Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2016, Vol. 27 ›› Issue (6): 141 doi: 10.1007/s41365-016-0140-4

Special Issue: Special Section on International Workshop on Nuclear Dynamics in Heavy-Ion Reaction (IWND2016)

• Special Section on International Workshop on Nuclear Dynamics in Heavy-Ion Reaction (IWND2016) • Previous Articles     Next Articles

Isospin dependence of nucleon effective masses in neutron-rich matter

Bao-An Li 1, Bao-Jun Cai 1, Lie-Wen Chen 2, Xiao-Hua Li3   

  1. 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
  • Contact: Bao-An.Li
  • Supported by:

    This work was supported in part by the US Department of Energy’s Office of Science under Award Number DE-SC0013702; the CUSTIPEN (China-US Theory Institute for Physics with Exotic Nuclei) under the US Department of Energy Grant No. DESC0009971; the National Natural Science Foundation of China Under Grant Nos. 11320101004, 11275125, 11205083 and 11135011; the Major State Basic Research Development Program (973 Program) in China under Contract Nos. 2013CB834405 and 2015CB856904; the ‘‘Shu Guang’’ project supported by Shanghai Municipal Education Commission and Shanghai Education Development Foundation; the Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning, the Science and Technology Commission of Shanghai Municipality (11DZ2260700); the construct program of the key discipline in Hunan province, the Research Foundation of Education Bureau of Hunan Province, China (Grant No. 15A159); the Natural Science Foundation of Hunan Province, China (Grant No. 2015JJ3103); and the Innovation Group of Nuclear and Particle Physics in USC.

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Bao-An Li, Bao-Jun Cai, Lie-Wen Chen, Xiao-Hua Li. Isospin dependence of nucleon effective masses in neutron-rich matter.Nuclear Science and Techniques, 2016, 27(6): 141     doi: 10.1007/s41365-016-0140-4


In this talk, we first briefly review the isospin dependence of the total nucleon effective mass MJ 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 MJ=M∗,EJ⋅M∗,kJ . Implications of the results on the nucleon mean free path in neutron-rich matter are discussed.

Key words: Effective mass, Equation of state, Symmetry energy, Neutron-rich matter