J/{psi} Production with NRQCD: HERA, Tevatron, RHIC and LHC

Journal Article · Mon May 23 04:00:00 EDT 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3575045· OSTI ID:21516893

Butenschoen, Mathias; Kniehl, Bernd A ^[1]

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1. II. Institut fuer Theoretische Physik, Universitaet Hamburg, Luruper Chaussee 149, 22761 Hamburg (Germany)

We report on our recent calculation of the inclusive direct photo- and hadroproduction of the J/{psi} meson at next-to-leading order within the factorization formalism of nonrelativistic QCD. We fit the color-octet (CO) long-distance matrix elements <O{sup J}/{psi}(1S{sub 0}{sup [8]})>, <O{sup J}/{psi}(3S{sub 1}{sup [8]})> and <O{sup J}/{psi}(3P{sub 0}{sup [8]})> to the transverse momentum (p{sub T}) distributions measured by CDF at Fermilab Tevatron and by H1 at DESY HERA and show that they also successfully describe the p{sub T} distributions from PHENIX at BNL RHIC and CMS at the CERN LHC as well as the photon-proton c.m. energy and (with worse agreement) the inelasticity distributions from H1. In all experiments, the CO processes are shown to be indispensable.

• OSTI ID: 21516893
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1343; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

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