New Isobar Models for \(K^+\Lambda\) Electroproduction Jovan Alfian Djaja (a*), Terry Mart (a)
(a) Departemen Fisika, FMIPA, Universitas Indonesia, Depok 16424, Indonesia
*jovan.alfian[at]ui.ac.id
Abstract
The electroproduction of kaons on protons has been studied using two covariant isobar models. These models incorporate propagators and vertex factors from our previous work. In total, the current study includes 26 nucleon resonances and 20 hyperon resonances, with spins up to 13/2. Instead of the commonly used dipole model, we adopt two alternative approaches for the electromagnetic form factors. The unknown parameters in the models, such as coupling constants and form factor cutoffs, are determined by fitting to nearly 2000 experimental data points. The resulting models show good agreement with the available experimental data.
Keywords: Kaon Electroproduction, Electromagnetic Form Factor, Nucleon Resonances, Hyperon Resonances
