Stefano Morisi

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S. Morisi, ∗ D. V. Forero, † J. C. Romão, ‡ and J. W. F. Valle § Institut für Theoretische Physik und Astrophysik, Universität Würzburg, 97074 Würzburg, Germany Departamento de F́ısica and CFTP, Instituto Superior Técnico Technical University of Lisbon,1049-001 Lisboa, Portugal AHEP Group, Institut de F́ısica Corpuscular – C.S.I.C./Universitat de València(More)
Article history: Received 25 March 2013 Received in revised form 29 May 2013 Accepted 29 May 2013 Available online 1 June 2013 Editor: J. Hisano We propose a realistic A4 extension of the Standard Model involving a particular quark–lepton mass relation, namely that the ratio of the third family mass to the geometric mean of the first and second family(More)
The Standard Model (SM) has so far provided a remarkably good description of Nature, except for its failure to account for neutrino oscillations [1, 2] and for the growing evidence for the existence of dark matter [3]. Perhaps these two seemingly unrelated problems constitute two sides of the same coin. Several attempts have been made [4– 7] to account for(More)
In [1], it was proposed a flavour model based on the symmetry group S4, managing to describe fermion masses and mixings. The Weinberg operator has been used in order to provide the smallness of the neutrino masses, while a set of scalar fields, getting non-vanishing vacuum expectation values, spontaneously breaks down S4 and provides the Tri-Bimaximal(More)
Sofiane M. Boucenna, Stefano Morisi, Qaisar Shafi, and José W. F. Valle AHEP Group, Institut de Física Corpuscular – C.S.I.C./Universitat de València, Parc Cientific de Paterna. C/ Catedratico Jose Beltran, 2 E-46980 Paterna (València), Spain DESY, Platanenallee 6, D-15735 Zeuthen, Germany Department of Physics and Astronomy, Bartol Research Institute,(More)