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Annual Review of Nuclear and Particle Science

Volume 65, 2015

Prospects for Measurement of the Neutrino Mass Hierarchy

Abstract

The unknown neutrino mass hierarchy—whether the ν mass eigenstate is the heaviest or the lightest—represents a major gap in our knowledge of neutrino properties. Determining the hierarchy is a critical step toward further precision measurements in the neutrino sector. The hierarchy is also central to interpreting the next generation of neutrinoless double- decay results, plays a role in numerous cosmological and astrophysical questions, and serves as a powerful model discriminant for theories of neutrino mass generation and unification. Various current and planned experiments claim sensitivity for establishing the neutrino mass hierarchy. I review the most promising of these here, paying special attention to points of concern and consolidating the projected sensitivities into an outlook for the years ahead.

Keyword(s): future experiments, hierarchy, mass ordering, neutrino oscillations
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2015-10-19
2025-06-24
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Prospects for Measurement of the Neutrino Mass Hierarchy
Annual Review of Nuclear and Particle Science 65, 177 (2015); https://doi.org/10.1146/annurev-nucl-102014-021916
/content/journals/10.1146/annurev-nucl-102014-021916
/content/journals/10.1146/annurev-nucl-102014-021916
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