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. Garino; K. Maruyama; A. Leone; R. Perrino; T. Maki; A. Sasaki; Y. Wada

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

SCI - Physics

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

The ³He(γ,π^±p) reactions were measured simultaneously over a tagged photon energy range of 800 ≤E_γ≤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%.

Original language	English
Article number	044001
Pages (from-to)	440011-440018
Number of pages	8
Journal	Physical Review C - Nuclear Physics
Volume	62
Issue number	4
Publication status	Published - 2000 Oct

ASJC Scopus subject areas

Nuclear and High Energy Physics

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Huber, G. M., Lolos, G. J., Brash, E. J., Dumalski, S., Farzanpay, F., Iurescu, M., Papandreou, Z., Shinozaki, A., Weinerman, A., Emura, T., Hirosawa, H., Niwa, K., Yamashita, H., Maeda, K., Terasawa, T., Yamazaki, H., Endo, S., Miyamoto, K., Sumi, Y., ... Wada, Y. (2000). Probing the ΔNN component of ³He. Physical Review C - Nuclear Physics, 62(4), 440011-440018. [044001].

Probing the ΔNN component of ³He. / Huber, G. M.; Lolos, G. J.; Brash, E. J.; Dumalski, S.; Farzanpay, F.; Iurescu, M.; Papandreou, Z.; Shinozaki, A.; Weinerman, A.; Emura, T.; Hirosawa, H.; Niwa, K.; Yamashita, H.; Maeda, K.; Terasawa, T.; Yamazaki, Hirohito; Endo, S.; Miyamoto, K.; Sumi, Y.; Garino, G.; Maruyama, K.; Leone, A.; Perrino, R.; Maki, T.; Sasaki, A.; Wada, Y.

In: Physical Review C - Nuclear Physics, Vol. 62, No. 4, 044001, 10.2000, p. 440011-440018.

Research output: Contribution to journal › Article › peer-review

Huber, GM, Lolos, GJ, Brash, EJ, Dumalski, S, Farzanpay, F, Iurescu, M, Papandreou, Z, Shinozaki, A, Weinerman, A, Emura, T, Hirosawa, H, Niwa, K, Yamashita, H, Maeda, K, Terasawa, T, Yamazaki, H, Endo, S, Miyamoto, K, Sumi, Y, Garino, G, Maruyama, K, Leone, A, Perrino, R, Maki, T, Sasaki, A & Wada, Y 2000, 'Probing the ΔNN component of ³He', Physical Review C - Nuclear Physics, vol. 62, no. 4, 044001, pp. 440011-440018.

Huber, G. M. ; Lolos, G. J. ; Brash, E. J. ; Dumalski, S. ; Farzanpay, F. ; Iurescu, M. ; Papandreou, Z. ; Shinozaki, A. ; Weinerman, A. ; Emura, T. ; Hirosawa, H. ; Niwa, K. ; Yamashita, H. ; Maeda, K. ; Terasawa, T. ; Yamazaki, Hirohito ; Endo, S. ; Miyamoto, K. ; Sumi, Y. ; Garino, G. ; Maruyama, K. ; Leone, A. ; Perrino, R. ; Maki, T. ; Sasaki, A. ; Wada, Y. / Probing the ΔNN component of ³He. In: Physical Review C - Nuclear Physics. 2000 ; Vol. 62, No. 4. pp. 440011-440018.

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abstract = "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%.",

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

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AU - Huber, G. M.

AU - Lolos, G. J.

AU - Brash, E. J.

AU - Dumalski, S.

AU - Farzanpay, F.

AU - Iurescu, M.

AU - Papandreou, Z.

AU - Shinozaki, A.

AU - Weinerman, A.

AU - Emura, T.

AU - Hirosawa, H.

AU - Niwa, K.

AU - Yamashita, H.

AU - Maeda, K.

AU - Terasawa, T.

AU - Yamazaki, Hirohito

AU - Endo, S.

AU - Miyamoto, K.

AU - Sumi, Y.

AU - Garino, G.

AU - Maruyama, K.

AU - Leone, A.

AU - Perrino, R.

AU - Maki, T.

AU - Sasaki, A.

AU - Wada, Y.

PY - 2000/10

Y1 - 2000/10

N2 - 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%.

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