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hep-ph2024
Complete Two-loop Renormalization Group Equation of the Weinberg Operator
Alejandro Ibarra, Nicholas Leister, Di Zhang
We calculate the renormalization group equation (RGE) of the lepton-number-violating Weinberg operator with the particle content of the Standard Model (SM), thus completing the set…
hep-ph2024
Renormalization Group Equations for the Dimension-7 SMEFT Operators
Di Zhang
In this talk, a Green's basis and a new physical basis for dimension-seven (dim-7) operators in the Standard Model effective field theory (SMEFT) are proposed. The reduction relati…
hep-ph2024
Threshold Effects on the Massless Neutrino in the Canonical Seesaw Mechanism
Di Zhang
In this work, we revisit the one-loop renormalization group equations (RGEs) among non-degenerate seesaw scales, i.e., threshold effects in the canonical seesaw mechanism, which ha…