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Scientific article
Open access
English

Measurements of Z\gamma+jets differential cross sections in pp collisions at \sqrt{s}=13 TeV with the ATLAS detector

ContributorsATLAS Collaboration
Published inThe journal of high energy physics, vol. 2023, no. 7, 72
Publication date2023
First online date2023-07-10
Abstract

Differential cross-section measurements of Zγ production in association with hadronic jets are presented, using the full 139 fb$^{−1}$ dataset of $ \sqrt{s} $ = 13 TeV proton–proton collisions collected by the ATLAS detector during Run 2 of the LHC. Distributions are measured using events in which the Z boson decays leptonically and the photon is usually radiated from an initial-state quark. Measurements are made in both one and two observables, including those sensitive to the hard scattering in the event and others which probe additional soft and collinear radiation. Different Standard Model predictions, from both parton-shower Monte Carlo simulation and fixed-order QCD calculations, are compared with the measurements. In general, good agreement is observed between data and predictions from MATRIX and MiNNLO$_{PS}$, as well as next-to-leading-order predictions from MadGraph5_aMC@NLO and Sherpa.

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Keywords
  • Hadron-Hadron Scattering
  • P p: scattering
  • P p: colliding beams
  • Z0: associated production
  • Photon: associated production
  • Jet: associated production
  • Higher-order: 1
  • Perturbation theory: higher-order
  • Jet: hadronic
  • Z0: leptonic decay
  • Numerical calculations: Monte Carlo
  • ATLAS
  • Differential cross section: measured
  • Collinear
  • Quantum chromodynamics: perturbation theory
  • Initial state
  • Radiation: initial-state interaction
  • Hard scattering
  • CERN LHC Coll
  • Experimental results
  • 13000 GeV-cms
Citation (ISO format)
ATLAS Collaboration. Measurements of <i>Z\gamma+</i>jets differential cross sections in <i>pp</i> collisions at <i>\sqrt{s}=13 </i>TeV with the ATLAS detector. In: The journal of high energy physics, 2023, vol. 2023, n° 7, p. 72. doi: 10.1007/jhep07(2023)072
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ISSN of the journal1029-8479
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