Signal-background interference effects in Higgs-mediated diphoton production beyond NLO

Abstract

In this paper we consider signal-background interference effects in Higgs-mediated diphoton production at the LHC. After reviewing earlier works that show how to use these effects to constrain the Higgs boson total decay width, we provide predictions beyond NLO accuracy for the interference and related observables, and study the impact of QCD radiative corrections on the Higgs width determination. In particular, we use the so-called soft-virtual approximation to estimate interference effects at NNLO in QCD. The inclusion of these effects reduce the NNLO prediction for the total Higgs cross-section in the diphoton channel by about 1.7%. We study in detail the impact of QCD corrections on the Higgs-boson line-shape and its implications for the Higgs width extraction. Assuming an experimental resolution of about 150~MeV on interference-induced modifications of the Higgs-boson line-shape, our NNLO analysis shows that one could constrain the Higgs-boson total width to about 10-20 times its Standard Model value.

arXiv comment16 pages, 6 figures, 3 tables

References in corpus (48)

• 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
• LHAPDF6: parton density access in the LHC precision era
• Parton distributions from high-precision collider data
• Scattering Amplitudes with Open Loops
• An update on vector boson pair production at hadron colliders
• Three-jet cross sections to next-to-leading order
• OpenLoops 2
• A Higher Order Perturbative Parton Evolution Toolkit (HOPPET)
• Higher-Order Soft Corrections to Lepton Pair and Higgs Boson Production
• Inadequacy of zero-width approximation for a light Higgs boson signal
• Color singlet production at NNLO in MCFM
• Dynamical Threshold Enhancement and Resummation in Drell-Yan Production
• Measurements of properties of the Higgs boson decaying into the four-lepton final state in pp collisions at sqrt(s) = 13 TeV
• Higgs production in hadron collisions: soft and virtual QCD corrections at NNLO
• Constraining the Higgs boson width with ZZ production at the LHC
• Top, Higgs, Diboson and Electroweak Fit to the Standard Model Effective Field Theory
• Higgs boson gluon-fusion production at threshold in N3LO QCD
• Two-Loop Quark and Gluon Form Factors in Dimensional Regularisation
• Bounding the Higgs width at the LHC using full analytic results for gg -> 2e 2μ
• Two-Loop Amplitudes for Gluon Fusion into Two Photons
• A measurement of the Higgs boson mass in the diphoton decay channel
• Higgs production in gluon fusion beyond NNLO
• Predictions for diphoton production at the LHC through NNLO in QCD
• Virtual corrections to Higgs boson pair production in the large top quark mass limit
• Isolating a light Higgs boson from the di-photon background at the LHC
• Precision phenomenology with MCFM
• Bounding the Higgs Boson Width Through Interferometry
• Approximate N^3LO Higgs-boson production cross section using physical-kernel constraints
• Limitations and Opportunities of Off-Shell Coupling Measurements
• Resonance-continuum interference in the di-photon Higgs signal at the LHC
• Constraints on off-shell Higgs boson production and the Higgs boson total width in $ZZ\to 4\ell$ and $ZZ\to 2\ell 2\nu$ final states with the ATLAS detector
• Two-loop helicity amplitudes for diphoton plus jet production in full color
• Signal-background interference effects for $gg\to H\to W^{+}{W}^{-}$ beyond leading order
• Shift in the LHC Higgs diphoton mass peak from interference with background
• The Higgs width in the SMEFT
• Soft gluon resummation of Drell-Yan rapidity distributions: theory and phenomenology
• Interference of Higgs diphoton signal and background in production with a jet at the LHC
• Threshold resummation of Drell-Yan rapidity distributions
• Cuts for two-body decays at colliders
• Three-loop helicity amplitudes for diphoton production in gluon fusion
• Measurements of the Higgs boson inclusive and differential fiducial cross-sections in the diphoton decay channel with $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Interference in the $gg\to h\to \gamma \gamma$ On-Shell Rate and the Higgs Boson Total Width
• Higgs constraints from vector boson fusion and scattering
• A complete O(alpha_S^2) calculation of the signal-background interference for the Higgs diphoton decay channel
• Hiding a Higgs width enhancement from off-shell gg (--> h*) --> ZZ measurements
• Interference effects in the $H(\to \gamma \gamma )+2$ jets channel at the LHC
• Transverse-momentum resummation for the signal-background interference in the $H\to \gamma \gamma$ channel at the LHC

Cited by in corpus (3)

• On the approaches to threshold resummation of rapidity distributions for the Drell-Yan process
• Les Houches 2023 -- Physics at TeV Colliders: Report on the Standard Model Precision Wishlist
• Master Integrals for Electroweak corrections to $gg\to \gamma \gamma$ -- Light quark contributions