BSM Benchmarks for Effective Field Theories in Higgs and Electroweak Physics

Authors :: Marzocca, D.
Riva, F.
Criado, J.
Dawson, S.
de Blas, J.
Henning, B.
Liu, D.
Murphy, C.
Perez-Victoria, M.
Santiago, J.
Vecchi, L.
Wang, Lian-Tao
Publication Year :: 2020
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.<br />Comment: 30 pages, 14 tables. LHC Higgs WG note