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2. Evidence for a narrow structure at W∼1.68 GeV in η photoproduction off the neutron

Author

Kuznetsov, V., Churikova, S., Gervino, G., Ghio, F., Girolami, B., Ivanov, D., Jang, J., Kim, A., Kim, W., Ni, A., Vorobiev, Yu., Yurov, M., and Zabrodin, A.

Subjects
Nuclear Theory, Nuclear Experiment
Abstract

New results on quasi-free η photoproduction on the neutron and proton bound in a deuteron target are presented. The γn→ηn quasi-free cross section reveals a bump-like structure which is not seen in the cross section on the proton. This structure may signal the existence of a relatively narrow (M∼1.68 GeV, Γ⩽30 MeV) baryon state.

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