Isospin dependence of nucleon effective masses in neutron-rich matter |
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| Affiliation: | 1. Department of Physics and Astronomy, Texas A&M, University-Commerce, Commerce, TX 75429-3011, USA;2. Department of Physics and Astronomy and Shanghai Key Laboratory for Particle Physics and Cosmology, Shanghai Jiao Tong University, Shanghai 200240, China;3. School of Nuclear Science and Technology, University of South China, Hengyang 421001, China |
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| Abstract: | In this talk, we first briefly review the isospin dependence of the total nucleon effective mass M*J inferred from analyzing nucleon-nucleus scattering data within an isospin-dependent non-relativistic optical potential model, and the isospin dependence of the nucleon E-mass M*;EJ obtained from applying the Migdal–Luttinger theorem to a phenomenological single-nucleon momentum distribution in nuclei constrained by recent electron-nucleus scattering
experiments. Combining information about the isospin dependence of both the nucleon total effective mass and E-mass, we then infer the isospin dependence of nucleon k-mass using the well-known relation M*J =M*;EJ . M*;kJ . Implications of the results on the nucleon mean free path in neutron-rich matter are discussed. |
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| Keywords: | Effective mass Equation of state Symmetry energy Neutron-rich matter |
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