Inverse seesaw mechanism in noncommutative geometry

The Inverse Seesaw Mechanism in Noncommutative Geometry

In this publication we will implement the inverse Seesaw mechanism [2] into the noncommutative framework [1] on the basis of the AC-extension of the Standard Model [3]. The main difference to the classical AC model is the chiral nature of the AC fermions with respect to a U(1)X extension of the Standard Model gauge group. It is this extension which allows us to couple the right-handed neutrinos...

Seesaw Mechanism in Warped Geometry

We show how the seesaw mechanism for neutrino masses can be realized within a five dimensional (5D) warped geometry framework. Intermediate scale standard model (SM) singlet neutrino masses, needed to explain the atmospheric and solar neutrino oscillations, are shown to be proportional to MPl exp((2c − 1)πkR), where c denotes the coefficient of the 5D Dirac mass term for the singlet neutrino wh...

Radiative Inverse Seesaw: Verifiable New Mechanism of Neutrino Mass

If the canonical seesaw mechanism alone is responsible for neutrino mass, i.e. mν ≃ −m 2 D/mN , it can neither be proved nor disproved at the TeV energy scale. A new verifiable mechanism of neutrino mass is proposed, using the inverse seesaw, with new physics at the TeV scale, such that mν ≃ m 2 DǫL/m 2 N , where ǫL is a two-loop effect. Dark-matter candidates also appear naturally. Introductio...

Seesaw geometry and leptogenesis

The representation of the seesaw orthogonal matrix in the complex plane establishes a graphical correspondence between neutrino mass models and geometrical configurations, particularly useful to study relevant aspects of leptogenesis. We first derive the CP asymmetry bound for hierarchical heavy neutrinos and then an expression for the effective leptogenesis phase, determining the conditions fo...

Noncommutative geometry