Centrality determination in heavy-ion collisions with the LHCb detector

collaboration, LHCb; Aaij, R; Beteta, C Abellán; Ackernley, T; Adeva, B; Adinolfi, M; Afsharnia, H; Aidala, CA; Aiola, S; Ajaltouni, Z; Akar, S; Albrecht, J; Alessio, F; Alexander, M; Albero, A Alfonso; Aliouche, Z; Alkhazov, G; Cartelle, P Alvarez; Amato, S; Amhis, Y; An, L; Anderlini, L; Andreianov, A; Andreotti, M; Archilli, F; Artamonov, A; Artuso, M; Arzymatov, K; Aslanides, E; Atzeni, M; Audurier, B; Bachmann, S; Bachmayer, M; Back, JJ; Rodriguez, P Baladron; Balagura, V; Baldini, W; Leite, J Baptista; Barlow, RJ; Barsuk, S; Barter, W; Bartolini, M; Baryshnikov, F; Basels, JM; Bassi, G; Batsukh, B; Battig, A; Bay, A; Becker, M; Bedeschi, F; Bediaga, I; Beiter, A; Belavin, V; Belin, S; Bellee, V; Belous, K; Belov, I; Belyaev, I; Bencivenni, G; Ben-Haim, E; Berezhnoy, A; Bernet, R; Berninghoff, D; Bernstein, HC; Bertella, C; Bertolin, A; Betancourt, C; Betti, F; Bezshyiko, Ia; Bhasin, S; Bhom, J; Bian, L; Bieker, MS; Bifani, S; Billoir, P; Birch, M; Bishop, FCR; Bitadze, A; Bizzeti, A; 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Liu, G; Liu, H; Liu, S; Liu, X; Loi, A; Castro, J Lomba; Longstaff, I; Lopes, JH; Lovell, GH; Lu, Y; Lucchesi, D; Luchuk, S; Martinez, M Lucio; Lukashenko, V; Luo, Y; Lupato, A; Luppi, E; Lupton, O; Lusiani, A; Lyu, X; Ma, L; Ma, R; Maccolini, S; Machefert, F; Maciuc, F; Macko, V; Mackowiak, P; Maddrell-Mander, S; Madejczyk, O; Mohan, LR Madhan; Maev, O; Maevskiy, A; Maisuzenko, D; Majewski, MW; Malczewski, JJ; Malde, S; Malecki, B; Malinin, A; Maltsev, T; Malygina, H; Manca, G; Mancinelli, G; Manuzzi, D; Marangotto, D; Maratas, J; Marchand, JF; Marconi, U; Mariani, S; Benito, C Marin; Marinangeli, M; Marks, J; Marshall, AM; Marshall, PJ; Martellotti, G; Martinazzoli, L; Martinelli, M; Santos, D Martinez; Vidal, F Martinez; Massafferri, A; Materok, M; Matev, R; Mathad, A; Mathe, Z; Matiunin, V; Matteuzzi, C; Mattioli, KR; Mauri, A; Maurice, E; Mauricio, J; Mazurek, M; McCann, M; Mcconnell, L; Mcgrath, TH; McNab, A; McNulty, R; Mead, JV; Meadows, B; Meaux, C; Meier, G; Meinert, N; Melnychuk, D; 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Authors

collaboration, LHCb

Aaij, R

Beteta, C Abellán

Ackernley, T

Adeva, B

Adinolfi, M

Afsharnia, H

Publication Date

2022-05-05

Journal Title

Journal of Instrumentation

ISSN

1748-0221

Publisher

IOP Publishing

Volume

Issue

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Article

This Version

VoR

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Citation

collaboration, L., Aaij, R., Beteta, C. A., Ackernley, T., Adeva, B., Adinolfi, M., Afsharnia, H., et al. (2022). Centrality determination in heavy-ion collisions with the LHCb detector. Journal of Instrumentation, 17 (05) https://doi.org/10.1088/1748-0221/17/05/p05009

Abstract

The centrality of heavy-ion collisions is directly related to the medium created therein. A procedure to determine the centrality of collisions with the LHCb detector is implemented for lead-lead collisions at $\sqrt{s_{\scriptscriptstyle\text{NN}}}=5\, \mathrm{TeV}$ and lead-neon fixed-target collisions at $\sqrt{s_{\scriptscriptstyle\text{NN}}}=69\, \mathrm{GeV}$. The energy deposits in the electromagnetic calorimeter are used to determine and define the centrality classes. The correspondence between the number of participants and the centrality for the lead-lead collisions is in good agreement with the correspondence found in other experiments, and the centrality measurements for the lead-neon collisions presented here are the first performed in fixed-target collisions at the LHC.

Keywords

paper, Pattern recognition, cluster finding, calibration and fitting methods, Performance of High Energy Physics Detectors, Simulation methods and programs

Identifiers

jinst_018p_1121, jinst_018p_1121

External DOI: https://doi.org/10.1088/1748-0221/17/05/p05009

This record's URL: https://www.repository.cam.ac.uk/handle/1810/336873

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http://creativecommons.org/licenses/by/4.0/

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