Bounding the Higgs Width Using Effective Field Theory

Abstract

An interesting question is how present and future experiments will be able to probe the couplings of the Higgs boson and its intrinsic width at a high level of precision. There is a wide variety of beyond the Standard Model (BSM) theories where the Higgs couplings differ from the Standard Model (SM) ones by less that 10%. We take the SM as the theory of "light" degrees of freedom, i.e. d=4 operators and simulate the unknown extension of the SM by the most general set of d=6 operators. In particular we provide an explicit example of momentum-dependent modification of Higgs couplings.

Talk given at Loops and Legs in Quantum Field Theory, 27 April 2014 - 02 May 2014, Weimar, Germany

References in corpus (19)

• Dimension-Six Terms in the Standard Model Lagrangian
• Renormalization Group Evolution of the Standard Model Dimension Six Operators III: Gauge Coupling Dependence and Phenomenology
• Measurements of Higgs boson production and couplings in diboson final states with the ATLAS detector at the LHC
• Inadequacy of zero-width approximation for a light Higgs boson signal
• Constraining the Higgs boson width with ZZ production at the LHC
• Precision Measurements of Higgs Couplings: Implications for New Physics Scales
• Renormalization Group Scaling of Higgs Operators and Γ(h -> γγ)
• The Bases of Effective Field Theories
• Scaling and tuning of EW and Higgs observables
• Bounding the Higgs Boson Width Through Interferometry
• NLO Inspired Effective Lagrangians for Higgs Physics
• Limitations and Opportunities of Off-Shell Coupling Measurements
• On Gauge Invariance and Minimal Coupling
• Bounding the Higgs width at the LHC: complementary results from $H\to WW$
• Two-Loop Renormalization in the Standard Model Part III: Renormalization Equations and their Solutions
• Two-Loop Renormalization in the Standard Model Part I: Prolegomena
• Higgs Interference Effects in $\Pg \Pg \to \PZ\PZ$ and their Uncertainty
• Two-Loop Renormalization in the Standard Model Part II: Renormalization Procedures and Computational Techniques
• Constraints on Electroweak Effective Operators at One Loop

Cited by in corpus (13)

• Constraints on the Higgs boson width from off-shell production and decay to Z-boson pairs
• Measurements of the Higgs boson width and anomalous HVV couplings from on-shell and off-shell production in the four-lepton final state
• Constraints on the off-shell Higgs boson signal strength in the high-mass $ZZ$ and $WW$ final states with the ATLAS detector
• NLO Higgs Effective Field Theory and kappa-framework
• Limits on the Higgs boson lifetime and width from its decay to four charged leptons
• 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
• Through precision straits to next standard model heights
• Probing the top-quark width through ratios of resonance contributions of $e^{+}{e}^{-}\to W^{+}{W}^{-}b\bar{b}$
• Off-shell effects in Higgs processes at a linear collider and implications for the LHC
• Combining LEP and LHC to bound the Higgs Width
• The Standard Model from the LHC to future colliders: a contribution to the Workshop "What Next" of INFN
• Effective field theories and pseudo-observables in the quest for physics beyond the Standard Model
• Off-shell effects in Higgs decays to heavy gauge bosons and signal-background interference in Higgs decays to photons at a linear collider