Leptogenesis due to oscillating Higgs field

TL;DR

This paper introduces a novel leptogenesis mechanism where an oscillating Higgs field creates lepton asymmetry and matter particles simultaneously, analyzed within the type-I seesaw model.

Contribution

It proposes a new leptogenesis scenario driven by oscillating Higgs background, supported by numerical analysis within the type-I seesaw framework.

Findings

Lepton asymmetry of |n_L/s| = 2.4 x 10^{-10} can be generated.

Higgs oscillation and neutrino masses need to be above 10^{14} GeV.

Numerical results support the viability of the scenario.

Abstract

We propose a new leptogenesis scenario in which the lepton asymmetry and matter particles are simultaneously generated due to the coherent oscillating Higgs background. To demonstrate the possibility of our scenario, we consider the type-I seesaw model as an illuminating example and show the numerical analysis. In order to generate the required lepton number $|n_L/s| = 2.4 \times 10^{-10}$, we find that the scales of the Higgs background oscillation and the lightest right-handed neutrinos mass are required to be higher than $10^{14}$ GeV