4.8 Article

Observation of the Λ7 He Hypernucleus by the (e, e′K+) Reaction

Journal

PHYSICAL REVIEW LETTERS
Volume 110, Issue 1, Pages -

Publisher

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.110.012502

Keywords

-

Funding

  1. Japan-MEXT [16GS0201, 15684005, 12002001, 08239102, 09304028, 09554007, 11440070, 15204014]
  2. Japan-U.S. collaborative research program
  3. core-to-core program [21002]
  4. JSPS [R2201]
  5. U.S.-DOE [DE-AC05-84ER40150, DE-FG02-99ER41065, DE-FG02-97ER41047, DE-AC02-06CH11357, DE-FG02-00ER41110, DE-AC02-98-CH10886]
  6. U.S.-NSF [013815, 0758095]
  7. Direct For Mathematical & Physical Scien
  8. Division Of Physics [1019521, 1206056, 855578] Funding Source: National Science Foundation
  9. Direct For Mathematical & Physical Scien
  10. Division Of Physics [1206043, 0758095] Funding Source: National Science Foundation
  11. Grants-in-Aid for Scientific Research [09304028, 11440070, 20105003, 08239102, 16GS0201, 15684005, 11J56062, 24105003, 09554007, 12002001, 15204014] Funding Source: KAKEN

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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, (7)(Lambda) He, was observed for the first time with the (e, e' K+) reaction with an energy resolution of similar to 0.6 MeV. This resolution is the best reported to date for hypernuclear reaction spectroscopy. The (7)(Lambda) He 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 Lambda N potential. DOI: 10.1103/PhysRevLett.110.012502

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