248 citations · 1.9k across the 46 of their papers we have counts for
47 papers
Cogenerating and Pre-annihilating Dark Matter by a New Gauge Interaction in a Unified Model
S. M. Barr, Robert J. Scherrer
Grand unified theories based on large groups (with rank greater or equal to 6 are a natural context for dark matter models. They contain Standard-Model-singlet fermions that could…
Proton Decay and the Origin of Quark and Lepton Mixing
Stephen M. Barr, Heng-Yu Chen
It was recently proposed that all flavor mixing has a single source, namely the mixing of the three quark and lepton families with "extra" vectorlike fermions in 5 + 5-bar multiple…
Higgs Multiplets of the Quark-Lepton Family Group
M. A. Ajaib, S. M. Barr
It is shown that realistic models can be constructed in which the Standard Model Higgs field is in a non-trivial multiplet of a non-abelian family group of the quarks and leptons.…
Radiative Fermion Mass Hierarchy in a Non-supersymmetric Unified Theory
S. M. Barr
In non-supersymmetric grand unified models a ``radiative fermion mass hierarchy" can be achieved in which the spectrum of quark and lepton masses is determined entirely by physics…
Extra bosons and low-energy tests of unification
S. M. Barr, Almas Khan
If there is an extra U(1) gauge symmetry broken at low energies, then it may be possible from the charges of the known quarks and leptons under this U(1) to make inferences about h…
Flat-Directions in Grand Unification With Symmetry
S. M. Barr, Bumseok Kyae, Qaisar Shafi
It is shown that in SO(10) and SU(5) models having a symmetry, the requirement of breaking the unified group to the Standard Model leads to flat directions in the scalar p…