The Q^2-dependence of the Generalised Gerasimov-Drell-Hearn Integral for the Proton

Details The Q^2-dependence of the Generalised Gerasimov-Drell-Hearn Integral for the Proton The Q^2-dependence of the Generalised Gerasimov-Drell-Hearn Integral for the Proton

2000-08-18

arxiv.org/abs/hep-ex/0008037v1

Phys.Lett.B494:1-8,2000

Physics

High Energy Physics

High Energy Physics - Experiment

9 pages, 3 figures, 1 table

Scientific paper

10.1016/S0370-2693(00)01111-4

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.

Affiliated with

Also associated with

No associations

Rating

The Q^2-dependence of the Generalised Gerasimov-Drell-Hearn Integral for the Proton does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The Q^2-dependence of the Generalised Gerasimov-Drell-Hearn Integral for the Proton, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Q^2-dependence of the Generalised Gerasimov-Drell-Hearn Integral for the Proton will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-125663