Warm Dark Matter Sterile Neutrinos in Electron Capture and Beta Decay Spectra
| Autor: | E. Moya de Guerra, O. Moreno, M. Ramón Medrano |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Nuclear and High Energy Physics
Sterile neutrino Particle physics Cosmology and Nongalactic Astrophysics (astro-ph.CO) Física-Modelos matemáticos Article Subject Electron capture Dark matter FOS: Physical sciences 01 natural sciences High Energy Physics - Phenomenology (hep-ph) 0103 physical sciences Warm dark matter 010303 astronomy & astrophysics Physics 010308 nuclear & particles physics High Energy Physics::Phenomenology Beta decay lcsh:QC1-999 3. Good health High Energy Physics - Phenomenology Isotopes of lead High Energy Physics::Experiment Física nuclear Neutrino lcsh:Physics Lepton Astrophysics - Cosmology and Nongalactic Astrophysics |
| Zdroj: | E-Prints Complutense. Archivo Institucional de la UCM instname E-Prints Complutense: Archivo Institucional de la UCM Universidad Complutense de Madrid Advances in High Energy Physics Advances in High Energy Physics, Vol 2016 (2016) |
| Popis: | We briefly review the motivation to search for sterile neutrinos in the keV mass scale, as dark matter candidates, and the prospects to find them in beta decay or electron capture spectra, with a global perspective. We describe the fundamentals of the neutrino flavor-mass eigenstate mismatch that opens the possibility of detecting sterile neutrinos in such ordinary nuclear processes. Results are shown and discussed for the effect of heavy neutrino emission in electron capture in Holmium 163 and in two isotopes of Lead, 202 and 205, as well as in the beta decay of Tritium. We study the de-excitation spectrum in the considered cases of electron capture and the charged lepton spectrum in the case of Tritium beta decay. For each of these cases, we define ratios of integrated transition rates over different regions of the spectrum under study, and give new results that may guide and facilitate the analysis of possible future measurements, paying particular attention to forbidden transitions in Lead isotopes. 13 pages, 4 figures, 2 tables |
| Databáze: | OpenAIRE |
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