Radiative decays of the Sigma0(1385) and Lambda(1520) hyperons

Details Radiative decays of the Sigma0(1385) and Lambda(1520) hyperons Radiative decays of the Sigma0(1385) and Lambda(1520) hyperons

2005-03-07

arxiv.org/abs/hep-ex/0503014v3

Phys.Rev.C71:054609,2005; Erratum-ibid.C72:039902,2005

Physics

High Energy Physics

High Energy Physics - Experiment

15 pages, 19 eps figures, revtex4, accepted for publication Phys. Rev. C. Additional reference added with discusion in introdu

Scientific paper

10.1103/PhysRevC.71.054609 10.11

The electromagnetic decays of the Sig0(1385) and Lambda(1520) hyperons were studied in photon-induced reactions gamma p -> K+ Lambda(1116)gamma in the CLAS detector at the Thomas Jefferson National Accelerator Facility. We report the first observation of the radiative decay of the Sig0(1385) and a measurement of the Lambda(1520) radiative decay width. For the Sig0(1385) -> Lambda(1116)gamma transition, we measured a partial width of 479+/-120(stat)+81-100(sys) keV, larger than all of the existing model predictions. For the Lambda(1520) -> Lambda(1116)gamma transition, we obtained a partial width of 167+/-43(stat)+26-12(sys) keV.

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