Observation of the HeΛ7 hypernucleus by the (e, e K+) reaction

S. N. Nakamura, A. Matsumura, Y. Okayasu, T. Seva, V. M. Rodriguez, P. Baturin, L. Yuan, A. Acha, A. Ahmidouch, D. Androic, A. Asaturyan, R. Asaturyan, O. K. Baker, F. Benmokhtar, P. Bosted, R. Carlini, C. Chen, M. Christy, L. Cole, S. DanagoulianA. Daniel, V. Dharmawardane, K. Egiyan, M. Elaasar, R. Ent, H. Fenker, Y. Fujii, M. Furic, L. Gan, D. Gaskell, A. Gasparian, E. F. Gibson, T. Gogami, P. Gueye, Y. Han, O. Hashimoto, E. Hiyama, D. Honda, T. Horn, B. Hu, Ed V. Hungerford, C. Jayalath, M. Jones, K. Johnston, N. Kalantarians, H. Kanda, M. Kaneta, F. Kato, S. Kato, D. Kawama, C. Keppel, K. J. Lan, W. Luo, D. MacK, K. Maeda, S. Malace, A. Margaryan, G. Marikyan, P. Markowitz, T. Maruta, N. Maruyama, T. Miyoshi, A. Mkrtchyan, H. Mkrtchyan, S. Nagao, T. Navasardyan, G. Niculescu, M. I. Niculescu, H. Nomura, K. Nonaka, A. Ohtani, M. Oyamada, N. Perez, T. Petkovic, S. Randeniya, J. Reinhold, J. Roche, Y. Sato, E. K. Segbefia, N. Simicevic, G. Smith, Y. Song, M. Sumihama, V. Tadevosyan, T. Takahashi, L. Tang, K. Tsukada, V. Tvaskis, W. Vulcan, S. Wells, S. A. Wood, C. Yan, S. Zhamkochyan

研究成果: Article査読

60 被引用数 (Scopus)

抄録

An experiment with a newly developed high-resolution kaon spectrometer and a scattered electron spectrometer with a novel configuration was performed in Hall C at Jefferson Lab. The ground state of a neutron-rich hypernucleus, HeΛ7, was observed for the first time with the (e, e K+) reaction with an energy resolution of ∼0.6 MeV. This resolution is the best reported to date for hypernuclear reaction spectroscopy. The HeΛ7 binding energy supplies the last missing information of the A=7, T=1 hypernuclear isotriplet, providing a new input for the charge symmetry breaking effect of the ΛN potential.

本文言語English
論文番号012502
ジャーナルPhysical review letters
110
1
DOI
出版ステータスPublished - 2013 1 2

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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