Many forms of experimental evidence point to the existence of Dark Matter within the universe. As of yet, however, it's particle nature has not been discovered. Presented will be an overview of run-2 searches for Dark Matter at the ATLAS detector. The focus of the these studies are based on simplified signal models, moving away from the EFT based approach during run-1. An overview of such...
Searches in CMS for dark matter in final states with invisible particles recoiling against visible states are presented. Various topologies and kinematic variables are explored, including jet substructure as a means of tagging heavy bosons. The focus of the talk is the recent results obtained using data collected at Run-II of the LHC.
Assume that dark matter couples mostly to the top-quark. This hypothesis is well motivated in models with scalar mediators, where flavor-hierarchical couplings to quarks prevent large flavor-changing neutral currents. In this talk, we discuss searches for dark matter produced in association with top-quarks at the LHC. We propose single-top-associated production as a new search channel for dark...
Dark matter (DM) particles that belong to a multiplet of the standard model (SM) weak interactions are challenging to probe in direct detection experiments due to loop-suppressed cross-sections, while indirect detection is a promising avenue if a single particle species saturates the DM relic density. There is, however, a large range of the DM particle mass where it constitutes only a fraction...
I will discuss LHC phenomenology of dark matter "candidates" which decay invisibly inside the detectors, proposing to test for this possibility by studying the effect of particle widths on the observable invariant mass distributions of the visible particles seen in the detector. I consider the simplest non-trivial case of a two-step two-body cascade decay and derive analytically the shapes of...
We explore the possibility that bound states involving dark matter particles could be detected by resonance searches at the LHC, and the generic implications of such scenarios for indirect and direct detection. We demonstrate that resonance searches are complementary to mono-jet searches and can probe dark matter masses above 1 TeV with current LHC data. We argue that this parameter regime,...
In this talk, I will discuss the phenomenology of dark matter bound states at the LHC. Dark matter particles could form bound states due to the self-interaction mediated by dark force carriers. For example, we find bound state formation in large parameter space of the self-interacting dark matter (SIDM) model that explains the small scale structure problems in astrophysical observations. The...
