30'+15'
30' + 15'
20'+10'
20'+10'
We present a fully analytic calculation of the leading-order one-loop amplitude for triple Higgs production via gluon fusion, gg to HHH, retaining full dependence on the mass of the heavy quark circulating in the loop. This amplitude provides a direct probe of the triple and quartic Higgs self-couplings, the measurement of which is a central goal of current and future colliders. The amplitude...
We present early results from the reinterpretation of the ATLAS HHH search in CheckMATE and Rivet, including extensive validation material, and demonstrate how this can be used to place limits on a wider range of models than those studied by ATLAS.
Using the framework of the Higgs Effective Field Theory (HEFT), I will discuss multi-Higgs production via gluon-gluon fusion (ggF) and weak boson fusion (WBF). For ggF-induced multi-Higgs production, I will highlight the impact of one-loop HEFT modifications on the Higgs self-couplings and study their effects on the production rates. By including these one-loop radiative corrections and going...
Exploring the Higgs sector via multi-Higgs production searches is a main goal for run-3 and high-lumi LHC. Can these searches inform us about the electroweak phase transition and matter-antimatter asymmetry? We address this question in the context of the TRSM (Two-Real-Singlet Model), which has known benchmark points enhancing multi-Higgs production. We update the triple-Higgs production...
In this talk we will discuss the feasibility of detecting triple Higgs production at a 100 TeV proton-proton collider. The final state considered will be that where each Higgs decays into a bottom-anti bottom pair. The study will be done within the SM as well as considering anomalous couplings which can be induced by New Physical effects.
The excesses observed by CMS in the ττ and γγ channels around 95 GeV, together with the bbbar excess reported by the LEP collaboration in the same mass region, have sparked significant interest in the possibility of new physics beyond the Standard Model (BSM). Several BSM frameworks featuring a non-standard Higgs-like state lighter than 125 GeV have been proposed to explain the anomalies...
New sources of neutral scalar-mediated CP violation that arise in extended Higgs sectors can originate in the Yukawa sector or in the structure of the scalar potential. Most treatments in the literature focus on CP-violating Yukawa interactions of neutral scalars, which is an example of P-odd CP violation since it derives from the mixing of two C-even operators of opposite sign P. In contrast,...
30'+15'
This overview of the Monte Carlo (MC) simulation process at the four main experiments - ATLAS, CMS, ALICE, and LHCb - at the Large Hadron Collider (LHC) is provided in this talk. Given the complexity and noise of proton-proton collisions, simulated samples are essential for understanding and interpreting the experimental results, enabling precise measurements and searches for new physics. The...
