On-shell interference effects in Higgs final states
arXiv:1502.04678 · doi:10.1103/PhysRevD.91.074029
Abstract
Top quark loops in Higgs production via gluon fusion at large invariant final state masses can induce important interference effects in searches for additional Higgs bosons as predicted in, e.g., Higgs portal scenarios and the MSSM when the heavy scalar is broad or the final state resolution is poor. Currently, the limit setting as performed by both ATLAS and CMS is based on injecting a heavy Higgs-like signal neglecting interference effects. In this paper, we perform a study of such "on-shell" interference effects in and find that they lead to a width scheme-dependent modification of the signal strength. Including the continuum contributions to obtain e.g. the full final state, this modification is reduced to the 10% level in the considered intermediate mass range.
7 pages, 4 figures
References in corpus (69)
- 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
- Dimension-Six Terms in the Standard Model Lagrangian
- The Strongly-Interacting Light Higgs
- Renormalization Group Evolution of the Standard Model Dimension Six Operators III: Gauge Coupling Dependence and Phenomenology
- Renormalization Group Evolution of the Standard Model Dimension Six Operators II: Yukawa Dependence
- Renormalization Group Evolution of the Standard Model Dimension Six Operators I: Formalism and lambda Dependence
- The global electroweak fit at NNLO and prospects for the LHC and ILC
- Electroweak corrections to charged-current e+e- --> 4 fermion processes - technical details and further results
- Electroweak and QCD corrections to Higgs production via vector-boson fusion at the LHC
- Strong and electroweak corrections to the production of Higgs+2jets via weak interactions at the LHC
- A Minimal Spontaneously Broken Hidden Sector and its Impact on Higgs Boson Physics at the Large Hadron Collider
- Effective Lagrangian for a light Higgs-like scalar
- Naturally Light Hidden Photons in LARGE Volume String Compactifications
- Status of the Higgs Singlet Extension of the Standard Model after LHC Run 1
- Inadequacy of zero-width approximation for a light Higgs boson signal
- Constraining the Higgs boson width with ZZ production at the LHC
- Higgs windows to new physics through d = 6 operators: Constraints and one-loop anomalous dimensions
- Complete Higgs Sector Constraints on Dimension-6 Operators
- Exploring the Higgs portal
- Search for neutral MSSM Higgs bosons decaying to a pair of tau leptons in pp collisions
- Towards the Ultimate SM Fit to Close in on Higgs Physics
- Bounding the Higgs width at the LHC using full analytic results for gg -> 2e 2μ
- Constraints on the Higgs boson width from off-shell production and decay to Z-boson pairs
- Precision Measurements of Higgs Couplings: Implications for New Physics Scales
- Constraining anomalous Higgs interactions
- Renormalization Group Scaling of Higgs Operators and Γ(h -> γγ)
- Mass Effects in the Higgs-Gluon Coupling: Boosted vs Off-Shell Production
- Delta r and the W-boson mass in the Singlet Extension of the Standard Model
- The Higgs Singlet extension parameter space in the light of the LHC discovery
- Complete electroweak O(alpha) corrections to charged-current e+e- --> 4fermion processes
- A Bayesian view of the Higgs sector with higher dimensional operators
- Influence of strongly coupled, hidden scalars on Higgs signals
- Bounding the Higgs Boson Width Through Interferometry
- Finite Width Effects and Gauge Invariance in Radiative Production and Decay
- The Higgs Boson Lineshape
- Limitations and Opportunities of Off-Shell Coupling Measurements
- Resonance-continuum interference in the di-photon Higgs signal at the LHC
- Effective Theories and Measurements at Colliders
- Higgs Pseudo-Observables, Second Riemann Sheet and All That
- Taming the off-shell Higgs boson
- Gauge-Invariant Resummation Formalism for Two-Point Correlation Functions
- Bounding the Higgs width at the LHC: complementary results from
- Shift in the LHC Higgs diphoton mass peak from interference with background
- Beyond Geolocating: Constraining Higher Dimensional Operators in with Off-Shell Production and More
- On Gauge Invariance of Breit-Wigner Propagators
- Two-Loop Renormalization in the Standard Model Part III: Renormalization Equations and their Solutions
- Higgs CAT
- Higgs ultraviolet softening
- Interference effects for H --> WW/ZZ --> l anti-nu_l anti-l nu_l searches in gluon fusion at the LHC
- Higgs couplings: disentangling New Physics with off-shell measurements
- Effective Charge of the Higgs Boson
- Two-Loop Renormalization in the Standard Model Part I: Prolegomena
- Interference of Higgs diphoton signal and background in production with a jet at the LHC
- Probing the Higgs Couplings to Photons in at the LHC
- The Higgs Boson Lineshape and Perturbative Unitarity
- Inadequacy of zero-width approximation for a light Higgs boson signal
- The Social Higgs
- Boosting Higgs discovery - the forgotten channel
- Jet Vetoes Interfering with H->WW
- Searching for New Physics in the Three-Body Decays of the Higgs-like Particle
- Interference effects for Higgs-mediated Z-pair plus jet production
- Two-Loop Renormalization in the Standard Model Part II: Renormalization Procedures and Computational Techniques
- Dark Higgs Models at the 7 TeV LHC
- The Dimension Six Triple Gluon Operator in Higgs+Jet Observables
- Multiple Higgs-Portal and Gauge-Kinetic Mixings
- Single-W Production and Fermion-Loop Scheme: Numerical Results
- ATLAS and CMS hints for a mirror Higgs boson
- Coupling Extraction From Off-Shell Cross-sections
Cited by in corpus (16)
- LHC Benchmark Scenarios for the Real Higgs Singlet Extension of the Standard Model
- NLO Higgs Effective Field Theory and kappa-framework
- Heavy to light Higgs boson decays at NLO in the Singlet Extension of the Standard Model
- Studies of Dimension-Six EFT effects in Vector Boson Scattering
- Through precision straits to next standard model heights
- Heavy Higgs signal-background interference in gg --> VV in the Standard Model plus real singlet
- Probing couplings using boson polarization in production at hadron colliders
- Effective field theory and scalar extensions of the top quark sector
- Off-shell effects in Higgs processes at a linear collider and implications for the LHC
- Two Higgs bosons near 125 GeV in the NMSSM: beyond the narrow width approximation
- Interference effect on heavy Higgs resonance signal in γγand ZZ channels
- Higgs interference effects at the one-loop level in the 1-Higgs-Singlet extension of the Standard Model
- Interference Effect on Resonance Studies in Searches of Heavy Particles
- On interference effects in top-philic decay chains
- Off-shell effects in Higgs decays to heavy gauge bosons and signal-background interference in Higgs decays to photons at a linear collider
- Impact of New Physics on Momentum-Dependent Particle Widths and Propagators