Impact of medium modification of the nucleon weak and electromagnetic form factors on the neutrino mean free path in dense matter

Abstract

Impact of the in-medium modified nucleon weak and electromagnetic form factors on the neutrino mean free path in dense matter is studied by considering both the weak and electromagnetic interactions of neutrinos with the constituents of the matter. A relativistic mean field model and the quark-meson coupling model are respectively adopted for the in-medium effective nucleon mass and nucleon form factors. We find that the cross sections of neutrino scattering in cold nuclear medium decreases when the in-medium modification of the nucleon weak and electromagnetic form factors are taken into account. This reduction results in the enhancement of the neutrino mean free path, in particular at the baryon density of around a few times of the normal nuclear matter density. The enhancement of the neutrino mean free path is estimated to be about 10--40\% compared with the values obtained without the medium modification of the nucleon form factors, and the enhancement is expected to accelerate the cooling of neutron stars.

arXiv commentREVTeX, 12 pages, to be published in PRD

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• Effect of nucleon effective mass and symmetry energy on the neutrino mean free path in a neutron star
• Electroweak properties of kaons in a nuclear medium
• Electroweak form factors of baryons in dense nuclear matter
• Implications of PREX--2 data on the electron--neutrino opacity in dense matter
• Effects of medium modifications of nucleon form factors on neutrino scattering in dense matter
• Neutrino propagation in the neutron star with uncertainties from nuclear, hadron, and particle physics
• The Role of the Neutrino Form Factors in the Energy Loss Rates of Pair Annihilation Process
• Antineutrino Opacity in Neutron Stars in the Models Constrained by Recent Terrestrial Experiments and Astrophysical Observations
• Pion structure in a nuclear medium
• Stellar Energy Loss Rates from Photoneutrino Process in Minimal Extension Standard Model
• Neutrino mean free path in neutron stars in the presence of hyperons