Speaker
Description
The hyperon-nucleon interactions are fundamental information to describe many-body nucleon systems containing hyperons, such as hypernuclei and neutron stars.
By extending the nuclear force to baryon-baryon interactions, we also can understand the nuclear force as the interaction between quark clusters, because new aspects of baryon-baryon interaction are expected to appear especially at short the distance in hyperon-nucleon and hyperon-hyperon interactions.
Now, new attempts to describe the hyperon-nucleon interactions within the chiral effective field theory framework.
In order to make such interaction theories more realistic, more hyperon-proton scattering data are necessary.
In J-PARC, we succeeded in providing new and accurate Sigma proton scattering data for three different channels.
These new data are now used to constrain the theoretical models.
Then, we are now planning to derive differential cross sections and spin observables of Lambda proton scattering experiments at SPring-8 and J-PARC.
In addition, a collaborative work between Lattice QCD calculation and Sigma N cusp measurement is ongoing to reveal the full picture of the Lambda N interaction.
In this presentation, I will review the achievements so far and introduce the new projects to understand the LambdaN interaction.