Dark showers from sneaky dark matter Carmona Bermúdez, Adrián Elahi, Fatemeh Scherb, Christiane Schwaller, Pedro Axions and ALPs Dark Matter at Colliders Models for Dark Matter We present a minimal composite dark matter model, based on a SU(Nd) dark sector with nf dark quarks and a heavy t-channel mediator. For nf ≥ 4, the dark favor symmetry guarantees the stability of a subset of the dark pions, which serve as our dark matter candidates. Their relic abundance is determined by dark sector annihilation with the remaining dark pions, which are unstable and decay. Due to their degenerate masses, the annihilation cross section is suppressed at low temperatures, thereby avoiding stringent constraints from indirect detection and opening up the GeV mass window. The decaying dark pions are naturally long lived. We obtain limits on the model from semi-visible or emerging jet searches and estimate the reach of future probes. 2025-09-29T08:10:32Z 2025-09-29T08:10:32Z 2025-06-19 journal article Carmona, A., Elahi, F., Scherb, C. et al. Dark showers from sneaky dark matter. J. High Energ. Phys. 2025, 198 (2025). https://doi.org/10.1007/JHEP06(2025)198 https://hdl.handle.net/10481/106689 10.1007/JHEP06(2025)198 eng http://creativecommons.org/licenses/by/4.0/ open access Atribución 4.0 Internacional Springer