Seminarium Teorii Oddziaływań Elementarnych

I will present a comprehensive overview of relic density predictions and LHC phenomenology of dark matter models featuring coannihilation with a colored partner in various representations of SU(3). Such models offer a perfect benchmark for discussing how well will the LHC perform in testing thermal dark matter scenarios and whether future colliders will be able to cover the entire relic density motivated parameter space. Several effects relevant for the correct derivation of theory predictions will be discussed – the Sommerfeld enhancement, bound state formation, thermal equilibrium constraints and lifetime of colored dark sector particles.