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Effects of momentum-dependent symmetry potential on heavy-ion collisions induced by neutron-rich nuclei

Bao-An Li·Champak B. Das·Subal Das Gupta·Charles Gale
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Abstract

Using an isospin- and momentum-dependent transport model we study effects of the momentum-dependent symmetry potential on heavy-ion collisions induced by neutron-rich nuclei. It is found that symmetry potentials with and without the momentum-dependence but corresponding to the same density-dependent symmetry energy $E_{sym}(ρ)$ lead to significantly different predictions on several $E_{sym}(ρ)$-sensitive experimental observables especially for energetic nucleons. The momentum- and density-dependence of the symmetry potential have to be determined simultaneously in order to extract the $E_{sym}(ρ)$ accurately. The isospin asymmetry of midrapidity nucleons at high transverse momenta is particularly sensitive to the momentum-dependence of the symmetry potential. It is thus very useful for investigating accurately the equation of state of dense neutron-rich matter.

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Bao-An Li, Champak B. Das, Subal Das Gupta, Charles Gale. 2004-02-20. Effects of momentum-dependent symmetry potential on heavy-ion collisions induced by neutron-rich nuclei. https://doi.org/10.1016/j.nuclphysa.2004.02.016

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