CERN Accelerating science

Report number LHCHXSWG-2019-006
Title BSM Benchmarks for Effective Field Theories in Higgs and Electroweak Physics
Author(s) Marzocca, David (INFN Trieste Italy) ; Riva, Francesco (Universite de Geneve (CH)) ; Criado, J (CAFPE Granada (Spain)) ; Dawson, S (BNL (US)) ; De Blas Mateo, Jorge (Universita e INFN, Padova (IT)) ; Henning, Brian Quinn (CERN) ; Liu, D (Argonnne (US)) ; Low, I (Argonne (US)) ; Murphy, C (BNL (US)) ; Perez-Victoria Moreno De Barreda, Manuel Maria (Universidad de Granada (ES)) ; Santiago Perez, Jose (Universidad de Granada (ES)) ; Vecchi, Luca (EPFL - Ecole Polytechnique Federale Lausanne (CH))
Document contact Contact: David Marzocca
Imprint 2019-10-18. - mult. p.
Subject category Particle Physics - Phenomenology
Accelerator/Facility, Experiment CERN LHC
Keywords EFT ; Benchmarks ; Higgs ; Electroweak
Abstract Effective Field Theories (EFTs) capture effects from heavy dynamics at low en- ergy 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 coeffi- cients 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.
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 Záznam vytvorený 2019-10-18, zmenený 2020-02-07

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