Charmonia production in hadron colliders and the extraction of colour-octet matrix elements

Details Charmonia production in hadron colliders and the extraction of colour-octet matrix elements Charmonia production in hadron colliders and the extraction of colour-octet matrix elements

1997-06-06

arxiv.org/abs/hep-ph/9706270v1

Nucl.Phys. B508 (1997) 753-767

Physics

High Energy Physics

High Energy Physics - Phenomenology

17 pages, LaTex, 5 Figures included in the text

Scientific paper

10.1016/S0550-3213(97)00660-3

We present the results of our analysis on charmonia ($J/\psi$ and $\psi'$) hadroproduction taking into account higher-order QCD effects induced by initial-state radiation in a Monte Carlo framework, with the colour-octet mechanism implemented in the event generation. We find that those colour-octet matrix elements extracted so far from Fermilab Tevatron data for both $J/\psi$ and $\psi'$ production have to be lowered significantly. We finally make predictions for charmonia production at the LHC, presenting a code for a fast simulation with PYTHIA based on the colour-octet model.

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