Combined analysis of γ N η′N, πN → η′N and NN → NNη′ reactions

¹ Department of Physics and Astronomy, The University of Georgia, Athens, GA 30602, USA
² Institute for Nuclear Studies and Department of Physics, The GeorgeWashington University, Washington, DC 20052, USA
³ Institut für Kernphysik (Theorie) and Jülich Center for Hadron Physics, Forschungszentrum-Jülich, 52425 Jülich, Germany

^a e-mail: huang@physast.uga.edu

Abstract

A combined analysis of the free and quasi-free γN → η′N, NN → NNη′, and πN → η′N reactions has been performed within an effective Lagrangian approach. It is found that a set of above-threshold resonances {S₁₁, P₁₁, P₁₃}, with fitted mass values of about M_R = 1925, 2130, and 2050 MeV, respectively, and the four-star sub-threshold P₁₃(1720) resonance reproduce best all existing data for the η′ production processes in the resonance-energy region up to √s = 2.35 GeV.