Event Generation Data
These samples are coming soon; this page will be updated as more samples are released.
The ATLAS Collaboration has released a significant amount of event generation data in HEPMC format (git repository). Events are provided in 10,000 event text files, tarred and gzipped to save space, for both 13 TeV (Run 2-like) and 13.6 TeV (Run 3-like) configurations. These files can be passed into common phenomenological tools like Delphes and Rivet. Please don't forget to cite these samples if you use them!
Search for Data
The data are gathered into records on the CERN Open Data Portal. They are grouped into logically consistent sets according to keyword rules, in order to make the identification of sample sets (e.g. phase-space slices of a single physics sample, or beyond the Standard Model (BSM) signal samples intended for use with a single analysis) straightforward.
Sample Availability
In order to minimize the storage required for these samples, we have released up to 10M events per individual sample, up to double the luminosity of the collected dataset at the corresponding center of mass energy, or all the events that we have generated, which ever is least. In some cases, more events are available. If you require more events for a specific study, please get in touch. Similarly, we have chosen to release our nominal samples, along with standard systematic variation and alternative samples, and standard alternative samples that are commonly used in ATLAS analyses. We have also released a selection of BSM signal samples. You are welcome to inquire about the availability of additional samples.
Generating Your Own Samples
The creation of all samples follows the instructions in the standard ATLAS tutorial. You are welcome to follow this tutorial yourself if you wish, and to generate your own samples using ATLAS software, following our configurations. Many of the samples provided here require significant CPU resources to produce, which is why they have been provided to the community.