Delta and Omega electromagnetic form factors in a Dyson-Schwinger/Bethe-Salpeter approach
We investigate the electromagnetic form factors of the Delta and the Omega baryons within the Poincare-covariant framework of Dyson-Schwinger and Bethe-Salpeter equations. The three-quark core contributions of the form factors are evaluated by employing a quark-diquark approximation. We use a consistent setup for the quark-gluon dressing, the quark-quark bound-state kernel and the quark-photon interaction. Our predictions for the multipole form factors are compatible with available experimental data and quark-model estimates. The current-quark mass evolution of the static electromagnetic properties agrees with results provided by lattice calculations.
- Research Organization:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- AC05-06OR23177
- OSTI ID:
- 1007997
- Report Number(s):
- JLAB-THY-10-1223; DOE/OR/23177-1359; arXiv:1008.3184; PRVDAQ; TRN: US1101331
- Journal Information:
- Phys. Rev. D, Vol. 82; ISSN 1550-7998
- Country of Publication:
- United States
- Language:
- English
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