Delta and Omega electromagnetic form factors in a Dyson-Schwinger/Bethe-Salpeter approach - INSPIRE

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Delta and Omega electromagnetic form factors in a Dyson-Schwinger/Bethe-Salpeter approach

Diana Nicmorus
(
- Frankfurt U., FIAS and
- Jefferson Lab
)
,
Gernot Eichmann
(
- Darmstadt, Tech. Hochsch.
)
,
Reinhard Alkofer
(
- Graz U.
)

Aug, 2010

17 pages

Published in:

Phys.Rev.D 82 (2010) 114017

e-Print:

1008.3184 [hep-ph]

DOI:

10.1103/PhysRevD.82.114017

Report number:

JLAB-THY-10-1223

View in:

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Abstract: (arXiv)

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.

14.20.Gk
12.38.Lg
form factor: electromagnetic
quark: mass
Bethe-Salpeter equation
Dyson-Schwinger equation
Delta(1232): form factor
Omega-: form factor
quark model
diquark

References(89)

Figures(0)

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