Karlsruhe 2024 – scientific programme
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T: Fachverband Teilchenphysik
T 3: Search for new particles 2
T 3.5: Talk
Monday, March 4, 2024, 17:00–17:15, Geb. 20.30: 2.058
Signatures of strongly interacting dark sectors — •Nicoline Hemme and Felix Kahlhoefer — Institute for Theoretical Particle Physics (TTP), Karlsruhe Institute of Technology (KIT), Germany
The nature of dark matter continues to be one of the biggest unanswered questions in physics, and many years of null results from experiments looking for the postulated weakly interacting massive particle (WIMP) has sparked interest in other dark matter theories with new and unexplored signatures. One such example is the strongly interacting massive particle (SIMP), which is a composite dark matter particle made up of quark-like dark particles that interact via gluon-like mediators. In analogy to the Standard Model (SM), the dark pseudo-scalar meson, πD, is the lightest composite particle. It can be stabilised in the theory, thereby making it the dark matter candidate. The dark vector meson, ρD, can mix with SM particles, and if the mass of the ρD does not exceed twice the mass of the πD, as is favored by cosmological and astrophysical arguments, the ρD will decay into SM final states. The decays can lead to novel signatures in particle colliders such as the LHC and future beam-dump experiments. In this talk, I will present the model along with the arguments for the light ρD case and discuss some of these exciting signatures such as semi-visible jets and displaced vertices.
Keywords: Dark Sectors; SIMP; Semi-visible Jets; Displaced Vertices