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Title: Neutrino mean free path in neutron star matter with {delta} isobars

The {delta}-isobar degrees of freedom are taken into account in neutron star matter and their contributions to neutrino mean free paths are evaluated. It is found that the charged-current contributions are comparable to those from the neutral-current reactions. The contributions of {delta}-isobars may be a leading sector of neutrino opacities in neutron star matter, but the effects of the process in which the baryon transforms between nucleon and {delta} are unimportant.
Authors:
; ;  [1] ;  [2] ;  [3]
  1. Center for Astrophysics, University of Science and Technology of China, Hefei, Anhui 230026 (China)
  2. (China)
  3. (China) and Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, Lanzhou Beijing 730000 (China)
Publication Date:
OSTI Identifier:
21293736
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. C, Nuclear Physics; Journal Volume: 79; Journal Issue: 5; Other Information: DOI: 10.1103/PhysRevC.79.055802; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CHARGED CURRENTS; DEGREES OF FREEDOM; MEAN FREE PATH; NEUTRAL CURRENTS; NEUTRINOS; NEUTRON STARS; NUCLEONS; OPACITY