Reggeon and pion contributions in semi-exclusive diffractive processes at HERA
arXiv:hep-ph/9701254 · doi:10.1103/PhysRevD.56.3955
Abstract
A detailed analysis of semi-exclusive diffractive processes in e-p DIS at HERA, with the diffractive final states in the forward direction is presented. The contributions of the subleading f_2, ω, a_2, ρreggeons and the pion exchanges to the diffractive structure function with the forward proton or neutron are estimated. It is found that the (a_2,ρ) reggeons are entirely responsible for the forward neutron production at x_P < 10^{-3}. The πN production in the forward region is estimated using the Deck mechanism. The significance of this reaction for the processes measured at HERA, especially with the leading neutron, is discussed.
Strongly revised version accepted for publication in Phys.Rev.D. Latex, 14 pages with 5 eps figures included
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