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Theoretical study of photoproduction of $$eta ^{prime} N$$ bound state on deuteron target with forward proton emission

Sekihara, Takayasu; Sakai, Shuntaro*; Jido, Daisuke*

Possibilities of observing a signal of an $$eta ^{prime} n$$ bound state are investigated by considering photoproductions of the $$eta$$ and $$eta ^{prime}$$ mesons on a deuteron target with forward proton emission. By using effective models for the $$gamma p to eta ^{(prime)} p$$ and $$eta ^{(prime)} n to eta ^{(prime)} n$$ amplitudes, we calculate photoproduction cross sections of the $$eta ^{prime} n$$ bound state. As a result, we find that the signal of the $$eta ^{prime} n$$ bound state can be seen below the $$eta ^{prime} n$$ threshold in the $$eta n$$ invariant mass spectrum.



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