Bochum 2009 – wissenschaftliches Programm

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HK: Fachverband Hadronen und Kerne

HK 13: Hadron Structure and Spectroscopy I

HK 13.8: Vortrag

Montag, 16. März 2009, 18:15–18:30, H-ZO 20

New narrow nucleon N*(1685) — Vyacheslav Kuznetsov¹ and •Maxim Polyakov² — ¹Kyungpook National University, 702-701, Daegu, Republic of Korea — ²Institut für Theoretische Physik II, Ruhr-Universität Bochum, 44780 Bochum

We argue that the existence of a new narrow (Gamma <25 MeV) nucleon resonance N*(1685) is strongly supported by recent data on eta-photoproduction off the nucleon. The resonance has much stronger photo-coupling to the neutron than to the proton. This nucleon resonance is a good candidate for the non-strange member of the exotic anti-decouplet of baryons -- the partner of the pentaquark Theta+. All up to date known properties of new N*(1685) are summarized.