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Precise measurements of W- and Z-boson transverse momentum spectra with the ATLAS detector using pp collisions at s=5.02 TeV and 13 TeV

Aad, G. ; Åkesson, T.P.A. LU orcid ; Doglioni, C. LU ; Ekman, P.A. LU orcid ; Hedberg, V. LU ; Herde, H. LU orcid ; Konya, B. LU ; Lytken, E. LU orcid ; Poettgen, R. LU orcid and Simpson, N.D. LU , et al. (2024) In European Physical Journal C 84(10).
Abstract
This paper describes measurements of the transverse momentum spectra of W and Z bosons produced in proton–proton collisions at centre-of-mass energies of s=5.02 TeV and s=13 TeV with the ATLAS experiment at the Large Hadron Collider. Measurements are performed in the electron and muon channels, W→ℓν and Z→ℓℓ (ℓ=e or μ), and for W events further separated by charge. The data were collected in 2017 and 2018, in dedicated runs with reduced instantaneous luminosity, and correspond to 255 and 338 pb-1 at s=5.02 TeV and 13 TeV, respectively. These conditions optimise the reconstruction of the W-boson transverse momentum. The distributions observed in the electron and muon channels are unfolded, combined, and compared to QCD calculations based on... (More)
This paper describes measurements of the transverse momentum spectra of W and Z bosons produced in proton–proton collisions at centre-of-mass energies of s=5.02 TeV and s=13 TeV with the ATLAS experiment at the Large Hadron Collider. Measurements are performed in the electron and muon channels, W→ℓν and Z→ℓℓ (ℓ=e or μ), and for W events further separated by charge. The data were collected in 2017 and 2018, in dedicated runs with reduced instantaneous luminosity, and correspond to 255 and 338 pb-1 at s=5.02 TeV and 13 TeV, respectively. These conditions optimise the reconstruction of the W-boson transverse momentum. The distributions observed in the electron and muon channels are unfolded, combined, and compared to QCD calculations based on parton shower Monte Carlo event generators and analytical resummation. The description of the transverse momentum distributions by Monte Carlo event generators is imperfect and shows significant differences largely common to W-, W+ and Z production. The agreement is better at s=5.02 TeV, especially for predictions that were tuned to Z production data at s=7 TeV. Higher-order, resummed predictions based on DYTurbo generally match the data best across the spectra. Distribution ratios are also presented and test the understanding of differences between the production processes. © The Author(s) 2024. (Less)
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Contribution to journal
publication status
published
subject
keywords
Colliding beam accelerators, Hadrons, Linear accelerators, Negative ions, Photons, Positive ions, ATLAS detectors, Center-of-mass energies, Measurements of, Monte Carlo Event generators, Precise measurements, Proton proton collisions, Transverse momenta, Transverse-momentum spectrum, W bosons, Z Bosons, Bosons
in
European Physical Journal C
volume
84
issue
10
article number
1126
publisher
Springer Nature
external identifiers
  • scopus:85208706028
ISSN
1434-6044
DOI
10.1140/epjc/s10052-024-13414-0
language
English
LU publication?
yes
id
dd6c7b9c-1891-40c9-8579-47478e21c20a
date added to LUP
2025-10-15 07:57:36
date last changed
2025-10-16 13:34:50
@article{dd6c7b9c-1891-40c9-8579-47478e21c20a,
  abstract     = {{This paper describes measurements of the transverse momentum spectra of W and Z bosons produced in proton–proton collisions at centre-of-mass energies of s=5.02 TeV and s=13 TeV with the ATLAS experiment at the Large Hadron Collider. Measurements are performed in the electron and muon channels, W→ℓν and Z→ℓℓ (ℓ=e or μ), and for W events further separated by charge. The data were collected in 2017 and 2018, in dedicated runs with reduced instantaneous luminosity, and correspond to 255 and 338 pb-1 at s=5.02 TeV and 13 TeV, respectively. These conditions optimise the reconstruction of the W-boson transverse momentum. The distributions observed in the electron and muon channels are unfolded, combined, and compared to QCD calculations based on parton shower Monte Carlo event generators and analytical resummation. The description of the transverse momentum distributions by Monte Carlo event generators is imperfect and shows significant differences largely common to W-, W+ and Z production. The agreement is better at s=5.02 TeV, especially for predictions that were tuned to Z production data at s=7 TeV. Higher-order, resummed predictions based on DYTurbo generally match the data best across the spectra. Distribution ratios are also presented and test the understanding of differences between the production processes. © The Author(s) 2024.}},
  author       = {{Aad, G. and Åkesson, T.P.A. and Doglioni, C. and Ekman, P.A. and Hedberg, V. and Herde, H. and Konya, B. and Lytken, E. and Poettgen, R. and Simpson, N.D. and Smirnova, O. and Zwalinski, L.}},
  issn         = {{1434-6044}},
  keywords     = {{Colliding beam accelerators; Hadrons; Linear accelerators; Negative ions; Photons; Positive ions; ATLAS detectors; Center-of-mass energies; Measurements of; Monte Carlo Event generators; Precise measurements; Proton proton collisions; Transverse momenta; Transverse-momentum spectrum; W bosons; Z Bosons; Bosons}},
  language     = {{eng}},
  number       = {{10}},
  publisher    = {{Springer Nature}},
  series       = {{European Physical Journal C}},
  title        = {{Precise measurements of W- and Z-boson transverse momentum spectra with the ATLAS detector using pp collisions at s=5.02 TeV and 13 TeV}},
  url          = {{http://dx.doi.org/10.1140/epjc/s10052-024-13414-0}},
  doi          = {{10.1140/epjc/s10052-024-13414-0}},
  volume       = {{84}},
  year         = {{2024}},
}