Neutrinoless double beta decay in light of SNO salt data

2003/09/21 by Hitoshi Murayama, C. Peña‐Garay, Carlos Pena-Garay · 1 citation
Physics and Astronomy · #Dark Matter and Cosmic Phenomena #Neutrino Physics Research #Particle physics theoretical and experimental studies #hep-ph

paper · pdf · doi:10.1103/physrevd.69.031301

published as Phys.Rev.D69:031301,2004 · REVTEX4, three figures. Now uses the updated SK atmospheric data rather than naive rescaling. Conclusion unchanged. References added

arxiv created 2003/09/21 · openalex publication_date 2004/02/20 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01

Abstract

In the SNO data from its salt run, probably the most significant result is the consistency with the previous results without assuming the ⁸B energy spectrum. In addition, they have excluded the maximal mixing at a very high confidence level. This has important implications on the double beta decay experiments. For the inverted or degenerate mass spectrum, we find |〈m_\ensuremathν〉_ee|>0.013eV at 95% C.L., and the next generation experiments can discriminate Majorana and Dirac neutrinos if the inverted or degenerate mass spectrum will be confirmed by the improvements in cosmology, tritium data beta decay, or long-baseline oscillation experiments.

Citations

• Direct Evidence for Neutrino Flavor Transformation from Neutral-Current Interactions in the Sudbury Neutrino Observatory

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• Physics at a future Neutrino Factory and super-beam facility