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

Authors
Janssen, S Ryckebusch, J Van Nespen, W Debruyne, D Van Cauteren, T
Citation
S. Janssen et al., The role of hyperon resonances in p(gamma, K+)Lambda processes, EUR PHY J A, 11(1), 2001, pp. 105-111
Citations number
23
Categorie Soggetti
Physics
Journal title
EUROPEAN PHYSICAL JOURNAL A
ISSN journal
14346001 → ACNP
Volume
11
Issue
1
Year of publication
2001
Pages
105 - 111
Database
ISI
SICI code
1434-6001(200105)11:1<105:TROHRI>2.0.ZU;2-H
Abstract
We discuss the role of hyperon resonances in the u-channel when modeling p (gamma, K+) A processes in an effective Lagrangian approach. Without the in troduction of hyperon resonances, one is forced to use soft hadronic form f actors with a cutoff mass which is at best two times the kaon mass. After i nclusion of the hyperon resonances in the u-channel, we obtain a fair descr iption of the data xith a cutoff mass of the order of 1.8 GeV.