175 citations · 1.4k across the 42 of their papers we have counts for
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Texture Zeros and Weak Basis Transformations
G. C. Branco, D. Emmanuel-Costa, R. Gonzalez Felipe
We investigate the physical meaning of some of the "texture zeros" which appear in most of the Ansatze on quark masses and mixings. It is shown that starting from arbitrary quark m…
Seesaw mechanism and structure of neutrino mass matrix
E. Kh. Akhmedov, G. C. Branco, M. N. Rebelo
We consider the seesaw mechanism of neutrino mass generation in the light of our present knowledge of the neutrino masses and mixing. We analyse the seesaw mechanism constrained by…
Large Neutrino Mixing with Universal Strength of Yukawa Couplings
G. C. Branco, M. N. Rebelo, J. I. Silva-Marcos
We analyse, within the framework of universal strength for Yukawa couplings (USY), various structures for the Dirac and Majorana neutrino mass matrices giving rise, through the see…
Yukawa Structure with Maximal Predictability
G. C. Branco, D. Emmanuel-Costa, R. Gonzalez Felipe
A simple Ansatz for the quark mass matrices is considered, based on the assumption of a power structure for the matrix elements and the requirement of maximal predictability. A goo…
A Real CKM Matrix and Physics Beyond the Standard Model
G. C. Branco, F. Cagarrinho, F. Krüger
We study the possible existence of a real Cabibbo-Kobayashi-Maskawa (CKM) matrix, with CP violation originating from physics beyond the standard model (SM). We show that present ex…