Electroweak interactions in a relativistic Fermi gas
Abstract
We present a relativistic model for computing the neutrino mean free path in neutron matter. Thereby, neutron matter is described as a non-interacting Fermi gas in beta-equilibrium. We present results for the neutrino mean free path for temperatures from 0 up to 50 MeV and a broad range of neutrino energies. We show that relativistic effects cause a considerable enhancement of neutrino-scattering cross-sections in neutron matter. The influence of the -dependence in the electroweak form factors and the inclusion of a weak magnetic term in the hadron current is discussed. The weak-magnetic term in the hadron current is at the origin of some selective spin dependence for the nucleons which are subject to neutrino interactions.
Cite
@article{arxiv.nucl-th/0602045,
title = {Electroweak interactions in a relativistic Fermi gas},
author = {K. Vantournhout and N. Jachowicz and J. Ryckebusch},
journal= {arXiv preprint arXiv:nucl-th/0602045},
year = {2008}
}
Comments
11 pages, 7 figures, accepted to Phys. Rev. C, minor changes and updates of the figures are made