The Q^2-dependence of the Generalised Gerasimov-Drell-Hearn Integral for the Proton
| dc.creator | Airapetian, A. | |
| dc.date | 2000-08-18 | |
| dc.date.accessioned | 2026-07-07T13:03:48Z | |
| dc.date.available | 2026-07-07T13:03:48Z | |
| dc.description | 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 GeV^2 < Q^2 < 12 GeV^2 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 GeV^2, 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 non-leading twist. | |
| dc.description | 9 pages, 3 figures, 1 table | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0008037 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0008037 | |
| dc.identifier | Phys.Lett.B494:1-8,2000 | |
| dc.identifier | doi:10.1016/S0370-2693(00)01111-4 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/226938 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | The Q^2-dependence of the Generalised Gerasimov-Drell-Hearn Integral for the Proton | |
| dc.type | text |