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Title: High resolution spectroscopic study of BeΛ10

Spectroscopy of a $$^{10}_{\Lambda}$$Be hypernucleus was carried out at JLab Hall C using the $$(e,e^{\prime}K^{+})$$ reaction. A new magnetic spectrometer system (SPL+HES+HKS), specifically designed for high resolution hypernuclear spectroscopy, was used to obtain an energy spectrum with a resolution of 0.78 MeV (FWHM). The well-calibrated spectrometer system of the present experiment using the $$p(e,e^{\prime}K^{+})\Lambda,\Sigma^{0}$$ reactions allowed us to determine the energy levels, and the binding energy of the ground state peak (mixture of 1$$^{-}$$ and 2$$^{-}$$ states) was obtained to be B$$_{\Lambda}$$=8.55$$\pm$$0.07(stat.)$$\pm$$0.11(sys.) MeV. Furthermore, the result indicates that the ground state energy is shallower than that of an emulsion study by about 0.5 MeV which provides valuable experimental information on charge symmetry breaking effect in the $$\Lambda N$$ interaction.
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Publication Date:
OSTI Identifier:
1242487
Report Number(s):
JLAB-PHY--16-2227; DOE/OR/23177--3776; arXiv:1511.04801
Journal ID: ISSN 2469-9985; PRVCAN
Grant/Contract Number:
12002001; 15684005; 16GS0201; 244123; 21002; AC05-84ER40150; AC05-06OR23177; FG02-99ER41065; FG02-97ER41047; AC02-06CH11357; FG02-00ER41110; AC02-98CH10886; 013815; 0758095
Type:
Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 93; Journal Issue: 3; Journal ID: ISSN 2469-9985
Publisher:
APS
Research Org:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
Contributing Orgs:
HKS(JLab E05-115) Collaboration
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY