106 citations · 331 across the 11 of their papers we have counts for
13 papers
Lepton parity dark matter and naturally unstable domain walls
Ernest Ma, Partha Kumar Paul, Narendra Sahu
We propose a simple and predictive setup that connects neutrino masses, dark matter (DM), and gravitational waves. A minimal lepton parity DM scenario is considered where the resid…
Finite SU(3)^3 model
S. Heinemeyer, E. Ma, M. Mondragon +1
We consider N=1 supersymmetric gauge theories based on the group SU(N)_1 x SU(N)_2 x ... x SU(N)_k with matter content (N,N*,1,...,1) + (1,N,N*,..., 1) + >... + (N*,1,1,...,N) as c…
New Lepton Family Symmetry and Neutrino Tribimaximal Mixing
Ernest Ma
The newly proposed finite symmetry Sigma(81) is applied to the problem of neutrino tribimaximal mixing. The result is more satisfactory than those of previous models based on A_4 i…
Baryon and Lepton Number Violation with Scalar Bilinears
H. V. Klapdor-Kleingrothaus, E. Ma, U. Sarkar
We consider all possible scalar bilinears, which couple to two fermions of the standard model. The various baryon and lepton number violating couplings allowed by these exotic scal…
Verifiable Model of Neutrino Masses from Large Extra Dimensions
Ernest Ma, Martti Raidal, Utpal Sarkar
We propose a new scenario of neutrino masses with a Higgs triplet in a theory of large extra dimensions. Lepton number violation in a distant brane acts as the s…
Probing the Exotic Particle Content Beyond the Standard Model
Ernest Ma, Martti Raidal, Utpal Sarkar
We explore the possible exotic particle content beyond the standard model by examining all its scalar bilinear combinations. We categorize these exotic scalar fields and show that…
Efficacious Extra U(1) Factor for the Supersymmetric Standard Model
E. Keith, Ernest Ma
The totality of neutrino-oscillation phenomena appears to require the existence of a light singlet neutrino. As pointed out recently, this can be naturally accommodated with a spec…
Increasing R_b and Decreasing R_c with New Heavy Quarks
Ernest Ma
If the b and c quarks mix with new heavy quarks of weak isospin I_3 = -1 and 0 respectively, then the Z -> b b(bar) (c c(bar)) rate is necessarily greater (smaller) than that of th…
Simple Radiative Neutrino Mass Matrix for Solar and Atmospheric Oscillations
Ernest Ma
A simple 3 X 3 neutrino mass matrix is proposed to accommodate both the solar and atmospheric neutrino deficits. This scenario can be realized naturally by a radiative mechanism fo…
Left-Right Symmetry and Supersymmetric Unification
Ernest Ma
The existence of an SU(3) X SU(2)_L X SU(2)_R X U(1) gauge symmetry with g_L = g_R at the TeV energy scale is shown to be consistent with supersymmetric SO(10) grand unification at…
CP Violation and Leptogenesis
Andy Acker, Hisashi Kikuchi, Ernest Ma +1
Recently a model of chaotic inflation was proposed, where the right handed sneutrinos drive the baryogenesis. We study some of the details of the model, particularly the aspect of…
New Supersymmetric Option for Two Higgs Doublets
Ernest Ma, Daniel Ng
If the standard electroweak gauge model is embedded in a larger theory which is supersymmetric and the latter breaks down to the former at some mass scale, then the reduced Higgs p…
Symmetry Remnants: Rationale for Having Two Higgs Doublets
Ernest Ma, Daniel Ng
There is a good reason why the standard electroweak SU(2) X U(1) gauge model may be supplemented by two Higgs scalar doublets. They may be remnants of the spontaneous breaking of a…