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Neutral meson production measurements with the ALICE at the LHC

By Paraskevi Ganoti


Identified hadron spectra are considered to be sensitive to the transport properties of strongly interacting matter produced in high-energy nucleus-nucleus collisions. π0 and η mesons in ALICE are identified via their two-photon decays by using calorimeters and the central tracking system. In the latter, photons are measured via their conversion to electron-positron pairs in the material of the inner ALICE barrel tracking detectors. The measured production spectra in pp, p–Pb and Pb–Pb collisions at mid–rapidity and over a wide pT range will be presented in the available Large Hadron Collider (LHC) energies of Run I. The resulting nuclear modification factor RAA at different centrality classes shows a clear pattern of strong suppression in the hot QCD medium with respect to pp collisions. Comparison of the ALICE results on neutral mesons with lower-energy experiments is also discussed

Topics: Particle Physics - Experiment, Nuclear Physics - Experiment
Publisher: 'EDP Sciences'
Year: 2017
DOI identifier: 10.1051/epjconf/201713707007
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Provided by: CERN Document Server
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