Abstract
The study of the couplings of the Higgs boson and of the top quark plays a preeminent role at the LHC, and could unveil the first signs of new physics. I will discuss the interplay of direct and indirect probes of certain classes of top and Higgs couplings. Including constraints from collider observables, precision electroweak tests, flavor physics, and electric dipole moments (EDMs), I will show that indirect probes are competitive, if not dominant, for both the CP-even and CP-odd top and Higgs couplings we considered. I will discuss the role of theoretical uncertainties, associated with hadronic and nuclear matrix elements, and indicate targets to further improve the constraining power of EDM experiments.
Highlights
The Standard Model (SM) of particle physics is a successful theory, that has been validated over a large range of energy scales
Its latest success is the discovery of the Higgs particle at the Large Hadron Collider (LHC) [1, 2], whose properties are in agreement with SM expectations [3], within the still sizable experimental uncertainties
If the scale of beyond the SM (BSM) physics is much larger than the electroweak scale, new physics might primarily manifest in deviations of the properties of SM particles from the SM expectations
Summary
The Standard Model (SM) of particle physics is a successful theory, that has been validated over a large range of energy scales. If the scale of BSM physics is much larger than the electroweak scale, new physics might primarily manifest in deviations of the properties of SM particles from the SM expectations In this talk I will focus on the Higgs boson and on the top quark. I will introduce a class of operators that modifies the Higgs and top interactions, and I will study the constraints on the real and imaginary part of their couplings, at high and low energy. This talk is based on Refs. [4,5,6]
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