582 citations · 11.5k across the 191 of their papers we have counts for
13 papers · 1 filter
"Hidden" O(2) and SO(2) Symmetry in Lepton Mixing
Julian Heeck, Werner Rodejohann
To generate the minimal neutrino Majorana mass matrix that has a free solar mixing angle and Delta m_sol^2 = 0 it suffices to implement an O(2) symmetry, or one of its subgroups SO…
Kinetic and mass mixing with three abelian groups
Julian Heeck, Werner Rodejohann
We present the possible mixing effects associated with the low-energy limit of a Standard-Model extension by two abelian gauge groups U(1)_1 x U(1)_2. We derive general formulae an…
Sterile Neutrinos for Warm Dark Matter and the Reactor Anomaly in Flavor Symmetry Models
James Barry, Werner Rodejohann, He Zhang
We construct a flavor symmetry model based on the tetrahedral group A_4 in which the right-handed neutrinos from the seesaw mechanism can be both keV warm dark matter particles and…
Four-jet final state in same-sign lepton colliders and neutrinoless double beta decay mechanisms
C. H. Kom, Werner Rodejohann
If neutrinoless double beta decay is observed, it will be important to understand the mechanism(s) behind this process. Using a minimal supersymmetric extension to the Standard Mod…
Symmetrical Parametrizations of the Lepton Mixing Matrix
W. Rodejohann, J. W. F. Valle
Advantages of the original symmetrical form of the parametrization of the lepton mixing matrix are discussed. It provides a conceptually more transparent description of neutrino os…
The Glashow resonance at IceCube: signatures, event rates and vs. interactions
Atri Bhattacharya, Raj Gandhi, Werner Rodejohann +1
We revisit the signatures of the Glashow resonance process in the high-energy astrophysical neutrino observatory IceCube. We note that in addition to the standard…
Gauged L_mu - L_tau Symmetry at the Electroweak Scale
Julian Heeck, Werner Rodejohann
The extension of the Standard Model by a spontaneously broken abelian gauge group based on the L(mu)-L(tau) lepton number can resolve the longstanding discrepancy between experimen…
Systematic search for successful lepton mixing patterns with nonzero theta_13
Werner Rodejohann, He Zhang, Shun Zhou
We perform a systematic search for simple but viable lepton mixing patterns. Our main criterion is that the mixing matrix can be parameterized by three rotation angles, which are s…
Neutrino-less Double Beta Decay and Particle Physics
Werner Rodejohann
We review the particle physics aspects of neutrino-less double beta decay. This process can be mediated by light massive Majorana neutrinos (standard interpretation) or by somethin…
Light Sterile Neutrinos: Models and Phenomenology
James Barry, Werner Rodejohann, He Zhang
Motivated by recent hints in particle physics and cosmology, we study the realization of eV-scale sterile neutrinos within both the seesaw mechanism and flavor symmetry theories. W…
Neutrinoless Double Beta Decay, the Inverted Hierarchy and Precision Determination of theta(12)
Alexander Dueck, Werner Rodejohann, Kai Zuber
Ruling out the inverted neutrino hierarchy with neutrinoless double beta decay experiments is possible if a limit on the effective mass below the minimal theoretically possible val…
Phenomenological Consequences of sub-leading Terms in See-Saw Formulas
Hans Hettmansperger, Manfred Lindner, Werner Rodejohann
Several aspects of next-to-leading (NLO) order corrections to see-saw formulas are discussed and phenomenologically relevant situations are identified. We generalize the formalism…
Extended Empirical Fermion Mass Relation
Werner Rodejohann, He Zhang
It is known that the charged lepton masses obey to high precision an interesting empirical relation (Koide relation). In turn, the light neutrino masses cannot obey such a relation…