Neutrino mean free path in asymmetric nuclear matter at high density

Journal Article · Tue Oct 01 04:00:00 EDT 1996 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.54.2031· OSTI ID:385844

Fabbri, G; Matera, F ^[1]

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1. Dipartimento di Fisica, Universita degli Studi di Firenze and Istituto Nazionale di Fisica Nucleare, Sezione di Firenze, L.go E. Fermi 2, I-50125, Firenze (Italy)

We calculate the neutrino mean free path for neutrino-nucleon scattering in highly asymmetric nuclear matter ({ital N}{gt}{ital Z}) at densities typical for the core of a neutron star. Nuclear matter is described by means of a relativistic field theory of nucleons coupled to neutral, scalar ({sigma}), and vector ({omega}) mesons and to charged vector mesons ({ital d}). The correlation effects induced by the strong interaction of nucleons are taken into account within a self-consistent mean field approximation. The contribution of the exchange terms to the nucleon-nucleon interaction is also included. We present results for physical situations which are expected to occur in the cooling of neutron stars. Exchange terms have the effect of increasing the neutrino mean free path by about 50{percent}. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 385844
• Journal Information: Physical Review, C, Journal Name: Physical Review, C Journal Issue: 4 Vol. 54; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CHARGED PARTICLES
COOLING
DENSITY
MEAN FREE PATH
NEUTRAL PARTICLES
NEUTRINO-NUCLEON INTERACTIONS
NEUTRINOS
NEUTRON STARS
NUCLEAR MATTER
NUCLEON-NUCLEON INTERACTIONS
SCALAR MESONS
SELF-CONSISTENT FIELD
VECTOR MESONS