Spectroscopy of the neutron-rich hypernucleus HeΛ7 from electron scattering

Gogami, T.; Chen, C.; Kawama, D.; Achenbach, P.; Ahmidouch, A.; Albayrak, I.; Androic, D.; Asaturyan, A.; Asaturyan, R.; Ates, O.; Baturin, P.; Badui, R.; Boeglin, W.; Bono, J.; Brash, E.; Carter, P.; Chiba, A.; Christy, E.; Danagoulian, S.; De Leo, R.; Doi, D.; Elaasar, M.; Ent, R.; Fujii, Y.; Fujita, M.; Furic, M.; Gabrielyan, M.; Gan, L.; Garibaldi, F.; Gaskell, D.; Gasparian, A.; Han, Y.; Hashimoto, O.; Horn, T.; Hu, B.; Hungerford, Ed. V.; Jones, M.; Kanda, H.; Kaneta, M.; Kato, S.; Kawai, M.; Khanal, H.; Kohl, M.; Liyanage, A.; Luo, W.; Maeda, K.; Margaryan, A.; Markowitz, P.; Maruta, T.; Matsumura, A.; Maxwell, V.; Mkrtchyan, A.; Mkrtchyan, H.; Nagao, S.; Nakamura, S. N.; Narayan, A.; Neville, C.; Niculescu, G.; Niculescu, M. I.; Nunez, A.; Nuruzzaman,; Okayasu, Y.; Petkovic, T.; Pochodzalla, J.; Qiu, X.; Reinhold, J.; Rodriguez, V. M.; Samanta, C.; Sawatzky, B.; Seva, T.; Shichijo, A.; Tadevosyan, V.; Tang, L.; Taniya, N.; Tsukada, K.; Veilleux, M.; Vulcan, W.; Wesselmann, F. R.; Wood, S. A.; Yamamoto, T.; Ya, L.; Ye, Z.; Yokota, K.; Yuan, L.; Zhamkochyan, S.; Zhu, L.

doi:10.1103/PhysRevC.94.021302

Title: Spectroscopy of the neutron-rich hypernucleus ${}_{Λ}^{7}{He}$ from electron scattering

Journal Article · Fri Aug 12 00:00:00 EDT 2016 · Physical Review C

DOI:https://doi.org/10.1103/PhysRevC.94.021302· OSTI ID:1294183

Gogami, T.; Chen, C.; Kawama, D.; Achenbach, P.; Ahmidouch, A.; Albayrak, I.; Androic, D.; Asaturyan, A.; Asaturyan, R.; Ates, O.; Baturin, P.; Badui, R.; Boeglin, W.; Bono, J.; Brash, E.; Carter, P.; Chiba, A.; Christy, E.; Danagoulian, S.; De Leo, R. more »

Here, the missing mass spectroscopy of the $$^{7}_{\Lambda}$$He hypernucleus was performed, using the $$^{7}$$Li$$(e,e^{\prime}K^{+})^{7}_{\Lambda}$$He reaction at the Thomas Jefferson National Accelerator Facility Hall C. The $$\Lambda$$ binding energy of the ground state (1/2$$^{+}$$) was determined with a smaller error than that of the previous measurement, being $$B_{\Lambda}$$ = 5.55 $$\pm$$ 0.10(stat.) $$\pm$$ 0.11(sys.) MeV. The experiment also provided new insight into charge symmetry breaking in p-shell hypernuclear systems. Finally, a peak at $$B_{\Lambda}$$ = 3.65 $$\pm$$ 0.20(stat.) $$\pm$$ 0.11(sys.) MeV was observed and assigned as a mixture of 3/2$$^{+}$$ and 5/2$$^{+}$$ states, confirming the "gluelike" behavior of $$\Lambda$$, which makes an unstable state in $$^{6}$$He stable against neutron emission.

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Research Organization:: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP)

Contributing Organization:: HKS (JLab E05-115) Collaboration

Grant/Contract Number:: 12002001; 15684005; 16GS0201; 24.4123; AC05-84ER40150; AC05-06OR23177; FG02-99ER41065; FG02-97ER41047; AC02-06CH11357; FG02-00ER41110; AC02-98CH10886; 013815; 0758095

OSTI ID:: 1294183

Alternate ID(s):: OSTI ID: 1294688

Report Number(s):: JLAB-PHY-16-2306; DOE/OR/23177-3893; arXiv:1606.09157; PRVCAN

Journal Information:: Physical Review C, Vol. 94, Issue 2; ISSN 2469-9985

Publisher:: APSCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 26 works

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Strangeness in nuclear physics Gal, A.; Hungerford, E. V.; Millener, D. J. arXiv https://doi.org/10.48550/arxiv.1605.00557	text	January 2016

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