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  • Letter
  • Open Access

RETRACTED: Dirac leptogenesis via scatterings

Julian Heeck1,*, Jan Heisig2,1,†, and Anil Thapa1,‡

  • 1Department of Physics, University of Virginia, Charlottesville, Virginia 22904-4714, USA
  • 2Institute for Theoretical Particle Physics and Cosmology, RWTH Aachen University, D-52056 Aachen, Germany

  • *heeck@virginia.edu
  • †heisig@virginia.edu
  • ‡wtd8kz@virginia.edu
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Phys. Rev. D 108, L031703 – Published 25 August, 2023Retraction Phys. Rev. D 108, 059902 (2023)

DOI: https://doi.org/10.1103/PhysRevD.108.L031703

Abstract

This article has been retracted: see Phys. Rev. D 108, 059902 (2023)

Leptogenesis typically requires the introduction of heavy particles whose out-of-equilibrium decays are essential for generating a matter-antimatter asymmetry, according to one of Sakharov’s conditions. We show that, in Dirac leptogenesis, scatterings between the light degrees of freedom—Standard Model particles plus Dirac neutrinos—suffice to generate the asymmetry. Sakharov’s conditions are satisfied because the right-handed neutrino partners are out of equilibrium. Consequently, heavy degrees of freedom never needed to be produced in the early Universe, allowing for a reheating temperature below their mass scale. We solve the Boltzmann equations and discuss the viable parameter space together with observational signatures such as an increased number of effective neutrinos in the early Universe as well as proton decay for some realizations.

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Erratum

Retraction: Dirac leptogenesis via scatterings [Phys. Rev. D 108, 031703 (2023)]

Julian Heeck, Jan Heisig, and Anil Thapa
Phys. Rev. D 108, 059902 (2023)

Article Text

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Outline

Information

Phys. Rev. D 108, L031703– Published 25 August, 2023Retraction: Phys. Rev. D 108, 059902 (2023)
  • Received 30 June 2023
  • Accepted 10 August 2023
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