Vanishing Higgs Quadratic Divergence in the Scotogenic Model and Beyond

It is shown that the inherent quadratic divergence of the Higgs mass renormalization of the standard model may be avoided in the well-studied scotogenic model of radiative neutrino mass as well as other analogous extensions.Comment: 6 pages, 2 figure

Radiative Origin of All Quark and Lepton Masses through Dark Matter with Flavor Symmetry

The fundamental issue of the origin of mass for all quarks and leptons (including Majorana neutrinos) is linked to dark matter, odd under an exactly conserved Z(2) symmetry which may or may not be derivable from an U(1) gauge symmetry. The observable sector interacts with a proposed dark sector which consists of heavy neutral singlet Dirac fermions and suitably chosen new scalars. Flavor symmetry is implemented in a renormalizable context with just the one Higgs doublet of the standard model in such a way that all observed fermions obtain their masses radiatively through dark matter.Comment: 12 pages, 4 figures, version to appear in PR

Radiative Scaling Neutrino Mass and Warm Dark Matter

A new and radical scenario of the simple 2006 model of radiative neutrino mass is proposed, where there is no seesaw mechanism, i.e. neutrino masses are not inversely proportional to some large mass scale, contrary to the prevalent theoretical thinking. The neutral singlet fermions in the loop have masses of order 10 keV, the lightest of which is absolutely stable and the others are very long-lived. All are components of warm dark matter, which is a possible new paradigm for explaining the structure of the Universe at all scales.Comment: 10 pages, 2 figure

Heavy Flavour Production at sqrt(s)=7 TeV

The measurements of b quark, quarkonium and exotic state production performed with the ATLAS and CMS experiments at sqrt(s)=7 TeV are presented. The b-quark production cross section is measured both in inclusive and fully reconstructed B hadron decays. The results are compared with QCD expectations at tree-level and NLO.Comment: 4 pages, 7 figures, proceedings of the talk presented at Rencontres de Moriond QCD and High Energy Interactions 2012, on behalf of the ATLAS and CMS collaboration