2016/06/30 by John Paul Chou, David Curtin, H. J. Lubatti · 4 citations
Physics and Astronomy · #Astronomy #Astrophysics #Big Bang nucleosynthesis #Cosmic ray #Dark Matter and Cosmic Phenomena #Detector #Galaxy #Gauge (firearms) #Graviton #Higgs boson #Hodoscope #Large Hadron Collider #Luminosity #Nuclear physics #Nuclear reaction #Nucleosynthesis #Particle Detector Development and Performance #Particle physics #Particle physics theoretical and experimental studies #Physics #Physics beyond the Standard Model #Standard Model (mathematical formulation) #Supersymmetry #Upgrade #hep-ex #hep-ph
paper · pdf · doi:10.1016/j.physletb.2017.01.043
7 pages, 4 figures. Added more detail to discussion of backgrounds. Various minor clarifications. Results and conclusions unchanged
arxiv created 2017/01/13 · openalex publication_date 2017/01/25 · arxiv updated 2017/02/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
Long-lived particles (LLPs) are a common feature in many beyond the Standard Model theories, including supersymmetry, and are generically produced in exotic Higgs decays. Unfortunately, no existing or proposed search strategy will be able to observe the decay of non-hadronic electrically neutral LLPs with masses above ∼ GeV and lifetimes near the limit set by Big Bang Nucleosynthesis (BBN), cτ≲107–108m. We propose the MATHUSLA surface detector concept (MAssive Timing Hodoscope for Ultra Stable neutraL pArticles), which can be implemented with existing technology and in time for the high luminosity LHC upgrade to find such ultra-long-lived particles (ULLPs), whether produced in exotic Higgs decays or more general production modes. We also advocate a dedicated LLP detector at a future 100 TeV collider, where a modestly sized underground design can discover ULLPs with lifetimes at the BBN limit produced in sub-percent level exotic Higgs decays.