Neutron–proton effective mass splitting in neutron-rich matter at normal density from analyzing nucleon–nucleus scattering data within an isospin dependent optical model

Li, Xiao-Hua; Guo, Wen-Jun; Li, Bao-An; Chen, Lie-Wen; Fattoyev, Farrukh J.; Newton, William G.

doi:10.1016/j.physletb.2015.03.005

Title: Neutron–proton effective mass splitting in neutron-rich matter at normal density from analyzing nucleon–nucleus scattering data within an isospin dependent optical model

Journal Article · Wed Apr 01 00:00:00 EDT 2015 · Physics Letters. B

DOI:https://doi.org/10.1016/j.physletb.2015.03.005· OSTI ID:1198541

Li, Xiao-Hua; Guo, Wen-Jun; Li, Bao-An; Chen, Lie-Wen; Fattoyev, Farrukh J.; Newton, William G.

The neutron–proton effective mass splitting in asymmetric nucleonic matter of isospin asymmetry δ and normal density is found to be m*_n-p≡(m*_n – m*_p)/m = (0.41 ± 0.15)δ from analyzing globally 1088 sets of reaction and angular differential cross sections of proton elastic scattering on 130 targets with beam energies from 0.783 MeV to 200 MeV, and 1161 sets of data of neutron elastic scattering on 104 targets with beam energies from 0.05 MeV to 200 MeV within an isospin dependent non-relativistic optical potential model. It sets a useful reference for testing model predictions on the momentum dependence of the nucleon isovector potential necessary for understanding novel structures and reactions of rare isotopes.

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

Sponsoring Organization:: USDOE

Grant/Contract Number:: FG02-13ER42025; SC0009971; PHY-1068022; NNX11AC41G; 11047157; 11205083; 11275125; 11135011; 11320101004; 2015CB856904; 2013CB834405; 11QH1401100; 11DZ2260700

OSTI ID:: 1198541

Alternate ID(s):: OSTI ID: 1188774

Journal Information:: Physics Letters. B, Journal Name: Physics Letters. B Vol. 743 Journal Issue: C; ISSN 0370-2693

Publisher:: ElsevierCopyright Statement

Country of Publication:: Netherlands

Language:: English

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Cited by: 56 works

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