Colour-octet Contributions to J/psi Hadroproduction at Fixed Target Energies

Details Colour-octet Contributions to J/psi Hadroproduction at Fixed Target Energies Colour-octet Contributions to J/psi Hadroproduction at Fixed Target Energies

1996-01-28

arxiv.org/abs/hep-ph/9601349v2

Phys.Rev. D54 (1996) 5545-5547

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages vanilla LaTeX including one figure. Errors in eqs 3, 6, 8 corrected and other minor changes

Scientific paper

10.1103/PhysRevD.54.5545

We investigate the integrated cross section for forward $\jpsi$ production in proton-proton and pion-proton collisions at centre of mass energies upto 60 GeV. We find that colour-octet contributions to the cross section are crucially important, and their inclusion produces a very good description of the data. Since the values of non-perturbative matrix elements are fixed by other experiments, these predictions are parameter-free.

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