Journal
PHYSICAL REVIEW LETTERS
Volume 123, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.123.041801
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Funding
- Office of Nuclear Physics of the U.S. Department of Energy (DOE) [DE-SC0011090]
- DOE Office of High Energy Physics [DE-SC0012567, DE-SC0019128]
- Simons Foundation through a Simons Fellowship in Theoretical Physics
- Microsoft Azure
- U.S. Department of Energy (DOE) [DE-SC0019128] Funding Source: U.S. Department of Energy (DOE)
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When arc two collider events similar? Despite the simplicity and generality of this question, there is no established notion of the distance between two events. To address this question, we develop a metric for the space of collider events based on the earth mover's distance: the work required to rearrange the radiation pattern of one event into another. We expose interesting connections between this metric and the structure of infrared- and collinear-safe observables, providing a novel technique to quantify event modifications due to hadronization, pileup, and detector effects. We showcase how this metrization unlocks powerful new tools for analyzing and visualizing collider data without relying upon a choice of observables. More broadly, this framework paves the way for data-driven collider phenomenology without specialized observables or machine learning models.
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