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Centrality determination in heavy-ion collisions with the LHCb detector

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...

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Bibliographic Details
Published in:Journal of instrumentation 2022-05, Vol.17 (5), p.P05009
Main Authors: Beiter, A., Belavin, V., Bifani, S., Bitadze, A., Bondar, A., Borisyak, M., Brodski, M., Butkevich, A., Cai, H., Campana, P., Carvalho Akiba, K., Chobanova, V., Coco, V., Costa Sobral, C.M., Currie, R., De Aguiar Francisco, O., De Capua, S., de Vries, J.A., Dendek, A., Douglas, L., Ely, S., Fernez, A.D., Fischer, K.M., Fontanelli, F., Forty, R., Frank, M., Franzoso, E., Garcia Martin, L.M., Gerstel, D., Ghez, Ph, Gironella Gironell, P., Gizdov, K., Golubkov, D., Gomez Fernandez, S., Gotti, C., Govorkova, E., Guth, A., Haimberger, J., Halewood-leagas, T., Hatch, M., Heijhoff, K., Hollitt, S.E., Karpov, M., Kirn, T., Kirsebom, V.S., Koliiev, S., Kot, O., Kress, F., Li, Z., Lopes, J.H., Luo, Y., Ma, R., Maccolini, S., Maddrell-Mander, S., Maev, O., Maisuzenko, D., Majewski, M.W., Malygina, H., Martellotti, G., Martinazzoli, L., Massafferri, A., Matiunin, V., Mcgrath, T.H., Meadows, B., Mohammed, R.A., Morello, G., Morris, A.G., Müller, D., Nguyen, T.D., Pajero, T., Palutan, M., Perazzini, S., Quagliani, R., Rabadan Trejo, R.I., Rama, M., Ratnikov, F., Reiss, F., Ribatti, R., Sazak, H., Schmelling, M., Schneider, O., Schune, M.H., Seuthe, A., Stramaglia, M.E., Tuci, G., Valenti, G., Vazquez Regueiro, P., Wang, C., Wang, J., Wang, M., Wang, Z., Wormser, G., Yu, J., Zhang, D., Zhelezov, A., Zhou, X., Zhukov, V., Zou, Q., Zunica, G.
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Language:English
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Summary: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.
ISSN:1748-0221
1748-0221
DOI:10.1088/1748-0221/17/05/P05009