; Aschenauer, E.C. ; 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, H.J. ; Capitani, G.P. ; Carter, P. ; Chumney, P. ; Cisbani, E.
; Court, G.R. ; Dalpiaz, P.F. ; De Leo, R. ; De Nardo, L. ; De Sanctis, E. ; De Schepper, D. ; Devitsin, E. ; de Witt Huberts, P.K.A. ; Di Nezza, P. ; Djordjadze, V. ; Düren, M. ; Dvoredsky, A. ; Elbakian, G. ; Ely, J. ; Fantoni, A. ; Fechtchenko, A. ; Ferro-Luzzi, M. ; Fiedler, K. ; Filippone, B.W. ; Fischer, H. ; Fox, B. ; Franz, J. ; Frullani, S. ; Gärber, Y. ; Garibaldi, F. ; Garutti, E. ; Gavrilov, G. ; Gharibyan, V. ; Golendukhin, A. ; Graw, G. ; Grebeniouk, O. ; Green, P.W. ; Greeniaus, L.G. ; Gute, A. ; Haeberli, W. ; Hartig, M. ; Hasch, D. ; Heesbeen, D. ; Heinsius, F.H. ; Henoch, M. ; Hertenberger, R. ; Hesselink, W. ; Hoffmann-Rothe, P. ; Hofman, G. ; Holler, Y. ; Holt, R.J. ; Hommez, B. ; Iarygin, G. ; Iodice, M. ; Izotov, A. ; Jackson, H.E. ; Jgoun, A. ; Jung, P. ; Kaiser, R. ; Kanesaka, J. ; Kinney, E. ; Kisselev, A. ; Kitching, P. ; Kobayashi, H. ; Koch, N. ; Königsmann, K. ; Kolster, H. ; Korotkov, V. ; Kotik, E. ; Kozlov, V. ; Krivokhijine, V.G. ; Kyle, G. ; Lagamba, L. ; Laziev, A. ; Lenisa, P. ; Lindemann, T. ; Lorenzon, W. ; Makins, N.C.R. ; Martin, J.W. ; Marukyan, H. ; Masoli, F. ; McAndrew, M. ; McIlhany, K. ; McKeown, R.D. ; Menden, F. ; Metz, A. ; Meyners, N. ; Mikloukho, O. ; Miller, C.A. ; Milner, R. ; Mitsyn, V. ; Muccifora, V. ; Mussa, R. ; Nagaitsev, A. ; Nappi, E. ; Naryshkin, Y. ; Nass, A. ; Negodaeva, K. ; Nowak, W.-D. ; O'Neill, T.G. ; Openshaw, R. ; Ouyang, J. ; Owen, B.R. ; Pate, S.F. ; Potashov, S. ; Potterveld, D.H. ; Rakness, G. ; Rappoport, V. ; Redwine, R. ; Reggiani, D. ; Reolon, A.R. ; Ristinen, R. ; Rith, K. ; Robinson, D. ; Ruh, M. ; Ryckbosch, D. ; Sakemi, Y. ; Savin, I. ; Scarlett, C. ; Schäfer, A. ; Schill, C. ; Schmidt, F. ; Schnell, G. ; Schüler, K.P. ; Schwind, A. ; Seibert, J. ; Seitz, B. ; Shibata, T.-A. ; Shin, T. ; Shutov, V. ; Simani, C. ; Simon, A. ; Sinram, K. ; Steffens, E. ; Steijger, J.J.M. ; Stewart, J. ; Stösslein, U. ; Suetsugu, K. ; Sutter, M. ; Tallini, H. ; Taroian, S. ; Terkulov, A.
; Tessarin, S. ; Thomas, E. ; Tipton, B. ; Tytgat, M. ; Urciuoli, G.M. ; van den Brand, J.F.J. ; van der Steenhoven, G. ; van de Vyver, R. ; van Hunen, J.J. ; Vetterli, M.C.
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; Visser, J. ; Volk, E. ; Weiskopf, C. ; Wendland, J. ; Wilbert, J. ; Wise, T. ; Yen, S. ; Yoneyama, S. ; Zohrabian, H. | Item type: | Article | ||||
|---|---|---|---|---|---|
| Journal or Publication Title: | Physics Letters B | ||||
| Publisher: | ELSEVIER SCIENCE BV | ||||
| Place of Publication: | AMSTERDAM | ||||
| Volume: | 494 | ||||
| Number of Issue or Book Chapter: | 1-2 | ||||
| Page Range: | pp. 1-8 | ||||
| Date: | 2000 | ||||
| Institutions: | Physics > Institute of Theroretical Physics > Chair Professor Schäfer > Group Andreas Schäfer | ||||
| Identification Number: |
| ||||
| Keywords: | POLARIZED STRUCTURE FUNCTIONS; DEEP-INELASTIC SCATTERING; STRUCTURE FUNCTIONS G(1); SUM-RULE; SPIN STRUCTURE; RADIATIVE-CORRECTIONS; MUON SCATTERING; NUCLEON; NEUTRON; PARTICLES; deep inelastic scattering; sum rules; asymmetries; photoabsorption | ||||
| Dewey Decimal Classification: | 500 Science > 530 Physics | ||||
| Status: | Published | ||||
| Refereed: | Yes, this version has been refereed | ||||
| Created at the University of Regensburg: | Yes | ||||
| Item ID: | 74014 |
Abstract
The dependence on Q(2) (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 < Q(2) < 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 ...

Abstract
The dependence on Q(2) (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 < Q(2) < 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 Q(2) > 3 GeV2, while both contributions are important at low Q(2). The total integral shows no significant deviation from a 1/Q(2) behaviour in the measured Q(2) range, and thus no sign of large effects due to either nucleon-resonance excitations or nonleading twist. (C) 2000 Elsevier Science B.V. All rights reserved.
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