Measurement of the inclusive isolated-photon production cross section in pp collisions at (Formula presented.) TeV

ALICE Collaboration

doi:10.1140/epjc/s10052-024-13506-x

Measurement of the inclusive isolated-photon production cross section in pp collisions at (Formula presented.) TeV

ALICE Collaboration

Sección de Física

CERN
National Institute for Nuclear Physics
Università di Brescia
Sezione INFN
Central China Normal University
University of Science and Technology of China
University of Copenhagen
China Institute of Atomic Energy
Fudan University
Université Clermont Auvergne
CNRS-IN2P3
Ruprecht-Karls-Universität Heidelberg
Institute of Physics of the Czech Academy of Sciences
University of Bergen
Chungbuk National University
Inha University
Pusan National University
University of California at Berkeley
Hiroshima University
Variable Energy Cyclotron Centre
Rheinische Friedrich-Wilhelms-Universität Bonn
University of Texas at Austin
University of Münster
GSI Helmholtzzentrum für Schwerionenforschung
National Centre for Nuclear Studies
University of Oslo
Goethe University Frankfurt
Frankfurt Institute for Advanced Studies
Pavol Jozef Šafárik University
Wayne State University
University of Jyväskylä
University of Birmingham
University of the Witwatersrand
University of Split
Institute for Subatomic Physics of Utrecht University
Wigner Research Centre for Physics
Indian Institute of Technology Bombay
Benemérita Universidad Autónoma de Puebla
University of Houston
INFN, Laboratori Nazionali Di Frascati
A. Alikhanian Yerevan Institute of Physics
National and Kapodistrian University of Athens
Universidad Nacional Autónoma de México
National Institute for Subatomic Physics
Université de Lyon
Technical University of Munich
Warsaw University of Technology
Bogolyubov Institute for Theoretical Physics Nasu
University of Messina
Dipartimento di Fisica e Astronomia dell'Università and Sezione INFN
Polytechnic University of Bari
Nantes Université
Technical University of Košice
Bose Institute
National Institute for Physics and Nuclear Engineering
National University of Science and Technology POLITEHNICA Bucharest
University of Kansas
Homi Bhabha National Institute
Universidade Estadual de Campinas
Centro de Aplicaciones Tecnológicas y Desarrollo Nuclear
Comenius University
National Research and Innovation Agency Republic of Indonesia
University of Jammu
Universidade de São Paulo
University of Tennessee
Institute of Space Science (ISS)
University of Lund
Henryk Niewodniczanski Institute of Nuclear Physics of the Polish Academy of Sciences
Ohio State University
Yale University
Università del Piemonte Orientale and Gruppo Collegato INFN
Aligarh Muslim University
Indian Institute of Technology Indore
Sofia University St. Kliment Ohridski
Suranaree University of Technology
Nara Women's University
Nagasaki Institute of Applied Science
National Research Foundation
Université de Strasbourg
Tokyo University
Creighton University
Austrian Academy of Sciences
Oak Ridge National Laboratory
Eberhard Karls Universität Tübingen
Gauhati University
University of Tsukuba
Faculty of Nuclear Sciences and Physical Engineering
National Nuclear Research Center
AGH University of Krakow
Western Norway University of Applied Sciences
University of Wrocław
Universidade Federal do ABC
University of Helsinki
Dipartimento di Fisica e Astronomia dell’Università and Sezione INFN
University of Zagreb
Lawrence Berkeley National Laboratory
China University of Geosciences
Sungkyunkwan University
Sejong University
University of Liverpool
Slovak Academy of Sciences
University of Cape Town
Università degli Studi di Foggia
University of South-Eastern Norway
Universidad Autonoma de Sinaloa
STFC Daresbury Laboratory
Université Grenoble Alpes
Yonsei University
Czech Academy of Sciences
Panjab University
Universidade Federal do Rio Grande do Sul
California Polytechnic State University, San Luis Obispo
Jeonbuk National University
Zentrum für Technologie und Transfer (ZTT)
KTO Karatay University
Yildiz Technical University
Centro de Investigación y de Estudios AVanzados (CINVESTAV)
Chicago State University
Saga University
Polytechnic University of Turin
University of Pavia
Agenzia nazionale per le nuove tecnologie, l'energia e lo sviluppo economico sostenibile
Max Planck Institute for Physics (Werner Heisenberg Institute)
Pontifical Catholic Univ. of Peru
University of Derby
Gangneung-Wonju National University
Korea Institute of Science and Technology Information

Research output: Contribution to journal › Article › peer-review

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Abstract

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 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 |ηγ|<0.67 and a transverse momentum range of 7<pTγ<200GeV/c. The result extends to lower pTγ and xTγ=2pTγ/s ranges, the lowest xTγ of any isolated photon measurements to date, extending significantly those measured by the ATLAS and CMS experiments towards lower pTγ 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.

Original language	English
Article number	98
Journal	European Physical Journal C
Volume	85
Issue number	1
DOIs	https://doi.org/10.1140/epjc/s10052-024-13506-x
State	Published - Jan 2025

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10.1140/epjc/s10052-024-13506-x

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title = "Measurement of the inclusive isolated-photon production cross section in pp collisions at (Formula presented.) TeV",

abstract = "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 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 |ηγ|<0.67 and a transverse momentum range of 7",

author = "ALICE Collaboration and N. Zurlo and Zugravel, \{S. C.\} and Y. Zhu and S. Zhu and J. Zhu and Y. Zhou and D. Zhou and Y. Zhi and V. Zherebchevskii and M. Zhao and Z. Zhang and Y. Zhang and X. Zhang and S. Zhang and M. Zhang and M. Zhang and L. Zhang and C. Zhang and B. Zhang and M. Zhalov and N. Zaviyalov and P. Z{\'a}vada and A. Zarochentsev and N. Zardoshti and F. Zanone and C. Zampolli and V. Zaccolo and A. Yuncu and S. Yuan and H. Yu and Yoon, \{J. H.\} and Yoo, \{I. K.\} and Z. Yin and Yeats, \{E. R.\} and S. Yano and S. Yang and Y. Yamaguchi and Yadav, \{A. K.\} and A. Yadav and R. Xu and Z. Xiong and Y. Wu and W. Wu and Wright, \{J. R.\} and M. Winn and B. Windelband and Willems, \{G. A.\} and J. Wilkinson and Gago, \{A. M.\} and Alba, \{J. L.Bazo\}",

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AU - Zhu, J.

AU - Zhou, Y.

AU - Zhou, D.

AU - Zhi, Y.

AU - Zherebchevskii, V.

AU - Zhao, M.

AU - Zhang, Z.

AU - Zhang, Y.

AU - Zhang, X.

AU - Zhang, S.

AU - Zhang, M.

AU - Zhang, L.

AU - Zhang, C.

AU - Zhang, B.

AU - Zhalov, M.

AU - Zaviyalov, N.

AU - Závada, P.

AU - Zarochentsev, A.

AU - Zardoshti, N.

AU - Zanone, F.

AU - Zampolli, C.

AU - Zaccolo, V.

AU - Yuncu, A.

AU - Yuan, S.

AU - Yu, H.

AU - Yoon, J. H.

AU - Yoo, I. K.

AU - Yin, Z.

AU - Yeats, E. R.

AU - Yano, S.

AU - Yang, S.

AU - Yamaguchi, Y.

AU - Yadav, A. K.

AU - Yadav, A.

AU - Xu, R.

AU - Xiong, Z.

AU - Wu, Y.

AU - Wu, W.

AU - Wright, J. R.

AU - Winn, M.

AU - Windelband, B.

AU - Willems, G. A.

AU - Wilkinson, J.

AU - Gago, A. M.

AU - Alba, J. L.Bazo

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Measurement of the inclusive isolated-photon production cross section in pp collisions at (Formula presented.) TeV

Abstract

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