Approaching robust EFT limits for CP-violation in the Higgs sector

Abstract

Constraining CP-violating interactions in effective field theory (EFT) of dimension six faces two challenges. Firstly, degeneracies in the multi-dimensional space of Wilson coefficients have to be lifted. Secondly, quadratic contributions of CP-odd dimension six operators are difficult to disentangle from squared contributions of CP-even dimension six operators and from linear contributions of dimension eight operators. Both of these problems are present when new sources of CP-violation are present in the interactions between the Higgs boson and heavy strongly-interacting fermions. We show that degeneracies in the Wilson coefficients can be removed by combining measurements of Higgs-plus-two-jet production via gluon fusion with measurements of top-pair associated Higgs production. In addition, we demonstrate that the sensitivity of the analysis can be improved by exploiting the top-quark threshold in the gluon fusion process. Finally, we substantiate a perturbative argument about the validity of EFT by comparing the quadratic and linear contributions from CP-odd dimension six operators and use this to show explicitly that high statistics measurements at future colliders enable the extraction of perturbatively robust constraints on the associated Wilson coefficients.

13 pages, 10 figures, 2 tables, v2: published version

References in corpus (64)

• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• FeynRules 2.0 - A complete toolbox for tree-level phenomenology
• Dimension-Six Terms in the Standard Model Lagrangian
• Herwig++ Physics and Manual
• Automatized One-Loop Calculations in 4 and D dimensions
• Generating Feynman Diagrams and Amplitudes with FeynArts 3
• UFO - The Universal FeynRules Output
• The Anatomy of Electro-Weak Symmetry Breaking. II: The Higgs bosons in the Minimal Supersymmetric Model
• Herwig 7.0 / Herwig++ 3.0 Release Note
• Renormalization Group Evolution of the Standard Model Dimension Six Operators III: Gauge Coupling Dependence and Phenomenology
• Renormalization Group Evolution of the Standard Model Dimension Six Operators II: Yukawa Dependence
• Renormalization Group Evolution of the Standard Model Dimension Six Operators I: Formalism and lambda Dependence
• Rivet user manual
• The Anatomy of Electro-Weak Symmetry Breaking. I: The Higgs boson in the Standard Model
• A standard format for Les Houches Event Files
• VBFNLO: A parton level Monte Carlo for processes with electroweak bosons
• NLO QCD corrections to t anti-t H production in hadron collisions
• Determining the Structure of Higgs Couplings at the LHC
• Effective description of general extensions of the Standard Model: the complete tree-level dictionary
• Associated Higgs production with top quarks at the Large Hadron Collider: NLO QCD corrections
• Updated Global SMEFT Fit to Higgs, Diboson and Electroweak Data
• The SMEFTsim package, theory and tools
• Measurements of Higgs boson properties in the diphoton decay channel with 36 fb${}^{-1}$ of $pp$ collision data at $\sqrt{s}=13$ TeV with the ATLAS detector
• Anomalous Higgs boson couplings in vector boson fusion at the CERN LHC
• Next-to-Leading Order Results for t-tbar-h Production at the Tevatron
• Constraints on CP-violating Higgs couplings to the third generation
• On the Validity of the Effective Field Theory Approach to SM Precision Tests
• Next-to-Leading order Higgs + 2 jet production via gluon fusion
• Gluon-fusion contributions to Higgs plus two-jet production
• Very boosted Higgs in gluon fusion
• Two-Photon Decay Widths of Higgs Particles
• Mass Effects in the Higgs-Gluon Coupling: Boosted vs Off-Shell Production
• The Gauge-Higgs Legacy of the LHC Run I
• Higgs + 2 jets via gluon fusion
• Probing Higgs couplings with high p_T Higgs production
• Higgs plus two jet production via gluon fusion as a signal at the CERN LHC
• Search for the Standard Model Higgs boson produced in association with top quarks and decaying into a $b\bar{b}$ pair in $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector
• Complete One-Loop Renormalization of the Higgs-Electroweak Chiral Lagrangian
• Probing top-partners in Higgs + jets
• Constraining CP-violating Higgs Sectors at the LHC using gluon fusion
• QCD Corrections to Production of Higgs Pseudoscalars
• Better Higgs-CP Tests Through Information Geometry
• Machine Learning Uncertainties with Adversarial Neural Networks
• Boosted Higgs Shapes
• Resolving the Higgs-Gluon Coupling with Jets
• Monte Carlo studies of the jet activity in Higgs + 2 jet events
• A set of top quark spin correlation and polarization observables for the LHC: Standard Model predictions and new physics contributions
• Measurement of inclusive and differential cross sections in the $H\to Z{Z}^{\ast }\to 4\ell$ decay channel in $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector
• Measuring Higgs CP and couplings with hadronic event shapes
• Probing the Top-Higgs Yukawa CP Structure in dileptonic $t\bar{t}h$ with $M_2$-Assisted Reconstruction
• Exploring the Anomalous Higgs-top Couplings
• Gauge fixing the Standard Model Effective Field Theory
• Effective Field Theory after a New-Physics Discovery
• Kinematical Limits on Higgs Boson Production via Gluon Fusion in Association with Jets
• Angles on CP-violation in Higgs boson interactions
• Loop Calculations with FeynArts, FormCalc, and LoopTools
• Constraining the Strength and CP Structure of Dark Production at the LHC: the Associated Top-Pair Channel
• Gluon-fusion contributions to Phi + 2 Jet production
• Resolving gluon fusion loops at current and future hadron colliders
• Higgs boson production in association with three jets via gluon fusion at the LHC: Gluonic contributions
• Higgs characterisation in the presence of theoretical uncertainties and invisible decays
• Determining the Quantum Numbers of Simplified Models in $t\bar{t}X$ production at the LHC
• On new physics searches with multidimensional differential shapes
• Higgs boson CP-properties of the gluonic contributions in Higgs plus three jet production via gluon fusion at the LHC

Cited by in corpus (16)

• Adversarially-trained autoencoders for robust unsupervised new physics searches
• $\mathbf{C}\mathbf{P}$ violation in Higgs-gauge interactions: from tabletop experiments to the LHC
• SMEFT analysis of vector boson scattering and diboson data from the LHC Run II
• Interpretable Deep Learning for Two-Prong Jet Classification with Jet Spectra
• Machine learning the Higgs boson-top quark CP phase
• Direct Higgs-top CP-phase measurement with $t\bar{t}h$ at the 14 TeV LHC and 100 TeV FCC
• Returning CP-Observables to The Frames They Belong
• IRC-safe Graph Autoencoder for unsupervised anomaly detection
• A Reduced basis for CP violation in SMEFT at colliders and its application to Diboson production
• Constraining SMEFT operators with associated $h\gamma$ production in Weak Boson Fusion
• Constraining CP violating operators in charged and neutral triple gauge couplings
• EFT Diagrammatica II: Tracing the UV origin of bosonic D6 CPV and D8 SMEFT operators
• Enhancing $CP$ Measurement of the Yukawa Interactions of Top-Quark at $e^{-}{e}^{+}$ Collider
• Investigating Bottom-Quark Yukawa Interaction at Higgs Factory
• Sensitivity to $\mathcal{C}\mathcal{P}$-violating effective couplings in the top-Higgs sector
• Prospect study for measurement of $Hb\bar{b}$ coupling at the LHC and FCC-hh