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arXiv · 1705.05177

Observation of Narrow $N^+(1685)$ and $N^0(1685)$ Resonances in $\gamma N \to \eta \pi N$ Reactions

V. Kuznetsov·F. Mammoliti·F. Tortorici·V. Bellini·V. Brio·A. Gridnev·N. Kozlenko·G. Russo·A. Spatafora·M. L. Sperduto·V. Sumachev·C. Sutera
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Abstract

Observation of a narrow structure at $W\sim 1.68$ GeV in the excitation functions of some photon- and pion-induced reactions may signal a new narrow isospin-1/2 $N(1685)$ resonance. New data on the $\gamma N \to \pi \eta N$ reactions from GRAAL seems to reveal the signals of both $N^+(1685)$ and $N^0(1685)$ resonances.

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V. Kuznetsov, F. Mammoliti, F. Tortorici, V. Bellini, V. Brio, A. Gridnev, N. Kozlenko, G. Russo, A. Spatafora, M. L. Sperduto, V. Sumachev, C. Sutera. 2017-05-15. Observation of Narrow $N^+(1685)$ and $N^0(1685)$ Resonances in $\gamma N \to \eta \pi N$ Reactions. https://doi.org/10.1134/s0021364017230023

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