Low-Energy Effective Field Theory below the Electroweak Scale: dimension-8 operators

We construct a complete basis of dimension-8 operators in the Low-Energy Effective Field Theory below the Electroweak Scale (LEFT). We find there are 35058 dimension-8 operators in the LEFT for two generations of up-type quarks and three generations of down-type quarks, charged leptons, and left-handed neutrinos. The existence of this operator basis is a necessary prerequisite for matching to the Standard Model Effective Field Theory at the dimension-8 level.

Automated summary

In the Low-Energy Effective Field Theory below the Electroweak Scale, researchers have constructed a complete basis of dimension-8 operators for various particle types. The existence of these operators is a necessary prerequisite for matching to the Standard Model Effective Field Theory at the dimension-8 level.