Many theories beyond the Standard Model predict new phenomena giving rise to multijet finalstates. These jets can originate from the decay of heavy resonances into Standard Model quarksor gluons, or from more complex decay chains involving dark-sector particles. Also of interestare resonant and non-resonant hadronic final states where jets stem from a dark sector, leadingto a diverse phenomenology depending on the interactions between dark and visible particles.This contribution summarises recent ATLAS results based on 13 TeV Run 2 data, highlightingthree complementary analyses targeting boosted light resonances, flavour-violating dark matter,and semi-visible jets.
Barakat et al. (Wed,) studied this question.