Duke Physics

Publications [#374824] of Igor Akushevich

Papers Published

1. Airapetian, A; Akopov, N; Akushevich, I; Amarian, M; Arrington, J; Aschenauer, EC; Avakian, H; Avakian, R; Avetissian, A; Avetissian, E; Bailey, P; Bains, B; Baumgarten, C; Beckmann, M; Belostotski, S; Bernreuther, S; Bianchi, N; Böttcher, H; Borissov, A; Bouwhuis, M; Brack, J; Brauksiepe, S; Braun, B; Brückner, W; Brüll, A; Budz, P; Bulten, HJ; Capitani, GP; Carter, P; Chumney, P; Cisbani, E; Shibata, TA, The Q2-dependence of the generalised Gerasimov-Drell-Hearn integral for the proton, Physics Letters Section B Nuclear Elementary Particle and High Energy Physics, vol. 494 no. 1-2 (November, 2000), pp. 1-8 [doi] .

   Abstract:
   The dependence on Q² (the negative square of the 4-momentum of the exchanged virtual photon) of the generalised Gerasimov-Drell-Hearn integral for the proton has been measured in the range 1.2 GeV² < Q² < 12 GeV² by scattering longitudinally polarised positrons on a longitudinally polarised hydrogen gas target. The contributions of the nucleon-resonance and deep inelastic regions to this integral have been evaluated separately. The latter has been found to dominate for Q² > 3 GeV², while both contributions are important at low Q². The total integral shows no significant deviation from a 1/Q² behaviour in the measured Q² range, and thus no sign of large effects due to either nucleon-resonance excitations or nonleading twist. (C) 2000 Elsevier Science B.V.

Duke University * Arts & Sciences * Physics * Faculty * Staff * Grad * Researchers * Reload * Login
Copyright (c) 2001-2002 by Duke University Physics.