478 research outputs found
Missing Resonances in Kaon Photoproduction on the Nucleon
New kaon photoproduction data on a proton, gamma + p --> K+ + Lambda, are
analyzed using a multipole approach. The background terms are given in terms of
gauge invariant, crossing symmetric, Born diagrams with hadronic form factors,
while the resonances are parameterized using Breit-Wigner forms. Preliminary
results suggest a number of new resonances, as predicted by many quark model
studies. A comparison between the extracted multipoles and those obtained from
KAON-MAID is presented.Comment: 10 pages, 6 figures, invited talk at the International Symposium on
Electrophotoproduction of Strangeness on Nucleons and Nuclei (SENDAI 03),
Sendai, Japan, 16-18 Jun 200
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