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Title: Density dependence of the nuclear symmetry energy from measurements of neutron radii in nuclei

We study the density dependence of the nuclear symmetry energy, characterized by its slope parameter L, by means of the information provided by the neutron radius and the neutron skin thickness in finite nuclei. These quantities are extracted from the analysis of data obtained in antiprotonic atoms, from the parity-violating asymmetry at low-momentum transfer in polarized electron scattering in {sup 208}Pb, and from the electric dipole polarizability obtained via polarized proton inelastic scattering at forward angles in {sup 208}Pb. All these experiments provide different constraints on the slope L of the symmetry energy but the corresponding values have a considerable overlap in a range around 50 MeV ≤ L ≤ 70 MeV, in a reasonable agreement with other estimates that use different observables and methods to extract L.
Authors:
;  [1] ;  [2] ;  [3]
  1. Departament d'Estructura i Constituents de la Matèria and Institut de Ciències del Cosmos, Facultat de Física, Universitat de Barcelona, Martí i Franquès 1, 08028 Barcelona (Spain)
  2. Dipartimento di Fisica, Università degli Studi di Milano and INFN, Sezione di Milano, I-20133 Milano (Italy)
  3. Katedra Fizyki Teoretycznej, Uniwersytet Marii Curie–Skłodowskiej ul. Radziszewskiego 10, 20-031 Lublin (Poland)
Publication Date:
OSTI Identifier:
22306057
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1606; Journal Issue: 1; Conference: 2. Russian-Spanish congress on particle and nuclear physics at all scales, astroparticle physics and cosmology, St. Petersburg (Russian Federation), 1-4 Oct 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ASYMMETRY; DATA ANALYSIS; ELECTRIC DIPOLE MOMENTS; ELECTRIC DIPOLES; ELECTRONS; HADRONIC ATOMS; INELASTIC SCATTERING; INFORMATION; LEAD 208; LIMITING VALUES; MEV RANGE 10-100; MOMENTUM TRANSFER; NEUTRONS; PARITY; PROTONS; SKIN; SYMMETRY