Better Higgs-CP Tests Through Information Geometry

Abstract

Measuring the CP symmetry in the Higgs sector is one of the key tasks of the LHC and a crucial ingredient for precision studies, for example in the language of effective Lagrangians. We systematically analyze which LHC signatures offer dedicated CP measurements in the Higgs-gauge sector, and discuss the nature of the information they provide. Based on the Fisher information measure, we compare the maximal reach for CP-violating effects in weak boson fusion, associated ZH production, and Higgs decays into four leptons. We find a subtle balance between more theory-independent approaches and more powerful analysis channels, indicating that rigorous evidence for CP violation in the Higgs-gauge sector will likely require a multi-step process.

27 pages, 8 figures

References in corpus (29)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• Evidence for the Higgs-boson Yukawa coupling to tau leptons with the ATLAS detector
• Anomalous Higgs boson couplings in vector boson fusion at the CERN LHC
• Precision Measurements of Higgs Couplings: Implications for New Physics Scales
• Higgs characterisation at NLO in QCD: CP properties of the top-quark Yukawa interaction
• Performance of the CMS missing transverse energy reconstruction in pp data at sqrt(s) = 8 TeV
• Aspects of CP violation in the HZZ coupling at the LHC
• Determining the CP parity of Higgs bosons at the LHC in their tau decay channels
• Constraints on anomalous Higgs boson couplings using production and decay information in the four-lepton final state
• Constraining CP-violating Higgs Sectors at the LHC using gluon fusion
• Resolving the Higgs-Gluon Coupling with Jets
• Higgs CP Properties From Early LHC Data
• Measuring spin and CP from semi-hadronic ZZ decays using jet substructure
• Exploring the Anomalous Higgs-top Couplings
• The Higgs boson at high $p_T$
• Extracting Higgs boson couplings using a jet veto
• Stop on Top
• Maximum Significance at the LHC and Higgs Decays to Muons
• Jet substructure and probes of CP violation in Vh production
• CP-violating HWW couplings at the Large Hadron Collider
• Polarized WW Scattering on the Higgs Pole
• Deep learning approach to the Higgs boson CP measurement in H to tau tau decay and associated systematics
• Anomalous Higgs Couplings at an $e\gamma$ Collider
• Parity-Odd Asymmetries in W-Jet Events at the Tevatron
• Angular asymmetries as a probe for anomalous contributions to HZZ vertex at the LHC
• Perturbative Higgs CP violation, unitarity and phenomenology
• Learning from the New Higgs-like Scalar before It Vanishes

Cited by in corpus (43)

• Updated Global SMEFT Fit to Higgs, Diboson and Electroweak Data
• Constraining Effective Field Theories with Machine Learning
• A Guide to Constraining Effective Field Theories with Machine Learning
• The Gauge-Higgs Legacy of the LHC Run II
• Higgs Pair Production at Future Hadron Colliders: From Kinematics to Dynamics
• Higgs Physics: It ain't over till it's over
• Test of CP invariance in vector-boson fusion production of the Higgs boson in the $H\to \tau \tau$ channel in proton$-$proton collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector
• SMEFT analysis of vector boson scattering and diboson data from the LHC Run II
• Towards the ultimate differential SMEFT analysis
• Exploring SMEFT in VH with Machine Learning
• Angles on CP-violation in Higgs boson interactions
• Constraining the CP structure of Higgs-fermion couplings with a global LHC fit, the electron EDM and baryogenesis
• Machine learning the Higgs boson-top quark CP phase
• Benchmarking simplified template cross sections in $WH$ production
• Constraining CP-violation in the Higgs-top-quark interaction using machine-learning-based inference
• Approaching robust EFT limits for CP-violation in the Higgs sector
• Returning CP-Observables to The Frames They Belong
• 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
• Combined SMEFT interpretation of Higgs, diboson, and top quark data from the LHC
• Constraining CP violating operators in charged and neutral triple gauge couplings
• Effective LHC measurements with matrix elements and machine learning
• Investigating the fluxes and physics potential of LHC neutrino experiments
• Landscaping CP-violating BSM scenarios
• Improved Constraints on Effective Top Quark Interactions using Edge Convolution Networks
• Machine-enhanced CP-asymmetries in the Higgs sector
• Back to the Formula -- LHC Edition
• EFT Diagrammatica II: Tracing the UV origin of bosonic D6 CPV and D8 SMEFT operators
• A new evaluation of the $HZZ$ coupling: direct bounds on anomalous contributions and $CP$ violating effects via a new asymmetry
• Four lepton production and the accuracy of QED FSR
• Higgs Boson Contributions to the Electron Electric Dipole Moment
• Simulation-based inference in the search for CP violation in leptonic WH production
• Higher-Order Corrections to Quantum Observables in $h\to W{W}^{\ast }$
• Test of $CP$ Invariance in Higgs Boson Vector-Boson-Fusion Production Using the $H\to \gamma \gamma$ Channel with the ATLAS Detector
• Anomalous anomalies from virtual black holes
• Strategic Plan for a Scientific Software Innovation Institute (S2I2) for High Energy Physics
• New method for fitting coefficients in standard model effective theory
• Staying on Top of SMEFT-Likelihood Analyses
• Higgs couplings in SMEFT via Zh production at the HL-LHC
• Probing the Higgs boson CP properties in vector-boson fusion production in the $H\to {\tau }^{+}{\tau }^{-}$ channel with the ATLAS detector
• Probe $CP$-violating $H\gamma \gamma$ coupling through interferometry
• Searches for new interactions within the SMEFT framework at present and future colliders
• Use and reuse of SMEFT