Probing the ΔNN component of 3He

G. M. Huber, G. J. Lolos, E. J. Brash, S. Dumalski, F. Farzanpay, M. Iurescu, Z. Papandreou, A. Shinozaki, A. Weinerman, T. Emura, H. Hirosawa, K. Niwa, H. Yamashita, K. Maeda, T. Terasawa, Hirohito Yamazaki, S. Endo, K. Miyamoto, Y. Sumi, G. GarinoK. Maruyama, A. Leone, R. Perrino, T. Maki, A. Sasaki, Y. Wada

研究成果: Article査読

7 被引用数 (Scopus)


The 3He(γ,π±p) reactions were measured simultaneously over a tagged photon energy range of 800 ≤Eγ≤1120 MeV, well above the Δ resonance region. An analysis was performed to kinematically isolate Δ knockout events from conventional Δ photoproduction events, and a statistically significant excess of π+ p events was identified, consistent with Δ++ knockout. Two methods were used to estimate the ΔNN probability in the 3He ground state corresponding to the observed knockout cross section. The first gave a lower probability limit of 1.5±0.6±0.5 %; the second yielded an upper limit of about 2.6%.

ジャーナルPhysical Review C - Nuclear Physics
出版ステータスPublished - 2000 10

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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