EXA2011

Lambda hypernucleus which contains s-quark in addition to normal u, d-quarks, is a powerful tool to study baryon interaction and structure of deep inside of nucleus. In 80-90s, experiments of Lambda hypernuclei with meson beams were intensively performed at BNL and KEK. Thanks to a high quality electron beam at JLab CEBAF, the study of hypernuclei with an electron beam started in 2000. This pilot experiment proved that it is possible to use electron beam to study hypernuclei, but many experimental challenges should be overcome to explore full potential of this method. In this decade, many experimental improvements have been introduced and hypernuclear spectroscopy by the (e,e'K+) reaction is now established at JLab. I will overview a brief history of the hypernuclear study at JLab and give a prospect of future plans.