  A method to derive constraints on new physics models featuring exotic
long-lived particles using detector-corrected measurements of prompt states is
presented. The CONTUR workflow is modified to account for the fraction of
long-lived particles which decay early enough to be reconstructed as prompt,
making it possible to determine how many of signal events would be selected in
the Rivet routines which encapsulate the fiducial regions of dozens of
measurements of Standard Model processes by the ATLAS and CMS collaborations.
New constraints are set on several popular exotic long-lived particle models in
the early-decay regime, which is often poorly covered by direct searches. The
probed models include feebly-interacting dark matter, hidden sector models
mediated by a heavy neutral scalar, dark photon models and a model featuring
photo-phobic axion-like particles.
