18.1k citations
- University of LisbonPT1.3k papers
- Universidade Técnica de LisboaPT388 papers
- Centre National de la Recherche ScientifiqueFR326 papers
- Instituto de Plasmas e Fusão NuclearPT209 papers
- European Organization for Nuclear ResearchCH202 papers
- Centro de Física Teórica de Partículas201 papers
- Instituto Politécnico de LisboaPT190 papers
- Instituto de TelecomunicaçõesPT175 papers
- Universitat de ValènciaES175 papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR143 papers
- Centro de Astrofísica e GravitaçãoPT133 papers
- LIP - Laboratory of Instrumentation and Experimental Particle PhysicsPT133 papers
39 papers · 2 filters
Analytical approach to chiral symmetry breaking in Minkowsky space
Pedro Bicudo
The mass gap equation for spontaneous chiral symmetry breaking is studied directly in Minkowsky space. In hadronic physics, spontaneous chiral symmetry breaking is crucial to gener…
Quark mixing from softly broken symmetries
W. Grimus, L. Lavoura
Quark flavor mixing may originate in the soft breaking of horizontal symmetries. Those symmetries, which in the simplest case are three family U(1) groups, are obeyed only by the d…
Phenomenological Tests of Supersymmetric A_4 Family Symmetry Model of Neutrino Mass
M. Hirsch, J. C. Romao, S. Skadhauge +2
Recently Babu, Ma and Valle proposed a model of quark and lepton mixing based on symmetry. Within this model the lepton and slepton mixings are intimately related. We perform…
Universality of Yukawa Couplings Confronts Recent Neutrino Data
G. C. Branco, M. N. Rebelo, J. I. Silva-Marcos
We propose a flavour structure for the leptonic sector of the Standard Model, based on the idea of universality of Yukawa couplings, which accommodates all the experimental data on…
Analytic proof that the Quark Model complies with the PCAC theorems
Pedro Bicudo
The Weinberg theorem, the Adler self consistency zero, the Goldberger and Treiman relation and the Gell-Mann Oakes and Renner relation are proved analytically in full detail for Qu…
Neutrino Data, CP violation and Cosmological Implications
M. N. Rebelo
Recent experimental data provides evidence for neutrino masses and leads to the possibility of leptonic mixing and CP violation. In this work special attention is dedicated to CP v…