Eur. Phys. J. A (2005) 25: 325-327
https://doi.org/10.1140/epja/i2005-10139-6

Original Article

Extraction of radiative decay width for the non-strange partner of Θ

¹ St. Petersburg Nuclear Physics Institute, 188300, Gatchina, Russia
² Institute for Nuclear Research, 117312, Moscow, Russia
³ Institut für Theoretische Physik II, Ruhr-Universität, D-44780, Bochum, Germany
⁴ Center for Nuclear Studies, Physics Department, The George Washington University, 23606, Washington, DC, USA

Received: 13 July 2005
Accepted: 17 August 2005
Published online: 10 October 2005

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.