BSM Benchmarks for Effective Field Theories in Higgs and Electroweak Physics

TL;DR

This paper compiles and analyzes various Heavy Physics scenarios beyond the Standard Model, providing explicit Wilson coefficients for effective field theories relevant to Higgs and electroweak physics, aiding experimental and theoretical studies.

Contribution

It offers a comprehensive set of BSM scenarios with explicit EFT Wilson coefficients, facilitating interpretation and motivation for EFT analyses in Higgs and electroweak physics.

Findings

Explicit expressions for Wilson coefficients in various BSM scenarios

Classification of weakly and strongly coupled models

Guidance for experimental EFT studies

Abstract

Effective Field Theories (EFTs) capture effects from heavy dynamics at low energy and represent an essential ingredient in the context of Standard Model (SM) precision tests. This document gathers a number of relevant scenarios for heavy physics beyond the SM and presents explicit expressions for the Wilson coefficients in their low-energy EFT. It includes i) weakly coupled scenarios in which one or a few particles of different spins and quantum numbers interact linearly with the SM and generate EFT effects at tree-level, ii) scenarios where heavy particles interact quadratically whereupon the resulting EFT arises only at loop-level and iii) strongly coupled scenarios where the size of Wilson coefficients is controlled by symmetry arguments. This review aims at motivating experimental EFT studies in which only a subset of all possible EFT interactions is used, as well as facilitating the theoretical interpretation of EFT fits.