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

S. M. Bilenky, A. Bottino, C. Giunti, and C. W. Kim
Phys. Rev. D 54, 1881 – Published 1 August 1996
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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 (m1m2m3). In this model, oscillations of the terrestrial neutrinos are characterized by three parameters, Δm2m32m12 and the squared moduli of the two mixing matrix elements Ue3 and Uμ3. Using the results of disappearance experiments and solar neutrino experiments, it is shown that only two regions of possible values of |Ue3|2 and |Uμ3|2 are allowed: (I) |Ue3|2 and |Uμ3|2 are both small and (II) |Ue3|2 is small and |Uμ3|2 is large. If the mixing parameters are in region I, νμνe oscillations are suppressed. In this case the LSND indication in favor of νμνe oscillations is not compatible with the negative results of all other experiments. If the mixing parameters are in region II, νeντ oscillations are strongly suppressed. If massive neutrinos are Majorana particles, our analysis shows that neutrinoless double-β decay could be observed in the experiments of the next generation only if the mixing parameters are in region I.

  • Received 5 February 1996

DOI:https://doi.org/10.1103/PhysRevD.54.1881

©1996 American Physical Society

Authors & Affiliations

S. M. Bilenky1, A. Bottino2, C. Giunti2, and C. W. Kim3

  • 1Joint Institute for Nuclear Research, Dubna, Russia and SISSA-ISAS, Trieste, Italy
  • 2INFN, Sezione di Torino and Dipartimento di Fisica Teorica, Università di Torino, Via P. Giuria 1, 10125 Torino, Italy
  • 3Department of Physics and Astronomy, The Johns Hopkins University, Baltimore, Maryland 21218

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Issue

Vol. 54, Iss. 3 — 1 August 1996

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