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Portrait of RP

Ruth Pöttgen

Senior Lecturer

Portrait of RP

Simultaneous Unbinned Differential Cross-Section Measurement of Twenty-Four (Formula presented) Kinematic Observables with the ATLAS Detector

Author

  • G. Aad
  • T.P.A. Åkesson
  • K.S.V. Astrand
  • C. Doglioni
  • P.A. Ekman
  • V. Hedberg
  • H. Herde
  • B. Konya
  • E. Lytken
  • R. Poettgen
  • N.D. Simpson
  • O. Smirnova
  • E.J. Wallin
  • L. Zwalinski
Show all

Summary, in English

(Formula presented) boson events at the Large Hadron Collider can be selected with high purity and are sensitive to a diverse range of QCD phenomena. As a result, these events are often used to probe the nature of the strong force, improve Monte Carlo event generators, and search for deviations from standard model predictions. All previous measurements of (Formula presented) boson production characterize the event properties using a small number of observables and present the results as differential cross sections in predetermined bins. In this analysis, a machine learning method called omnifold is used to produce a simultaneous measurement of twenty-four (Formula presented) observables using (Formula presented) of proton-proton collisions at (Formula presented) collected with the ATLAS detector. Unlike any previous fiducial differential cross-section measurement, this result is presented unbinned as a dataset of particle-level events, allowing for flexible reuse in a variety of contexts and for new observables to be constructed from the twenty-four measured observables. © 2024 CERN, for the ATLAS Collaboration.

Department/s

  • Particle and nuclear physics
  • eSSENCE: The e-Science Collaboration
  • Department of Physics

Publishing year

2024

Language

English

Publication/Series

Physical Review Letters

Volume

133

Issue

26

Document type

Journal article

Publisher

American Physical Society

Topic

  • Subatomic Physics

Keywords

  • Binoculars
  • Colliding beam accelerators
  • Hadrons
  • Kinematics
  • Linear accelerators
  • Photons
  • ATLAS detectors
  • Cross-section measurement
  • Differential cross-sections
  • Diverse range
  • High purity
  • Large Hadron Collider
  • Large-hadron colliders
  • Measurements of
  • Monte Carlo Event generators
  • Standard model
  • Bosons

Status

Published

ISBN/ISSN/Other

  • ISSN: 0031-9007