{ "id": "nucl-th/0312054", "version": "v2", "published": "2003-12-15T22:25:48.000Z", "updated": "2004-02-20T16:33:39.000Z", "title": "Effects of momentum-dependent symmetry potential on heavy-ion collisions induced by neutron-rich nuclei", "authors": [ "Bao-An Li", "Champak B. Das", "Subal Das Gupta", "Charles Gale" ], "comment": "The version to appear in Nucl. Phys. A. A paragraph and a figure on neutron and proton effective masses in neutron-rich matter are added", "journal": "Nucl.Phys.A735:563-584,2004", "doi": "10.1016/j.nuclphysa.2004.02.016", "categories": [ "nucl-th", "nucl-ex" ], "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 $E_{sym}(\\rho)$ lead to significantly different predictions on several $E_{sym}(\\rho)$-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 $E_{sym}(\\rho)$ 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.", "revisions": [ { "version": "v2", "updated": "2004-02-20T16:33:39.000Z" } ], "analyses": { "subjects": [ "25.70.-z", "25.70.Pq", "24.10.Lx" ], "keywords": [ "momentum-dependent symmetry potential", "heavy-ion collisions", "neutron-rich nuclei", "dense neutron-rich matter", "density-dependent symmetry energy" ], "tags": [ "journal article" ], "publication": { "publisher": "Elsevier", "journal": "Nucl. Phys. A" }, "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable", "inspire": 635721 } } }