Higher dimensional operators and LHC Higgs data : the role of modified kinematics

Abstract

The inclusion of higher-dimensional gauge invariant operators induces new Lorentz structures in Higgs couplings with electroweak gauge boson pairs. This in principle affects the kinematics of Higgs production and decay, thereby modifying the efficiencies of the experimental cuts compared to what simulations based on the standard model interactions yield. Taking some sample cases, we perform a rigorous analysis of how the efficiencies differ for various strengths of the additional operator vis-a-vis the standard model interactions, scanning over the values of both of them. While the response to cuts can be markedly different in some regions, we find that the sensitivity to new operator structures is relatively limited, so long as we remain confined to the 2-sigma regions around the best fit signal strengths measured at the Large Hadron Collider. We also show modifications to certain kinematical distributions including the new operators in the diphoton final state.

26 pages, 9 figures; v2: Some numerical factors corrected, conclusions unchanged. Comments and references added. Version to be published in Phys.Rev.D

References in corpus (17)

• 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
• PYTHIA 6.4 Physics and Manual
• FeynRules - Feynman rules made easy
• Evidence for the spin-0 nature of the Higgs boson using ATLAS data
• Measurements of Higgs boson production and couplings in diboson final states with the ATLAS detector at the LHC
• Higgs windows to new physics through d = 6 operators: Constraints and one-loop anomalous dimensions
• Towards the Ultimate SM Fit to Close in on Higgs Physics
• Measuring the Higgs Sector
• Constraining extra-fermion(s) from the Higgs boson data
• New Higgs interactions and recent data from the LHC and the Tevatron
• Precision studies of the Higgs boson decay channel H -> ZZ -> 4l with MEKD
• The apparent excess in the Higgs to di-photon rate at the LHC: New Physics or QCD uncertainties?
• Higgs-Boson Couplings Beyond the Standard Model
• Determination of Higgs-boson couplings (SFitter)
• Precision Higgs coupling measurements at the LHC through ratios of production cross sections
• Investigating Unitarity in Presence of Anomalous Couplings

Cited by in corpus (51)

• Probing the Standard Model with Higgs signal rates from the Tevatron, the LHC and a future ILC
• Complete Higgs Sector Constraints on Dimension-6 Operators
• Precision Measurements of Higgs Couplings: Implications for New Physics Scales
• Disentangling a dynamical Higgs
• The Universal One-Loop Effective Action
• The Gauge-Higgs Legacy of the LHC Run II
• CoDEx: Wilson coefficient calculator connecting SMEFT to UV theory
• Higgs production in association with a top-antitop pair in the Standard Model Effective Field Theory at NLO in QCD
• The complete HEFT Lagrangian after the LHC Run I
• An Effective Guide to Beyond the Standard Model Physics
• Confronting Higgcision with Electric Dipole Moments
• Electroweak Effective Operators and Higgs Physics
• Beyond Geolocating: Constraining Higher Dimensional Operators in $H\to 4\ell$ with Off-Shell Production and More
• Probing Electroweak Precision Physics via boosted Higgs-strahlung at the LHC
• Lilith: a tool for constraining new physics from Higgs measurements
• $ttH$ Anomalous Coupling in Double Higgs Production
• Towards the ultimate differential SMEFT analysis
• Higgs boson signal at complete tree level in the SM extension by dimension-six operators
• The Effective Standard Model after LHC Run I
• Benchmarking simplified template cross sections in $WH$ production
• Resolving the tensor structure of the Higgs coupling to $Z$-bosons via Higgs-strahlung
• Jet substructure and probes of CP violation in Vh production
• Status of MSSM Higgs Sector using Global Analysis and Direct Search Bounds, and Future Prospects at the HL-LHC
• Hilbert Series and Plethystics: Paving the path towards 2HDM- and MLRSM-EFT
• Decoupling Theoretical Uncertainties from Measurements of the Higgs Boson
• Matching Matters!
• Searching for a Heavy Higgs boson in a Higgs-portal B-L Model
• Constraining SMEFT operators with associated $h\gamma$ production in Weak Boson Fusion
• Precision SMEFT bounds from the VBF Higgs at high transverse momentum
• Effective Operator Bases for Beyond Standard Model Scenarios: An EFT compendium for discoveries
• Effective Higgs Lagrangian and Constraints on Higgs Couplings
• A fully differential SMEFT analysis of the golden channel using the method of moments
• Effective Theories with Dark Matter Applications
• Back to the Formula -- LHC Edition
• Constraints on CP-violating gauge-Higgs operators
• Anatomizing Exotic Production of the Higgs Boson
• Exploring anomalous $HZ\gamma$ couplings in $\gamma$-proton collisions at the LHC
• Distinguishing CP-odd couplings of the Higgs boson to weak boson pairs
• Investigating Unitarity in Presence of Anomalous Couplings
• Study of Higgs-gauge boson anomalous couplings through $e^{-}{e}^{+}\to W^{-}{W}^{+}H$ at ILC
• The Global Higgs Picture at 27 TeV
• Following the trail of new physics via VBF Higgs signal at the Large Hadron Collider
• Higgs Factories: Higgs-Strahlung versus W-Fusion
• Measuring Higgs self couplings in the presence of VVH and VVHH at the ILC
• Lepton flavor violating Higgs decay at $e^{+}{e}^{-}$ colliders
• Non-standard Higgs couplings in single Higgs boson production at the LHC and future linear collider
• Extended scalar sectors, effective operators and observed data
• High energy lepton colliders as the ultimate Higgs microscopes
• Constraining capability of $Z\gamma h$ production at the ILC
• Indian Contributions to LHC Theory
• Exploring anomalous $hb\bar{b}$ and $hb\bar{b}\gamma$ couplings in the context of the LHC and an $e^{+}{e}^{-}$ collider