We welcome you to the fourth workshop of the LHC Long-Lived Particle (LLP) Community, taking place from 23 to 25 October 2018 in Amsterdam!

The LHC LLP Community, composed of experimentalists from ATLAS, CMS, LHCb, as well as theorists, phenomenologists and those interested in LLP searches with dedicated LHC detectors such as milliQan, MoEDAL, MATHUSLA, FASER, CODEX-b, etc. -- and continuing the tradition established by the previous workshops -- will meet again to discuss the hottest-and-latest in LLP searches and examine the future challenges of the field. 

In particular, we expect there to be some focus on the planned HL-LHC upgrades; the status of dark showers resulting from dark, QCD-like sectors and the challenges of simulation thereof; the phenomenology of heavy neutral leptons (HNLs); and the prospects of both imminent dedicated LLP detectors at the LHC as well as exciting future projects such as the FCC, CEPC, and CLIC.

The LLP community is a discussion space open to all scientists. As such we fully adhere to the CERN Code of Conduct. Community is collaboration, and collaboration is respect.