DIS structure functions and the double-spin asymmetry in $Ï^0$ electroproduction within a Regge approach

N. I. Kochelev; K. Lipka; W. -D. Nowak; V. Vento; A. V. Vinnikov

doi:10.1103/PhysRevD.67.074014

paper

DIS structure functions and the double-spin asymmetry in $I ¨ ^{0}$ electroproduction within a Regge approach

arXiv:hep-ph/0211121 · doi:10.1103/PhysRevD.67.074014

Abstract

The proton, neutron and deuteron structure functions $F_{2} (x, Q^{2})$ and $g_{1} (x, Q^{2})$ , measured at intermediate $Q^{2}$ , are analyzed within a Regge approach. This analysis serves to fix the parameters of this scheme which are then used to calculate, in a unified Regge approach, the properties of $I ¨ ^{0}$ meson electroproduction on the proton and the deuteron. In this way, the double-spin asymmetry observed at HERMES in $I ¨ ^{0}$ electroproduction on the proton, can be related to the anomalous behavior of the flavor-singlet part of the spin-dependent structure function $g_{1} (x, Q^{2})$ at small $x$ .

10 pages, 13 figures, RevTex4

DIS structure functions and the double-spin asymmetry in I¨0 electroproduction within a Regge approach

Abstract

DIS structure functions and the double-spin asymmetry in $I ¨ ^{0}$ electroproduction within a Regge approach