Gluon radiation in diffractive electroproduction Original Research Article

Order αs corrections to the diffractive structure functions FLD and F2D at large Q2 and small x are evaluated in the semiclassical approach, where the initial proton is treated as a classical color field. The diffractive final state contains a fast gluon in addition to a quark-antiquark pair. Two of these partons may have large transverse momentum. Our calculations lead to an intuitive picture of deep inelastic diffractive processes which is very similar to Bjorkenʹs aligned-jet model. Both diffractive structure functions contain leading twist contributions from high-p⊥ jets.