This title appears in the Scientific Report : 2012 

Prompt J/Psi production in the Regge limit of QCD: From the Tevatron to the LHC
Saleev, V.A.
Nefedov, M.A. / Shipilova, A.V.
Experimentelle Hadrondynamik; IKP-2
Physical Review D Physical review / D, 85 85 (2012 2012) 7 7, S. 074013 074013
[S.l.] Soc. 2012
2012-04-10
2012-04-01
074013
10.1103/PhysRevD.85.074013
Journal Article
Physik der Hadronen und Kerne
Physical Review D 85
7
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Please use the identifier: http://hdl.handle.net/2128/10252 in citations.
Please use the identifier: http://dx.doi.org/10.1103/PhysRevD.85.074013 in citations.
We study prompt J/psi-meson hadroproduction invoking the hypothesis of gluon Reggeization in t-channel exchanges at high energy and the factorization formalism of nonrelativistic quantum chromodynamics at the leading order in the strong-coupling constant alpha(s) and the relative velocity of quarks upsilon. The transverse-momentum distribution of direct and prompt J/psi-meson production measured at the Fermilab Tevatron fitted to obtain the nonperturbative long-distance matrix elements, which are used to predict prompt J/psi production spectra at the CERN LHC. At the numerical calculation, we adopt the Kimber-Martin-Ryskin and Blumlein prescriptions to derive unintegrated gluon distribution function of the proton from their collinear counterpart, for which we use the Martin-Roberts-Stirling-Thorne set. Without adjusting any free parameters, we find good agreement with measurements by the ATLAS, CMS and LHCb Collaborations at the LHC at the hadronic c.m. energy root S = 7 TeV.