Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2006-02-14
Phys.Rev.C74:035501,2006
Physics
Nuclear Physics
Nuclear Theory
11 pages, 7 figures, accepted to Phys. Rev. C, minor changes and updates of the figures are made
Scientific paper
10.1103/PhysRevC.74.035501
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 $Q^2$-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.
Jachowicz Natalie
Ryckebusch Jan
Vantournhout Klaas
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