Integrating out heavy scalars with modified EOMs: matching computation of dimension-eight SMEFT coefficients
arXiv:2210.14761 · doi:10.1103/PhysRevD.107.055007
Abstract
The shift in focus towards searches for physics beyond the Standard Model (SM) employing model-independent Effective Field Theory (EFT) methods necessitates a rigorous approach to matching to guarantee the validity of the obtained results and constraints. The limits on the leading dimension-six EFT effects can be rather inaccurate for LHC searches that suffer from large uncertainties while exploring an extensive energy range. Similarly, precise measurements can, in principle, test the subleading effects of the operator expansion. In this work, we present an algorithmic approach to automatise matching computations for dimension-eight operators for generic scalar extensions with proper implementation of equations of motion. We devise a step-by-step procedure to obtain the dimension-eight Wilson coefficients (WCs) in a non-redundant basis to arrive at complete matching results. We apply this formalism to a range of scalar extensions of the SM and provide tree-level and loop-suppressed results. Finally, we discuss the relevance of the dimension-eight operators for a range of phenomenological analyses, particularly focusing on Higgs and electroweak physics.
2 figures, 20 tables. Version to be published in Phys.Rev.D
References in corpus (24)
- Gauge Singlet Scalars as Cold Dark Matter
- Top, Higgs, Diboson and Electroweak Fit to the Standard Model Effective Field Theory
- New Mechanism for Neutrino Mass Generation and Triply Charged Higgs Bosons at the LHC
- Effective four-fermion operators in top physics: a roadmap
- Scalar leptoquarks and the rare B meson decays
- The real singlet scalar dark matter model
- Measurements of production cross sections of WZ and same-sign WW boson pairs in association with two jets in proton-proton collisions at 13 TeV
- EWPD in the SMEFT to dimension eight
- Standard Model with a real singlet scalar and inflation
- Towards the renormalisation of the Standard Model effective field theory to dimension eight: Bosonic interactions I
- SMEFT analysis of vector boson scattering and diboson data from the LHC Run II
- Positivity bounds in the Standard Model effective field theory beyond tree level
- Integrating out heavy fields in the path integral using the background-field method: general formalism
- A Step Toward Model Comparison: Connecting Electroweak-Scale Observables to BSM through EFT and Bayesian Statistics
- Leptoquark Option for -meson Anomalies and Leptonic Signatures
- Search for new physics in top quark production with additional leptons in proton-proton collisions at 13 TeV using effective field theory
- Classifying Standard Model Extensions Effectively with Precision Observables
- One-loop Matching of the Type-II Seesaw Model onto the Standard Model Effective Field Theory
- Neutrino seesaw models at one-loop matching: Discrimination by effective operators
- Precision SMEFT bounds from the VBF Higgs at high transverse momentum
- SM EFT effects in Vector-Boson Scattering at the LHC
- EFT Diagrammatica II: Tracing the UV origin of bosonic D6 CPV and D8 SMEFT operators
- Effective field theory versus UV-complete model: vector boson scattering as a case study
- Flavorful Electroweak Precision Observables in the Standard Model Effective Field Theory