
We present the gluon-gluon and photon-gluon helicity amplitudes for color singlet and octet charmonium production in polarized and unpolarized hadron-hadron and photon-hadron collisions.
11 pages amstex no figures
High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), Experimental High Energy Physics, FOS: Physical sciences
High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), Experimental High Energy Physics, FOS: Physical sciences
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