%0 Journal Article
%T The see-saw portal at future Higgs Factories
%A Barducci, D.
%A Bertuzzo, E.
%A Caputo, A.
%A Hernandez, P.
%A Mele, B.
%J Journal of High Energy Physics
%D 2021
%V 03
%N 3
%I Springer
%@ 1029-8479
%G English
%F Barducci_etal2021
%O WOS:000629645800001
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=4766), last updated on Tue, 13 Apr 2021 18:26:06 +0000
%X We consider an extension of the Standard Model with two right-handed singlet fermions with mass at the electroweak scale that induce neutrino masses, plus a generic new physics sector at a higher scale Lambda. We focus on the effective operators of lowest dimension d = 5, which induce new production and decay modes for the singlet fermions. We assess the sensitivity of future Higgs Factories, such as FCC-ee, CLIC-380, ILC and CEPC, to the coefficients of these operators for various center of mass energies. We show that future lepton colliders can test the cut-off of the theory up to Lambda similar or equal to 500-1000 TeV, surpassing the reach of future indirect measurements of the Higgs and Z boson widths. We also comment on the possibility of determining the underlying model flavor structure should a New Physics signal be observed, and on the impact of higher dimensional d = 6 operators on the experimental signatures.
%K Beyond Standard Model
%K Higgs Physics
%K Neutrino Physics
%R 10.1007/JHEP03(2021)117
%U https://arxiv.org/abs/2011.04725
%U https://doi.org/10.1007/JHEP03(2021)117
%P 117-32pp