English

Affleck-Dine Dirac Leptogenesis

High Energy Physics - Phenomenology 2024-03-12 v2 Cosmology and Nongalactic Astrophysics High Energy Physics - Theory

Abstract

We present a minimal framework that realises successful Dirac Leptogenesis through the Affleck-Dine mechanism. A single right-handed neutrino and a neutrinophillic Higgs doublet are introduced to the Standard Model, which couple via a Yukawa interaction. The inflationary setting is induced by a combination of the two Higgs doublets, with their global symmetry violating interactions leading to a net charge generation via the Affleck-Dine mechanism. This simple Standard Model extension exhibits a unique and connected set of phenomenological implications including the resultant baryon asymmetry, inflationary predictions, cosmological implications, relic right-handed neutrinos, and its low energy phenomenology, while also being able to be embedded in various neutrino mass generating mechanisms.

Cite

@article{arxiv.2402.15245,
  title  = {Affleck-Dine Dirac Leptogenesis},
  author = {Neil D. Barrie and Chengcheng Han},
  journal= {arXiv preprint arXiv:2402.15245},
  year   = {2024}
}

Comments

6 pages, 2 figures

R2 v1 2026-06-28T14:58:13.577Z