Heavy neutral fermions at the high-luminosity LHC

Juan Carlos Helo, Martin Hirsch, Zeren Simon Wang

Research output: Contribution to journalArticle

30 Citations (Scopus)


© 2018, The Author(s). Long-lived light particles (LLLPs) appear in many extensions of the standard model. LLLPs are usually motivated by the observed small neutrino masses, by dark matter or both. Typical examples for fermionic LLLPs (a.k.a. heavy neutral fermions, HNFs) are sterile neutrinos or the lightest neutralino in R-parity violating supersymmetry. The high luminosity LHC is expected to deliver up to 3/ab of data. Searches for LLLPs in dedicated experiments at the LHC could then probe the parameter space of LLLP models with unprecedented sensitivity. Here, we compare the prospects of several recent experimental proposals, FASER, CODEX-b and MATHUSLA, to search for HNFs and discuss their relative merits.s.
Original languageEnglish
JournalJournal of High Energy Physics
Publication statusPublished - 1 Jul 2018
Externally publishedYes

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