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Long-Lived Particle Displaced Vertex Search

Interactive 3D collider-detector simulator: long-lived beyond-Standard-Model particles are born at the beam collision point, fly out with an exponential proper lifetime and a Lorentz boost, and decay at a displaced vertex somewhere inside — or outside — the tracker volume. Tune the lifetime, boost and detector geometry and watch the reconstruction efficiency update live.

Physics & Mechanics3DAdvanced60 FPS📱 Mobile-adapted⇄ 2D version

Most new particles proposed by the Standard Model's extensions are expected to decay essentially instantly — but a class of "long-lived particles" (LLPs) predicted by hidden-sector, SUSY and dark-photon models can survive long enough to travel millimetres or metres through a real detector before decaying. This simulator recreates the core statistical signature collider physicists search for: particles born at a central collision point, launched with a Lorentz boost, decaying after an exponentially-distributed proper lifetime. Tune the proper lifetime cτ, the boost γβ and the tracker's inner veto radius, fire particles continuously or in bursts, and watch the live Monte Carlo efficiency track the analytic formula ε = exp(−r_veto/λ) − exp(−r_tracker/λ) in real time.

⚙ Under the hood

Interactive 3D collider-detector simulator: beyond-Standard-Model long-lived particles are born at the collision point, fly out with a Lorentz boost and an exponential proper lifetime, and decay at a displaced vertex — watch the reconstruction efficiency track the analytic formula live.

particle physicscolliderbeyond standard modeldisplaced vertexMonte Carlodetector

3D · Three.js / WebGL renderer · 60 FPS target · runs fully client-side, no install