Probing Dark Jets from Higgs Decays at LHC
Published:Dec 31, 2025 12:00
•1 min read
•ArXiv
Analysis
This paper explores a novel search strategy for dark matter, focusing on a specific model where the Higgs boson decays into dark sector particles that subsequently produce gluon-rich jets. The focus on long-lived dark mesons decaying into gluons and the consideration of both cascade decays and dark showers are key aspects. The paper highlights the importance of trigger selection for detection and provides constraints on the branching ratios at the high-luminosity LHC.
Key Takeaways
- •The paper investigates a model where the Higgs boson decays into dark sector particles.
- •The focus is on long-lived dark mesons decaying into gluons, forming gluon-rich dark jets.
- •The study considers both cascade decays and dark showers as production mechanisms.
- •Trigger selection is crucial for detecting the signal.
- •Constraints on the Higgs branching ratio are provided for the high-luminosity LHC.
Reference
“The paper finds that appropriate trigger selection constitutes a crucial factor for detecting these signal signatures in both tracker system and CMS muon system. At the high-luminosity LHC, the exotic Higgs branching ratio to cascade decays (dark showers) can be constrained below $\mathcal{O}(10^{-5}-10^{-1})$ [$\mathcal{O}(10^{-5}-10^{-2})$] for dark meson proper lifetimes $c\tau$ ranging from $1$ mm to $100$ m.”