One-loop Matching for the Seesaw Model
Abstract
In this talk, we present the results of the complete one-loop matching of the seesaw model onto its low-energy effective theory by integrating out three right-handed neutrinos at the one-loop level. We find that there are 31 independent dimension-6 (dim-6) operators (barring flavor structures and Hermitian conjugates) in the Warsaw basis, and the standard-model couplings and the Wilson coefficient of the Weinberg operator acquire threshold corrections at the one-loop level. The complete Lagrangian up to dim-6 at the one-loop level is derived, which is indispensable for consistent explorations of the impact of heavy right-handed neutrinos at low energies.
Cite
@article{arxiv.2211.04397,
title = {One-loop Matching for the Seesaw Model},
author = {Di Zhang and Shun Zhou},
journal= {arXiv preprint arXiv:2211.04397},
year = {2022}
}
Comments
4 pages, 1 table; contribution to the Proceedings of the 41st International Conference on High Energy Physics (ICHEP2022)