Centrality determination in heavy-ion collisions with the LHCb detector

Aaij, R; Beteta, CA; Ackernley, T; Adeva, B; Adinolfi, M; Afsharnia, H; Aidala, CA; Aiola, S; Ajaltouni, Z; Akar, S; Albrecht, J; Alessio, F; Alexander, M; Albero, AA; Aliouche, Z; Alkhazov, G; Cartelle, PA; 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; Baker, S; Rodriguez, PB; Balagura, V; Baldini, W; Leite, JB; Barlow, RJ; Barsuk, S; Barter, W; Bartolini, M; Baryshnikov, F; Basels, JM; Bassi, G; Batozskaya, V; 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; Bertholet, E; Bertolin, A; Betancourt, C; Betti, F; Bettler, MO; Bezshyiko, I; Bhasin, S; Bhom, J; Bian, L; Bieker, MS; Bifani, S; Billoir, P; Birch, M; Bishop, FCR; Bizzeti, A; Bjørn, M; Blago, MP; Blake, T; Blanc, F; Blusk, S; Bobulska, D; Boelhauve, JA; Garcia, OB; Boettcher, T; Boldyrev, A; Bondar, A; Bondar, N; Borghi, S; Borisyak, M; Borsato, M; Borsuk, JT; Bouchiba, SA; Bowcock, TJV; Boyer, A

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Authors

Aaij, R

Beteta, CA

Ackernley, T

Adeva, B

Adinolfi, M

Afsharnia, H

Aidala, CA

Publication Date

2022

Journal Title

Journal of Instrumentation

ISSN

1748-0221

Publisher

IOP Publishing

Volume

Issue

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Type

Article

This Version

VoR

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Citation

Aaij, R., Beteta, C., Ackernley, T., Adeva, B., Adinolfi, M., Afsharnia, H., Aidala, C., 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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