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PHOTOPRODUCTION OF η AND η′ MESONS ON THE NUCLEON

LOTHAR TIATOR

Institut für Kernphysik, Universität Mainz, D-55099 Mainz, Germany

https://doi.org/10.1142/S0217751X0703546XCited by:9 (Source: Crossref)

Abstract

The isobar models η-MAID and η′-MAID have been used to analyze new data on quasi-free η photoproduction on the deuteron from Bonn and recent η′ data on the proton from Jlab. In η photoproduction on the neutron a bump around W = 1700 MeV was observed which could possibly arise from a narrow P₁₁ state that is discussed as a non-strange member of the Θ⁺ antidecuplett. In η′ photoproduction on the proton resonance contributions are found that can be attributed to missing resonances in the energy region around W = 1900 MeV.

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