Conveners
Flash Talks: 1
- Marcella Bona (Queen Mary University of London (UK))
Flash Talks: 2
- Jannicke Pearkes (University of Colorado Boulder (US))
e investigate the potential to search for semi-visible jets (SVJs) at the Large Hadron Collider (LHC) using initial-state radiation (ISR). Both photon ISR and jet ISR channels are considered, using a benchmark signal model with the decay of a leptophobic Z′ mediator forming two SVJs. We compare and extend several techniques to decompose the missing transverse momentum into per-jet...
The Hidden Valley scenario consists of a set of models where the Standard Model is accompanied by a Hidden Sector and connected with it via a heavy mediator or a weak coupling. If realised in nature, the Hidden Valley scenario may result in unusual and little-studied phenomena at the LHC. Under the assumption of a QCD-like confining dark sector, novel experimental signatures emerge,...
I will show how collider searches for long-lived particles (LLPs) can test the dynamics responsible for matter domination in the early universe. In particular I will focus on long-lived glueballs from a GeV-scale confining dark sector, of relevance for this workshop. After a summary of their cosmology, I will prove that searches of glueballs, from decays of the Higgs or other particles, test...
In this contribution, we will present our recent studies on the recasting of the different LHC darkQCD analyses using MadAnalysis5. The reinterpretation was done in the context of dark shower models focussing on semi-visible jet resonances.
We consider the prospect of the SM as a composite of a new fundamental fermionic sector ($q_{TC}$). Such scenarios can be considered as QCD-like, where the hadronization scale $\Lambda_{TC}\sim$ few TeV. The study of $q\bar q\rightarrow q_{TC}\bar q_{TC} $ at 100 TeV at FCC-hh has a direct analogue to the study of $e^+e^-\rightarrow q\bar q$ at around few GeV at LEP. While the latter...
Current search efforts for flavored dark sectors that couple to multiple SM quarks flavors has only included the coupling to isospin –½ SM quarks using the emerging jet signature. A natural extension to such models would be to change the coupling to isospin +½ SM quark. In particular, the coupling to SM top quarks allows for electroweak-like event selection and triggers to be used, opening...
The Higgs boson offers a unique portal to hidden sectors, enabling the study of Higgs-mediated dark showers (DS). These processes, characterized by multi-quark final states, present distinct yet elusive signatures due to their resemblance to QCD backgrounds. Using perturbative parton shower models, as detailed in recent theoretical benchmarks, we investigate DS phenomena initiated by the Higgs...
Dark showers arising from the Higgs coupling to a strongly confined dark
sector present a unique avenue for exploring new physics signatures.
Within the FCC-ee framework, this model is being studied,
highlighting the production of semi-visible jets (SVJs) enriched with
photons and leptons. These signatures, featuring displaced decays and
complex jet structures, demand tailored...
