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Peer-reviewedCC BY 4.0Journal of High Energy Physics

Early Universe production of W bosons in neutrino decays

  • Amalia Dariana Fodor1
  • Andru Mihai Buga1
  • Cosmin Crucean1
  1. 1West University of Timişoara
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Abstract

A bstract : In this paper we study, via perturbative methods, the rates of production of W bosons emitted in neutrino decays during the early stages of the Universe. We compute the transition amplitude corresponding to the first order of de Sitter electroweak perturbation theory and study its various limiting cases. The transition rates are derived using minimal subtraction and dimensional regularization. In the end we attempt to obtain the density number of W bosons produced in perturbative transitions in de Sitter spacetime, using the rates obtained in this paper and in previous ones, and analyze the density number with respect to the particle momenta and renormalisation mass μ .

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Cite

BibTeXRIS
BibTeX
@article{fodor2026early,
  title = {{Early Universe production of W bosons in neutrino decays}},
  author = {Amalia Dariana Fodor and Andru Mihai Buga and Cosmin Crucean},
  journal = {Journal of High Energy Physics},
  year = {2026},
  month = oct,
  doi = {10.1007/jhep10(2026)141},
  url = {https://link.springer.com/article/10.1007/JHEP10(2026)141},
  note = {CC BY 4.0},
}
RIS
TY  - JOUR
TI  - Early Universe production of W bosons in neutrino decays
AU  - Amalia Dariana Fodor
AU  - Andru Mihai Buga
AU  - Cosmin Crucean
PY  - 2026
DA  - 2026/10/14
JO  - Journal of High Energy Physics
DO  - 10.1007/jhep10(2026)141
UR  - https://link.springer.com/article/10.1007/JHEP10(2026)141
AB  - A bstract : In this paper we study, via perturbative methods, the rates of production of W bosons emitted in neutrino decays during the early stages of the Universe. We compute the transition amplitude corresponding to the first order of de Sitter electroweak perturbation theory and study its various limiting cases. The transition rates are derived using minimal subtraction and dimensional regularization. In the end we attempt to obtain the density number of W bosons produced in perturbative transitions in de Sitter spacetime, using the rates obtained in this paper and in previous ones, and analyze the density number with respect to the particle momenta and renormalisation mass μ .
SN  - 1029-8479
ER  -