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Proceedings 2019, 10(1), 1;

Direct Photon Measurements with the ALICE Experiment at the LHC

SUBATECH, IMT Atlantique, Université de Nantes, CNRS-IN2P3 Nantes, France
Presented at Hot Quarks 2018—Workshop for Young Scientists on the Physics of Ultrarelativistic Nucleus-Nucleus Collisions, Texel, The Netherlands, 7–14 September 2018.
Published: 3 April 2019
PDF [908 KB, uploaded 3 April 2019]


In high-energy hadron collisions, direct photons can be produced in various processes and
are of particular interest to study the hot QCD medium since they escape it without being affected.
These proceedings present the latest ALICE experiment results concerning direct photon production
in proton-proton (pp), proton-lead (p–Pb) and lead-lead (Pb–Pb) collisions. All measurements agree
with pQCD calculations at high transverse momentum (pT) and show no direct photon excess at low
pT in small systems while a low-pT signal is found in central Pb–Pb collisions.
Keywords: direct photons; thermal radiation; isolated photons; pQCD direct photons; thermal radiation; isolated photons; pQCD
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Masson, E., , on behalf of the ALICE Collaboration. Direct Photon Measurements with the ALICE Experiment at the LHC. Proceedings 2019, 10, 1.

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