Photoproduction of $η$ and $η\prime$ Mesons off Protons

Details Photoproduction of $η$ and $η\prime$ Mesons off Protons Photoproduction of $η$ and $η\prime$ Mesons off Protons

2009-09-07

arxiv.org/abs/0909.1248v2

Phys.Rev.C80:055202,2009

Physics

Nuclear Physics

Nuclear Experiment

13 pages, 21 figures, updated author list, submitted to PRC

Scientific paper

10.1103/PhysRevC.80.055202

Total and differential cross sections for $\eta$ and $\eta ^\prime$ photoproduction off the proton have been determined with the CBELSA/TAPS detector for photon energies between 0.85 and 2.55 GeV. The $\eta$ mesons are detected in their two neutral decay modes, $\eta\to\gamma\gamma$ and $\eta\to 3\pi^0\to 6\gamma$, and for the first time, cover the full angular range in $\rm cos \theta_{cm}$ of the $\eta$ meson. These new $\eta$ photoproduction data are consistent with the earlier CB-ELSA results. The $\eta ^\prime$ mesons are observed in their neutral decay to $\pi^0\pi^0\eta\to 6\gamma$ and also extend the coverage in angular range.

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