High resolution spectroscopic study ofBeΛ10

• DOI: 10.1103/physrevc.93.034314
• Publication Date: 2016-03-21T07:16:49Z
• Authors: T. Gogami; C. Chen; D. Kawama; P. Achenbach; A. Ahmidouch; I. Albayrak; D. Androic; A. Asaturyan; R. Asaturyan; O. Ates; P. Baturin; R. Badui; W. Boeglin; J. Bono; E. Brash; P. Carter; A. Chiba; E. Christy; S. Danagoulian; R. De Leo; D. Doi; M. Elaasar; R. Ent; Y. Fujii; M. Fujita; M. Furic; M. Gabrielyan; L. Gan; F. Garibaldi; D. Gaskell; A. Gasparian; Y. Han; O. Hashimoto; T. Horn; B. Hu; Ed. V. Hungerford; M. Jones; H. Kanda; M. Kaneta; S. Kato; M. Kawai; H. Khanal; M. Kohl; A. Liyanage; W. Luo; K. Maeda; A. Margaryan; P. Markowitz; T. Maruta; A. Matsumura; V. Maxwell; A. Mkrtchyan; H. Mkrtchyan; S. Nagao; S. N. Nakamura; A. Narayan; C. Neville; G. Niculescu; M. I. Niculescu; A. Nunez; Nuruzzaman; Y. Okayasu; T. Petkovic; J. Pochodzalla; X. Qiu; J. Reinhold; V. M. Rodriguez; C. Samanta; B. Sawatzky; T. Seva; A. Shichijo; V. Tadevosyan; L. Tang; N. Taniya; K. Tsukada; M. Veilleux; W. Vulcan; F. R. Wesselmann; S. A. Wood; T. Yamamoto; L. Ya; Z. Ye; K. Yokota; L. Yuan; S. Zhamkochyan; L. Zhu
• Keywords: 0103 physical sciences; 01 natural sciences

Spectroscopy of a Be-10(Lambda) hypernucleus was carried out at JLab Hall C using the (e, e' 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 similar to 0.78 MeV (FWHM). The well-calibrated spectrometer system of the present experiment using p(e, e' 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 found to be B-Lambda = 8.55 +/- 0.07(stat.) +/- 0.11(sys.) MeV. 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 the charge symmetry breaking effect in the Lambda N interaction.