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- Title
Multilepton dark matter signals.
- Authors
Aguilar-Saavedra, J. A.; Casas, J. A.; Quilis, J.; Ruiz de Austri, R.
- Abstract
The signatures of dark matter at the LHC commonly involve, in simplified scenarios, the production of a single particle plus large missing energy, from the undetected dark matter. However, in Z′-portal scenarios anomaly cancellation requires the presence of extra dark leptons in the dark sector. We investigate the signatures of the minimal scenarios of this kind, which involve cascade decays of the extra Z′ boson into the dark leptons, identifying a four-lepton signal as the most promising one. We estimate the sensitivity to this signal at the LHC, the high-luminosity LHC upgrade, a possible high-energy upgrade, as well as a future circular collider. For Z′ couplings compatible with current dijet constraints the multilepton signals can reach the 5σ level already at Run 2 of the LHC. At future colliders, couplings two orders of magnitude smaller than the electroweak coupling can be probed with 5σ sensitivity.
- Subjects
DARK matter; Z bosons; MAGNITUDE (Mathematics); GAUGE symmetries; STELLAR luminosity function
- Publication
Journal of High Energy Physics, 2020, Vol 2020, Issue 4, p1
- ISSN
1126-6708
- Publication type
Article
- DOI
10.1007/JHEP04(2020)069