The Q2-dependence of the generalised Gerasimov-Drell-Hearn integral for the proton
Publication
, Journal Article
Airapetian, A; Akopov, N; Akushevich, I; Amarian, M; Arrington, J; Aschenauer, EC; Avakian, H; Avakian, R; Avetissian, A; Avetissian, E ...
Published in: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
November 23, 2000
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 Scholars
Published In
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
DOI
ISSN
0370-2693
Publication Date
November 23, 2000
Volume
494
Issue
1-2
Start / End Page
1 / 8
Related Subject Headings
- Nuclear & Particles Physics
- 51 Physical sciences
- 49 Mathematical sciences
- 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
- 0201 Astronomical and Space Sciences
- 0105 Mathematical Physics
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Airapetian, A., Akopov, N., Akushevich, I., Amarian, M., Arrington, J., Aschenauer, E. C., … Shibata, T. A. (2000). The Q2-dependence of the generalised Gerasimov-Drell-Hearn integral for the proton. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 494(1–2), 1–8. https://doi.org/10.1016/S0370-2693(00)01111-4
Airapetian, A., N. Akopov, I. Akushevich, M. Amarian, J. Arrington, E. C. Aschenauer, H. Avakian, et al. “The Q2-dependence of the generalised Gerasimov-Drell-Hearn integral for the proton.” Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 494, no. 1–2 (November 23, 2000): 1–8. https://doi.org/10.1016/S0370-2693(00)01111-4.
Airapetian A, Akopov N, Akushevich I, Amarian M, Arrington J, Aschenauer EC, et al. The Q2-dependence of the generalised Gerasimov-Drell-Hearn integral for the proton. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 2000 Nov 23;494(1–2):1–8.
Airapetian, A., et al. “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, Nov. 2000, pp. 1–8. Scopus, doi:10.1016/S0370-2693(00)01111-4.
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. 2000 Nov 23;494(1–2):1–8.
Published In
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
DOI
ISSN
0370-2693
Publication Date
November 23, 2000
Volume
494
Issue
1-2
Start / End Page
1 / 8
Related Subject Headings
- Nuclear & Particles Physics
- 51 Physical sciences
- 49 Mathematical sciences
- 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
- 0201 Astronomical and Space Sciences
- 0105 Mathematical Physics