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Author Raffelt, Georg G.
Source CiteSeerX
Content type Text
File Format PDF
Subject Domain (in DDC) Computer science, information & general works ♦ Data processing & computer science
Subject Keyword Neutrino Mass ♦ Astrophysical Perspective ♦ Current Evidence ♦ Sub-ev Mass Scale ♦ Nrutrino Oscillation ♦ R-process Nucleosynthesis ♦ Neutrino Majorana ♦ Positive Evidence ♦ Cosmic Beam Dump ♦ Neutrino Mass Difference ♦ Current Oscillation Experiment ♦ Ter Asymmetry ♦ Challenging Open Issue ♦ Restrictive Limit ♦ Leptogenesis Scenario ♦ Neutrino-tlriven Wind ♦ Cosmological Context ♦ Neutrino Oscillation ♦ High-energy Neutrino Flux ♦ Atmospheric Neutrino Anomaly ♦ Overall Neutrino Mass Scale ♦ Big-bang Nucleosynthesis ♦ Large Vt Component ♦ Cosmological Structure-formation Argument ♦ Detectable Signal Characteristic ♦ Type Ii Supernova ♦ Large-angle Oscillation ♦ Future Galactic Sn ♦ Oscillation Interpretation ♦ Sterile Neutrino ♦ Significant Modification ♦ Solar Neutrino Problem
Abstract The role of neutrino masses and mixing in the astrophysical and cosmological context is reviewed. If neutrino mass differences are indeed as small as suggested by the current evidence for neutrino oscillations (Am, < 1 eV), the overall neutrino mass scale in scenarios of degenerat,e neutrino masses is the most challenging open issue. Cosmological structure-formation arguments will continue to provide the most restrictive limits unless neutrinoless $,9 experiments find positive evidence for a sub-eV mass scale. Neutrino Majorana masses in the range suggested by current oscillation experiments are fundamentally important in leptogenesis scenarios for creating the matter-antimat,ter asymmetry of the universe. The existence of a sterile neutrino, as suggested by the current evidence for nrutrino oscillations, could affect big-bang nucleosynthesis as well as r-process nucleosynthesis in the neutrino-tlriven wind of type II supernovae. If the solar neutrino problem is explained by large-angle oscillations, a significant modification of the detectable signal characteristics of a future galactic SN is inevitable. The oscillation interpretation of the atmospheric neutrino anomaly suggests that the high-energy neutrino fluxes expected from cosmic beam dumps will have a large vT component. 1.
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research
Education Level UG and PG ♦ Career/Technical Study