2007/03/31 by E. Fernandez-Martinez, E. Fernández-Martínez, M.B. Gavela +5 · 223 citations
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #CP violation #Class (philosophy) #Computer science #Geography #Matrix (chemical analysis) #Mixing (physics) #Moduli #Neutrino #Neutrino Physics Research #Particle physics #Particle physics theoretical and experimental studies #Physics #Physics beyond the Standard Model #Quantum mechanics #Standard Model (mathematical formulation) #Theoretical physics #Unitary matrix #Unitary state #hep-ph
paper · pdf · doi:10.1016/j.physletb.2007.03.069
published in Physics Letters B 649(5-6), 427-435 (Elsevier BV) · 14 pages, 4 eps figures. References updated
openalex publication_date 2007/04/20 · arxiv created 2007/06/25 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
A low-energy non-unitary leptonic mixing matrix is a generic effect of a large class of theories accounting for neutrino masses. It is shown how the extra CP-odd phases of a general non-unitary matrix allow for sizeable CP-asymmetries in channels other than those dominant in the standard unitary case. The νμ→ ντ channel turns out to be an excellent tool to further constrain moduli and phases. Furthermore, we clarify the relationship between our approach and the so-called "non-standard neutrino interactions" schemes: the sensitivities explored here apply as well to such constructions.