Heavy Higgs signal-background interference in gg --> VV in the Standard Model plus real singlet

Abstract

For the Standard Model extended with a real scalar singlet field, the modification of the heavy Higgs signal due to interference with the continuum background and the off-shell light Higgs contribution is studied for gg --> ZZ, WW --> 4 lepton processes at the Large Hadron Collider. Interference effects can range from O(10%) to O(1) effects for integrated cross sections. Despite a strong cancellation between the heavy Higgs-continuum and the heavy Higgs-light Higgs interference, the full interference is clearly non-negligible and modifies the heavy Higgs line shape. A |M_VV - M_h2| < Gamma_h2 cut mitigates interference effects to O(10%) or less. A public program that allows to simulate the full interference is presented.

22 pages, 15 figures, 9 tables; added results and references, improved discussion, corrected v2 results (heavy top approximation was inadvertently active, results deviate by less than 5%), conclusions unchanged, updated gg2VV code, version to appear in EPJC

References in corpus (21)

• 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
• Parton distributions for the LHC
• LHC Phenomenology of an Extended Standard Model with a Real Scalar Singlet
• ZZ production at hadron colliders in NNLO QCD
• Complex Singlet Extension of the Standard Model
• Status of the Higgs Singlet Extension of the Standard Model after LHC Run 1
• $W^{+}{W}^{-}$ production at hadron colliders in NNLO QCD
• Singlet-Catalyzed Electroweak Phase Transitions and Precision Higgs Studies
• A second Higgs from the Higgs portal
• Exploring Resonant di-Higgs production in the Higgs Singlet Model
• New Physics in LHC Higgs boson pair production
• Delta r and the W-boson mass in the Singlet Extension of the Standard Model
• Search for the Standard Model Higgs boson in the decay channel H->ZZ(*)->4l with 4.8 fb-1 of pp collision data at sqrt(s) = 7 TeV with ATLAS
• Search for the standard model Higgs boson in the decay channel H to ZZ to 4 leptons in pp collisions at sqrt(s) = 7 TeV
• Measuring Hidden Higgs and Strongly-Interacting Higgs Scenarios
• Hiding the Higgs Boson with Multiple Scalars
• Jet Vetoes Interfering with H->WW
• Interference effects for Higgs-mediated Z-pair plus jet production
• Universal Doublet-Singlet Higgs Couplings and phenomenology at the CERN Large Hadron Collider
• On-shell interference effects in Higgs final states

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• LHC Benchmark Scenarios for the Real Higgs Singlet Extension of the Standard Model
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• Resonant Multi-Scalar Production in the Generic Complex Singlet Model in the Multi-TeV Region
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• Interference contributions to gluon initiated heavy Higgs production in the Two-Higgs-Doublet Model
• Higgs interference effects at the one-loop level in the 1-Higgs-Singlet extension of the Standard Model
• Interference Effects in Higgs production through Vector Boson Fusion in the Standard Model and its Singlet Extension
• Interference Effect on Resonance Studies in Searches of Heavy Particles
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