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 (5)

• Precision Measurements of Higgs Couplings: Implications for New Physics Scales
• Limitations and Opportunities of Off-Shell Coupling Measurements
• Two-Loop Renormalization in the Standard Model Part III: Renormalization Equations and their Solutions
• Two-Loop Renormalization in the Standard Model Part I: Prolegomena
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Cited by in corpus (3)

• Constraints on the Higgs boson width from off-shell production and decay to Z-boson pairs
• Off-shell effects in Higgs processes at a linear collider and implications for the LHC
• Off-shell effects in Higgs decays to heavy gauge bosons and signal-background interference in Higgs decays to photons at a linear collider