Microscopic optical potential from chiral effective field theory

2019/11/15 by T. R. Whitehead, Whitehead, T. R., Y. Lim +3
Physics and Astronomy · #Nuclear physics research studies #Quantum, superfluid, helium dynamics #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.1911.08301

Abstract

We formulate a microscopic optical potential from chiral two- and three-body forces. The real and imaginary central terms of the optical potential are obtained from the nucleon self-energy in infinite matter, while the real spin-orbit term is extracted from a nuclear energy density functional constructed from the density matrix expansion using the same chiral potential. The density-dependent optical potential is then folded with the nuclear density distributions for selected Calcium isotopes resulting in energy-dependent nucleon-nucleus optical potentials from which we study proton-nucleus elastic scattering cross sections calculated using the TALYS reaction code. We compare the results of the microscopic calculations to phenomenological models and experimental data.

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