Inclusion of KΛ electroproduction data in a coupled channel analysis

Exclusive electroproduction reactions provide an access to the structure of excited baryons. To extract electroproduction multipoles encoding this information, the J & uuml;lich-Bonn-Washington (JBW) analysis framework is extended to the analysis of differential cross sections in K Lambda electroproduction. This update enlarges the scope of previous coupled-channel analyses of pions and eta mesons, with photoproduction reactions as boundary condition in all analyzed electroproduction reactions. Polarization observables are predicted and compared to recent CLAS data. The comparison shows the relevance of these data to pin down baryon properties.

Automated summary

Exclusive electroproduction reactions provide valuable insight into the structure of excited baryons. This study extends the JBW analysis framework to analyze differential cross sections in K Lambda electroproduction and predicts polarization observables. Comparison with recent CLAS data demonstrates the importance of these measurements in understanding baryon properties.