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Two-Loop Dimension-Six Effective Action from Integrating Out Heavy Scalars

A model-independent computation of the two-loop effective action up to dimension six obtained by integrating out heavy scalar fields with the Heat-Kernel method, evaluating the sunset, infinity, and counter-term diagrams. The dimension-six operators generated for heavy electroweak triplet and doublet scalars, including fermionic operators, are given in the SILH basis.

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Two-loop dimension Six Effective Action: Integrating Out Heavy Scalar Nilabhra Adhikary,a Jaydeb

This paper computes, for the first time, the model-independent two-loop effective action up to dimension six that results from integrating out heavy scalar fields, using the Heat-Kernel method to eva…