Slow and steady

Strassler, Matthew J.; Thaler, Jesse

doi:10.1038/s41567-019-0628-z

Cited by 2 publications

(2 citation statements)

References 3 publications

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“…Following the recommendation of CMS, we omit all of the zeroed LBs from our analysis. While these missing and zeroed LBs do not affect the conclusions of our physics studies, they do highlight the importance of stress-testing archival data strategies to make sure that there is validated information available to future generations of collider enthusiasts [180]. For completeness, in Fig.…”

Section: Appendix A: Missing and Zeroed Luminosity Blocksmentioning

confidence: 85%

Exploring the space of jets with CMS open data

et al. 2020

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We explore the metric space of jets using public collider data from the CMS experiment. Starting from 2.3 fb −1 of proton-proton collisions at √ s = 7 TeV collected at the Large Hadron Collider in 2011, we isolate a sample of 1,690,984 central jets with transverse momentum above 375 GeV. To validate the performance of the CMS detector in reconstructing the energy flow of jets, we compare the CMS Open Data to corresponding simulated data samples for a variety of jet kinematic and substructure observables. Even without detector unfolding, we find very good agreement for trackbased observables after using charged hadron subtraction to mitigate the impact of pileup. We perform a range of novel analyses, using the "energy mover's distance" (EMD) to measure the pairwise difference between jet energy flows. The EMD allows us to quantify the impact of detector effects, visualize the metric space of jets, extract correlation dimensions, and identify the most and least typical jet configurations. To facilitate future jet studies with CMS Open Data, we make our datasets and analysis code available, amounting to around two gigabytes of distilled data and one hundred gigabytes of simulation files. CONTENTS

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Section: Appendix A: Missing and Zeroed Luminosity Blocksmentioning

confidence: 85%

Exploring the space of jets with CMS open data

et al. 2020

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“…This research includes searches for new particles [20,21], jet and QCD studies [22,23], and machine learning studies [24,25,26]. Furtherfore, and very usefully, some of the research users have provided valuable and detailed feedback and perspectives [27,28] on the challenges one faces when embarking on research with CMS open data.…”

Section: Pos(lhcp2019)260mentioning

confidence: 99%

Open Data at CMS: Status and Plans

McCauley¹

2019

Proceedings of 7th Annual Conference on Large Hadron Collider Physics — PoS(LHCP2019)

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The CMS Experiment at the LHC has released many large datasets of proton-proton collision data as well as simulation to the public as part of its commitment to data preservation and open access. The collision data released totals around 2 fb −1 at 7 TeV and nearly 12 fb −1 at 8 TeV. Data preservation describes the efforts to not only preserve the data itself but the conditions in which it can be analyzed. This requires archiving and documenting information such as run environment and conditions and tools such as analysis software and workflows. Open access describes the efforts to share these tools and information with the public, including educators and researchers. These efforts present many challenges, partly due to the complexity and size of the CMS datasets and also to the knowledge required to make meaningful use of them. We describe here how we dealt with these challenges and the usage of CMS open data not only in public education and engagement but also in fundamental research. Furthermore we describe plans for future releases of data.

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Slow and steady

Cited by 2 publications

References 3 publications

Exploring the space of jets with CMS open data

Exploring the space of jets with CMS open data

Open Data at CMS: Status and Plans

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