Optimal search reach for heavy neutral leptons at a muon collider

Abstract

Neutrinos are the most elusive particles known. Heavier sterile neutrinos mixing with the standard neutrinos might solve the mystery of the baryon asymmetry of the universe. In this letter, we show that among all future energy frontier accelerators, muon colliders will provide the farthest search reach for such neutrinos for mass ranges above the $Z$ pole into the multi-TeV regime. We compare the performance of muon with electron colliders of the same machine energy and briefly discuss the complementarity in flavor space between the two types of accelerators.

arXiv comment6 pages, 3 figures

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Cited by in corpus (10)

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• Measuring lepton number violation in heavy neutral lepton decays at the future muon collider
• Testing tree level TeV scale seesaw scenarios in $\mu$TRISTAN
• ALPs and HNLs at LHC and Muon Colliders: Uncovering New Couplings and Signals
• Long-lived Sterile Neutrino Searches at Future Muon Colliders
• A possible search for Majorana neutrinos at future lepton colliders
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• New developments in the Whizard event generator
• Investigating the leptonic couplings of doubly charged scalars at the muon collider