Accès ouvert déclaré
2025
preprint
Measurement of charged hadron multiplicity in Au+Au collisions at $\sqrt{\text{s}_{\text{NN}}} = 200$ GeV with the sPHENIX detector
SLD Collaboration, M. I. Abdulhamid, U. Acharya, Emily R. Adams, G. Adawi, C. Aidala, Y. Akiba, M. Alfred, S. Ali, A. Alsayegh, S. Altaf, H. Amedi, D. M. Anderson, V. Andrieux, A. Angerami, N. Applegate, H. Aso, S. Aune, B. Azmoun, V. R. Bailey, D. Baranyai, S. Bathe, A. Bazilevsky, S. Bela, R. Belmont, J. Bennett, J. C. Bernauer, Jean‐Loup Bertaux, R. Bi, A. Bonenfant, S. Boose, Christoph H. Borchers, Hannah Bossi, R. Botsford, Rachel Boucher, Anupam Brahma, J. W. Bryan, D. Cacace, I. Cali, M. Chamizo Llatas, Shikha Baghel Chauhan, A. Chen, D. Chen, J. Chen, K. Chen, K. Y. Chen, K. Y. Cheng, C. -Y. Chi, M. Chiu, J. Clement, E. W. Cline, M. Connors, E.G. Cook, R. Corliss, Y. Corrales Morales, Elizabeth A. Croft, N. d’Hose, Ajay Kumar Dabas, D. Dacosta, M. Daradkeh, S. J. Das, A. P. Dash, G. David, C. T. Dean, K. Dehmelt, X. Dong, A. Drees, J. M. Durham, A. Enokizono, H. En’yo, J. Escobar Cepero, R. Esha, B. Fadem, R. Feder, K. Finnelli, D. Firak, A. Francisco, J. Frantz, A. Frawley, K. Fujiki, M. Fujiwara, B. Garcia, P. Garg, G. P. Garmire, Emily C. Gentry, Y. Go, C. Goblin, W. Goodman, Y. Goto, A. Grabas, O. Grachov, J. Granato, N. Grau, S. V. Greene, S. K. Grossberndt, R. Guidolini-Cecato, T. Hachiya, J. S. Haggerty, R. Hamilton, James Hammond, D. A. Hangal, S. Hasegawa, M. Hata, Wei He, Xin He, T. Hemmick, A. Hodges, M. Hoffmann, A. Holt, B. Hong, Mason Ray Housenga, Steve B. Howell, Y. Hu, H. Z. Huang, J. Huang, T. C. Huang, D. A. Huffman, Charles Hughes, Jai-chan Hwang, Takatoshi Ichino, Mitsushi Ikemoto, David K. Imagawa, H. Imai, D. Jah, John V. James, H. -R. Jheng, Y. Ji, Z. Ji, H. Jiang, Motonari Kano, L. Kasper, Toshiyuki Kato, Y. Kawashima, Muhammad Salman Khan, T. Kikuchi, J. Kim, B. Kimelman, H. T. Klest, A. G. Knospe, Morgan Bailey Knuesel, H. S. Ko, J. Kuczewski, L. Kumar, R. Kunnawalkam Elayavalli, C. M. Kuo, J. Kvapil, Y. Kwon, J. G. Lajoie, Jochen Lang, A. Lebedev, S. H. Lee, L. Legnosky, S. Li, X. Li, Tao Lian, S. Liechty, S. H. Lim, D. A. Lis, M. X. Liu, W. J. Llope, D.A Loomis, R. -S. Lu, Lizhen Ma, Wei Ma, V. Mahaut, T. Majoros, I. Mandjavidze, E. Mannel, C. Markert, T. Marshall, C. Martin, H. Masuda, G. Mattson, M. Mazeikis, Chris McGinn, Emma McLaughlin, J. Mead, Yuan Mei, T. Mengel, M. Meskowitz, J. Mills, A. Milov, C. Mironov, G. Mitsuka, N.I. Morimoto, D. Morrison, L. W. Mwibanda, C. Naim, J. L. Nagle, I. Nakagawa, Yuya Nakamura, G. H. Nakano, A. Narde, C. E. Nattrass, D. Neff, S. Nelson, Daiki Nemoto, P. A. Nieto-Marín, R. Nouicer, G. Nukazuka, E. O'Brien, G. Odyniec, S. Oh, V. A. Okorokov, A. C. Oliveira da Silva, J. D. Osborn, G. J. Ottino, Yen‐Chuan Ou, J. Ouellette, D. Padrazo, T. Pani, Joong Shin Park, A. Patton, H. Pereira Da Costa, D. V. Perepelitsa, M. Peters, C. Pinkenburg, R. Pisani, C. Platte, C. Pontieri, T. Protzman, M. L. Purschke, J. Putschke, R. J. Reed, Lily Reeves, E. Renner, D. Richford, C. Riedl, T. Rinn, C. Roland, G. Roland, Annabel Romero Hernandez, M. Rosati, D. Roy, A. Saed, T. Sakaguchi, H. Sako, S. Salur, Jaswinder S. Sandhu, M. Sarsour, S. Sato, B. Sayki, B. Schaefer, J. Schambach, R. Seidl, B. D. Seidlitz, Y. Sekiguchi, Mohammad Shahid, D. M. Shangase, Z. Shi, C. W. Shih, K. Shiina, M. Shimomura, R. Shishikura, E. Shulga, A. Sickles, D. Silvermyr, R. A. Soltz, W. Sondheim, I. Sourikova, P. Steinberg, D. Stewart, S. P. Stoll, Y. Sugiyama, O. Surányi, W. -C. Tang, S. Tarafdar, E. Thorsland, T. Todoroki, L. s. Tsai, H. Tsujibata, M. Tsuruta, J. Tutterow, E. Tuttle, B. Ujvari, E. N. Umaka, M. Vandenbroucke, J. Vasquez, J. Velkovska, V. Verkest, A Vijayakumar, X. Wang, Y. Wang, Z. Wang, I. S. Ward, M. Watanabe, J. C. Webb, A. Wehe, A. Wils, Valerie M. Wolfe, C. L. Woody, W. Xie, Y. Yamaguchi, Z. Ye, L. Yi, Z. You, Gil Young, C. Yu, Yu Xia, W. A. Zajc, V. Zakharov, J. Zhang, C. Zimmerli
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Le résumé fourni par la source
The pseudorapidity distribution of charged hadrons produced in Au+Au collisions at a center-of-mass energy of $\sqrt{s_\mathrm{NN}} = 200$ GeV is measured using data collected by the sPHENIX detector. Charged hadron yields are extracted by counting cluster pairs in the inner and outer layers of the Intermediate Silicon Tracker, with corrections applied for detector acceptance, reconstruction efficiency, combinatorial pairs, and contributions from secondary decays. The measured distributions cover $|η| < 1.1$ across various centralities, and the average pseudorapidity density of charged hadrons at mid-rapidity is compared to predictions from Monte Carlo heavy-ion event generators. This result, featuring full azimuthal coverage at mid-rapidity, is consistent with previous experimental measurements at the Relativistic Heavy Ion Collider, thereby supporting the broader sPHENIX physics program.
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Les sujets associés
High-Energy Particle Collisions ResearchParticle physics theoretical and experimental studiesQuantum Chromodynamics and Particle Interactions