https://doi.org/10.1140/epjc/s10052-025-14127-8
Regular Article - Theoretical Physics
A package for renormalization group running in the SMEFT with sterile neutrinos
1
Theoretical Physics Department, CERN, 1211, Geneva 23, Switzerland
2
Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405, Orsay, France
3
Theoretical Division, Los Alamos National Laboratory, 87545, Los Alamos, NM, USA
Received:
7
December
2024
Accepted:
26
March
2025
Published online:
8
May
2025
Sterile neutrinos are well-motivated beyond the Standard Model (BSM) particles. The Standard Model Effective Field Theory (SMEFT) augmented with these new fields is known as the 
SMEFT. We present the first code for solving the renormalization group equations (RGEs) of the SMEFT in an automated way. For this purpose, we have implemented the SMEFT as a new effective field theory (EFT) in the Wilson coefficient exchange format WCxf. Furthermore, we included anomalous dimensions depending on the gauge couplings and Yukawas in the python package wilson. This novel version of wilson allows a consistent inclusion of SMEFT renormalization group (RG) running effects above the electroweak (EW) scale in phenomenological studies involving sterile neutrinos. Moreover, this new release allows us to study EW, strong, and Yukawa running effects separately within the SMEFT.
© The Author(s) 2025
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