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
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.
PACS: 13.30.-a Decays of baryons – / 13.40.Hq Electromagnetic decays – / 14.20.Gk Baryon resonances with S = 0 –
© Società Italiana di Fisica and Springer-Verlag, 2005