Disentangling effects of collision geometry and symmetry energy in U+U collisions

Abstract

Effects of the collision geometry on experimental observables that are known to be sensitive to the high-density behavior of nuclear symmetry energy are examined in U+U collisions at 0.52 GeV/nucleon using an isospin- and momentum-dependent interaction within the framework of IBUU transport model. It is found that the neutron-proton differential flow in tip-tip collisions and the difference of neutron and proton elliptic flow in body-body collisions are more sensitive to the symmetry energy at supra-saturation densities compared with collisions of spherical nuclei of the same masses. In addition, the n/p ratio of pre-equilibrium nucleons is found to be slightly more sensitive to the symmetry energy in tip-tip collisions, and the collision geometry affects the π^-/π^+ ratio significantly.

7 pages, 5 figures, 4 tables, minor modifications

References in corpus (14)

• Neutron Star Observations: Prognosis for Equation of State Constraints
• 200 A GeV Au+Au collisions serve a nearly perfect quark-gluon liquid
• Symmetry energy from elliptic flow in 197Au + 197Au
• Nuclear symmetry energy and its density slope at normal density extracted from global nucleon optical potentials
• Testing the Chiral Magnetic Effect with Central U+U collisions
• Nuclear skin emergence in Skyrme deformed Hartree-Fock calculations
• Elliptic flow in U+U collisions at sqrt{s_{NN}} = 200 GeV and in Pb+Pb collisions at sqrt{s_{NN}} = 2.76 TeV: Prediction from a hybrid approach
• Temperature effects on the nuclear symmetry energy and symmetry free energy with an isospin and momentum dependent interaction
• Effects of isospin and momentum dependent interactions on thermal properties of asymmetric nuclear matter
• Effects of isospin and momentum dependent interactions on liquid-gas phase transition in hot asymmetric nuclear matter
• A systematic study of the ${\pi }^{-}/{\pi }^{+}$ ratio in heavy-ion collisions with the same neutron/proton ratio but different masses
• Deformation parameter for diffuse density
• Density matrix expansion for the MDI interaction
• Stopping effects in U+U collisions with a beam energy of 520 MeV/nucleon

Cited by in corpus (1)

• Elimination of influence of neutron-skin size difference of initial colliding nuclei in Pb+Pb collisions