Measurement of the inclusive isolated-photon production cross section in pp collisions at $$\mathbf {\sqrt{\textit{s}}=13}$$ TeV
- LPC
- Nuclear Physics Institute of the Czech Academy of Sciences
- Homi Bhabha National Institute
- European Organization for Nuclear Research (CERN)
- Dipartimento di Fisica dell’Università and Sezione INFN
- Dipartimento DISAT del Politecnico and Sezione INFN
- Dipartimento di Fisica e Astronomia dell’Università and Sezione INFN
- Aligarh Muslim University
- Korea Institute of Science and Technology Information
- P.J. Šafárik University
- Affiliated with an institute covered by a cooperation agreement with CERN
- Johann Wolfgang Goethe-Universität Frankfurt
- GSI Helmholtzzentrum für Schwerionenforschung GmbH
- Sezione di Torino
- Central China Normal University
- Universidad Nacional Autónoma de México
- University of Houston
- Sungkyunkwan University
- University of Bergen
- Dipartimento di Fisica dell’Università and Sezione INFN; Sezione di Cagliari
- Sezione di Bari
- Technische Universität München
- Universidad Autónoma de Puebla
- Horia Hulubei National Institute of Physics and Nuclear Engineering
- University of Derby
- Institut für Kernphysik
- Ruprecht-Karls-Universität Heidelberg
- Sezione di Padova
- Sezione di Bologna
- Lawrence Berkeley National Laboratory
- CNRS-IN2P3
- Universidade de São Paulo (USP)
- University of Oslo
- Yale University
- University of Tokyo
- Sezione di Catania
- Gangneung-Wonju National University
- University of Science and Technology of China
- Indian Institute of Technology Indore
- University of Jammu
- Départment de Physique Nucléaire (DPhN)
- AGH University of Krakow
- Bose Institute
- Dipartimento Interateneo di Fisica ‘M. Merlin’ and Sezione INFN
- Department of Physics
- HUN-REN Wigner Research Centre for Physics
- University of Liverpool
- Lund University
- Affiliated with an international laboratory covered by a cooperation agreement with CERN
- Indian Institute of Technology Bombay (IIT)
- Pontificia Universidad Católica del Perú
- University of Copenhagen
- France
- Universidad Autónoma de Sinaloa
- Institute of Space Science (ISS)
- Czech Technical University in Prague
- The University of Texas at Austin
- Università di Pavia; Sezione di Pavia
- Oak Ridge National Laboratory
- Pusan National University
- Sezione di Pavia; Università di Brescia
- Dipartimento Interateneo di Fisica ‘M. Merlin’ and Sezione INFN; Politecnico di Bari and Sezione INFN
- Sofia University
- Stefan Meyer Institut für Subatomare Physik (SMI)
- National Research Foundation; University of the Witwatersrand
- Polish Academy of Sciences
- Dipartimento di Fisica ‘E.R. Caianiello’ dell’Università and Gruppo Collegato INFN
- Universitatea Nationala de Stiinta si Tehnologie Politehnica Bucuresti
- Institut de Physique des 2 Infinis de Lyon
- Warsaw University of Technology
- Fudan University
- Central China Normal University; GSI Helmholtzzentrum für Schwerionenforschung GmbH
- Universidade Estadual de Campinas (UNICAMP)
- Technische Universität München; Max-Planck-Institut fur Physik
- Inha University
- National Institute for Subatomic Physics
- University of Tsukuba
- Sezione di Cagliari
- Sezione di Bologna; Energy and Sustainable Economic Development (ENEA)
- University of Birmingham
- IJCLab
- Sezione di Torino; Università del Piemonte Orientale
- Universidade Federal do ABC
- Università di Brescia
- University of California
- Centro de Aplicaciones Tecnológicas y Desarrollo Nuclear (CEADEN); Affiliated with an international laboratory covered by a cooperation agreement with CERN
- University of Cape Town
- Comenius University Bratislava
- Hiroshima University
- Laboratori Nazionali di Frascati
- Sezione di Torino; Dipartimento DET del Politecnico di Torino
- University of Houston; Yale University
- National Research Foundation
- Sezione di Trieste
- Saga University
- Chicago State University
- University of Kansas
- Universidade Federal do Rio Grande do Sul (UFRGS)
- Sezione di Torino; GSI Helmholtzzentrum für Schwerionenforschung GmbH
- University of Tennessee
- Nagasaki Institute of Applied Science
- Wayne State University
- University of Split
- Utrecht University/Nikhef
- A.I. Alikhanyan National Science Laboratory (Yerevan Physics Institute) Foundation; Affiliated with an international laboratory covered by a cooperation agreement with CERN
- Yonsei University
- University of Jyväskylä
- Rheinische Friedrich-Wilhelms-Universität Bonn
- Western Norway University of Applied Sciences
- Centro de Investigación y de Estudios Avanzados (CINVESTAV)
- Fachbereich Informatik und Mathematik
- Ohio State University
- University of California; Lawrence Berkeley National Laboratory
- Technical University of Košice
- National Research and Innovation Agency - BRIN
- China Institute of Atomic Energy
- European Organization for Nuclear Research (CERN); GSI Helmholtzzentrum für Schwerionenforschung GmbH
- Suranaree University of Technology
- Slovak Academy of Sciences
- KTO Karatay University; Yildiz Technical University
- University of Zagreb
- European Organization for Nuclear Research (CERN); Warsaw University of Technology
- Zentrum für Technologie und Transfer (ZTT)
- Jeonbuk National University
- European Organization for Nuclear Research (CERN); Jeonbuk National University
- Sejong University
- California Polytechnic State University
- European Organization for Nuclear Research (CERN); Johann Wolfgang Goethe-Universität Frankfurt
- Slovak Academy of Sciences; University of Birmingham
- Panjab University
- National Centre for Nuclear Research
- University of South-Eastern Norway
- European Organization for Nuclear Research (CERN); Technische Universität München
- STFC Daresbury Laboratory
- Centro de Aplicaciones Tecnológicas y Desarrollo Nuclear (CEADEN)
- GSI Helmholtzzentrum für Schwerionenforschung GmbH; University of Science and Technology of China
- Affiliated with an international laboratory covered by a cooperation agreement with CERN; An institution covered by a cooperation agreement with CERN
- Università di Messina; Sezione di Catania
- Sezione di Bari; Università degli Studi di Foggia
- Dipartimento di Fisica dell’Università and Sezione INFN; European Organization for Nuclear Research (CERN)
- University of the Witwatersrand
- Helsinki Institute of Physics (HIP)
- European Organization for Nuclear Research (CERN); Ruprecht-Karls-Universität Heidelberg
- Affiliated with an institute covered by a cooperation agreement with CERN; Affiliated with an international laboratory covered by a cooperation agreement with CERN
- Bose Institute; Università di Brescia
- Aligarh Muslim University; Aligarh Muslim University
- Chungbuk National University
- China University of Geosciences
- European Organization for Nuclear Research (CERN); Sezione di Bologna
- Creighton University
- Oak Ridge National Laboratory; University of Tennessee
- National Centre for Nuclear Research; Institute of Theoretical Physics, University of Wroclaw
- Dipartimento di Fisica e Astronomia dell’Università and Sezione INFN; Sezione di Bologna
- National Nuclear Research Center
- Eberhard-Karls-Universität Tübingen
- Stefan Meyer Institut für Subatomare Physik (SMI); France
- Nara Women’s University (NWU)
- European Organization for Nuclear Research (CERN); Institut für Kernphysik
- Politecnico di Bari and Sezione INFN
- Università di Messina; European Organization for Nuclear Research (CERN); Sezione di Catania
- National Academy of Sciences of Ukraine
- Sezione di Pavia
- A.I. Alikhanyan National Science Laboratory (Yerevan Physics Institute) Foundation; Affiliated with an institute covered by a cooperation agreement with CERN
- Institute of Physics of the Czech Academy of Sciences
- Central China Normal University; Ruprecht-Karls-Universität Heidelberg
- Central China Normal University; LPC
- Central China Normal University; Sezione di Padova
The production cross section of inclusive isolated photons has been measured by the ALICE experiment at the CERN LHC in pp collisions at centre-of-momentum energy of $$\mathbf {\sqrt{\textit{s}}=13}$$ TeV collected during the LHC Run 2 data-taking period. The measurement is performed by combining the measurements of the electromagnetic calorimeter EMCal and the central tracking detectors ITS and TPC, covering a pseudorapidity range of and a transverse momentum range of |ηγ| < 0.67 and a transverse momentum range 7 < p$$^{γ}_{T}$$ < 200 GeV/c. The result extends to lower p$$^{γ}_{T}$$ and x$$^{γ}_{T}$$ = 2p$$^{γ}_{T}$$/$$\sqrt{s}$$ ranges, the lowest x$$^{γ}_{T}$$ of any isolated photon measurements to date, extending significantly those measured by the ATLAS and CMS experiments towards lower p$$^{γ}_{T}$$ at the same collision energy with a small overlap between the measurements. The measurement is compared with next-to-leading order perturbative QCD calculations and the results from the ATLAS and CMS experiments as well as with measurements at other collision energies. The measurement and theory prediction are in agreement with each other within the experimental and theoretical uncertainties.
- Research Organization:
- Chicago Office, Argonne, IL (United States); European Organization for Nuclear Research (CERN), Geneva (Switzerland); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Yale University, New Haven, CT (United States)
- Sponsoring Organization:
- Academy of Finland; Czech Science Foundation; European Research Council; US Department of Energy; USDOE Office of Science (SC); USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25); USDOE Office of Science (SC), Nuclear Physics (NP)
- Contributing Organization:
- ALICE Collaboration
- Grant/Contract Number:
- AC02-05CH11231; AC05-00OR22725; FG02-96ER40982; SC0004168
- OSTI ID:
- 3011706
- Journal Information:
- European Physical Journal. C, Particles and Fields (Online), Journal Name: European Physical Journal. C, Particles and Fields (Online) Journal Issue: 1 Vol. 85; ISSN 1434-6052
- Publisher:
- Springer NatureCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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