Passek-Kumericki, K. and Peters, G. (2008) Nucleon form factors to next-to-leading order with light-cone sum rules. PHYSICAL REVIEW D, 78 (3): 033009. ISSN 1550-7998,
Full text not available from this repository.Abstract
We have calculated the leading-twist next-to-leading order (NLO), i.e., O(alpha(s)), correction to the light-cone sum rules prediction for the electromagnetic form factors of the nucleon. We have used the Ioffe nucleon interpolation current and worked in M(N)=0 approximation, with M(N) being the mass of the nucleon. In this approximation, only the Pauli form factor F(2) receives a correction and the calculated correction is quite sizable (ca. 60%). The numerical results for the proton form factors show the improved agreement with the experimental data. We also discuss the problems encountered when going away from M(N)=0 approximation at NLO, as well as gauge invariance of the perturbative results. This work presents the first step towards the NLO accuracy in the light-cone sum rules for baryon form factors.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | VIRTUAL COMPTON-SCATTERING; GENERALIZED PARTON DISTRIBUTIONS; QUANTUM CHROMODYNAMICS; EXCLUSIVE PROCESSES; ASYMPTOTIC-BEHAVIOR; DIMENSIONAL REGULARIZATION; EVANESCENT OPERATORS; EVOLUTION-EQUATIONS; RESONANCE PHYSICS; PERTURBATIVE QCD; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 28 Oct 2020 06:13 |
| Last Modified: | 28 Oct 2020 06:13 |
| URI: | https://pred.uni-regensburg.de/id/eprint/30565 |
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