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Inclusive-photon production and its dependence on photon isolation in pp collisions at root s=13 TeV using 139 fb-1 of ATLAS data

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F23%3A00372913" target="_blank" >RIV/68407700:21220/23:00372913 - isvavai.cz</a>

  • Alternative codes found

    RIV/68407700:21340/23:00372913 RIV/68407700:21670/23:00372913

  • Result on the web

    <a href="https://doi.org/10.1007/JHEP07(2023)086" target="_blank" >https://doi.org/10.1007/JHEP07(2023)086</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1007/JHEP07(2023)086" target="_blank" >10.1007/JHEP07(2023)086</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Inclusive-photon production and its dependence on photon isolation in pp collisions at root s=13 TeV using 139 fb-1 of ATLAS data

  • Original language description

    Measurements of differential cross sections are presented for inclusive isolated photon production in pp collisions at a centre-of-mass energy of 13TeV provided by the LHC and using 139 fb(-1) of data recorded by the ATLAS experiment. 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. 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 results presented in this paper constitute an improvement with respect to those published by ATLAS earlier: the measurements are provided for different isolation radii and with a more granular segmentation in photon pseudorapidity that can be exploited in improving the determination of the proton parton distribution functions. 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.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    10303 - Particles and field physics

Result continuities

  • Project

    <a href="/en/project/EF16_019%2F0000778" target="_blank" >EF16_019/0000778: Center for advanced applied science</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2023

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Journal of High Energy Physics

  • ISSN

    1029-8479

  • e-ISSN

    1029-8479

  • Volume of the periodical

    2023

  • Issue of the periodical within the volume

    7

  • Country of publishing house

    IT - ITALY

  • Number of pages

    71

  • Pages from-to

  • UT code for WoS article

    001062449200001

  • EID of the result in the Scopus database

    2-s2.0-85165305389