Quarkonium Polarization in Non-relativistic QCD and the Quark-Gluon Plasma

Details Quarkonium Polarization in Non-relativistic QCD and the Quark-Gluon Plasma Quarkonium Polarization in Non-relativistic QCD and the Quark-Gluon Plasma

1998-01-08

arxiv.org/abs/hep-ph/9801240v1

Phys.Rev. D58 (1998) 034006

Physics

High Energy Physics

High Energy Physics - Phenomenology

20 pages including 3 eps figures, LaTeX source

Scientific paper

10.1103/PhysRevD.58.034006

We examine angular distributions of leptons arising from the decay of J/psi in inclusive hadroproduction. Taking into account feed-down contributions from chi_{1,2}, a flat distribution emerges without fine tuning parameters. Changes in the ratio of direct to total J/psi cross sections would change this distribution significantly. Such angular distributions are, therefore, confirmatory tests of the J/psi suppression signal for the production of a quark-gluon plasma. Related effects are predicted for the Upsilon.

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