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Decays of Baryon Resonances into K Lambda, K^+ Sigma^0 and K^0 Sigma^+

A. V. Sarantsev·V. A. Nikonov·A. V. Anisovich·E. Klempt·U. Thoma
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Abstract

Cross sections, beam asymmetries, and recoil polarisations for the reactions gamma p to K^+ Lambda ; gamma to K^+ Sigma^0, and gamma p to K^0 Sigma^+ have been measured by the SAPHIR, CLAS, and LEPS collaborations with high statistics and good angular coverage for centre-of-mass energies between 1.6 and 2.3 GeV. The combined analysis of these data with data from pi and eta photoproduction reveals evidence for new baryon resonances in this energy region. A new P_{11} state with mass 1840 MeV and width 140 MeV was observed contributing to most of the fitted reactions. The data demand the presence of two D_{13} states at 1870 and 2170 MeV.

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A. V. Sarantsev, V. A. Nikonov, A. V. Anisovich, E. Klempt, U. Thoma. 2005-06-06. Decays of Baryon Resonances into K Lambda, K^+ Sigma^0 and K^0 Sigma^+. https://doi.org/10.1140/epja%2Fi2005-10121-4

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