Karlsruhe 2024 – scientific programme
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T: Fachverband Teilchenphysik
T 81: Search for new particles 5 (SUSY)
T 81.7: Talk
Thursday, March 7, 2024, 17:30–17:45, Geb. 20.30: 1.067
Not so inelastic Dark Matter — •Giovani Dalla Valle Garcia1, Felix Kahlhoefer2, Thomas Schwetz1, and Maksym Ovchynnikov1,3 — 1Institut für Astroteilchen Physik, Karlsruher Institut für Technologie (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany — 2Institute for Theoretical Particle Physics (TTP), Karlsruhe Institute of Technology (KIT), D-76131 Karlsruhe, Germany — 3Instituut-Lorentz, Leiden University, Niels Bohrweg 2, 2333 CA Leiden, The Netherlands
Models of inelastic (or pseudo-Dirac) dark matter commonly assume an accidental symmetry between the left-handed and right-handed mass terms in order to suppress diagonal couplings. Here we point out that this symmetry is unnecessary, because for Majorana fermions the diagonal couplings are in fact not strongly constrained. Removing the requirement of such an accidental symmetry in fact relaxes the relic density constraint, because additional annihilation modes can contribute, leading to larger viable parameter space. We discuss how the sensitivity of searches for both long-lived particles and missing energy signatures is modified in such a set-up, and explore the relevance of events with two long-lived particles.
Keywords: Dark matter; Colliders; dark photon; displaced vertices; BSM