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26 April 2024

» arxiv » nucl-th/0105008

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The role of hyperon resonances in p(gamma,K+)Lambda processes
S. Janssen ; J. Ryckebusch ; W. Van Nespen ; D. Debruyne ; T. Van Cauteren ;
Date:	4 May 2001
Journal:	Eur.Phys.J. A11 (2001) 105-111
Subject:	nucl-th
Abstract:	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.
Source:	arXiv, nucl-th/0105008
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