Multipole approach for photo- and electroproduction of kaon

Details Multipole approach for photo- and electroproduction of kaon Multipole approach for photo- and electroproduction of kaon

2007-01-03

arxiv.org/abs/nucl-th/0701007v1

Physics

Nuclear Physics

Nuclear Theory

4 pages, 6 figures, talk given at IX International Conference on Hypernuclear and Strange Particle Physics (HYP2006), Mainz, G

Scientific paper

We have analyzed the experimental data on K+Lambda photoproduction by using a multipole approach. In this analysis we use the background amplitudes constructed from appropriate Feynman diagrams in a gauge-invariant and crossing-symmetric fashion. Results of our analysis reveal the problem of mutual consistency between the new SAPHIR and CLAS data. We found that the problem could lead to different conclusions on ``missing resonances''. We have also extended our analysis to the finite Q^2 region and compared the result with the corresponding electroproduction data.

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