The centrality of heavy-ion collisions is directly related to the created medium in these interactions. A procedure to determine the centrality of collisions with the LHCb detector is implemented for lead-lead collisions at √s NN = 5 TeV and lead-neon fixed-target collisions at √s NN = 69 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 performed for the first time in fixed-target collisions at the LHC.

Centrality determination in heavy-ion collisions with the LHCb detector / R. Aaij, C.A.B.. - In: JOURNAL OF INSTRUMENTATION. - ISSN 1748-0221. - 17:5(2022 May 05), pp. P05009.1-P05009.32. [10.1088/1748-0221/17/05/P05009]

Centrality determination in heavy-ion collisions with the LHCb detector

D. Marangotto;A. Merli;N. Neri;M. Petruzzo;E. Spadaro Norella;
2022

Abstract

The centrality of heavy-ion collisions is directly related to the created medium in these interactions. A procedure to determine the centrality of collisions with the LHCb detector is implemented for lead-lead collisions at √s NN = 5 TeV and lead-neon fixed-target collisions at √s NN = 69 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 performed for the first time in fixed-target collisions at the LHC.
attern recognition, cluster finding, calibration and fitting methods; Performance of High Energy Physics Detectors; Simulation methods and programs;
Settore FIS/01 - Fisica Sperimentale
Settore FIS/04 - Fisica Nucleare e Subnucleare
5-mag-2022
Article (author)
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/1024677
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