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Particles and Fields


Eur. Phys. J. C 18, 747-756
DOI: 10.1007/s100520100570

Baryon form factors in chiral perturbation theory

B. Kubis and U.-G. Meißner

Forschungszentrum Jülich, Institut für Kernphysik (Theorie), 52425 Jülich, Germany

b.kubis@fz-juelich.de
Ulf-G.Meissner@fz-juelich.de

(Received: 25 October 2000 / Published online: 23 January 2001 -© Springer-Verlag 2001)

Abstract
We analyze the electromagnetic form factors of the ground state baryon octet to fourth order in relativistic baryon chiral perturbation theory. Predictions for the $\Sigma^-$ charge radius and the $\Lambda$-$\Sigma^0$ transition moment are found to be in excellent agreement with the available experimental information. Furthermore, the convergence behavior of the hyperon charge radii is shown to be more than satisfactory.



© Società Italiana di Fisica, Springer-Verlag 2001