Speaker
Description
Fifteen years have passed since the “hyperon puzzle” in neutron stars was raised, but it remains unsolved yet. Various experimental efforts have been and will be made to investigate hyperon-nucleon interactions in dense nuclear matter. Ξ hypernuclei as well as Λ hypernuclei have been intensively studied at J-PARC, clarifying an attractive Ξ-N interaction. High-quality Σ-N scattering experiments have been also realized, being followed by high-quality Λ-N scattering experiments, both of which will play essential roles to construct realistic YN interaction models. Then, high-precision Λ hypernuclear spectroscopy experiments for a wide range of mass number will be conducted at JLab and then at J-PARC in order to extract the strength of ΛNN three-body interaction, key information to solve the hyperon puzzle.