Lenz, Alexander and Wittmann, A. and Stein, E. (2004) Improved light-cone sum rules for the electromagnetic form factors of the nucleon. PHYSICS LETTERS B, 581 (3-4). pp. 199-206. ISSN 0370-2693, 1873-2445
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We calculate the electromagnetic form factors of the nucleon within the light-cone sum rule approach. In comparison to previous work [Phys. Rev. D 65 (2002) 074011] we suggest to use a pure isospin-1/2 interpolating field for the nucleon, since the Chernyak-Zhitnitsky current leads to numerically large, unphysical, isospin violating contributions. The leading-order sum rules are derived for the form factors and the results are confronted with the experimental data. Our approach tends to favor the nucleon distribution amplitudes that are not far from the asymptotic shape. (C) 2004 Elsevier B.V. All rights reserved.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | CHIRAL SYMMETRY-BREAKING; LARGE MOMENTUM-TRANSFER; QUANTUM CHROMODYNAMICS; PROTON; QCD; NEUTRON; BARYONS; (GEV/C)(2); Q(2)=1.75; TRANSFERS; QCD; nucleon; power corrections; distribution amplitudes; electromagnetic form factors |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 21 Jul 2021 11:55 |
| Last Modified: | 21 Jul 2021 11:55 |
| URI: | https://pred.uni-regensburg.de/id/eprint/37992 |
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