Nucleon resonances in AdS/QCD
Abstract
We describe the electroproduction of the N(1440) Roper resonance in soft-wall anti-de Sitter/quantum chromodynamics. The Roper resonance is identified as the first radially excited state of the nucleon, where higher Fock states in addition to the three-quark (3q) component are included. The main conclusion is that the leading 3q component plays the dominant role in the description of electroproduction properties of this resonance: form factors, helicity amplitudes, and charge densities. The obtained results are in good agreement with the recent results of the CLAS Collaboration at JLab.
- Publication:
-
Physical Review D
- Pub Date:
- January 2013
- DOI:
- arXiv:
- arXiv:1212.6252
- Bibcode:
- 2013PhRvD..87a6017G
- Keywords:
-
- 11.10.Kk;
- 13.40.Hq;
- 14.20.Dh;
- 14.20.Gk;
- Field theories in dimensions other than four;
- Electromagnetic decays;
- Protons and neutrons;
- Baryon resonances with S=0;
- High Energy Physics - Phenomenology
- E-Print:
- 20 pages. arXiv admin note: text overlap with arXiv:1204.6612