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Leptogenesis in a Majoron plus triplet model

Tim Brune*

  • *Contact author: tim.brune@tu-dortmund.de
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Phys. Rev. D 111, 115001 – Published 3 June, 2025

DOI: https://doi.org/10.1103/tbsx-7ffr

Abstract

We discuss leptogenesis in a Majoron model extended by a right-handed SU(2)L triplet fermion. We study several different parameter assignments and find that the interactions of neutrinos with the new particles in the Majoron plus triplet model can significantly alter the way leptogenesis proceeds. We show that for large parts of the considered parameter space, it is essential to solve the set of coupled Boltzmann equations for the evolution of the neutrinos and the additional particles rather than solving the Boltzmann equations for the neutrino evolution only.

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Phys. Rev. D 111, 115001– Published 3 June, 2025
  • Received 21 March 2025
  • Accepted 6 May 2025
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

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