2006/08/31 by Midori Obara, Zhi‐zhong Xing, Zhi-zhong Xing · 1 citation
Physics and Astronomy · #Ansatz #Astrophysics and Cosmic Phenomena #Degenerate energy levels #Double beta decay #MAJORANA #Mathematical physics #Neutrino #Neutrino Physics Research #Neutrino oscillation #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum mechanics #Right handed #hep-ph
paper · pdf · doi:10.1016/j.physletb.2006.11.010
published as Phys.Lett. B644 (2007) 136-146 · 17 pages, 4 figures, references added, minor changes
arxiv created 2006/10/16 · openalex publication_date 2006/11/22 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Taking three right-handed Majorana neutrino masses Mi to be partially non-degenerate, we make a new analysis of the Fukugita-Tanimoto-Yanagida ansatz and confront it with current neutrino oscillation data. We determine the parameter space for cases (A) M3 = M2 ≠ M1, (B) M2 = M1 ≠ M3 and (C) M1 = M3 ≠ M2, and examine their respective deviations from the original M1 = M2 = M3 case. The numerical constraints on three light neutrino masses, three neutrino mixing angles and three CP-violating phases are also obtained, together with the predictions for the Jarlskog invariant of CP violation and the effective masses of the tritium beta decay and the neutrinoless double-beta decay.