Nucleon effective E-mass in neutron-rich matter from the Migdal–Luttinger jump

Cai, Bao-Jun; Li, Bao-An

doi:10.1016/j.physletb.2016.03.059

Title: Nucleon effective E-mass in neutron-rich matter from the Migdal–Luttinger jump

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Abstract

The well-known Migdal-Luttinger theorem states that the jump of the single-nucleon momentum distribution at the Fermi surface is equal to the inverse of the nucleon effective E-mass. Recent experiments studying short-range correlations (SRC) in nuclei using electron-nucleus scatterings at the Jefferson National Laboratory (JLAB) together with model calculations constrained significantly the Migdal-Luttinger jump at saturation density of nuclear matter. We show that the corresponding nucleon effective E-mass is consequently constrained to M-0(*,E)/M approximate to 2.22 +/- 0.35 in symmetric nuclear matter (SNM) and the E-mass of neutrons is smaller than that of protons in neutron-rich matter. Moreover, the average depletion of the nucleon Fermi sea increases (decreases) approximately linearly with the isospin asymmetry delta according to kappa(p/n) approximate to 0.21 +/- 0.06 +/- (0.19 +/- 0.08)delta for protons (neutrons). These results will help improve our knowledge about the space-time non-locality of the single-nucleon potential in neutron-rich nucleonic matter Useful in both nuclear physics and astrophysics. (C) 2016 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP(3).

Authors:: Cai, Bao-Jun; Li, Bao-An

Publication Date:: Wed Jun 01 00:00:00 EDT 2016

Research Org.:: Texas A&M Univ. Commerce, TX (United States)

Sponsoring Org.:: USDOE Office of Science (SC)

OSTI Identifier:: 1244585

Alternate Identifier(s):: OSTI ID: 1280656

Grant/Contract Number:: SC0013702

Resource Type:: Published Article

Journal Name:: Physics Letters B

Additional Journal Information:: Journal Name: Physics Letters B Journal Volume: 757 Journal Issue: C; Journal ID: ISSN 0370-2693

Publisher:: Elsevier

Country of Publication:: Netherlands

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; heavy-ion collisions; correlated fermi gas; high-momentum components; level density parameter; symmetry energy; mean-field; isospin physics; scattering data; optical-model; state

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                    Cai, Bao-Jun, and Li, Bao-An. Nucleon effective E-mass in neutron-rich matter from the Migdal–Luttinger jump.  Netherlands: N. p., 2016. 
Web.  doi:10.1016/j.physletb.2016.03.059.

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                    Cai, Bao-Jun, & Li, Bao-An. Nucleon effective E-mass in neutron-rich matter from the Migdal–Luttinger jump.  Netherlands.  https://doi.org/10.1016/j.physletb.2016.03.059

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                    Cai, Bao-Jun, and Li, Bao-An. Wed .  
"Nucleon effective E-mass in neutron-rich matter from the Migdal–Luttinger jump".  Netherlands.  https://doi.org/10.1016/j.physletb.2016.03.059.

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@article{osti_1244585,

  title        = {Nucleon effective E-mass in neutron-rich matter from the Migdal–Luttinger jump},

  author       = {Cai, Bao-Jun and Li, Bao-An},

  abstractNote = {The well-known Migdal-Luttinger theorem states that the jump of the single-nucleon momentum distribution at the Fermi surface is equal to the inverse of the nucleon effective E-mass. Recent experiments studying short-range correlations (SRC) in nuclei using electron-nucleus scatterings at the Jefferson National Laboratory (JLAB) together with model calculations constrained significantly the Migdal-Luttinger jump at saturation density of nuclear matter. We show that the corresponding nucleon effective E-mass is consequently constrained to M-0(*,E)/M approximate to 2.22 +/- 0.35 in symmetric nuclear matter (SNM) and the E-mass of neutrons is smaller than that of protons in neutron-rich matter. Moreover, the average depletion of the nucleon Fermi sea increases (decreases) approximately linearly with the isospin asymmetry delta according to kappa(p/n) approximate to 0.21 +/- 0.06 +/- (0.19 +/- 0.08)delta for protons (neutrons). These results will help improve our knowledge about the space-time non-locality of the single-nucleon potential in neutron-rich nucleonic matter Useful in both nuclear physics and astrophysics. (C) 2016 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP(3).},

  doi          = {10.1016/j.physletb.2016.03.059},

  journal      = {Physics Letters B},

  number       = C,

  volume       = 757,

  place        = {Netherlands},

  year         = {Wed Jun 01 00:00:00 EDT 2016},

  month        = {Wed Jun 01 00:00:00 EDT 2016}

}

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