The inclusive isolated-photon production cross section at 13 TeV has been measured up to 2.5 TeV and matches NLO and NNLO QCD predictions within uncertainties.
Precision direct photon spectra at high energy and comparison to the 8 TeV ATLAS data
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abstract
The direct photon spectrum is computed to the highest currently available precision and compared to ATLAS data from 8 TeV collisions at the LHC. The prediction includes threshold resummation at next-to-next-to-next-to-leading logarithmic order through the program PeTeR, matched to next-to-leading fixed order with fragmentation effects using JetPhox and includes the resummation of leading-logarithmic electroweak Sudakov effects. Remarkably, improved agreement with data can be seen when each component of the calculation is added successively. This comparison demonstrates the importance of both threshold logs and electroweak Sudakov effects. Numerical values for the predictions are included.
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2019 1verdicts
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Measurement of the inclusive isolated-photon cross section in $pp$ collisions at $\sqrt{s}=13$ TeV using 36 fb$^{-1}$ of ATLAS data
The inclusive isolated-photon production cross section at 13 TeV has been measured up to 2.5 TeV and matches NLO and NNLO QCD predictions within uncertainties.