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Effective Field Theories

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Full-Text Articles in Physical Sciences and Mathematics

Anomalous Dimensions From Yukawa Couplings In Smneft: Four-Fermion Operators, Alakabha Datta, Jacky Kumar, Hongkai Liu, Danny Marfatia May 2021

Anomalous Dimensions From Yukawa Couplings In Smneft: Four-Fermion Operators, Alakabha Datta, Jacky Kumar, Hongkai Liu, Danny Marfatia

Faculty and Student Publications

The Standard Model Neutrino Effective Field Theory (SMNEFT) is the Standard Model Effective Field Theory (SMEFT) augmented with right-handed neutrinos. Building on our previous work, arXiv:2010.12109, we calculate the Yukawa coupling contributions to the one-loop anomalous dimension matrix for the 11 dimension-six four-fermion SMNEFT operators. We also present the new contributions to the anomalous dimension matrix for the 14 four-fermion SMEFT operators that mix with the SMNEFT operators through the Yukawa couplings of the right-handed neutrinos.

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Anomalous Dimensions From Gauge Couplings In Smeft With Right-Handed Neutrinos, Alakabha Datta, Jacky Kumar, Hongkai Liu, Danny Marfatia Feb 2021

Anomalous Dimensions From Gauge Couplings In Smeft With Right-Handed Neutrinos, Alakabha Datta, Jacky Kumar, Hongkai Liu, Danny Marfatia

Faculty and Student Publications

Standard Model Neutrino Effective Field Theory (SMNEFT) is an effective theory with Standard Model (SM) gauge-invariant operators constructed only from SM and right-handed neutrino fields. For the full set of dimension-six SMNEFT operators, we present the gauge coupling terms of the one-loop anomalous dimension matrix for renormalization group evolution (RGE) of the Wilson coefficients between a new physics scale and the electroweak scale. We find that the SMNEFT operators can be divided into five subsets which are closed under RGE. Our results apply for both Dirac and Majorana neutrinos. We also discuss the operator mixing pattern numerically and comment on …

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