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      <dc:title>Measurement of the ttγ production cross section in proton-proton collisions at √s = 8 TeV with the ATLAS detector</dc:title>
      <dc:creator>Aaboud, M.</dc:creator>
      <dc:creator>Aguilar Saavedra, Juan Antonio</dc:creator>
      <dc:creator>Atlas Collaboration, /</dc:creator>
      <dc:subject>Hadron-Hadron scattering (experiments)</dc:subject>
      <dc:subject>Top physics</dc:subject>
      <dc:description>The cross section of a top-quark pair produced in association with a photon is measured in proton-proton collisions at a centre-of-mass energy of √s = 8 TeV with 20.2 fb-1 of data collected by the ATLAS detector at the Large Hadron Collider in 2012. The measurement is performed by selecting events that contain a photon with transverse momentum pT > 15 GeV, an isolated lepton with large transverse momentum, large missing transverse momentum, and at least four jets, where at least one is identified as originating from a b-quark. The production cross section is measured in a fiducial region close to the selection requirements. It is found to be 139 ± 7 (stat.) ± 17 (syst.) fb, in good agreement with the theoretical prediction at next-to-leading order of 151 ± 24 fb. In addition, differential cross sections in the fiducial region are measured as a function of the transverse momentum and pseudorapidity of the photon.</dc:description>
      <dc:date>2024-10-11T08:26:51Z</dc:date>
      <dc:date>2024-10-11T08:26:51Z</dc:date>
      <dc:date>2017-11-15</dc:date>
      <dc:type>journal article</dc:type>
      <dc:identifier>The ATLAS collaboration., Aaboud, M., Aad, G. et al. Measurement of the ttγ production cross section in proton-proton collisions at √s = 8 TeV with the ATLAS detector. J. High Energ. Phys. 2017, 86 (2017). https://doi.org/10.1007/JHEP11(2017)086</dc:identifier>
      <dc:identifier>https://hdl.handle.net/10481/95822</dc:identifier>
      <dc:identifier>10.1007/JHEP11(2017)086</dc:identifier>
      <dc:language>eng</dc:language>
      <dc:rights>http://creativecommons.org/licenses/by/4.0/</dc:rights>
      <dc:rights>open access</dc:rights>
      <dc:rights>Atribución 4.0 Internacional</dc:rights>
      <dc:publisher>Springer Nature</dc:publisher>
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