Journal
JOURNAL OF HIGH ENERGY PHYSICS
Volume -, Issue 9, Pages -Publisher
SPRINGER
DOI: 10.1007/JHEP09(2022)207
Keywords
Effective Field Theories; SMEFT; Sterile or Heavy Neutrinos
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Funding
- National Science Foundation of China [12022514, 11875003, 12047503]
- National Key Research and Development Program of China [2020YFC2201501, 2021YFA0718304]
- CAS Project for Young Scientists in Basic Research [YSBR-006]
- Key Research Program of the CAS [XDPB15]
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This article investigates the one-loop matching of type-I, -II, and -III seesaw models using the functional method and presents the results in both Green's and Warsaw bases. Although these models generate the same dimension-5 Weinberg operator, they can induce different types of dimension-6 effective operators that can be used for model discrimination. The study also finds significant threshold effects from one-loop matching, which allow for electroweak symmetry breaking radiatively in type-II seesaw but forbid it in type-I/-III models. An analytical criterion for such radiative symmetry breaking in type-II seesaw is derived. Furthermore, the indirect signatures from different types of dimension-6 operators at high-energy colliders, low-energy precision experiments, and forward physics facilities are investigated for model discrimination.
Using the functional method, one-loop matching of the type-I, -II and -III seesaw models are investigated and the results are presented in both the Green's and the Warsaw bases. Although these models generate the same dimension-5 Weinberg operator, they could induce quite different types of dimension-6 effective operators that can be utilized for model discrimination. We also find the threshold effects from one-loop matching could be significant, which turn out to allow triggering electroweak symmetry breaking radiatively in type-II seesaw while forbid that in type-I/-III models. An analytical criterion for such radiative symmetry breaking is also derived in type-II seesaw. Finally, we investigate the indirect signatures from different types of dimension-6 operators at high-energy colliders, low-energy precision experiments and forward physics facilities for model discrimination.
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