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Possible $$eta ^{prime} d$$ bound state and its $$s$$-channel formation in the $$gamma d to eta d$$ reaction

$$eta ^{prime} d$$束縛状態と、その$$gamma d to eta d$$反応による$$s$$-チャンネル生成の可能性

関原 隆泰; 藤岡 宏之*; 石川 貴嗣*

Sekihara, Takayasu; Fujioka, Hiroyuki*; Ishikawa, Takatsugu*

We theoretically investigate a possibility of an $$eta ^{prime} d$$ bound state and its formation in the $$gamma d to eta d$$ reaction. First, in the fixed center approximation to the Faddeev equations we obtain an $$eta ^{prime} d$$ bound state with a binding energy of 25 MeV and width of 19 MeV, where we take the $$eta ^{prime} N$$ interaction with a coupling to the $$eta N$$ channel from the linear $$sigma$$ model. Then, in order to investigate the feasibility from an experimental point of view, we calculate the cross section of the $$gamma d to eta d$$ reaction at the photon energy in the laboratory frame around 1.2 GeV.

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パーセンタイル:28.07

分野:Physics, Nuclear

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