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Sten is a caucasian male with cropped red hair and beard.

Sten Åstrand

Doctoral student

Sten is a caucasian male with cropped red hair and beard.

Cross-section measurements for the production of a W-boson in association with high-transverse-momentum jets in pp collisions at s = 13 TeV 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
  • E.J. Wallin
  • L. Zwalinski
Show all

Summary, in English

A set of measurements for the production of a W-boson in association with high-transverse-momentum jets is presented using 140 fb-1 of proton–proton collision data at a centre-of-mass energy of s=13 TeV collected by the ATLAS detector at the LHC. The measurements are performed in final states in which the W-boson decays into an electron or muon plus a neutrino and is produced in association with jets with pTEMPTY>30 GeV, where the leading jet has pTEMPTY>500 GeV. The angular separation between the lepton and the closest jet with pTEMPTY>100 GeV is measured and used to define a collinear phase space, wherein measurements of kinematic properties of the W-boson and the associated jet are performed. The collinear phase space is populated by dijet events radiating a W-boson and events with a W-boson produced in association with several jets and it serves as an excellent data sample to probe higher-order theoretical predictions. Measured differential distributions are compared with predictions from state-of-the-art next-to-leading order multi-leg merged Monte Carlo event generators and a fixed-order calculation of the W+1-jet process computed at next-to-next-to-leading order in the strong coupling constant. © CERN for the benefit of the ATLAS Collaboration 2025.

Department/s

  • Particle and nuclear physics
  • eSSENCE: The e-Science Collaboration
  • Undergraduate Programme of Studies in Physics within Faculty of Science
  • 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
  • Error detection
  • Fighter aircraft
  • Germanium compounds
  • Kinematics
  • Phase space methods
  • Quantum theory
  • Tellurium compounds
  • Tungsten compounds
  • A-center
  • ATLAS detectors
  • Center-of-mass energies
  • Centre-of-mass energies
  • Cross-section measurement
  • Final state
  • Phase spaces
  • Proton proton collisions
  • Transverse momentum jets
  • W bosons
  • Bosons

Status

Published

ISBN/ISSN/Other

  • ISSN: 1434-6044