LHCb is part of the International Masterclass Programme: each year, high-school students reach their nearby universities and become LHCb physicists for a day. Their goal is to select in real LHCb events a particular decay of the D0 meson, where a Kaon and a Pion are produced. On such events, the D0 lifetime is measured, using the same analysis tools and techniques LHCb researchers use every day.
The open data are released under the Creative Commons CC0 waiver. Neither LHCb nor CERN endorse any works, scientific or otherwise, produced using these data. All releases will have a unique DOI that you are requested to cite in any applications or publications.