  We explore the sensitivity of displaced vertex searches at LHCb for testing
sterile neutrino extensions of the Standard Model towards explaining the
observed neutrino masses. We derive estimates for the constraints on sterile
neutrino parameters from a recently published displaced vertex search at LHCb
based on run 1 data. They yield the currently most stringent limit on
active-sterile neutrino mixing in the sterile neutrino mass range between 4.5
GeV and 10 GeV. Furthermore, we present forecasts for the sensitivities that
could be obtained from the run 2 data and also for the high-luminosity phase of
the LHC.
