Conveners
WG1: joined HTE & GLOB session: WG1: joined HTE & GLOB session
- Jorge de Blas Mateo (University of Granada)
WG1: joined HTE & GLOB session
- Chris Hays (Oxford University)
In this work the prospects for measurements of the top-quark couplings at future colliders are presented. Projections are presented for the high luminosity phase of the Large Hadron Collider and a future Higgs/electroweak/top factory electron-positron collider. Results are presented for the expected bounds on Wilson coefficients of the relevant SMEFT operators from a global fit to the...
In the CP-violating 2HDM, the CP-violating Higgs to fermions couplings can make an additional loop contribution on the Higgs to gauge bosons couplings. In order to address this aspect, we consider a generic model which has the effective CP-violation structure of the Higgs to gauge bosons couplings. We explore the effect of CP-violation term via the process $e^+ e^- \rightarrow HZ, Z\rightarrow...
Investigating the trilinear Higgs coupling $\lambda_{hhh}$ is crucial to determine the structure of the Higgs potential and to probe possible signs of physics beyond the Standard Model (SM). Focusing on the Two-Higgs-Doublet Model as a concrete example, I will discuss the calculation of the dominant two-loop contributions to $\lambda_{hhh}$, and I will show that this coupling can, in certain...
The trilinear coupling of the 125-GeV Higgs boson, $\lambda_{hhh}$, is one of the most important quantities to investigate in the future. It controls the shape of the Higgs potential, and in turn it determines the strength of the electroweak phase transition. It can also exhibit large deviations from its SM predicition, even in scenarios where New Physics is hidden from direct observation...
Establishing the shape of the Higgs potential is invaluable in paving a path forward for understanding the principles behind the Higgs mechanism. As the Higgs self-couplings are directly related to the Higgs potential, their measurements are crucial to either verify the SM mechanism for electroweak symmetry breaking sector or uncover new physics.
The physics programmes at future $e^+e^-$...
The effective field theory approach to the Standard Model, the SMEFT, has been used to study LHC data with ever increasing theoretical precision and sophistication recently. The explosion in the number of parameters in the SMEFT as a function of operator mass dimension, and the technical challenge or reformulating SM predictions consistently into the SMEFT were very serious problems for years....
The determination of the Higgs self-couplings are of primary importance in particle physics and cosmology. Here we will report on our investigation of the measurement of the Standard Model Higgs trilinear self-coupling parameter at the FCC-ee using single Higgs production channels, via its production cross section. We have introduced several Higgs boson production channels at $\sqrt{s} = 240,...
