Kaon photoproduction and electroproduction near threshold

Details Kaon photoproduction and electroproduction near threshold Kaon photoproduction and electroproduction near threshold

2011-04-14

arxiv.org/abs/1104.2680v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, 5 figures, Talk given at Baryons'10: International Conference on the Structure of Baryons, December 7-11, 2010, Osak

Scientific paper

We analyze the electromagnetic production of K^+Lambda and K^0Lambda near their production thresholds by using isobar models. In the K^+Lambda channel we show that the model can nicely describe the available experimental data. In the K^0Lambda channel we demonstrate that the K^0 charge form factor has sizable effects on the longitudinal cross section. By extending the model up to W = 1730 MeV, we are able to observe the existence of the narrow P_{11} (J^p = 1/2^+) resonance in the kaon photoproduction process. It is found that the most convincing mass (width) of this resonance is 1650 MeV (5 MeV).

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