IRN Terascale @ Montpellier

Session

Higgs and Electroweak

25 nov. 2025, 09:30

8. Theoretical Inputs for Vector-Boson Scattering Measurements at the LHC

Mathieu Pellen (University of Freiburg)

25/11/2025 09:30

Higgs

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...

11. Measurements and interpretations of $W^{\pm}Z$ production cross-sections in $pp$ collisions at $\sqrt{s}$= 13 TeV with the ATLAS detector

Léo Boudet

25/11/2025 09:55

Higgs

The study of $W^{\pm}Z$ diboson production is of great interest as an essential test of the Standard Model (SM) and as an effective tool for searching for new physics effect. This talk will present the latest ATLAS measurements of the integrated and differential cross-sections of the process $pp \to W^{\pm}Z$ in the leptonic decay modes with electrons and muons at an energy in the center of...

3. Constraints on new physics using Higgs pT STXS measurements with H1jet and HiggsSignals

Alexander Lind (INFN Laboratori Nazionali di Frascati (LNF))

25/11/2025 10:20

Higgs

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)...

10. CP-sensitive Simplified Template Cross Sections for ttH

Alberto Carnelli (LAPP (CNRS), CERN)

25/11/2025 11:15

Higgs

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...

6. Triple Higgs production at the LHC and ATLAS results

Carlo Pandini (LPSC)

25/11/2025 11:40

Higgs

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...

31. $e^-e^+\rightarrow s \bar{s}$ at $\sqrt{s}=250$ GeV in future linear colliders [from BSM]

Jesus Pedro MARQUEZ HERNANDEZ (IJCLAB (CNRS))

25/11/2025 12:05

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...

12. Triple Higgs production proton proton colliders

Gilberto Tetlalmatzi-Xolocotzi

Higgs

In this talk, we will discuss the feasibility of measuring the Higgs self-couplings through triple Higgs production at future proton–proton colliders. In particular, our study will focus on the 6 b final state. Moreover, we will explore the possibility of detecting extra scalars at the LHC as a result of an enhanced triple Higgs production cross section, with a particular emphasis on the Two...