Study of density dependent nuclear symmetry energy by using heavy RI collisions at RIKEN-RIBF

The nuclear Equation of State (EoS) is a fundamental property of nuclear matter. An international collaboration, named SPiRIT, to study the density dependence of asymmetry term in nuclear EoS has been formed since 2009. The main aim of this collaboration is to make the constraint on the asymmetry term of nuclear EoS for higher dense region($\rho>\rho_0$).
In this talk, the conceptual idea of the project will be given in addition to some result of data analysis for the physics run performed at 2016 spring.