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arXiv · 1001.3840

Investigation of the anomaly in eta-photoproduction off the neutron

D. Werthmüller
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Abstract

Quasi-free photoproduction of eta-mesons off the neutron and off the proton has been studied using a deuterium target and bremsstrahlung photons produced by MAMI-C with incident energies up to 1.5 GeV. The eta-mesons were detected in coincidence with the recoil nucleons thus a fully exclusive measurement was performed. Preliminary results show a bump-like structure in the excitation function for the neutron close to W $\approx$ 1675 MeV which is not seen for the proton. Considering the experimental resolution and using a Breit-Wigner fit the width of this structure was approximated below 50 MeV.

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D. Werthmüller. 2010-01-21. Investigation of the anomaly in eta-photoproduction off the neutron. https://doi.org/10.1088/1674-1137%2F33%2F12%2F051

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