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Complete one-loop matching of the type-I seesaw model onto the Standard Model effective field theory.
- Source :
-
Journal of High Energy Physics . Sep2021, Vol. 2021 Issue 9, p1-38. 38p. - Publication Year :
- 2021
-
Abstract
- In this paper, we accomplish the complete one-loop matching of the type-I seesaw model onto the Standard Model Effective Field Theory (SMEFT), by integrating out three heavy Majorana neutrinos with the functional approach. It turns out that only 31 dimension-six operators (barring flavor structures and Hermitian conjugates) in the Warsaw basis of the SMEFT can be obtained, and most of them appear at the one-loop level. The Wilson coefficients of these 31 dimension-six operators are computed up to O (M−2) with M being the mass scale of heavy Majorana neutrinos. As the effects of heavy Majorana neutrinos are encoded in the Wilson coefficients of these higher-dimensional operators, a complete one-loop matching is useful to explore the low-energy phenomenological consequences of the type-I seesaw model. In addition, the threshold corrections to the couplings in the Standard Model and to the coefficient of the dimension-five operator are also discussed. [ABSTRACT FROM AUTHOR]
- Subjects :
- *STANDARD model (Nuclear physics)
*NEUTRINO mass
*HERMITIAN structures
*NEUTRINOS
Subjects
Details
- Language :
- English
- ISSN :
- 11266708
- Volume :
- 2021
- Issue :
- 9
- Database :
- Academic Search Index
- Journal :
- Journal of High Energy Physics
- Publication Type :
- Academic Journal
- Accession number :
- 153096858
- Full Text :
- https://doi.org/10.1007/JHEP09(2021)163