Different Nuclear Dependence of J/ψ and ψ′ Production in p-A and A-p Collisions

الأصل · EN

While presently available p-A data observe that the nuclear dependence of J/ψ and ψ′ production is the same within errors, we show that different nuclear dependence of J/ψ and ψ′ production in the kinematic region uncovered by the present p-A data can be predicted based on two different nuclear absorption scenarios. It is found that the predicted production ratio σ(ψ′)/σ(J/ψ) at positive xF in A-p collisions is mainly determined by nuclear absorption, and hence allows direct experimental test of nuclear absorption scenarios.