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Torsten ÅKESSON

Torsten Åkesson

Professor Emeritus / Expert

Torsten ÅKESSON

Measurement of W±-boson differential cross-sections in proton–proton collisions with low pile-up data at s=5.02 TeV and 13TeV 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
  • O. Smirnova
  • N. Sur
  • E.J. Wallin
  • L. Zwalinski
Show all

Summary, in English

High precision single-differential W±-boson production cross-sections as a function of electron or muon transverse momentum pT or their pseudorapity η, as well as double-differential cross-sections as functions of these variables, are measured in proton–proton collisions at centre-of-mass energies s=5.02 TeV and 13 TeV. The W-boson charge asymmetry as a function of lepton η is also measured. The data, collected in dedicated runs at reduced instantaneous luminosity with the ATLAS detector at the Large Hadron Collider, correspond to integrated luminosities of 255 pb-1 at 5.02 TeV and 338 pb-1 at 13 TeV. The measurements are in agreement with Standard-Model predictions calculated at next-to-next-to-leading-order in the strong coupling constant αs including transverse-momentum resummation at next-to-next-to-leading logarithmic accuracy using several parton distribution functions. The impact of the measured differential cross-sections as a function of lepton η on the determination of these functions is studied using a profiling technique. © CERN for the benefit of the ATLAS Collaboration 2025.

Department/s

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

Publishing year

2025

Language

English

Publication/Series

European Physical Journal C

Volume

85

Issue

7

Document type

Journal article

Publisher

Springer Nature

Topic

  • Subatomic Physics

Keywords

  • Astrophysics
  • Bosons
  • Colliding beam accelerators
  • Distribution functions
  • Lead alloys
  • Luminance
  • Microstrip devices
  • Tellurium compounds
  • ATLAS detectors
  • Differential cross-sections
  • High-precision
  • Measurements of
  • Pile-ups
  • Production cross section
  • Proton proton collisions
  • Single-differential
  • Transverse momenta
  • W bosons
  • Piles

Status

Published

ISBN/ISSN/Other

  • ISSN: 1434-6044