Eur. Phys. J. A 14, 477-489 (2002)
DOI: 10.1140/epja/i2002-10009-9
Electroweak form factors of non-strange baryons
D. Merten, U. Löring, K. Kretzschmar, B. Metsch and H.-R. PetryInstitut für Theoretische Kernphysik, Nußallee 14-16, D-53115 Bonn, Germany merten@itkp.uni-bonn.de
(Received: 4 April 2002 Communicated by V.V. Anisovich)
Abstract
We compute electroweak form factors of the nucleon and
photon transition form factors of non-strange baryon resonances up to the third
resonance region in a model with instanton-induced interaction. The
calculation is based on the Bethe-Salpeter equation
for three light constituent quarks and is fully relativistic
(U. Löring et al., Eur. Phys. J. A 10, 309 (2001)). Static
nucleon properties and photon resonance couplings are in good
agreement with experiment and the
Q2 behaviour of the
experimentally known form factors up to large
momentum transfer is accounted for.
11.10.St - Bound and unstable states; Bethe-Salpeter equations.
12.39.Ki - Relativistic quark model.
13.40.Gp - Electromagnetic form factors.
© Società Italiana di Fisica, Springer-Verlag 2002
