Diffractive rho-meson Leptoproduction on Polarized Nucleon as a Way to Measure the Polarized Gluon Distribution
Abstract
The amplitude of diffractive (and open quark) leptoproduction on a polarized target is calculated in the leading log approximation of pQCD using the hadron-parton duality hypothesis. The spin-spin asymmetry is expressed in terms of the spin dependent gluon and quark structure functions in the small x region. Therefore the γ*+p +p reaction provides a promising tool to study the spin dependent gluon distribution G(x,q2).
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