Eur. Phys. J. A 11, 105-111 (2001)
The role of hyperon resonances in processesS. Janssen, J. Ryckebusch, W. Van Nespen, D. Debruyne and T. Van Cauteren
Department of Subatomic and Radiation Physics, Ghent University, Proeftuinstraat 86, B-9000 Gent, Belgium firstname.lastname@example.org
(Received: 8 February 2001 / Revised version: 19 April 2001 Communicated by Th. Walcher)
We discuss the role of hyperon resonances in the u-channel when modeling processes in an effective Lagrangian approach. Without the introduction of hyperon resonances, one is forced to use soft hadronic form factors with a cutoff mass which is at best two times the kaon mass. After inclusion of the hyperon resonances in the u-channel, we obtain a fair description of the data with a cutoff mass of the order of 1.8 GeV.
13.60.Le - Meson production.
14.20.Jn - Hyperons.
14.20.Gk - Baryon resonances with S=0 .
© Società Italiana di Fisica, Springer-Verlag 2001