Short-baseline neutrino oscillations and neutrinoless double-βdecay in the framework of three neutrino mixing and a mass hierarchy

1996/02/02 by S. M. Bilenky, A. Bottino, C. Giunti +1 · 2 citations
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Neutrino Physics Research #Particle physics theoretical and experimental studies #hep-ph

paper · pdf · doi:10.1103/physrevd.54.1881

published as Phys.Rev.D54:1881-1890,1996 · RevTeX file, 26 pages including 9 figures. The postscript file is available at http://www.to.infn.it/teorici/giunti/papers.html

arxiv created 1996/02/02 · openalex publication_date 1996/08/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We have analyzed the results of the latest terrestrial neutrino oscillation experiments in the framework of a model with mixing of three massive neutrinos and a neutrino mass hierarchy (m₁\ensuremath≪m₂\ensuremath≪m₃). In this model, oscillations of the terrestrial neutrinos are characterized by three parameters, \ensuremathΔm²\ensuremath≡m₃²\ensuremath-m₁² and the squared moduli of the two mixing matrix elements U_e3 and U_\ensuremathμ3. Using the results of disappearance experiments and solar neutrino experiments, it is shown that only two regions of possible values of |U_e3|² and |U_\ensuremathμ3|² are allowed: (I) |U_e3|² and |U_\ensuremathμ3|² are both small and (II) |U_e3|² is small and |U_\ensuremathμ3|² is large. If the mixing parameters are in region I, \ensuremathν_\ensuremathμ\ensuremath\leftrightarrows\ensuremathν_e oscillations are suppressed. In this case the LSND indication in favor of \ensuremathν_\ensuremathμ\ensuremath\leftrightarrows\ensuremathν_e oscillations is not compatible with the negative results of all other experiments. If the mixing parameters are in region II, \ensuremathν_e\ensuremath\leftrightarrows\ensuremathν_\ensuremathτ oscillations are strongly suppressed. If massive neutrinos are Majorana particles, our analysis shows that neutrinoless double-\ensuremathβ decay could be observed in the experiments of the next generation only if the mixing parameters are in region I.

Citations

• Neutrino flavor mixing constrained by accelerator and reactor experiments and solar neutrino observation
• Constraints on neutrino oscillations from big bang nucleosynthesis
• Limits on Muon-Neutrino Oscillations in the Mass Range30<Δm2<1000eV2/c4
• Real-time, directional measurement ofB<mml:mprescripts/>8solar neutrinos in the Kamiokande II detector

Cited by

• Majorana neutrinos, neutrino mass spectrum,CPviolation, and neutrinoless double β decay. II. Mixing of four neutrinos
• Cosmological nucleosynthesis and active-sterile neutrino oscillations with small mass differences: The nonresonant case