J/psi production with NRQCD: HERA, Tevatron, RHIC and LHC

Details J/psi production with NRQCD: HERA, Tevatron, RHIC and LHC J/psi production with NRQCD: HERA, Tevatron, RHIC and LHC

2010-11-25

arxiv.org/abs/1011.5619v1

AIP Conf.Proc.1343:409-411,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

3 pages, 2 figures, to appear in the proceedings of "The IX International Conference on Quark Confinement and the Hadron Spect

Scientific paper

10.1063/1.3575045

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 , and to the transverse momentum (p_T) distributions measured by CDF at Fermilab Tevatron and by H1 at DESY HERA and show that they also successfully describe the p_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.

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