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Extraction of radiative decay width for the non-strange partner of Θ
Authors:Ya. Azimov  V. Kuznetsov  M. V. Polyakov  I. Strakovsky
Affiliation:1.St. Petersburg Nuclear Physics Institute,Gatchina,Russia;2.Institute for Nuclear Research,Moscow,Russia;3.Institut für Theoretische Physik II,Ruhr-Universit?t,Bochum,Germany;4.Center for Nuclear Studies, Physics Department,The George Washington University,Washington,USA
Abstract:
Using the results of the GRAAL Collaboration on the η photoproduction from the neutron target, we attempt to extract the partial radiative width of the possible new nucleon resonance N *(1675). The obtained estimates support this resonance to be a very attractive candidate for the non-strange member of the exotic antidecuplet of baryons --a partner of the Θ+ pentaquark. Our phenomenological value for the transition magnetic moment μ(n * n), appears to be in good agreement with the predictions of the Chiral Quark Soliton Model.
Keywords:13.30.-a Decays of baryons  13.40.Hq Electromagnetic decays  14.20.Gk Baryon resonances with S = 0
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