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6 papers · 2 filters
Effective SU(2)_L x U(1) theory and the Higgs boson mass
Zhen Yun Fang, G. Lopez Castro, J. L. Lucio +1
We assume the stability of vacuum under radiative corrections in the context of the standard electroweak theory. We find that this theory behaves as a good effective model already…
Behaviour of the Absorptive Part of the W Electromagnetic Vertex
M. Beuthe, R. Gonzalez Felipe, G. Lopez Castro +1
The absorptive part of the vertex induced by massive fermion loops is considered for different kinematical configurations. We show that the axial part of this vertex is diffe…
Electroweak baryogenesis and the Minimal Supersymmetric Standard Model
D. Delepine
In principle, the baryon asymmetry of the Universe can be generated at the electroweak phase transition but the experimental lower limit on the Higgs mass seems to rule out a Stand…
Laboratory Constraints on a 33.9 MeV/c^2 Isosinglet Neutrino: Status and Perspectives
Jan Govaerts, Jules Deutsch, Pierre M. Van Hove
An anomaly in the time behaviour of the signals observed by the KARMEN Collaboration may be interpreted as the possible decay signature of a 33.9 MeV/c mainly sterile neutrino.…
A light stop and electroweak baryogenesis
D. Delepine, J. -M. Gerard, R. Gonzalez Felipe +1
The possibility of creating baryon asymmetry at the electroweak phase transition in the minimal supersymmetric standard model is considered for the case when right-handed squarks a…
Neutrino Decay of Positronium in the Standard Model and Beyond
Jan Govaerts, Marc Van Caillie
Whether in the Standard Model or beyond it, neutrinos contribute to the invisible decay mode of orthopositronium but practically not at all to that of parapositronium. Although thi…