4.7 Article Data Paper

LHC physics dataset for unsupervised New Physics detection at 40 MHz

期刊

SCIENTIFIC DATA
卷 9, 期 1, 页码 -

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NATURE PORTFOLIO
DOI: 10.1038/s41597-022-01187-8

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资金

  1. European Research Council (ERC) under the European Union [772369]
  2. ERC-POC programme [996696]
  3. European Research Council (ERC) [772369] Funding Source: European Research Council (ERC)

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In the particle detectors at the Large Hadron Collider, millions of proton-proton collisions occur every second, generating a massive amount of data. To reduce this data volume, real-time decisions are made by ATLAS and CMS experiments on whether to keep or discard each collision event for further analysis. To develop new event selection strategies and assess their sensitivity to new phenomena, we introduce a dataset that replicates a typical data stream collected by such a real-time processing system.
In the particle detectors at the Large Hadron Collider, hundreds of millions of proton-proton collisions are produced every second. If one could store the whole data stream produced in these collisions, tens of terabytes of data would be written to disk every second. The general-purpose experiments ATLAS and CMS reduce this overwhelming data volume to a sustainable level, by deciding in real-time whether each collision event should be kept for further analysis or be discarded. We introduce a dataset of proton collision events that emulates a typical data stream collected by such a real-time processing system, pre-filtered by requiring the presence of at least one electron or muon. This dataset could be used to develop novel event selection strategies and assess their sensitivity to new phenomena. In particular, we intend to stimulate a community-based effort towards the design of novel algorithms for performing unsupervised new physics detection, customized to fit the bandwidth, latency and computational resource constraints of the real-time event selection system of a typical particle detector.

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