2.6k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Instituto Superior TécnicoPT388 papers
- Centro de Física Teórica de Partículas54 papers
- University of ViennaAT37 papers
- Centre National de la Recherche ScientifiqueFR34 papers
- University of LisbonPT34 papers
- University of MississippiUS31 papers
- Universitat de ValènciaES27 papers
- California Institute of TechnologyUS25 papers
- University of CoimbraPT19 papers
- European Organization for Nuclear ResearchCH18 papers
- Instituto de TelecomunicaçõesPT18 papers
- Instituto Politécnico de LisboaPT17 papers
9 papers · 2 filters
On a model with two zeros in the neutrino mass matrix
W. Grimus, L. Lavoura
We consider a Majorana neutrino mass matrix with , in the basis where the charged-lepton mass matrix is diagonal. W…
Zeros of the inverted neutrino mass matrix
L. Lavoura
I investigate viable textures with two texture zeros for the inverted neutrino mass matrix, and present the predictions of those textures for the neutrino masses and for lepton mix…
Softly broken lepton number L_e - L_μ- L_τwith non-maximal solar neutrino mixing
W. Grimus, L. Lavoura
We consider the most general neutrino mass matrix which leads to , and present the formulae needed for obtaining the neutrino masses and mixing parameters in that case.…
Renormalization of the neutrino mass operators in the multi-Higgs-doublet Standard Model
W. Grimus, L. Lavoura
We derive the renormalization group equations (RGE) for the flavour coupling matrices of the effective dimension-five operators which yield Majorana neutrino masses in the multi-Hi…
Non-vanishing and from a broken symmetry
Walter Grimus, Anjan S. Joshipura, Satoru Kaneko +3
It is shown that the neutrino mass matrices in the flavour basis yielding a vanishing are characterized by invariance under a class of symmetries. A specific i…
Lepton mixing angle with a horizontal symmetry
W. Grimus, A. S. Joshipura, S. Kaneko +2
We discuss a model for the lepton sector based on the seesaw mechanism and on a family symmetry. The model predicts the mixing angle to vanish. The solar mixing angl…
Models of maximal atmospheric neutrino mixing and leptogenesis
W. Grimus, L. Lavoura
We discuss two extensions of the Standard Model based on the seesaw mechanism and on non-abelian family symmetry groups O(2) and , respectively. Both models have a twofold-deg…
Symmetry realization of texture zeros
W. Grimus, A. S. Joshipura, L. Lavoura +1
We show that it is possible to enforce texture zeros in arbitrary entries of the fermion mass matrices by means of Abelian symmetries; in this way, many popular mass-matrix texture…
Extension of the Buchalla-Safir bound
L. Lavoura
I provide a simple derivation of the Buchalla-Safir bound on gamma. I generalize it to the case where an upper bound on the phase of the penguin pollution is assumed. I apply the B…