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Gluon dissociation of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>J</mml:mi><mml:mo>/</mml:mo><mml:mi>ψ</mml:mi></mml:mrow></mml:math>beyond the dipole approximation
Using a nonrelativistic potential model, we calculate the cross section for the leading-order gluon dissociation of $J/\ensuremath{\psi}$ by including the full gluon wave function. We find that the resulting cross section as a function of gluon energy is reduced by about a factor of three at its maximum value compared …