Vector-boson scattering (VBS) is a key process for probing the mechanism of electroweak symmetry breaking at the LHC. Precise measurements of VBS offer stringent tests of perturbative unitarity, enable the extraction of longitudinal gauge-boson polarisation components, and provide sensitivity to scenarios beyond the Standard Model. This presentation outlines the theoretical inputs required to...
We present a phenomenological study on the constraints of new physics using Simplified Template Cross Section (STXS) measurements of the Higgs transverse momentum distribution with H1jet and HiggsSignals. H1jet is a fast code that computes the transverse momentum distribution of a colour-singlet, allowing for quick scans over the parameter space in various Beyond-the-Standard Model (BSM)...
The structure of the Higgs boson remains one of its least precisely constrained properties. Possible $\mathcal{CP}$ violation in the Yukawa interaction between the Higgs boson and the top quark can be directly probed at the LHC through measurements of top-quark-associated Higgs production ($t\bar{t}H$). Current multivariate analysis strategies are typically optimized for specific signal...
Ten years after the discovery of the Higgs boson by the ATLAS and CMS experiments, the study of its properties remains one of the main targets of LHC physics.
Among these properties, the Higgs self-coupling parameters are of particular interest, as they are directly related to the shape of the Higgs potential: the SM Higgs Lagrangian contains two self-interaction terms corresponding to...
Future Higgs Factories will offer a clean environment to study $e^-e^+\rightarrow q \bar{q}$
processes ($q=d,u,s,c,b$) at various centre-of-mass energies, from the Z-pole up to the TeV scale. In this contribution, we focus on the case of $e^-e^+\rightarrow s \bar{s}$
at $\sqrt{s}=250$ GeV, using full simulation and reconstruction within the ILD detector concept to evaluate differential...
