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39 papers · 2 filters
Bounds on Cubic Lorentz-Violating Terms in the Fermionic Dispersion Relation
O. Bertolami, J. G. Rosa
We study the recently proposed Lorentz-violating dispersion relation for fermions and show that it leads to two distinct cubic operators in the momentum. We compute the leading ord…
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…
Leptonic CP Violation and Neutrino Mass Models
Gustavo C. Branco, M. N. Rebelo
We discuss leptonic mixing and CP violation at low and high energies, emphasizing possible connections between leptogenesis and CP violation at low energies, in the context of lept…
Charge Breaking Minima in the Broken R-parity Minimal Supersymmetric Standard Model
M. Hirsch, C. Hugonie, J. C. Romao +1
We reconsider the possible presence of charge and colour breaking minima in the scalar potential of the minimal supersymmetric standard model (MSSM) and its minimal generalization…
Natural braneworld inflation and baryogenesis
R. Gonzalez Felipe
In natural inflation models, the inflaton is a pseudo Nambu-Goldstone boson and the flatness of the potential is protected by shift symmetries. In this framework, a successful infl…