NLO Higgs Effective Field Theory and kappa-framework

TL;DR

This paper develops a comprehensive Effective Field Theory framework at NLO to analyze deviations from the Standard Model, extending the kappa-framework for more precise new physics studies.

Contribution

It introduces a consistent EFT approach at NLO that extends the kappa-framework to better study Standard Model deviations with higher precision.

Findings

Framework allows systematic inclusion of higher-dimensional operators

Extends the kappa-framework to NLO accuracy

Enables more precise tests of new physics effects

Abstract

A consistent framework for studying Standard Model deviations is developed. It assumes that New Physics becomes relevant at some scale beyond the present experimental reach and uses the Effective Field Theory approach by adding higher-dimensional operators to the Standard Model Lagrangian and by computing relevant processes at the next-to-leading order, extending the original kappa-framework.