A dataset of 1000 event display files accessible via HYPATIA as part of the Masterclasses Z-Path. The events were recorded in 2012 by the ATLAS detector.
The dataset can be analysed by using HYPATIA, which can be found on the linked site in the section "Get to work! -> Data samples and tools". There you will also find a tally sheet and links to instructions on how to analyse the data found in the dataset. The section "Identifying Pariticles" will show how to find out which detector signature hints at which particle. "Identifying Events" details how to categorise events. Using the knowledge of these two sections, one can use the prescriptions in "Get to work! -> Do it!" to rediscover the Z boson and to hunt for new particles.
The open data are released under the Creative Commons CC0 waiver. Neither ATLAS 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.