Oleg Popov

Scotogenic inverse seesaw model of neutrino mass

Abstract A variation of the original 2006 radiative seesaw model of neutrino mass through dark matter is shown to realize the notion of inverse seesaw naturally. The dark-matter candidate here is the lightest of three real singlet scalars which may also carry flavor.

Pathways to naturally small Dirac neutrino masses

Abstract If neutrinos are truly Dirac fermions, the smallness of their masses may still be natural if certain symmetries exist beyond those of the standard model of quarks and leptons. We perform a systematic study of how this may occur at tree level and in one loop. We also propose a scotogenic version of the left–right gauge model with naturally small Dirac neutrino masses in one loop.

Neutrino mixing and CP phase correlations

Abstract A special form of the 3 × 3 Majorana neutrino mass matrix derivable from μ – τ interchange symmetry accompanied by a generalized CP transformation was obtained many years ago. It predicts θ 23 = π / 4 as well as δ CP = ± π / 2 , with θ 13 ≠ 0 . Whereas this is consistent with present data, we explore a deviation of this result which occurs naturally in a recent proposed model of radiative inverse seesaw neutrino mass.

Gauge B–L model of radiative neutrino mass with multipartite dark matter

We propose an extension of the standard model of quarks and leptons to include gauge

Type II radiative seesaw model of neutrino mass with dark matter

B-L

One leptoquark to unify them? Neutrino masses and unification in the light of (g − 2)μ, RD(⋆) and RK anomalies

symmetry with an exotic array of neutral fermion singlets for anomaly cancellation. With the addition of suitable scalars also transforming under

Dark revelations of the [SU(3)]3 and [SU(3)]4 gauge extensions of the standard model

U(1)_{B-L}

Quartified leptonic color, bound states, and future electron–positron collider

, this becomes a model of radiative seesaw neutrino mass with possible multipartite dark matter. If leptoquark fermions are added, necessarily also transforming under

Alternative [SU(3)]4 model of leptonic color and dark matter

B-L

Phenomenology of the utilitarian supersymmetric standard model

, the diphoton excess at 750 GeV, recently observed at the Large Hadron Collider, may also be explained.