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arXiv · 2209.13469

Probing right-handed neutrinos dipole operators

Daniele Barducci·Enrico Bertuzzo·Marco Taoso·Claudio Toni
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Abstract

We consider the minimal see-saw extension of the Standard Model with two right-handed singlet fermions $N_{1,2}$ with mass at the GeV scale, augmented by an effective dipole operator between the sterile states. We firstly review current bounds on this effective interaction from fixed-target and collider experiments as well as from astrophysical and cosmological observations. We then highlight the prospects for testing the decay $N_2 \to N_1 \gamma$ induced by the dipole at future facilities targeting long lived particles such as ANUBIS, CODEX-b, FACET, FASER 2, MAPP and SHiP.

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Daniele Barducci, Enrico Bertuzzo, Marco Taoso, Claudio Toni. 2022-09-27. Probing right-handed neutrinos dipole operators. https://doi.org/10.1007/jhep03(2023)239

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