Constraining CP-violating Higgs Sectors at the LHC using gluon fusion

Abstract

We investigate the constraints that the LHC can set on a 126 GeV Higgs boson that is an admixture of CP eigenstates. Traditional analyses rely on Higgs couplings to massive vector bosons, which are suppressed for CP-odd couplings, so that these analyses have limited sensitivity. Instead we focus on Higgs production in gluon fusion, which occurs at the same order in the strong coupling for both CP-even and -odd couplings. We study the Higgs plus two jet final state followed by Higgs decay into a pair of tau leptons. We show that using the 8 TeV dataset it is possible to rule out the pure CP-odd hypothesis in this channel alone at nearly 95\% C.L, assuming that the Higgs is CP-even. We also provide projected limits for the 14 TeV LHC run.

arXiv comment10 pages, 4 figures

References in corpus (58)

• 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
• PYTHIA 6.2 Physics and Manual
• New Generation of Parton Distributions with Uncertainties from Global QCD Analysis
• Event generation with SHERPA 1.1
• HIGGS BOSON PRODUCTION AT THE LHC
• Tuning Monte Carlo Generators: The Perugia Tunes
• Measurement of the properties of a Higgs boson in the four-lepton final state
• Measurements of Higgs boson production and couplings in diboson final states with the ATLAS detector at the LHC
• A standard format for Les Houches Event Files
• VBFNLO: A parton level Monte Carlo for processes with electroweak bosons
• Study of the mass and spin-parity of the Higgs boson candidate via its decays to Z boson pairs
• Determining the Structure of Higgs Couplings at the LHC
• On the spin and parity of a single-produced resonance at the LHC
• Evidence for the 125 GeV Higgs boson decaying to a pair of tau leptons
• A framework for Higgs characterisation
• Next-to-leading order jet distributions for Higgs boson production via weak-boson fusion
• Jet energy resolution in proton-proton collisions at sqrt(s) = 7 TeV recorded in 2010 with the ATLAS detector
• Identifying the Higgs Spin and Parity in Decays to Z Pairs
• A New Mass Reconstruction Technique for Resonances Decaying to di-tau
• CP-Violating MSSM Higgs Bosons in the Light of LEP 2
• Constraining anomalous HVV interactions at proton and lepton colliders
• Constraints on CP-violating Higgs couplings to the third generation
• Gluon-fusion contributions to Higgs plus two-jet production
• Very boosted Higgs in gluon fusion
• Prospective Analysis Spin- and CP-sensitive Variables in H -> ZZ -> l_1 l_1 l_2 l_2 with Atlas
• Higgs Precision (Higgcision) Era begins
• Disentangling Higgs-Top Couplings in Associated Production
• Higgs + 2 jets via gluon fusion
• Aspects of CP violation in the HZZ coupling at the LHC
• Higgs plus two jet production via gluon fusion as a signal at the CERN LHC
• Modified Higgs branching ratios versus CP and lepton flavor violation
• Higgs Quantum Numbers in Weak Boson Fusion
• Measuring CP Violation in $h\to {\tau }^{+}{\tau }^{-}$ at Colliders
• The couplings of the Higgs boson and its CP properties from fits of the signal strengths and their ratios at the 7+8 TeV LHC
• Determining the CP parity of Higgs bosons at the LHC in their tau decay channels
• Production of a Higgs Boson Plus Two Jets in Hadronic Collisions
• QCD Corrections to Production of Higgs Pseudoscalars
• How to pin down the CP quantum numbers of a Higgs boson in its tau decays at the LHC
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• Higgs characterisation via vector-boson fusion and associated production: NLO and parton-shower effects
• Resolving the Higgs-Gluon Coupling with Jets
• Monte Carlo studies of the jet activity in Higgs + 2 jet events
• Measuring Higgs CP and couplings with hadronic event shapes
• Higgs CP Properties From Early LHC Data
• Measuring spin and CP from semi-hadronic ZZ decays using jet substructure
• Higgs CP properties using the tau decay modes at the ILC
• QCD Corrections to Jet Correlations in Weak Boson Fusion
• Probing CP Violation in $h\to \gamma \gamma$ with Converted Photons
• On azimuthal spin correlations in Higgs plus jet events at LHC
• Hunting a light CP-violating Higgs via diffraction at the LHC
• CP Violation in Higgs Diphoton Decay in Models with Vectorlike Heavy Fermions
• Polishing a shiny Higgs with matrix elements
• Boosting Higgs discovery - the forgotten channel
• Gluon-fusion contributions to Phi + 2 Jet production
• Pseudoscalar Higgs Bosons at the LHC: Production and Decays into Electroweak Gauge Bosons Revisited
• Production of a Higgs pseudoscalar plus two jets in hadronic collisions

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