Eur. Phys. J. A (2003) 17: 385-389
https://doi.org/10.1140/epja/i2002-10181-x

Original Paper

Quark-hadron duality and Q² evolution of the GDH integral in the HERMES experiment

INFN - Laboratori Nazionali di Frascati, Frascati (Roma), Italy

^* e-mail: alessandra.fantoni@lnf.infn.it

Abstract

First results on quark-hadron duality in the spin sector from the HERMES experiment are reported in the range $1.2\le Q^2 \le 12$ GeV² and $1\le W^2 \le 4$ GeV². A complete set of measurements of the generalised GDH integrals for the deuteron, proton and neutron is also shown in the same Q² range and in the full W² range.