The Seesaw Mechanism in Quark-Lepton Complementarity
| dc.creator | Plentinger, Florian | |
| dc.creator | Seidl, Gerhart | |
| dc.creator | Winter, Walter | |
| dc.date | 2007-07-17 | |
| dc.date | 2007-12-14 | |
| dc.date.accessioned | 2026-07-07T11:17:49Z | |
| dc.date.available | 2026-07-07T11:17:49Z | |
| dc.description | We systematically construct realistic mass matrices for the type-I seesaw mechanism out of more than 20 trillion possibilities. We use only very generic assumptions from extended quark-lepton complementarity, i.e., the leptonic mixing angles between flavor and mass eigenstates are either maximal, or parameterized by a single small quantity epsilon that is of the order of the Cabibbo angle epsilon theta_C. The small quantity epsilon also describes all fermion mass hierarchies. We show that special cases often considered in the literature, such as having a symmetric Dirac mass matrix or small mixing among charged leptons, constitute only a tiny fraction of our possibilities. Moreover, we find that in most cases the spectrum of right-handed neutrino masses is only mildly hierarchical. As a result, we provide for the charged leptons and neutrinos a selected list of 1981 qualitatively different Yukawa coupling matrices (or textures) that are parameterized by the Cabibbo angle and allow for a perfect fit to current data. In addition, we also briefly show how the textures could be generated in explicit models from flavor symmetries. | |
| dc.description | 40 pages, 9 figures, 5 tables. Several typos corrected and references added, final version to appear in PRD. A complete list of the 1981 normal hierarchy textures can be obtained at http://theorie.physik.uni-wuerzburg.de/~winter/Resources/SeeSawTex/ | |
| dc.identifier | https://arxiv.org/abs/0707.2379 | |
| dc.identifier | http://arxiv.org/abs/0707.2379 | |
| dc.identifier | Phys.Rev.D76:113003,2007 | |
| dc.identifier | doi:10.1103/PhysRevD.76.113003 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/193137 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | The Seesaw Mechanism in Quark-Lepton Complementarity | |
| dc.type | text |