1,721,025 research outputs found
Collider Phenomenology of a Fourth Lepton Family in Technicolor Models
No full textTalk on "Collider Phenomenology of a Fourth Lepton Family in Technicolor Models
Lepton electric dipole moments from heavy states Yukawa couplings
No full textIn supersymmetric theories the radiative corrections due to heavy states could leave their footprints in the flavour structure of the supersymmetry breaking masses. We investigate whether present and future searches for the muon and electron EDMs could be sensitive to the CP violation and flavour misalignment induced on slepton masses by the radiative corrections due to the right-handed neutrinos of the seesaw model and to the heavy Higgs triplets of SU(5) GUT. When this is the case, limits on the relevant combination of neutrino Yukawa couplings are obtained. Explicit analytical expressions are provided which accounts for the dependencies on the supersymmetric mass parameters
A discussion on the first results from MiniBooNE
No full textTalk on "A discussion on the first results from MiniBooNE".
Joint presentation with L.Camilleri and T.Schwet
Some aspects of flavor and CP violations in theories beyond the Standard Model
No full textInvited Seminar on "Some aspects of flavor and CP violations in theories beyond the Standard Model
Susy Seesaw: from EDM to Leptogenesis
No full textInformal talk on "Susy Seesaw: from EDM to Leptogenesis
Quantum Resonant Leptogenesis and Minimal Flavor Violation
No full textSeminar on "Quantum Resonant Leptogenesis and Minimal Flavor Violation
Electric Dipole Moments in Supersymmetry
No full textPlenary talk on "Electric Dipole Moments in Supersymmetry"
The Problem of neutrino masses in extensions of the standard model
No full textWe review the problem of neutrino masses and mixings in the context of Grand Unified Theories. After a brief summary of the present experimental status of neutrino physics, we describe how the see-saw mechanism can automatically account for the large atmospheric mixing angle. We provide two specific examples where this possibility is realized by means of a flavour symmetry. We then review in some detail the various severe problems which plague minimal GUT models (like the doublet-triplet splitting and proton-decay) and which force to investigate the possibility of constructing more elaborate but realistic models. We then show an example of a quasi-realistic SUSY SU(5) model which, by exploiting the crucial presence of an abelian flavour symmetry, does not require any fine-tuning and predicts a satisfactory phenomenology with respect to coupling unification, fermion masses and mixings and bounds from proton decay
A Maximal atmospheric mixing from a maximal CP violating phase
No full textWe point out an elegant mechanism to predict a maximal atmospheric angle, which is based on a maximal CP violating phase difference between second and third lepton families in the flavour symmetry basis. In this framework, a discussion of the predictions for theta_{12}, |U_{e3}|, delta and their possible correlations is provided. We also present an explicit realisation in terms of an SO(3) flavour symmetry model
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