002835957 001__ 2835957
002835957 005__ 20230821151800.0
002835957 0248_ $$aoai:cds.cern.ch:2835957$$pcerncds:FULLTEXT$$pcerncds:atlas-conf
002835957 037__ $$aATLAS-CONF-2022-065
002835957 035__ $$9Inspire$$a2162989
002835957 041__ $$aeng
002835957 088__ $$9ATLAS-COM-CONF-2022-075
002835957 110__ $$aThe ATLAS collaboration
002835957 245__ $$aInclusive-photon production and its dependence on photon isolation in $pp$ collisions at $\sqrt s=13$ TeV} using 139 fb$^{-1}$ of ATLAS data
002835957 260__ $$c2022
002835957 269__ $$aGeneva$$bCERN$$c06 Oct 2022
002835957 300__ $$a43 p
002835957 500__ $$aAll figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/CONFNOTES/ATLAS-CONF-2022-065
002835957 520__ $$aMeasurements of differential cross sections for inclusive isolated-photon production in $pp$ collisions at a centre-of-mass energy of 13 TeV provided by the LHC and using an integrated luminosity of 139 fb$^{-1}$ of ATLAS data are presented. The cross sections are measured as functions of the photon transverse energy in different regions of photon pseudorapidity. The photons are required to be isolated by means of a fixed-cone method with two different cone radii, 0.2 and 0.4. The dependence of the inclusive-photon production on the photon isolation is investigated by measuring the fiducial cross sections as functions of the isolation-cone radius and the ratios of the differential cross sections with different radii in different regions of photon pseudorapidity. The measurements presented here, with a more granular segmentation in photon pseudorapidity leading to a more detailed experimental input to fits of the proton parton distribution functions and with different isolation radii, constitute an improvement with respect to those published by ATLAS earlier. These improvements provide a more in-depth test of the theoretical predictions. Next-to-leading-order QCD predictions from JETPHOX and SHERPA and next-to-next-to-leading-order QCD predictions from NNLOJET are compared to the measurements, using several parameterisations of the proton parton distribution functions. The measured cross sections are well described by the fixed-order QCD predictions within the experimental and theoretical uncertainties in most of the investigated phase-space region.
002835957 594__ $$aCONF
002835957 595__ $$aCERN CDS-Invenio WebSubmit
002835957 6531_ $$9CERN$$aphotons, QCD, isolation
002835957 65017 $$2SzGeCERN$$aParticle Physics - Experiment
002835957 65027 $$2SzGeCERN$$aConference talks on ATLAS
002835957 690C_ $$aCERN
002835957 690C_ $$aINTNOTE
002835957 690C_ $$aPRIVATLAS
002835957 690C_ $$aINTNOTEATLASPUBL
002835957 693__ $$aCERN LHC$$eATLAS
002835957 710__ $$5PH-EP
002835957 710__ $$gATLAS Collaboration
002835957 78502 $$isuperseded by$$rCERN-EP-2022-247$$w2848074
002835957 859__ [email protected]
002835957 859__ [email protected]
002835957 859__ [email protected]
002835957 8564_ $$uhttps://cds.cern.ch/record/2834592$$yOriginal Communication (restricted to ATLAS)
002835957 8564_ $$82399304$$s1851485$$uhttps://cds.cern.ch/record/2835957/files/ATLAS-CONF-2022-065.pdf$$zStamped by WebSubmit: 06/10/2022
002835957 916__ $$sn$$w202270
002835957 960__ $$a91
002835957 963__ $$aPUBLIC
002835957 962__ $$b2809139$$kATLAS-CONF-2022-065$$ncorigliano calabro20220924
002835957 970__ $$a000777125CER
002835957 980__ $$aINTNOTEATLASPUBL
002835957 980__ $$aNote