8 papers
TeV-scale leptogenesis in a parity symmetric neutrino mass model
Keisuke Harigaya, Gio Leone
We study leptogenesis via out-of-equilibrium decays of right-handed neutrinos in a parity symmetric extension of the Standard Model with gauge group $SU(3)_c \times SU(2)_L \times…
Accidentally Stable Dark Matter in a Parity Solution to the Strong CP Problem
Matthew J. Baldwin, Keisuke Harigaya, Isaac R. Wang
Parity symmetry, with an extended gauge group , can solve the strong CP problem. In particular, the model where $SU(2)_R\times…
Accidental Peccei-Quinn Symmetry from Chiral Gauge Symmetry and Mirror QCD
Hajime Fukuda, Keisuke Harigaya
We present a solution to the strong CP problem in which a simple chiral U(1) gauge symmetry gives rise to an accidental Peccei-Quinn symmetry that is both explicitly and spontaneou…
A Flavor of SO(10) Unification with a Spinor Higgs
Juanca Carrasco-Martinez, Lawrence J. Hall, Keisuke Harigaya +1
We investigate Higgs Parity Unification-a realization of grand unification based on the Higgs Parity mechanism in which the Standard Model (SM) Higgs resides in a spinor r…
Electroweak symmetry non-restoration and suppressed dark radiation in Supersymmetric Twin Higgs model
Marcin Badziak, Keisuke Harigaya, Ignacy NaÅÄcz
We investigate a possibility of electroweak symmetry non-restoration (SNR) below the Twin electroweak scale (TeV) within the Twin Higgs model. We focus on supersymmetric exte…
Upper Bound on Parity Breaking Scale for Doublet WIMP Dark Matter
Matthew J. Baldwin, Keisuke Harigaya, Isaac R. Wang
We consider weakly interacting massive particle (WIMP) dark matter in a Parity solution to the strong CP problem. The WIMP phenomenology can be drastically affected by the presence…