12/4/12, 5:00 PM
We present a brief overview of the minimal S3 invariant extension of the Standard Model in which the concept of flavour is extended to the Higgs sector by introducing in the theory three Higgs fields which are SU(2) doublets. The mass matrices of quarks and leptons are reparametrized in terms of their eigenvalues, thus allowing to express all entries in the mixing matrices, V_CKM and U_PMNS,...
Catarina Simões (CFTP-IST)
12/4/12, 5:25 PM
In this work, we study the implications in the neutrino sector of a Z_4 flavour symmetry in the context of a non-supersymmetric SU(5), where both up- and down-quark mass matrices have the nearest-neighbour interaction form. The model is composed by one 5 and one 45 Higgs representations and in addition to the standard fermionic content, it is added three 24 fermionic representations. In such...
David Vanegas (IFIC-UV)
12/4/12, 5:50 PM
Krishnan Rama (University of Warwick)
12/4/12, 6:15 PM
A procedure for using the eigenvectors of the elements of the representations of a discrete group in model building is introduced and is used to construct a model that produces a large reactor mixing angle, sin^2(theta13)=2/3 sin^2(pi/16), in agreement with recent neutrino oscillation observations. The model fully constrains the neutrino mass ratios and predicts normal hierarchy with the light...