International Workshop on Multi-facets of EOS and Clustering

Constraints on the symmetry energy at supra-saturation density from Pion Spectral Ratios

24 nov. 2021, 15:25

25m

Maison d'hôtes (GANIL, Caen)

Regular talk (remote) Constraints on the symmetry energy supra-saturation density from Pion Spectral Ratios Isospin Effects and EoS in nuclear reactions

Orateur

Dr LYNCH, William (NSCL/FRIB Dept. of Physics and Astronomy Michigan State Univ., USA)

Description

Pion spectral ratios and double ratios are measured for neutron rich 132Sn+124Sn and neutron deficient 108Sn+112Sn collisions. Both pi-/Pi+ single spectral ratios for the two systems and double ratios obtained by combining both systems can be described by a dcQMD calculations. These comparisons provide a correlated constraint on L and on the neutron-proton effect mass difference. This represents a step forward towards constraining the symmetry energy at supra-saturation densities with pion production. Future steps to better constrain the symmetry energy at supra-saturation densities will be discussed.