Big Bang Nucleosynthesis and the Neutrino-Extended Standard Model Effective Field Theory
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arXiv
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| Autores principales: | , , , , |
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| Formato: | Preprint |
| Publicado: |
2026
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| _version_ | 1866918335973687296 |
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| author | Braat, Pieter de Vries, Jordy Groot, Jelle Günther, Julian Y. Klarić, Juraj |
| author_facet | Braat, Pieter de Vries, Jordy Groot, Jelle Günther, Julian Y. Klarić, Juraj |
| contents | We study the impact of light GeV-scale heavy neutral leptons (HNLs) on Big Bang nucleosynthesis (BBN) in the neutrino-extended Standard Model Effective Field Theory ($ν$SMEFT). We show that, based on very general considerations, BBN constraints complement laboratory searches at colliders, beam dumps, and neutrinoless double beta decay, by providing an upper bound on the cut-off scale of the effective field theory for HNL masses above $\sim$100 MeV. We identify target regions for future laboratory probes of the $ν$SMEFT parameter space that is bounded from above and below. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_12745 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Big Bang Nucleosynthesis and the Neutrino-Extended Standard Model Effective Field Theory Braat, Pieter de Vries, Jordy Groot, Jelle Günther, Julian Y. Klarić, Juraj High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics High Energy Physics - Experiment We study the impact of light GeV-scale heavy neutral leptons (HNLs) on Big Bang nucleosynthesis (BBN) in the neutrino-extended Standard Model Effective Field Theory ($ν$SMEFT). We show that, based on very general considerations, BBN constraints complement laboratory searches at colliders, beam dumps, and neutrinoless double beta decay, by providing an upper bound on the cut-off scale of the effective field theory for HNL masses above $\sim$100 MeV. We identify target regions for future laboratory probes of the $ν$SMEFT parameter space that is bounded from above and below. |
| title | Big Bang Nucleosynthesis and the Neutrino-Extended Standard Model Effective Field Theory |
| topic | High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2602.12745 |