The role of hyperon resonances in p(gamma,K+)Lambda processes

Details The role of hyperon resonances in p(gamma,K+)Lambda processes The role of hyperon resonances in p(gamma,K+)Lambda processes

2001-05-04

arxiv.org/abs/nucl-th/0105008v1

Eur.Phys.J. A11 (2001) 105-111

Physics

Nuclear Physics

Nuclear Theory

7 pages, 7 eps figures, submitted to Eur. Phys. J. A

Scientific paper

10.1007/s100500170100

We discuss the role of hyperon resonances in the u-channel when modeling p (gamma,K+)Lambda 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.

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