Overview of hypernuclear physics program at K1.8 and K1.1 beam lines of J-PARC

Two experiments to search for Θ+ (E19) and K−pp bound states (E27) have been carried out so far at K1.8 beam line of J-PARC Hadron Facility. No peak structure was observed in the E19 first run at 1.92 GeV/c. Three experiments, spectroscopy of a neutron-rich hypernucleus, 6ΛH (E10), γ-ray spectroscopy of 19ΛF and 4ΛHe (E13) at K1.8 and another search for K−pp bound system (E15) at K1.8BR, are scheduled by summer 2013. Experiments on Λ hypernuclei will be carried out at a newly constructed K1.1 beam line with SKS, while S=−2 physics will be conducted at K1.8 beam line after 2014. Future plan of Hadron Hall extension under consideration is briefly reported.