Marc Sher

TL;DR: In this article, theoretical and phenomenological aspects of two-Higgs-doublet extensions of the Standard Model are discussed and a careful study of spontaneous CP violation is presented, including an analysis of the conditions which have to be satisfied in order for a vacuum to violate CP.

TL;DR: In this article, the method of calculating radiative corrections to the scalar potentials is reviewed, with an emphasis on renormalization group improvement of the potential, and the results are then applied to the standard model to derive stringent bounds on Higgs and fermion passes.

TL;DR: It is shown that, if the basic Yukawa coupling matrices are of the Fritzsch form or some generalizations thereof, then the neutral flavor-changing couplings have a hierarchical structure given by the lower bound of the order of ${\ensuremath{\Delta}}_{\mathrm{ds}}$ times 1 TeV on the mass of the exchanged scalar from the neutral-kaon mass difference.

TL;DR: The possibility of additional quarks and leptons beyond the three generations already established is discussed in this paper, with the possibility of exceptionally long lifetimes and decay modes being dependent on the mass spectrum and mixing angles.

TL;DR: The work of the Energy Frontier Higgs Boson working group of the 2013 Community Summer Study (Snowmass) as mentioned in this paper summarizes the key elements of a precision Higgs physics program and document the physics potential of future experimental facilities as elucidated during the Snowmass study.