Seminarium "Teoria cząstek elementarnych i kosmologia"

Many BSM models contain particles that are charged under both SM and Hidden Valley gauge groups, yet very little effort has been put into establishing their experimental signatures. In the first part of the talk I will provide a general overview of the collider phenomenology of spin 0 or 1/2 mediators with non-trivial gauge numbers under both the SM and a single new confining group, with a focus on direct production with semivisible jets. In the second part, I will discuss mechanisms for generating the correct dark matter relic abundance in Hidden Valley sectors with stable and unstable dark mesons, which in turn can reflect themselves into new exotic signatures at colliders.