Three-generation neutrino mixing and LSND dark matter neutrinos

Christian Y. Cardall; George M. Fuller

doi:10.1016/S0920-5632(96)00510-5

Three-generation neutrino mixing and LSND dark matter neutrinos

Christian Y. Cardall, George M. Fuller

Theoretical and Computational Physics

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

Abstract

The reported signal at the LSND experiment, when interpreted as neutrino mixing with δm² = 6 eV², provides evidence for neutrinos with a cosmologically significant mass. However, attempts to reconcile this interpretation of the experiment with other hints about neutrino properties require a (sterile) fourth neutrino and/or an "inverted" neutrino mass hierarchy. An interpretation of the LSND experiment employing δm² = 0.3 eV², with three-generation mixing and a "normal" neutrino mass hierarchy, can just barely be reconciled with the negative results of other laboratory neutrino oscillation experiments and the positive hints of neutrino oscillation from the solar and atmospheric neutrino problems. Though subject to test by by future experiments, such a solution allows (but does not demand) neutrino masses relevant for dark matter.

Original language	English
Pages (from-to)	259-263
Number of pages	5
Journal	Nuclear Physics B - Proceedings Supplements
Volume	51
Issue number	2
DOIs	https://doi.org/10.1016/S0920-5632(96)00510-5
State	Published - Nov 1996

Funding

Supported by grants NSF PHY95-03384 and NASA NAG5-3062 at UCSD.

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abstract = "The reported signal at the LSND experiment, when interpreted as neutrino mixing with δm2 = 6 eV2, provides evidence for neutrinos with a cosmologically significant mass. However, attempts to reconcile this interpretation of the experiment with other hints about neutrino properties require a (sterile) fourth neutrino and/or an {"}inverted{"} neutrino mass hierarchy. An interpretation of the LSND experiment employing δm2 = 0.3 eV2, with three-generation mixing and a {"}normal{"} neutrino mass hierarchy, can just barely be reconciled with the negative results of other laboratory neutrino oscillation experiments and the positive hints of neutrino oscillation from the solar and atmospheric neutrino problems. Though subject to test by by future experiments, such a solution allows (but does not demand) neutrino masses relevant for dark matter.",

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AB - The reported signal at the LSND experiment, when interpreted as neutrino mixing with δm2 = 6 eV2, provides evidence for neutrinos with a cosmologically significant mass. However, attempts to reconcile this interpretation of the experiment with other hints about neutrino properties require a (sterile) fourth neutrino and/or an "inverted" neutrino mass hierarchy. An interpretation of the LSND experiment employing δm2 = 0.3 eV2, with three-generation mixing and a "normal" neutrino mass hierarchy, can just barely be reconciled with the negative results of other laboratory neutrino oscillation experiments and the positive hints of neutrino oscillation from the solar and atmospheric neutrino problems. Though subject to test by by future experiments, such a solution allows (but does not demand) neutrino masses relevant for dark matter.

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Three-generation neutrino mixing and LSND dark matter neutrinos

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