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17 papers · 2 filters
A Supersymmetric Model with Dirac Neutrino Masses
Gardner Marshall, Mathew McCaskey, Marc Sher
New models have recently been proposed in which a second Higgs doublet couples only to the lepton doublets and right-handed neutrinos, yielding Dirac neutrino masses. The vacuum va…
Optimal Parametrization of Deviations from Tribimaximal Form of the Neutrino Mass Matrix
Christopher D. Carone, Richard F. Lebed
We obtain a general parametrization for the neutrino Majorana mass matrix in which all possible deviations from tribimaximal mixing are given by three complex parameters, and the d…
Fourth Generation t-prime in Extensions of the Standard Model
Erin De Pree, Gardner Marshall, Marc Sher
We study the effects of a fourth generation t-prime quark in various extensions of the standard model. In the Randall-Sundrum model, the decay t-prime -> t Z has a large branching…
Using baryon octet magnetic moments and masses to fix the pion cloud contribution
Franz Gross, G. Ramalho, K. Tsushima
Using SU(3) symmetry to constrain the pion BB' couplings, assuming SU(3) breaking comes only from one-loop pion cloud contributions, and using the the covariant spectator theory to…
Higgs Masses in the Four Generation MSSM
Sean Litsey, Marc Sher
In the Minimal Supersymmetric Standard Model (MSSM) with three generations of fermions, there is a stringent upper bound on the mass of the lightest neutral Higgs h, and the mass o…
How Well Does AdS/QCD Describe QCD?
Joshua Erlich
AdS/QCD is an extra-dimensional approach to modeling hadronic physics, motivated by the AdS/CFT correspondence in string theory. AdS/QCD models are often more accurate than would h…