TY - JOUR
T1 - ALICE luminosity determination for Pb-Pb collisions at √ s NN= 5.02 TeV
AU - ALICE Collaboration
AU - Acharya, S.
AU - Adamová, D.
AU - Adler, A.
AU - Aglieri Rinella, G.
AU - Agnello, M.
AU - Agrawal, N.
AU - Ahammed, Z.
AU - Ahmad, S.
AU - Ahn, S. U.
AU - Ahuja, I.
AU - Akindinov, A.
AU - Al-Turany, M.
AU - Aleksandrov, D.
AU - Alessandro, B.
AU - Alfanda, H. M.
AU - Alfaro Molina, R.
AU - Ali, B.
AU - Ali, Y.
AU - Alici, A.
AU - Alizadehvandchali, N.
AU - Alkin, A.
AU - Alme, J.
AU - Alocco, G.
AU - Alt, T.
AU - Altsybeev, I.
AU - Anaam, M. N.
AU - Andrei, C.
AU - Andronic, A.
AU - Anguelov, V.
AU - Antinori, F.
AU - Antonioli, P.
AU - Anuj, C.
AU - Apadula, N.
AU - Aphecetche, L.
AU - Christakoglou, P.
AU - Grelli, A.
AU - Hofman, B.
AU - Isakov, A.
AU - Keijdener, D. L.D.
AU - Kuijer, P. G.
AU - Mohanty, A. P.
AU - Peitzmann, T.
AU - Qiu, S.
AU - Snellings, R. J.M.
AU - Spijkers, R.
AU - Van Doremalen, L. V.R.
AU - Van Leeuwen, M.
AU - Van Weelden, R. J.G.
AU - Vermunt, L.
AU - Verweij, M.
AU - Correia Zanoli, Henrique
AU - Pliatskas Stylianidis, Christos
N1 - Publisher Copyright:
© 2024 Institute of Physics. All rights reserved.
PY - 2024/2/1
Y1 - 2024/2/1
N2 - 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 √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 √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.
AB - 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 √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 √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.
KW - Analysis and statistical methods
KW - Data processing methods
UR - https://www.scopus.com/pages/publications/85187168113
U2 - 10.1088/1748-0221/19/02/P02039
DO - 10.1088/1748-0221/19/02/P02039
M3 - Article
AN - SCOPUS:85187168113
SN - 1748-0221
VL - 19
JO - Journal of Instrumentation
JF - Journal of Instrumentation
IS - 2
M1 - P02039
ER -