ALICE luminosity determination for Pb-Pb collisions at root sNN=5.02 TeV

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F24%3A00377081" target="_blank" >RIV/68407700:21340/24:00377081 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1088/1748-0221/19/02/P02039" target="_blank" >https://doi.org/10.1088/1748-0221/19/02/P02039</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1748-0221/19/02/P02039" target="_blank" >10.1088/1748-0221/19/02/P02039</a>

Result language
angličtina
Original language name
ALICE luminosity determination for Pb-Pb collisions at root sNN=5.02 TeV
Original language description
Luminosity determination within the ALICE experiment is based on the measurement, in van der Meer scans, of the cross sections for visible processes involving one or more detectors (visible cross sections). In 2015 and 2018, the Large Hadron Collider provided Pb-Pb collisions at a centre-of-mass energy per nucleon pair of root s(NN) = 5.02 TeV. Two visible cross sections, associated with particle detection in the Zero Degree Calorimeter (ZDC) and in the V0 detector, were measured in a van der Meer scan. This article describes the experimental set-up and the analysis procedure, and presents the measurement results. The analysis involves a comprehensive study of beam-related effects and an improved fitting procedure, compared to previous ALICE studies, for the extraction of the visible cross section. The resulting uncertainty of both the ZDC-based and the V0-based luminosity measurement for the full sample is 2.5%. The inelastic cross section for hadronic interactions in Pb-Pb collisions at root s(NN) = 5.02 TeV, obtained by efficiency correction of the V0-based visible cross section, was measured to be 7.67 +/- 0.25 b, in agreement with predictions using the Glauber model.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10303 - Particles and field physics

Project
<a href="/en/project/LM2018104" target="_blank" >LM2018104: Research Infrastructure for experiments at CERN</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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