Observation of the Λ7He Hypernucleus by the (e, e′K+) Reaction
- Nakamura, S. N.
- Matsumura, A.
- Okayasu, Y.
- Ševa, Tomislav
- Rodriguez, V. M.
- Baturin, P.
- Yuan, L.
- Acha, A.
- Ahmidouch, A.
- Androić, Darko
- Asaturyan, A.
- Asaturyan, R.
- Baker, O. K.
- Benmokhtar, F.
- Bosted, P.
- Carlini, R.
- Chen, C.
- Christy, M.
- Cole, L.
- Danagoulian, S.
- Daniel, A.
- Dharmawardane, V.
- Egiyan, K.
- Elaasar, M.
- Ent, R.
- Fenker, H.
- Fujii, Y.
- Furić, Miroslav
- Gan, L.
- Gaskell, D.
- Gasparian, A.
- Gibson, E. F.
- Gogami, T.
- Gueye, P.
- Han, Y.
- Hashimoto, O.
- Hiyama, E.
- Honda, D.
- Horn, T.
- Hu, B.
- Hungerford, Ed V.
- Jayalath, C.
- Jones, M.
- Johnston, K.
- Kalantarians, N.
- Kanda, H.
- Kaneta, M.
- Kato, F.
- Kato, S.
- Kawama, D.
- Keppel, C.
- Lan, K. J.
- Luo, W.
- Mack, D.
- Maeda, K.
- Malace, S.
- Margaryan, A.
- Marikyan, G.
- Markowitz, P.
- Maruta, T.
- Maruyama, N.
- Miyoshi, T.
- Mkrtchyan, A.
- Mkrtchyan, H.
- Nagao, S.
- Navasardyan, T.
- Niculescu, G.
- Niculescu, M.-I.
- Nomura, H.
- Nonaka, K.
- Ohtani, A.
- Oyamada, M.
- Perez, N.
- Petković, Tomislav
- Randeniya, S.
- Reinhold, J.
- Roche, J.
- Sato, Y.
- Segbefia, E. K.
- Šimičević, Neven
- Smith, G.
- Song, Y.
- Sumihama, M.
- Tadevosyan, V.
- Takahashi, T.
- Tang, L.
- Tsukada, K.
- Tvaskis, V.
- Vulcan, W.
- Wells, S.
- Wood, S. A.
- Yan, C.
- Zhamkochyan, S.
Publication date
January 2013
DOI Publisher
American Physical Society (APS) Language
EnglishAbstract
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, Λ7He, 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 Λ7He 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
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