prompt χc to J/ψ production in pp collisions at √s=7 TeV


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CERN-LHC. Measurement of the ratio of cross sections for prompt charmonium Chi_c to J/psi production in proton-proton interactions at a centre-of-mass energy of 7 TeV. The Chi_c mesons, from a data sample of integrated luminosity of 36 pb-1 collected during 2010, are indentified through their decay Chi_c -> J/psi -> mu^+ mu^- gamma covering the J/psi transverse momentum range 2-15 GeV and rapidity 2.0-4.5.
Date made available4 Jan 2012

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