Conveners
Submitted talks: Submitted talks
- Simon Platzer (University of Graz (AT))
- Richard Ruiz (Institute of Nuclear Physics (IFJ) PAN)
Submitted talks
- Richard Ruiz (Institute of Nuclear Physics (IFJ) PAN)
- Simon Platzer (University of Graz (AT))
Submitted talks: Submitted talks
- Richard Ruiz (Institute of Nuclear Physics (IFJ) PAN)
Since the late 1970ies/early 1980ies it is known that subtle field-theoretical aspects of gauge symmetry require a treatment of the (electro)weakly interacting particles going beyond standard perturbation theory. This is possible by augmenting perturbation theory by the Fröhlich-Morchio-Strocchi mechanism, which primarily affects the asymptotic initial states and final states. This has been...
In 2023, the ATLAS experiment published the first differential cross-section measurement of same-charged W-boson scattering – an essential process for understanding electroweak symmetry breaking. Since W-bosons gain their mass and, consequently, their longitudinal polarization through the Higgs mechanism, studying the scattering of longitudinally polarized W-bosons offers a promising way to...
The production of Z bosons via vector boson fusion (VBF) is a standard candle process for probing Monte Carlo models as it can be easily compared with available real data. Accurate theoretical predictions for this process are essential, particularly when interfacing with parton shower models like Dipole and Vincia implemented in PYTHIA8. This presentation will synthesize findings from recent...
Fully hadronic decays of pairs of vector bosons (WW, ZZ, WZ) into large-R jets may be very sensitive to currently undiscovered phenomena. As weak bosons are able to interact with spin-0, spin-1 and spin-2 particles, they act as a good tool for probing new physics beyond the Standard Model. Due to the large branching fraction of bosons to hadrons, studying the hadronic channels is advantageous,...
Purely bosonic sources of CP violation (CPV) in typical extensions of the Standard Model (SM) scalar sector manifest in a series of tell-tale triboson couplings. The simultaneous observation of specific subsets among these couplings constitutes a robust and purely bosonic signal of CPV. In this work, we analyze the present and HL-LHC era observational prospects of such signals in the minimal...
Investigation for exotic decays of the scalar boson into a pair of light CP-even scalar particles, $ p p\to H_2 V \to H_1 H_1$, where the $H_1$-boson promptly decays into b-quarks and has a mass in the range of $20-60$ GeV, is presented within the framework of the Two Real Singlet Model (TRSM). This model extends the Standard Model by introducing two real scalar singlets that interact with...
First generation quark Yukawa couplings are notoriously difficult to measure. Various proposals for their measurement is based on multi-boson production such as Higgs pair production, Higgs off-shell production or triple V production. Those probes will not be able though to probe modifications below factors of order hundred. Given this in this talk, I will discuss how large the light quark...
In searches for beyond the Standard Model (BSM) Physics, bottom-up effective field theories (EFTs) such as the Standard Model EFT (SMEFT) and Higgs EFT (HEFT) have become crucial theoretical tools. Besides specifying their particle content and the respective symmetries on which the higher-dimensional operators are built, the choice of a power counting in a small parameter is the third...
Data collected during Run 3 of the LHC will allow more precise studies of VBS processes and calculation of new limits on anomalous Quartic Gauge Couplings within the framework of SMEFT with dimension-8 operators. Within the SMEFT framework, the total cross section can be expressed as a sum of three components: the purely SM term, the interference between SM and EFT amplitudes, and the purely...
Exotic Higgs decays are among the most promising areas to be explored at the High Luminosity Large Hadron Collider, given the unprecedentedly large amount of the Standard Model-like Higgs bosons that will be produced. In this context, we introduce a new search channel where a Higgs boson with a mass of 125 GeV decays to a Z boson and a light pseudoscalar (a), in the final state with two muons...
This study investigates the H + b + jets signature in proton-proton collisions to explore the structure of the $Hb\bar{b}$ couplings, with a focus on Higgs boson decays into photon pairs. The analysis includes both reducible and irreducible backgrounds, along with realistic simulations of the detector. Using multivariate techniques, especially Boosted Decision Trees (BDTs), kinematic variables...
A detailed double Higgs event simulation in the context of EFT models (HEFT and SMEFT) would impose unfeasible burden on computing resources to sample the parameter space densely enough. This talk focuses on developing techniques to model/parametrize the modifications of the cross section and the kinematics for double Higgs production in the whole parameter space of HEFT and SMEFT models, by...
