Measurement of the longitudinal flow-plane decorrelation using multiplane cumulants in √sNN=200 GeV Au + Au, Ru + Ru, and Zr + Zr collisions
Measurements of the variation of anisotropic flow-plane angles (Ψ𝑛) with rapidity, commonly known as the flow-plane decorrelation, provide important insights into the initial conditions of the matter produced in heavy-ion collisions. In this paper, using data collected by the STAR experiment, we rep...
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| Auteurs principaux: | , , , , , , |
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| Collectivité auteur: | |
| Format: | Article (Journal) |
| Langue: | anglais |
| Publié: |
17 February, 2026
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| In: |
Physical review
Year: 2026, Volume: 113, Numéro: 2, Pages: 1-13 |
| ISSN: | 2469-9993 |
| DOI: | 10.1103/75tf-ljtk |
| Accès en ligne: | Resolving-System, lizenzpflichtig, Volltext: https://doi.org/10.1103/75tf-ljtk Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/75tf-ljtk 
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| Notes sur l'auteur: | B.E. Aboona, J. Adam, L. Adamczyk, I. Aggarwal, M.M. Aggarwal, Z. Ahammed, A.K. Alshammri, E.C. Aschenauer, S. Aslam, J. Atchison, V. Bairathi, X. Bao, P. Barik, K. Barish, S. Behera, R. Bellwied, P. Bhagat, A. Bhasin, S. Bhatta, S.R. Bhosale, J. Bielcik, J. Bielcikova, J.D. Brandenburg, C. Broodo, X.Z. Cai, H. Caines, M. Calderón de la Barca Sánchez, D. Cebra, J. Ceska, I. Chakaberia, P. Chaloupka, Y.S. Chang, Z. Chang, A. Chatterjee, D. Chen, J.H. Chen, Q. Chen, W. Chen, Z. Chen, J. Cheng, Y. Cheng, W. Christie, X. Chu, S. Corey, H.J. Crawford, M. Csanád, G. Dale-Gau, A. Das, D. De Souza Lemos, I.M. Deppner, A. Deshpande, A. Dhamija, A. Dimri, P. Dixit, X. Dong, J.L. Drachenberg, E. Duckworth, J.C. Dunlop, Y.S. El-Feky, J. Engelage, G. Eppley, S. Esumi, O. Evdokimov, O. Eyser, B. Fan, Y. Fang, R. Fatemi, S. Fazio, H. Feng, Y. Feng, E. Finch, Y. Fisyak, F.A. Flor, C. Fu, T. Fu, C.A. Gagliardi, T. Galatyuk, T. Gao, Y. Gao, G. Garcia, F. Geurts, A. Gibson, A. Giri, K. Gopal, X. Gou, D. Grosnick, A. Gu, J. Gu, A. Gupta, W. Guryn, A. Hamed, R.J. Hamilton, J. Han, X. Han, S. Harabasz, M.D. Harasty, J.W. Harris, H. Harrison-Smith, L.B. Havener, X.H. He, Y. He, N. Herrmann, L. Holub, C. Hu, Q. Hu, Y. Hu, H. Huang, H.Z. Huang, S.L. Huang, T. Huang, Y. Huang, Y. Huang, Y. Huang, M. Isshiki, W.W. Jacobs, A. Jalotra, C. Jena, A. Jentsch, Y. Ji, J. Jia, X. Jiang, C. Jin, Y. Jin, N. Jindal, X. Ju, E.G. Judd, S. Kabana, D. Kalinkin, J. Kang, K. Kang, A.R. Kanuganti, D. Kapukchyan, K. Kauder, D. Keane, M. Kesler, A. Khanal, Y.V. Khyzhniak, D.P. Kikoła, J. Kim, D. Kincses, I. Kisel, A. Kiselev, A.G. Knospe, J. Kołaś, B. Korodi, L.K. Kosarzewski, L. Kumar, M.C. Labonte, R. Lacey, J.M. Landgraf, C. Larson, J. Lauret, A. Lebedev, J.H. Lee, Y.H. Leung, C. Li, D. Li, H-S. Li, H. Li, H. Li, H. Li, W. Li, X. Li, X. Li, Y. Li, Z. Li, Z. Li, X. Liang, R. Licenik, T. Lin, Y. Lin, M.A. Lisa, C. Liu, G. Liu, H. Liu, L. Liu, L. Liu, Z. Liu, Z. Liu, T. Ljubicic, O. Lomicky, E.M. Loyd, T. Lu, J. Luo, X.F. Luo, L. Ma, R. Ma, Y.G. Ma, N. Magdy, D. Mallick, R. Manikandhan, C. Markert, O. Matonoha, K. Mi, S. Mioduszewski, B. Mohanty, B. Mondal, M.M. Mondal, I. Mooney, J. Mrazkova, M.I. Nagy, C.J. Naim, A.S. Nain, J.D. Nam, M. Nasim, H. Nasrulloh, J.M. Nelson, M. Nie, G. Nigmatkulov, T. Niida, T. Nonaka, G. Odyniec, A. Ogawa, S. Oh, K. Okubo, B.S. Page, S. Pal, A. Pandav, A. Panday, A.K. Pandey, T. Pani, A. Paul, S. Paul, D. Pawlowska, C. Perkins, S. Ping, J. Pluta, B.R. Pokhrel, I.D. Ponce Pinto, M. Posik, E. Pottebaum, S. Prodhan, T.L. Protzman, A. Prozorov, V. Prozorova, N.K. Pruthi, M. Przybycien, J. Putschke, Y. Qi, Z. Qin, H. Qiu, C. Racz, S.K. Radhakrishnan, A. Rana, R.L. Ray, R. Reed, C.W. Robertson, M. Robotkova, M.A. Rosales Aguilar, D. Roy, P. Roy Chowdhury, L. Ruan, A.K. Sahoo, N.R. Sahoo, H. Sako, S. Salur, S.S. Sambyal, J.K. Sandhu, S. Sato, B.C. Schaefer, N. Schmitz, F-J. Seck, J. Seger, R. Seto, P. Seyboth, N. Shah, P.V. Shanmuganathan, T. Shao, M. Sharma, N. Sharma, R. Sharma, S.R. Sharma, A.I. Sheikh, D. Shen, D.Y. Shen, K. Shen, S. Shi, Y. Shi, E. Shulga, F. Si, J. Singh, S. Singha, P. Sinha, M.J. Skoby, N. Smirnov, Y. Söhngen, Y. Song, T.D.S. Stanislaus, M. Stefaniak, Y. Su, M. Sumbera, X. Sun, Y. Sun, B. Surrow, M. Svoboda, Z.W. Sweger, A.C. Tamis, A.H. Tang, Z. Tang, T. Tarnowsky, J.H. Thomas, A.R. Timmins, D. Tlusty, D. Torres Valladares, S. Trentalange, P. Tribedy, S.K. Tripathy, T. Truhlar, B.A. Trzeciak, O.D. Tsai, C.Y. Tsang, Z. Tu, J.E. Tyler, T. Ullrich, D.G. Underwood, G. Van Buren, J. Vanek, I. Vassiliev, F. Videbæk, S.A. Voloshin, F. Wang, G. Wang, G. Wang, J.S. Wang, J. Wang, K. Wang, X. Wang, Y. Wang, Y. Wang, Y. Wang, Z. Wang, Z. Wang, Z.Y. Wang, A.J. Watroba, J.C. Webb, P.C. Weidenkaff, G.D. Westfall, D. Wielanek, H. Wieman, G. Wilks, S.W. Wissink, R. Witt, C.P. Wong, J. Wu, X. Wu, X. Wu, X. Wu, B. Xi, Y. Xiao, Z.G. Xiao, G. Xie, W. Xie, H. Xu, N. Xu, Q.H. Xu, X. Xu, Y. Xu, Y. Xu, Y. Xu, Y. Xu, Z. Xu, Z. Xu, G. Yan, Z. Yan, C. Yang, Q. Yang, S. Yang, Y. Yang, Z. Ye, Z. Ye, L. Yi, Y. Yu, W. Yuan, H. Zbroszczyk, W. Zha, C. Zhang, D. Zhang, J. Zhang, L. Zhang, S. Zhang, W. Zhang, X. Zhang, Y. Zhang, Y. Zhang, Y. Zhang, Y. Zhang, Z. Zhang, Z. Zhang, F. Zhao, J. Zhao, S. Zhou, Y. Zhou, X. Zhu, M. Zurek, and M. Zyzak (STAR Collaboration) |
| Résumé: | Measurements of the variation of anisotropic flow-plane angles (Ψ𝑛) with rapidity, commonly known as the flow-plane decorrelation, provide important insights into the initial conditions of the matter produced in heavy-ion collisions. In this paper, using data collected by the STAR experiment, we report the first measurement of the four-plane correlator observable 𝑇𝑛{𝑏𝑎;𝑑𝑐}=⟨⟨sin[𝑛(Ψ𝑏𝑛−Ψ𝑎𝑛)]sin[𝑛(Ψ𝑑𝑛−Ψ𝑐𝑛)]⟩⟩, where superscripts 𝑎, 𝑏, 𝑐, and 𝑑 denote sequential pseudorapidity (𝜂) regions with 𝑎 corresponding to the most backward region, 𝑏 and 𝑐 close to midrapidity with 𝜂𝑏<0 and 𝜂𝑐>0, and 𝑑 being the most forward. The measurement is performed for the elliptic and triangular flow (i.e., 𝑛=2 and 3) in Au + Au and isobar (Ru + Ru, Zr + Zr) collisions at √𝑠NN=200 GeV. The goal of calculating the correlation of the flow-plane angle variations from backward to midcentral, and from midcentral to forward regions, is to probe the systematic variation of flow angle over a wide 𝜂 range. In midcentral collisions (10-30% centrality), we find 𝑇2{𝑏𝑎;𝑑𝑐}=−0.004±0.001(stat)±0.002(syst) independent of the collision system. Such a small value of 𝑇2 favors a “random-walk” variation of the flow-plane angles, where the rapidity correlation length is smaller than the entire region under study. These measurements provide new information on the decorrelation patterns in the system and offer a quantitative estimate of possible systematic variations in anisotropic flow angles such as “twist” between forward and backward regions. This opens new opportunities for understanding the three-dimensional structure and the time evolution of the quark-gluon plasma created in heavy-ion collisions. |
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| Description: | Im Titel steht der Ausdruck sNN unter dem Wurzelsymbol, NN ist dabei tiefgestellt Gesehen am 16.09.2026 |
| Description matérielle: | Online Resource |
| ISSN: | 2469-9993 |
| DOI: | 10.1103/75tf-ljtk |