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Prospects for cosmic neutrino detection in tritium experiments in the case of hierarchical neutrino masses
2008 (English)In: Physical Review D, ISSN 1550-7998, Vol. 77, no 11, 113014- p.Article in journal (Refereed) Published
Abstract [en]

We discuss the effects of neutrino mixing and the neutrino mass hierarchy when considering the capture of the cosmic neutrino background (CNB) on radioactive nuclei. The implications of mixing and hierarchy at future generations of tritium decay experiments are considered. We find that the CNB should be detectable at these experiments provided that the resolution for the kinetic energy of the outgoing electron can be pushed to a few 0.01 eV for the scenario with inverted neutrino mass hierarchy, about an order of magnitude better than that of the upcoming KATRIN experiment. Another order of magnitude improvement is needed in the case of normal neutrino mass hierarchy. We also note that mixing effects generally make the prospects for CNB detection worse due to an increased maximum energy of the normal beta decay background.

Place, publisher, year, edition, pages
2008. Vol. 77, no 11, 113014- p.
National Category
Subatomic Physics
URN: urn:nbn:se:kth:diva-107151DOI: 10.1103/PhysRevD.77.113014ISI: 000257290300022OAI: diva2:574766

QC 20130513

Available from: 2012-12-06 Created: 2012-12-06 Last updated: 2013-05-13Bibliographically approved

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Blennow, Mattias
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