Neutrinoless double β decay with light sterile neutrinos: the contact terms

Abstract We study neutrinoless double-beta decay in extensions of the Standard Model that include n right-handed neutrino singlets, with masses m s below the GeV scale. Generalizing recently developed matching methods, we determine the m s dependence of the short-range nn → pp couplings that appear...

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Bibliographic Details
Main Authors: Vincenzo Cirigliano, Wouter Dekens, Sebastián Urrutia Quiroga
Format: Article
Language:English
Published: SpringerOpen 2025-04-01
Series:Journal of High Energy Physics
Subjects:
Online Access:https://doi.org/10.1007/JHEP04(2025)181
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