Abstract
Processes involving direct J/ψ-meson production in proton-antiproton and proton-proton collisions are studied under the assumption of gluon Reggeization in t-channel exchanges and with the aid of the formalism of nonrelativistic quantum chromodynamics. The present calculations are performed in the leading approximation in the strong coupling constant α s and in the relative quark velocity v. The octet nonperturbative matrix elements for the transition of a c \(\bar c\) pair to quarkonium are fixed in fitting the transverse-momentumspectra obtained by the CDF Collaboration for J/ψ mesons at the Tevatron collider. The spectra of J/ψ-meson production at the energies of the Large Hadron Collider are predicted, and the resulting predictions agree well with experimental data obtained by the ATLAS, CMS, and LHCb Collaborations at \(\sqrt S \) = 7 TeV.
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Original Russian Text © M.A. Nefedov, V.A. Saleev, A.V. Shipilova, 2013, published in Yadernaya Fizika, 2013, Vol. 76, No. 12, pp. 1615–1622.
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Nefedov, M.A., Saleev, V.A. & Shipilova, A.V. Charmonium production at the Tevatron and Large Hadron Collider in the Regge limit of QCD. Phys. Atom. Nuclei 76, 1546–1553 (2013). https://doi.org/10.1134/S1063778813110124
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DOI: https://doi.org/10.1134/S1063778813110124