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@ARTICLE{Aaboud:425389,
      author       = {Aaboud, Morad and others},
      collaboration = {{ATLAS Collaboration}},
      title        = {{M}easurement of the ratio of cross sections for inclusive
                      isolated-photon production in $pp$ collisions at $\sqrt s =
                      13$ and $8$ {T}e{V} with the {ATLAS} detector},
      journal      = {Journal of high energy physics},
      volume       = {2019},
      number       = {4},
      issn         = {1029-8479},
      address      = {[Trieste]},
      publisher    = {SISSA},
      reportid     = {PUBDB-2019-03204, arXiv:1901.10075. CERN-EP-2018-340},
      pages        = {93},
      year         = {2019},
      note         = {(c) Copyright CERN, for the benefit of the ATLAS
                      Collaboration. Article funded by SCOAP},
      abstract     = {The ratio of the cross sections for inclusive
                      isolated-photon production in pp collisions at
                      centre-of-mass energies of 13 and 8 TeV is measured using
                      the ATLAS detector at the LHC. The integrated luminosities
                      of the 13 TeV and 8 TeV datasets are 3.2 fb$^{−1}$ and
                      20.2 fb$^{−1}$, respectively. The ratio is measured as a
                      function of the photon transverse energy in different
                      regions of the photon pseudorapidity. The predictions from
                      next-to-leading-order perturbative QCD calculations are
                      compared with the measured ratio. The experimental
                      systematic uncertainties as well as the uncertainties
                      affecting the predictions are evaluated taking into account
                      the correlations between the two centre-of-mass energies,
                      resulting in a reduction of up to a factor of 2.5 (5) in the
                      experimental (theoretical) systematic uncertainties. The
                      predictions based on several parameterisations of the proton
                      parton distribution functions agree with the data within the
                      reduced experimental and theoretical uncertainties. In
                      addition, this ratio to that of the fiducial cross sections
                      for Z boson production at 13 and 8 TeV using the decay
                      channels Z → e$^{+}$e$^{−}$ and Z → μ$^{+}$μ$^{−}$
                      is made and compared with the theoretical predictions. In
                      this double ratio, a further reduction of the experimental
                      uncertainty is obtained because the uncertainties arising
                      from the luminosity measurement cancel out. The predictions
                      describe the measurements of the double ratio within the
                      theoretical and experimental uncertainties.},
      keywords     = {p p: colliding beams (INSPIRE) / cross section: ratio
                      (INSPIRE) / energy dependence (INSPIRE) / rapidity
                      dependence (INSPIRE) / parton: distribution function
                      (INSPIRE) / p p: scattering (INSPIRE) / Z0: leptonic decay
                      (INSPIRE) / muon: pair production (INSPIRE) / electron: pair
                      production (INSPIRE) / photon: transverse energy (INSPIRE) /
                      luminosity: monitoring (INSPIRE) / photon: rapidity
                      (INSPIRE) / quantum chromodynamics: perturbation theory
                      (INSPIRE) / perturbation theory: higher-order (INSPIRE) /
                      higher-order: 1 (INSPIRE) / ATLAS (INSPIRE) / CERN LHC Coll
                      (INSPIRE) / correlation (INSPIRE) / experimental results
                      (INSPIRE) / 8000 GeV-cms13000 GeV-cms (INSPIRE)},
      cin          = {ATLAS},
      ddc          = {530},
      cid          = {I:(DE-H253)ATLAS-20120731},
      pnm          = {611 - Fundamental Particles and Forces (POF3-611)},
      pid          = {G:(DE-HGF)POF3-611},
      experiment   = {EXP:(DE-H253)LHC-Exp-ATLAS-20150101},
      typ          = {PUB:(DE-HGF)29 / PUB:(DE-HGF)16},
      eprint       = {1901.10075},
      howpublished = {arXiv:1901.10075},
      archivePrefix = {arXiv},
      SLACcitation = {$\%\%CITATION$ = $arXiv:1901.10075;\%\%$},
      UT           = {WOS:000465438700002},
      doi          = {10.1007/JHEP04(2019)093},
      url          = {https://bib-pubdb1.desy.de/record/425389},
}