Speaker
Description
Several Dark Sector models predict the existence of particles with macroscopic life-times and semi-visible jets (QCD-like jets which include stable Dark Sector particles). These can lead to final states with large missing transverse momentum recoiling against at least one highly energetic jet, a signature that is often referred to as a mono-jet.
The RECAST framework is used to re-interpret the recent ATLAS mono-jet search, based on 139 $\mathrm{fb^{-1}}$ of pp collisions collision data at $\sqrt{s} = 13$ TeV, in terms of Dark Sector models not studied in the original work. Complementary results for models involving long-lived particles are found with respect to dedicated searches. Results are also interpreted for the first time at ATLAS in terms of searches for semi-visible jets produced from a QCD-like parton shower.
