@article{909878748591432faadb5e58926068eb,
title = "Evidence for quark-hadron duality in the proton spin asymmetry A(1)",
abstract = "Spin-dependent lepton-nucleon scattering data have been used to investigate the validity of the concept of quark-hadron duality for the spin asymmetry A(1). Longitudinally polarized positrons were scattered off a longitudinally polarized hydrogen target for values of Q(2) between 1.2 and 12 GeV2 and values of W-2 between 1 and 4 GeV2. The average double-spin asymmetry in the nucleon resonance region is found to agree with that measured in deep-inelastic scattering at the same values of the Bjorken scaling variable x. This finding implies that the description of A(1) in terms of quark degrees of freedom is valid also in the nucleon resonance region for values of Q(2) above 1.6 GeV2.",
keywords = "POLARIZED HYDROGEN, Q(2)-DEPENDENCE, CONSTRAINTS, POLARIMETER, RESONANCES, SCATTERING, BEHAVIOR, NEUTRON, SUM",
author = "A. Airapetian and N. Akopov and Z. Akopov and M. Amarian and V.V. Ammosov and E.C. Aschenauer and H. Avakian and R. Avakian and A. Avetissian and E. Avetissian and P. Bailey and V. Baturin and C. Baumgarten and M. Beckmann and S. Belostotski and S. Bernreuther and N. Bianchi and H.P. Blok and H. Bottcher and A. Borissov and O. Bouhali and M. Bouwhuis and J. Brack and S. Brauksiepe and A. Brull and I. Brunn and H.J. Bulten and G.P. Capitani and E. Cisbani and G. Ciullo and G.R. Court and P.F. Dalpiaz and {De Leo}, R. and {De Nardo}, L. and {De Sanctis}, E. and E. Devitsin and P.K.A.D. Huberts and {Di Nezza}, P. and M. Duren and M. Ehrenfried and G. Elbakian and F. Ellinghaus and U. Elschenbroich and J. Ely and R. Fabbri and A. Fantoni and A. Fechtchenko and L. Felawka and B.W. Filippone and {van den Brand}, J.F.J. and {HERMES Collaboration}",
year = "2003",
month = mar,
day = "7",
doi = "10.1103/PhysRevLett.90.092002",
language = "English",
volume = "90",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "9",
}