2017/07/31 by Zhi‐zhong Xing, Zhi-zhong Xing, Jing-yu Zhu
Mathematics · Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Combinatorics #Electron #Fermion #Geometry #Lepton #MAJORANA #Mass matrix #Mathematics #Matrix (chemical analysis) #Mixing (physics) #Neutrino #Neutrino Physics Research #Nuclear physics #Order (exchange) #Parametrization (atmospheric modeling) #Particle physics #Particle physics theoretical and experimental studies #Physics #Prime (order theory) #Quantum mechanics #Reflection (computer programming) #Reflection symmetry #Standard Model (mathematical formulation) #Symmetry (geometry) #Symmetry breaking #hep-ex #hep-ph
paper · pdf · doi:10.1088/1674-1137/41/12/123103
17 pages, 5 figures, some changes made, new figures and discussions added, and accepted for publication in Chinese Phys. C
arxiv created 2017/10/09 · openalex created_date 2017/10/20 · openalex publication_date 2017/11/30 · arxiv updated 2018/01/17 · openalex updated_date 2026/08/05
If the neutrino mass spectrum turns out to be m 3 < m 1 < m 2 , it may be relabeled as such that all the masses of fundamental fermions with the same electrical charges are in order. In this case the columns of the 3 × 3 lepton flavor mixing matrix U should be reordered accordingly, and the resulting pattern U' may involve one or two large mixing angles in the standard parametrization or its variations. Since the Majorana neutrino mass matrix remains unchanged in such a mass relabeling, a possible μ-τ reflection symmetry is respected in this connection and its breaking effects are model-independently constrained at the 3 σ level by using current experimental data.