Speaker
Description
The nature of Dark Matter remains one of the deepest mysteries in particle physics and cosmology. While astrophysical and cosmological observations unambiguously confirm its existence, only its gravitational interaction has been established experimentally. Key properties of Dark Matter -- such as its mass, spin, stabilising symmetry, and non-gravitational couplings -- remain unknown.
This talk explores how complementary approaches at collider and non-collider experiments can shed light on the particle nature of Dark Matter. To facilitate this exploration, a systematic classification of Dark Matter candidates based on the spin of Dark Matter and mediators, as well as their electroweak hypercharge and isospin, will be discussed.
Going beyond Standard Model gauge symmetries, the Fermionic Portal Vector Dark Matter model will be presented. This framework features dark SU(2) gauge sector and has important implications for relic density, direct and indirect detection signals, and collider phenomenology, including novel signatures.
New directions in collider-based Dark Matter searches -- beyond the standard mono-X paradigm -- will also be highlighted. These include multi-lepton signatures and disappearing tracks. The talk will demonstrate how kinematic observables, such as invariant mass, missing transverse momentum, and angular distributions, can help differentiate between models and reveal information about the spin and interaction structure of Dark Matter. These collider signatures offer complementary sensitivity to non-collider experiments and provide a promising strategy for decoding the true nature of Dark Matter.
