Neutrino-Antineutrino Asymmetry From The Space-time Noncommutativity

TL;DR

This paper proposes a new mechanism based on space-time noncommutativity that generates neutrino-antineutrino asymmetry in a curved universe, providing analytical expressions and discussing cosmological constraints.

Contribution

It introduces a novel noncommutative space-time framework to explain leptonic asymmetry and derives explicit formulas for ultra-relativistic particles like neutrinos.

Findings

Analytical expression for neutrino-antineutrino asymmetry in noncommutative universe

Constraints on the model from cosmological parameters

Demonstration of anisotropy and axial interactions due to noncommutativity

Abstract

A new mechanism having as an origin the space-time noncommutativity has been shown to generate anisotropy and axial-like interaction giving rise to a leptonic asymmetry for fermionic particles propagating in a curved noncommutative $FRW$ universe. As a by-product, for ultra-relativistic particles like neutrinos, an analytical expression of this asymmetry is derived explicitly. Constraints and bounds from the cosmological parameters are also discussed.