A Review of $\mu \to eee$, $\mu \to e \gamma$ and $\mu N \to eN$ Conversion

Perrevoort, Ann-Kathrin; ,

doi:10.22323/1.445.0015

Proceedings of 21st Conference on Flavor Physics and CP Violation — PoS(FPCP2023) 2023

DOI: 10.22323/1.445.0015

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A Review of $\mu \to eee$, $\mu \to e \gamma$ and $\mu N \to eN$ Conversion

Ann-Kathrin Perrevoort

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2024

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Neutrino masses from new seesaw models: low-scale variants and phenomenological implications

Giarnetti,

Herrero-García,

Marciano

et al. 2024

Eur. Phys. J. C

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With just the Standard Model Higgs doublet, there are only three types of seesaw models that generate light Majorana neutrino masses at tree level after electroweak spontaneous symmetry breaking. However, if there exist additional TeV scalars acquiring vacuum expectation values, coupled with heavier fermionic multiplets, several new seesaw models become possible. These new seesaws are the primary focus of this study and correspond to the tree-level ultraviolet completions of the effective operators studied in a companion publication. We are interested in the genuine cases, in which the standard seesaw contributions are absent. In addition to the tree-level generation of neutrino masses, we also consider the one-loop contributions. Furthermore, we construct low-energy versions that exhibit a very rich phenomenology. Specifically, we scrutinise the generation of dimension-6 operators and explore their implications, including non-unitarity of the leptonic mixing matrix, non-universal $$Z-$$ Z - boson interactions, and lepton flavor violation. Finally, we provide (Generalised) Scotogenic-like variants that incorporate viable dark matter candidates.

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Neutrino masses from new seesaw models: low-scale variants and phenomenological implications

Giarnetti,

Herrero-García,

Marciano

et al. 2024

Eur. Phys. J. C

View full text Add to dashboard Cite

show abstract

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A Review of $\mu \to eee$, $\mu \to e \gamma$ and $\mu N \to eN$ Conversion

Cited by 1 publication

References 23 publications

Neutrino masses from new seesaw models: low-scale variants and phenomenological implications

Neutrino masses from new seesaw models: low-scale variants and phenomenological implications

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