Going beyond Top EFT
arXiv:2312.00670 · doi:10.1007/JHEP04(2024)107
Abstract
We present a new way to interpret Top Standard Model measurements going beyond the SMEFT framework. Instead of the usual paradigm in Top EFT, where the main effects come from tails in momenta distributions, we propose an interpretation in terms of new physics which only shows up at loop-level. The effects of these new states, which can be lighter than required within the SMEFT, appear as distinctive structures at high momenta, but may be suppressed at the tails of distributions. As an illustration of this phenomena, we present the explicit case of a UV model with a symmetry, including a Dark Matter candidate and a top-partner. This simple UV model reproduces the main features of this class of signatures, particularly a momentum-dependent form factor with more structure than the SMEFT. As the new states can be lighter than in SMEFT, we explore the interplay between the reinterpretation of direct searches for colored states and Dark Matter, and Top measurements made by ATLAS and CMS in the differential final state. We also compare our method with what one would expect using the SMEFT reinterpretation, finding that using the full loop information provides a better discriminating power.
arXiv comment27 pages, 12 figures. The datasets used to obtain all the results presented here as well as additional details are available in https://zenodo.org/records/10277973
References in corpus (31)
- The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
- DELPHES 3, A modular framework for fast simulation of a generic collider experiment
- Dimension-Six Terms in the Standard Model Lagrangian
- Generating Feynman Diagrams and Amplitudes with FeynArts 3
- UFO - The Universal FeynRules Output
- New Developments in FeynCalc 9.0
- Renormalization Group Evolution of the Standard Model Dimension Six Operators III: Gauge Coupling Dependence and Phenomenology
- Automatic spin-entangled decays of heavy resonances in Monte Carlo simulations
- FeynCalc 9.3: New features and improvements
- Fully differential NNLO computations with MATRIX
- Automatic evaluation of UV and R2 terms for beyond the Standard Model Lagrangians: a proof-of-principle
- Top, Higgs, Diboson and Electroweak Fit to the Standard Model Effective Field Theory
- Complete Higgs Sector Constraints on Dimension-6 Operators
- SModelS: a tool for interpreting simplified-model results from the LHC and its application to supersymmetry
- O new physics, where art thou? A global search in the top sector
- Top-quark pair hadroproduction at next-to-next-to-leading order in QCD
- Top-quark pair production at the LHC: Fully differential QCD predictions at NNLO
- A Proof of Concept for Matchete: An Automated Tool for Matching Effective Theories
- Non-Resonant Searches for Axion-Like Particles at the LHC
- NNLL resummation for stop pair-production at the LHC
- Constraining new physics with SModelS version 2
- Top-philic dark matter within and beyond the WIMP paradigm
- Top-quark electroweak interactions at high energy
- A SModelS interface for pyhf likelihoods
- The top quark legacy of the LHC Run II for PDF and SMEFT analyses
- Forbidden Dark Matter at the Weak Scale via the Top Portal
- SModelS v2.3: enabling global likelihood analyses
- Mapping the SMEFT to discoverable models
- Study of top quark dipole interactions in production associated with two heavy gauge bosons at the LHC
- Broadening the Reach of Simplified Limits on Resonances at the LHC
- Dark Matter from Electroweak Single Top Production