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    Measurement of the transverse energy density in Au+Au collisions at sNN=200GeV with the sPHENIX detector

    M. I. Abdulhamid13, U. Acharya13, E. R. Adams7, G. Adawi13, C. A. Aidala26, Y. Akiba39, M. Alfred14, S. Ali13, A. Alsayegh10 et al. (sPHENIX Collaboration)

    A. Alsayegh10, S. Altaf15, H. Amedi13, D. M. Anderson17, V. V. Andrieux15, A. Angerami21, N. Applegate17, H. Aso41, S. Aune6, B. Azmoun3, V. R. Bailey13, D. Baranyai9, S. Bathe2, A. Bazilevsky3, S. Bela22, R. Belmont33, J. Bennett15, J. C. Bernauer43, J. Bertaux37, R. Bi7, A. Bonenfant6, S. Boose3, C. Borchers13, H. Bossi25, R. Botsford22, R. Boucher11, A. Brahma13, J. W. Bryan35, D. Cacace3, I. Cali25, M. Chamizo-Llatas3, S. B. Chauhan35, A. Chen22, D. Chen43, J. Chen12, K. Chen5, K. Y. Chen30, K. Y. Cheng30, C.-Y. Chi8, M. Chiu3, J. Clement7, E. W. Cline43, M. Connors13, E. Cook15, R. Corliss43, Y. Corrales Morales25, E. Croft22, N. d'Hose6, A. Dabas13, D. Dacosta13, M. Daradkeh13, S. J. Das7, A. P. Dash4, G. David9,43, C. T. Dean25, K. Dehmelt43, X. Dong20, A. Drees43, J. M. Durham23, A. Enokizono39, H. Enyo39, J. Escobar Cepero13, R. Esha43, B. Fadem28, R. Feder3, K. Finnelli43, D. Firak43, A. Francisco6, J. Frantz35, A. Frawley11, K. Fujiki41, M. Fujiwara29, B. Garcia7, P. Garg43, G. Garmire15, E. Gentry7, Y. Go3, C. Goblin6, W. Goodman22, Y. Goto39, A. Grabas6, O. Grachov48, J. Granato22, N. Grau1, S. V. Greene47, S. K. Grossberndt2, R. Guidolini-Cecato3, T. Hachiya29, J. S. Haggerty3, R. Hamilton7, J. Hammond3, D. A. Hangal21, S. Hasegawa18, M. Hata29, W. He12, X. He13, T. Hemmick43, A. Hodges15, M. E. Hoffmann22, A. Holt14, B. Hong19, M. Housenga15, S. Howell43, Y. Hu20, H. Z. Huang4, J. Huang3, T. C. Huang32, D. A. Huffman22, C. Hughes17,22, J. Hwang19, T. Ichino41, M. Ikemoto29, D. Imagawa41, H. Imai41, D. Jah7, J. James47, H.-R. Jheng25, Y. Ji20, Z. Ji4, H. Jiang8, M. Kano29, L. Kasper47, T. Kato41, Y. Kawashima41, M. S. Khan13, T. Kikuchi41, J. Kim50, B. Kimelman47, H. T. Klest43, A. G. Knospe22, M. B. Knuesel7, H. S. Ko20, J. Kuczewski3, N. Kumar2, R. Kunnawalkam Elayavalli47, C. M. Kuo30, J. Kvapil23, Y. Kwon50, J. Lajoie34, J. D. Lang7, A. Lebedev17, S. Lee45, L. Legnosky43, S. Li8, X. Li23, T. Lian22, S. Liechty7, S. Lim38, D. Lis7, M. X. Liu23, W. J. Llope48, D. A. Loomis26, R.-S. Lu32, L. Ma12, W. Ma12, V. Mahaut6, T. Majoros9, I. Mandjavidze6, E. Mannel3, C. Markert46, T. R. Marshall4, C. Martin45, H. Masuda41, G. Mattson15, M. Mazeikis15, C. McGinn25, E. McLaughlin8, J. Mead3, Y. Mei20, T. Mengel7,45, M. Meskowitz22, J. Mills3, A. Milov49, C. Mironov25, G. Mitsuka40, N. Morimoto29, D. Morrison3, L. W. Mwibanda10, C.-J. Naïm43, J. L. Nagle7, I. Nakagawa39, Y. Nakamura41, G. Nakano41, A. Narde15, C. E. Nattrass45, D. Neff6, S. Nelson27, D. Nemoto41, P. A. Nieto-Marín17, R. Nouicer3, G. Nukazuka39, E. O'Brien3, G. Odyniec20, S. Oh20, V. A. Okorokov31, A. C. Oliveira~da~Silva17, J. D. Osborn3, G. J. Ottino20, Y. C. Ou32, J. Ouellette7, D. Padrazo, Jr.3, T. Pani42, J. Park7, A. Patton25, H. Pereira Da Costa23, D. V. Perepelitsa7, M. Peters25, S. Ping12, C. Pinkenburg3, R. Pisani3, C. Platte47, C. Pontieri3, T. Protzman22, M. L. Purschke3, J. Putschke48, R. J. Reed22, L. Reeves15, S. Regmi35, E. Renner23, D. Richford2,51, C. Riedl15, T. Rinn23, C. Roland25, G. Roland25, A. Romero Hernandez15, M. Rosati17, D. Roy42, A. Saed22, T. Sakaguchi3, H. Sako18, S. Salur42, J. Sandhu22, M. Sarsour13, S. Sato18, B. Sayki23, B. Schaefer22, J. Schambach34, R. Seidl39, B. D. Seidlitz8, Y. Sekiguchi39, M. Shahid13, D. M. Shangase26, Z. Shi23, C. W. Shih30, K. Shiina41, M. Shimomura29, R. Shishikura41, E. Shulga43, A. Sickles15, D. Silvermyr24, R. A. Soltz21, W. Sondheim23, I. Sourikova3, P. Steinberg3, D. Stewart48, S. Stoll3, Y. Sugiyama29, O. Suranyi2, W.-C. Tang30, S. Tarafdar47, E. Thorsland15, T. Todoroki40, L. S. Tsai32, H. Tsujibata29, M. Tsuruta41, J. Tutterow13, E. Tuttle22, B. Ujvari9, E. N. Umaka3, M. Vandenbroucke6, J. Vasquez3, J. Velkovska47, V. Verkest48, A. Vijayakumar15, X. Wang15, Y. Wang5, Z. Wang2, I. S. Ward22, M. Watanabe29, J. Webb3, A. Wehe15, A. Wils6, V. Wolfe22, C. Woody3, W. Xie37, Y. Yamaguchi40, Z. Ye20, K. Yip3, Z. You44, G. Young3, C.-J. Yu16, X. Yu12, X. Yu36, W. A. Zajc8, V. Zakharov43, J. Zhang12, and C. Zimmerli22 (sPHENIX Collaboration)

    Phys. Rev. C 112, 024908 – Published 21 August, 2025

    DOI: https://doi.org/10.1103/h8d5-swg6

    Abstract

    This paper reports measurements of the transverse energy per unit pseudorapidity (dET/dη) produced in Au+Au collisions at sNN=200GeV, performed with the sPHENIX detector at the Relativistic Heavy Ion Collider (RHIC). The results cover the pseudorapidity range |η|<1.1 and constitute the first such measurement performed using a hadronic calorimeter at RHIC. Measurements of dET/dη are presented for a range of centrality intervals and the average dET/dη as a function of the number of participating nucleons, Npart, is compared to a variety of Monte Carlo heavy-ion event generators. The results are in agreement with previous measurements at RHIC, and feature an improved granularity in η and improved precision in low-Npart events.

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