Large - Distance Effects in QCD and Spin Asymmetries in Diffractive Reactions
S. V. Goloskokov
Abstract
Large - distance effects in the hadron wave function for the hadron-Pomeron vertex in the QCD -model are discussed. It is shown that they lead to the spin-flip part of the Pomeron coupling which can reach 10 ÷20 % with respect to the non-flip part. The obtained structure of the Pomeron coupling modifies spin asymmetries in high--energy diffractive reactions where the Pomeron structure becomes determinative. We study spin asymmetries in exclusive reactions and in the diffractive Q Q and J/Ψ production. We have found that spin effects in these diffractive processes are sensitive to the spin-flip part of the Pomeron coupling.
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