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First measurement of symmetric cumulants of hexagonal flow harmonics in Pb-Pb collisions at sNN=5.02 TeV

S. Acharya50, A. Agarwal133, G. Aglieri Rinella32, L. Aglietta24, M. Agnello29, N. Agrawal25, Z. Ahammed133, S. Ahmad15, S. U. Ahn71 et al. (ALICE Collaboration)

S. U. Ahn71, I. Ahuja36, A. Akindinov139, V. Akishina38, M. Al-Turany96, D. Aleksandrov139, B. Alessandro56, H. M. Alfanda6, R. Alfaro Molina67, B. Ali15, A. Alici25, N. Alizadehvandchali114, A. Alkin103, J. Alme20, G. Alocco24, T. Alt64, A. R. Altamura50, I. Altsybeev94, J. R. Alvarado44, M. N. Anaam6, C. Andrei45, N. Andreou113, A. Andronic124, E. Andronov139, V. Anguelov93, F. Antinori54, P. Antonioli51, N. Apadula73, L. Aphecetche102, H. Appelshäuser64, C. Arata72, S. Arcelli25, R. Arnaldi56, J. G. M. C. A. Arneiro109, I. C. Arsene19, M. Arslandok136, A. Augustinus32, R. Averbeck96, D. Averyanov139, M. D. Azmi15, H. Baba122, A. Badalà53, J. Bae103, Y. Bae103, Y. W. Baek40, X. Bai118, R. Bailhache64, Y. Bailung48, R. Bala90, A. Baldisseri128, B. Balis2, Z. Banoo90, V. Barbasova36, F. Barile31, L. Barioglio56, M. Barlou77, B. Barman41, G. G. Barnaföldi46, L. S. Barnby113, E. Barreau102, V. Barret125, L. Barreto109, C. Bartels117, K. Barth32, E. Bartsch64, N. Bastid125, S. Basu74, G. Batigne102, D. Battistini94, B. Batyunya140, D. Bauri47, J.L. Bazo Alba100, I. G. Bearden82, P. Becht96, D. Behera48, I. Belikov127, A.D.C. Bell Hechavarria124, F. Bellini25, R. Bellwied114, S. Belokurova139, L. G. E. Beltran108, Y. A. V. Beltran44, G. Bencedi46, A. Bensaoula114, S. Beole24, Y. Berdnikov139, A. Berdnikova93, L. Bergmann93, L. Bernardinis23, M. G. Besoiu63, L. Betev32, P. P. Bhaduri133, A. Bhasin90, B. Bhattacharjee41, S. Bhattarai116, L. Bianchi24, J. Bielčík34, J. Bielčíková85, A. P. Bigot127, A. Bilandzic94, A. Binoy116, G. Biro46, S. Biswas4, N. Bize102, J. T. Blair107, D. Blau139, M. B. Blidaru96, N. Bluhme38, C. Blume64, F. Bock86, T. Bodova20, J. Bok16, L. Boldizsár46, M. Bombara36, P. M. Bond32, G. Bonomi132,55, H. Borel128, A. Borissov139, A.G. Borquez Carcamo93, E. Botta24, Y. E. M. Bouziani64, D. C. Brandibur63, L. Bratrud64, P. Braun-Munzinger96, M. Bregant109, M. Broz34, G. E. Bruno31,95, V. D. Buchakchiev35, M. D. Buckland84, D. Budnikov139, H. Buesching64, S. Bufalino29, P. Buhler101, N. Burmasov139, Z. Buthelezi121,68, A. Bylinkin20, S. A. Bysiak106, J.C. Cabanillas Noris108, M. F. T. Cabrera114, H. Caines136, A. Caliva28, E. Calvo Villar100, J. M. M. Camacho108, P. Camerini23, F. D. M. Canedo109, S. Cannito23, S. L. Cantway136, M. Carabas112, A. A. Carballo32, F. Carnesecchi32, L. A. D. Carvalho109, J. Castillo Castellanos128, M. Castoldi32, F. Catalano32, S. Cattaruzzi23, R. Cerri24, I. Chakaberia73, P. Chakraborty134, S. Chandra133, S. Chapeland32, M. Chartier117, S. Chattopadhay133, M. Chen39, T. Cheng6, C. Cheshkov126, D. Chiappara27, V. Chibante Barroso32, D. D. Chinellato101, F. Chinu24, E. S. Chizzali94,*, J. Cho58, S. Cho58, P. Chochula32, Z. A. Chochulska134, D. Choudhury41, S. Choudhury98, P. Christakoglou83, C. H. Christensen82, P. Christiansen74, T. Chujo123, M. Ciacco29, C. Cicalo52, G. Cimador24, F. Cindolo51, M. R. Ciupek96, G. Clai51,†, F. Colamaria50, J. S. Colburn99, D. Colella31, A. Colelli31, M. Colocci25, M. Concas32, G. Conesa Balbastre72, Z. Conesa del Valle129, G. Contin23, J. G. Contreras34, M. L. Coquet102, P. Cortese131,56, M. R. Cosentino111, F. Costa32, S. Costanza21, M. D. Costanzo29, P. Crochet125, M. M. Czarnynoga134, A. Dainese54, G. Dange38, M. C. Danisch93, A. Danu63, P. Das32,79, S. Das4, A. R. Dash124, S. Dash47, A. De Caro28, G. de Cataldo50, J. de Cuveland38, A. De Falco22, D. De Gruttola28, N. De Marco56, C. De Martin23, S. De Pasquale28, R. Deb132, R. Del Grande94, L. Dello Stritto32, W. Deng6, K. C. Devereaux18, G. G. A. de Souza109, P. Dhankher18, D. Di Bari31, A. Di Mauro32, B. Di Ruzza130, B. Diab128, R. A. Diaz140,7, Y. Ding6, J. Ditzel64, R. Divià32, Ø. Djuvsland20, U. Dmitrieva139, A. Dobrin63, B. Dönigus64, J. M. Dubinski134, A. Dubla96, P. Dupieux125, N. Dzalaiova13, T. M. Eder124, R. J. Ehlers73, F. Eisenhut64, R. Ejima91, D. Elia50, B. Erazmus102, F. Ercolessi25, B. Espagnon129, G. Eulisse32, D. Evans99, S. Evdokimov139, L. Fabbietti94, M. Faggin23, J. Faivre72, F. Fan6, W. Fan73, A. Fantoni49, M. Fasel86, G. Feofilov139, A. Fernández Téllez44, L. Ferrandi109, M. B. Ferrer32, A. Ferrero128, C. Ferrero56,‡, A. Ferretti24, V. J. G. Feuillard93, V. Filova34, D. Finogeev139, F. M. Fionda52, E. Flatland32, F. Flor136, A. N. Flores107, S. Foertsch68, I. Fokin93, S. Fokin139, U. Follo56,‡, E. Fragiacomo57, E. Frajna46, U. Fuchs32, N. Funicello28, C. Furget72, A. Furs139, T. Fusayasu97, J. J. Gaardhøje82, M. Gagliardi24, A. M. Gago100, T. Gahlaut47, C. D. Galvan108, S. Gami79, D. R. Gangadharan114, P. Ganoti77, C. Garabatos96, J. M. Garcia44, T. García Chávez44, E. Garcia-Solis9, S. Garetti129, C. Gargiulo32, P. Gasik96, H. M. Gaur38, A. Gautam116, M.B. Gay Ducati66, M. Germain102, R. A. Gernhaeuser94, C. Ghosh133, M. Giacalone51, G. Gioachin29, S. K. Giri133, P. Giubellino56,96, P. Giubilato27, A. M. C. Glaenzer128, P. Glässel93, E. Glimos120, D. J. Q. Goh75, V. Gonzalez135, P. Gordeev139, M. Gorgon2, K. Goswami48, S. Gotovac33, V. Grabski67, L. K. Graczykowski134, E. Grecka85, A. Grelli59, C. Grigoras32, V. Grigoriev139, S. Grigoryan1,140, F. Grosa32, J. F. Grosse-Oetringhaus32, R. Grosso96, D. Grund34, N. A. Grunwald93, R. Guernane72, M. Guilbaud102, K. Gulbrandsen82, J. K. Gumprecht101, T. Gündem64, T. Gunji122, J. Guo10, A. Gupta90, R. Gupta90, R. Gupta48, K. Gwizdziel134, L. Gyulai46, C. Hadjidakis129, F. U. Haider90, S. Haidlova34, M. Haldar4, H. Hamagaki75, Y. Han138, B. G. Hanley135, R. Hannigan107, J. Hansen74, M. R. Haque96, J. W. Harris136, A. Harton9, M. V. Hartung64, H. Hassan115, D. Hatzifotiadou51, P. Hauer42, L. B. Havener136, E. Hellbär32, H. Helstrup37, M. Hemmer64, T. Herman34, S. G. Hernandez114, G. Herrera Corral8, S. Herrmann126, K. F. Hetland37, B. Heybeck64, H. Hillemanns32, B. Hippolyte127, I. P. M. Hobus83, F. W. Hoffmann70, B. Hofman59, M. Horst94, A. Horzyk2, Y. Hou6, P. Hristov32, P. Huhn64, L. M. Huhta115, T. J. Humanic87, A. Hutson114, D. Hutter38, M. C. Hwang18, R. Ilkaev139, M. Inaba123, G. M. Innocenti32, M. Ippolitov139, A. Isakov83, T. Isidori116, M. S. Islam47,98, S. Iurchenko139, M. Ivanov96, M. Ivanov13, V. Ivanov139, K. E. Iversen74, M. Jablonski2, B. Jacak18,73, N. Jacazio25, P. M. Jacobs73, S. Jadlovska105, J. Jadlovsky105, S. Jaelani81, C. Jahnke110, M. J. Jakubowska134, M. A. Janik134, T. Janson70, S. Ji16, S. Jia10, T. Jiang10, A. A. P. Jimenez65, F. Jonas73, D. M. Jones117, J. M. Jowett32,96, J. Jung64, M. Jung64, A. Junique32, A. Jusko99, J. Kaewjai104, P. Kalinak60, A. Kalweit32, A. Karasu Uysal137, D. Karatovic88, N. Karatzenis99, O. Karavichev139, T. Karavicheva139, E. Karpechev139, M. J. Karwowska134, U. Kebschull70, M. Keil32, B. Ketzer42, J. Keul64, S. S. Khade48, A. M. Khan118, S. Khan15, A. Khanzadeev139, Y. Kharlov139, A. Khatun116, A. Khuntia34, Z. Khuranova64, B. Kileng37, B. Kim103, C. Kim16, D. J. Kim115, D. Kim103, E. J. Kim69, J. Kim138, J. Kim58, J. Kim32,69, M. Kim18, S. Kim17, T. Kim138, K. Kimura91, S. Kirsch64, I. Kisel38, S. Kiselev139, A. Kisiel134, J. L. Klay5, J. Klein32, S. Klein73, C. Klein-Bösing124, M. Kleiner64, T. Klemenz94, A. Kluge32, C. Kobdaj104, R. Kohara122, T. Kollegger96, A. Kondratyev140, N. Kondratyeva139, J. Konig64, S. A. Konigstorfer94, P. J. Konopka32, G. Kornakov134, M. Korwieser94, S. D. Koryciak2, C. Koster83, A. Kotliarov85, N. Kovacic88, V. Kovalenko139, M. Kowalski106, V. Kozhuharov35, G. Kozlov38, I. Králik60, A. Kravčáková36, L. Krcal32, M. Krivda60,99, F. Krizek85, K. Krizkova Gajdosova34, C. Krug66, M. Krüger64, D. M. Krupova34, E. Kryshen139, V. Kučera58, C. Kuhn127, P. G. Kuijer83, T. Kumaoka123, D. Kumar133, L. Kumar89, N. Kumar89, S. Kumar50, S. Kundu32, M. Kuo123, P. Kurashvili78, A. B. Kurepin139, A. Kuryakin139, S. Kushpil85, V. Kuskov139, M. Kutyla134, A. Kuznetsov140, M. J. Kweon58, Y. Kwon138, S.L. La Pointe38, P. La Rocca26, A. Lakrathok104, M. Lamanna32, S. Lambert102, A. R. Landou72, R. Langoy119, P. Larionov32, E. Laudi32, L. Lautner94, R. A. N. Laveaga108, R. Lavicka101, R. Lea132,55, H. Lee103, I. Legrand45, G. Legras124, J. Lehrbach38, A. M. Lejeune34, T. M. Lelek2, R. C. Lemmon84,§, I. León Monzón108, M. M. Lesch94, P. Lévai46, M. Li6, P. Li10, X. Li10, B. E. Liang-Gilman18, J. Lien119, R. Lietava99, I. Likmeta114, B. Lim24, H. Lim16, S. H. Lim16, S. Lin10, V. Lindenstruth38, C. Lippmann96, D. Liskova105, D. H. Liu6, J. Liu117, G. S. S. Liveraro110, I. M. Lofnes20, C. Loizides86, S. Lokos106, J. Lömker59, X. Lopez125, E. López Torres7, C. Lotteau126, P. Lu118,96, Z. Lu10, F. V. Lugo67, J. R. Luhder124, J. Luo39, G. Luparello57, Y. G. Ma39, M. Mager32, A. Maire127, E. M. Majerz2, M. V. Makariev35, M. Malaev139, G. Malfattore25,51, N. M. Malik90, S. K. Malik90, D. Mallick129, N. Mallick115,48, G. Mandaglio30,53, S. K. Mandal78, A. Manea63, V. Manko139, F. Manso125, G. Mantzaridis94, V. Manzari50, Y. Mao6, R. W. Marcjan2, G. V. Margagliotti23, A. Margotti51, A. Marín96, C. Markert107, P. Martinengo32, M. 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Yu12, S. Yuan20, A. Yuncu93, V. Zaccolo23, C. Zampolli32, F. Zanone93, N. Zardoshti32, A. Zarochentsev139, P. Závada62, N. Zaviyalov139, M. Zhalov139, B. Zhang93, C. Zhang128, L. Zhang39, M. Zhang125,6, M. Zhang6, S. Zhang39, X. Zhang6, Y. Zhang118, Z. Zhang6, M. Zhao10, V. Zherebchevskii139, Y. Zhi10, D. Zhou6, Y. Zhou82, J. Zhu54,6, S. Zhu118,96, Y. Zhu6, S. C. Zugravel56, and N. Zurlo132,55 (ALICE Collaboration)

  • *Also at Max-Planck-Institut fur Physik, Munich, Germany.
  • †Also at Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), Bologna, Italy.
  • ‡Also at Dipartimento DET del Politecnico di Torino, Turin, Italy.
  • §Deceased.
  • ∥Also at Department of Applied Physics, Aligarh Muslim University, Aligarh, India.
  • Also at Institute of Theoretical Physics, University of Wroclaw, Poland.
  • **Also at Facultad de Ciencias, Universidad Nacional Autónoma de México, Mexico City, Mexico.

Phys. Rev. C 112, 024905 – Published 18 August, 2025

DOI: https://doi.org/10.1103/4ltm-g1qg

Abstract

Correlations between event-by-event fluctuations of anisotropic flow harmonics are measured in Pb-Pb collisions at a center-of-mass energy per nucleon pair of 5.02 TeV, as recorded by the ALICE detector at the LHC. This study presents correlations up to the hexagonal flow harmonic v6, which was measured for the first time. The magnitudes of these higher-order correlations are found to vary as a function of collision centrality and harmonic order. These measurements are compared to viscous hydrodynamic model calculations with EKRT initial conditions and to the iEBE-VISHNU model with TRENTo initial conditions. The observed discrepancies between the data and the model calculations vary depending on the harmonic combinations. Due to the sensitivity of model parameters estimated with Bayesian analyses to these higher-order observables, the results presented in this work provide new and independent constraints on the initial conditions and transport properties in theoretical models used to describe the system created in heavy-ion collisions.

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