We present "twin Higgs models," simple realizations of the Higgs boson as a pseudo Goldstone boson that protect the weak scale from radiative corrections up to scales of order 5-10 TeV. In the… (More)

We consider supersymmetric theories where the standard-model quark and lepton fields are localized on a ‘3-brane’ in extra dimensions, while the gauge and Higgs fields propagate in the bulk. If… (More)

We present a new class of models that stabilize the weak scale against radiative corrections up to scales of order 5TeV without large corrections to precision electroweak observables. In these… (More)

The work of Arkani-Hamed, Dimopoulos and Dvali (ADD) [1] and of Randall and Sundrum (RS) [2] has stimulated interest in explaining the observed weakness of gravity (the “hierarchy problem”) using… (More)

We point out that in supersymmetric theories with extra dimensions, radius stabilization can give rise to a VEV for the F component of the radius modulus. This gives an important contribution to… (More)

We consider scenarios where strong conformal dynamics constitutes the ultraviolet completion of the physics that drives electroweak symmetry breaking. We show that in theories where the operator… (More)

We establish a correspondence between those Feynman diagrams in the MSSM which give supersymmetric contributions to the muon anomalous magnetic moment and those which contribute to the flavor… (More)

We consider theories with one or more compact dimensions with size R > 1/M , where M is the fundamental Planck scale, with the observable and hidden sectors localized on spatially separated… (More)

The current experimental lower bound on the Higgs mass significantly restricts the allowed parameter space in most realistic supersymmetric models, with the consequence that these models exhibit… (More)

We consider models of dynamical supersymmetry breaking in which the extremization of a tree-level superpotential conflicts with a quantum constraint. We show that in such models the low-energy… (More)