Study of Light Hypernuclei by the (e,e′K +) Reaction

Abstract

We have been performing Λ hypernuclear spectroscopic experiments by the (e,e′K+) reaction since 2000 at Thomas Jefferson National Accelerator Facility (JLab). The (e,e′K+) experiment can achieve a few 100 keV (FWHM) energy resolution compared to a few MeV (FWHM) by the (K−, π−) and (π+, K+) experiments. Therefore, more precise Λ hypernuclear structures can be investigated by the (e,e′K+) experiment. \({^{7}_{\Lambda}{\rm He}}\), \({^{9}_{\Lambda}{\rm Li}}\), \({^{10}_{\Lambda}{\rm Be}}\), \({^{12}_{\Lambda}{\rm B}}\), \({^{28}_{\Lambda}{\rm Al}}\), and \({^{52}_{\Lambda}{\rm V}}\) were measured in the experiment at JLab Hall-C. In addition, \({^{9}_{\Lambda}{\rm Li}}\) , \({^{12}_{\Lambda}{\rm B}}\), and \({^{16}_{\Lambda}{\rm N}}\) were measured in the experiment at JLab Hall-A.