Abstract
In this paper we study a near-continuum dark matter model, in which dark sector consists of a tower of closely spaced states with weak-scale masses. We construct a five-dimensional model which naturally realizes this spectrum. The dark matter is described by a bulk field, which interacts with the brane-localized Standard Model sector via a Z portal. We then study collider signatures of this model. Near-continuum dark matter states produced in a collider undergo cascade decays, resulting in events with high multiplicity of jets and leptons, large missing energy, and displaced vertices. A custom-built Monte Carlo tool described in this paper allows for detailed simulation of the signal events. We present results of such simulations for the case of electron-positron collisions.
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Acknowledgments
We would like to thank Csaba Csaki, Sungwoo Hong, Gowri Kurup and Wei Xue for collaboration and useful discussions on Continuum Dark Matter models. We are also grateful to Ameen Ismail for helpful discussions. S.F. and M.P. are supported by the NSF grant PHY-2014071. S. L is supported by the Samsung Science & Technology Foundation under Project Number SSTF-BA2201-06.
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Ferrante, S., Lee, S.J. & Perelstein, M. Collider signatures of near-continuum dark matter. J. High Energ. Phys. 2024, 215 (2024). https://doi.org/10.1007/JHEP05(2024)215
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DOI: https://doi.org/10.1007/JHEP05(2024)215