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January 2008, to be published in Physical Review D1
Helicity amplitudes for charmonium production in hadron-hadron and photon-hadron
collisions
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. © 2008 The American Physical Society.
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