Neutrino amplitude decomposition in matter

Neutrino Interactions in Dense Matter

Neutrino Opacities in Nuclear Matter

Neutrino-matter cross sections and interaction rates are central to the core-collapse supernova phenomenon and, very likely, to the viability of the explosion mechanism itself. In this paper, we describe the major neutrino scattering, absorption, and production processes that together influence the outcome of core collapse and the cooling of protoneutron stars. One focus is on energy redistribu...

Dirac Neutrino Dark Matter

We investigate the possibility that dark matter is made of heavy Dirac neutrinos with mass m ∈ [O(1) GeV– a few TeV] and with suppressed but non-zero coupling to the Standard Model Z as well as a coupling to an additional Z ′ gauge boson. The first part of this paper provides a model-independent analysis for the relic density and direct detection in terms of four main parameters: the mass, the ...

Neutrino Dark Matter

There is a puzzling contradiction: direct observations favor a low-mass density universe, but the only model which fits universe structure over more than three orders of magnitude in distance scale has a mix of hot (neutrino) and cold dark matter constituting a critical density universe. If all present indications for neutrino mass are valid, that hot dark matter is shared by two neutrino speci...

Neutrino Propagation Through Matter

We discuss a simple approach to solve the transport equation for high-energy neutrinos in media of any thickness. We present illustrative results obtained with some specific models for the initial spectra of νμ and νμ propagating through a normal cold medium.