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

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

2002-11-08

arxiv.org/abs/hep-ph/0211121v3

Phys.Rev. D67 (2003) 074014

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 13 figures, RevTex4

Scientific paper

10.1103/PhysRevD.67.074014

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 $\rho^0$ meson electroproduction on the proton and the deuteron. In this way, the double-spin asymmetry observed at HERMES in $\rho^0$ 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 $x$.

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