Dimension-8 Operators in the Standard Model Effective Field Theory

Understand

We present a complete basis of dimension-8 operators in the Standard Model Effective Field Theory.

• Attention is paid to operators that vanish in the absence of flavor structure.
• There are dimension-8 SMEFT 44,807 operators.
• We also briefly discuss a few aspects of phenomenology involving dimension-8 operators, including light-by-light scattering and electroweak precision data.