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Adam, J, Adamczyk, L, Adams, JR, Adkins, JK, Agakishiev, G, Aggarwal, MM, Ahammed, Z, Ajitanand, NN, Alekseev, I, Anderson, DM et al (show 333 more authors) , Aoyama, R, Aparin, A, Arkhipkin, D, Aschenauer, EC, Ashraf, MU, Atetalla, F, Attri, A, Averichev, GS, Bai, X, Bairathi, V, Barish, K, Bassin, AJ, Behera, A, Bellwied, R, Bhasin, A, Bhati, AK, Bielcik, J, Bielcikova, J, Bland, LC, Bordyuzhin, IG, Brandenburg, JD, Brandin, AV, Brown, D, Bryslawskyj, J, Bunzarovi, I, Butterworth, J, Caines, H, Sanchez, M Calderon de la Barca, Campbell, JM, Cebra, D, Chakaberia, I, Chaloupka, P, Chang, F-H, Chang, Z, Chankova-Bunzarova, N, Chatterjee, A, Chattopadhyay, S, Chen, JH, Chen, X, Cheng, J, Cherney, M, Christie, W, Contin, G, Crawford, HJ, Das, S, Dedovich, TG, Deppner, IM, Derevschikov, AA, Didenko, L, Dilks, C, Dong, X, Drachenberg, JL, Dunlop, JC, Efimov, LG, Elsey, N, Engelage, J, Eppley, G, Esha, R, Esumi, S, Evdokimov, O, Ewigleben, J, Eyser, O, Fatemi, R, Fazio, S, Federic, P, Federicova, P, Fedorisin, J, Filip, P, Finch, E, Fisyak, Y, Flores, CE, Fulek, L, Gagliardi, CA, Galatyuk, T, Geurts, F, Gibson, A, Grosnick, D, Gunarathne, DS, Guo, Y, Guptai, A, Guryn, W, Hamad, AI, Hamed, A, Harlenderova, A, Harris, JW, He, L, Heppelmann, S, Herrmann, N, Hirsch, A, Holub, L, Horvat, S, Huang, X, Huang, B, Huang, SL, Huang, HZ, Huang, T, Humanic, TJ, Huo, P, Igo, G, Jacobs, WW, Jentsch, A, Jia, J, Jiang, K, Jowzaee, S, Judd, EG, Kabana, S, Kalinkin, D, Kang, K, Kapukchyan, D, Kauder, K, Ke, HW, Keane, D, Kechechyan, A, Kikola, DP, Kim, C, Kinghorn, TA, Kise, I, Kisiel, A, Kochenda, L, Kosarzewski, LK, Kraishan, AF, Kramarik, L, Krauth, L, Kravtsov, R, Krueger, K, Kulathunga, N, Kumar, S, Kumar, L, Kvapil, J, Kwasizur, JH, Lacey, R, Landgraf, JM, Lauret, J, Lebedev, A, Lednicky, R, Lee, JH, Li, X, Li, C, Li, W, Li, Y, Liang, Y, Lidrych, J, Lin, T, Lipiec, A, Lisa, MA, Liu, E, Liu, P, Liu, H, Liu, Y, Ljubicic, T, Llope, WJ, Lomnitz, M, Longacre, RS, Luo, X, Luo, S, Ma, GL, Ma, YG, Ma, L, Ma, R, Magdy, N, Majka, R, Mallick, D, Margetis, S, Markert, C, Matis, HS, Matonoha, O, Mayes, D, Mazer, JA, Meehan, K, Mei, JC, Minaev, NG, Mioduszewski, S, Mishra, D, Mohanty, B, Mondal, MM, Mooney, I, Morozov, DA, Nasim, Md, Negrete, JD, Nelson, JM, Nemes, DB, Nie, M, Nigmatkulov, G, Niida, T, Nogach, LV, Nonaka, T, Nurushev, SB, Odyniec, G, Ogawa, A, Oh, K, Oh, S, Okorokov, VA, Olvitt, D Jr, Page, BS, Pak, R, Panebratsev, Y, Pawlik, B, Pei, H, Perkins, C, Pluta, J, Porter, J, Posik, M, Pruthi, NK, Przybycien, M, Putschke, J, Quintero, A, Radhakrishnan, SK, Ramachandran, S, Ray, RL, Reed, R, Ritter, HG, Roberts, JB, Rogachevskiy, OV, Romero, JL, Ruan, L, Rusnak, J, Rusnakova, O, Sahoo, NR, Sahu, PK, Salur, S, Sandweiss, J, Schambach, J, Schmah, AM, Schmidke, WB, Schmitz, N, Schweid, BR, Seck, F, Seger, J, Sergeeva, M, Seto, R, Seyboth, P, Shah, N, Shahaliev, E, Shanmuganathan, PV, Shao, M, Shen, WQ, Shen, F, Shi, SS, Shou, QY, Sichtermann, EP, Siejka, S, Sikora, R, Simko, M, Singha, S, Smirnov, N, Smirnov, D, Solyst, W, Sorensen, P, Spinka, HM, Srivastava, B, Stanislaus, TDS, Stewart, DJ, Strikhanov, M, Stringfellow, B, Suaide, AAP, Sugiura, T, Sumbera, M, Summa, B, Sun, Y, Sun, X, Sun, XM, Surrow, B, Svirida, DN, Szymanski, P, Tang, Z, Tang, AH, Taranenko, A, Tarnowsky, T, Thomas, JH, Timmins, AR, Tlusty, D, Todoroki, T, Tokarev, M, Tomkie, CA, Trentalange, S, Tribble, RE, Tribedy, P, Tripathy, SK, Tsai, OD, Tu, B, Ullrich, T, Underwood, DG, Upsal, I, Van Buren, G, Vanek, J, Vasiliev, AN, Vassiliev, I, Videbaek, F, Vokal, S, Voloshin, SA, Vossen, A, Wang, G, Wang, Y, Wang, F, Webb, JC, Wen, L, Westfal, GD, Wieman, H, Wissink, SW, Witt, R, Wu, Y, Xiao, ZG, Xie, G, Xie, W, Xu, QH, Xu, Z, Xu, J, Xu, YF, Xu, N, Yang, S, Yang, C, Yang, Q, Yang, Y, Ye, Z, Yi, L, Yip, K, Yoo, I-K, Yu, N, Zbroszczyk, H, Zha, W, Zhang, Z, Zhang, L, Zhang, Y, Zhang, XP, Zhang, J, Zhang, S, Zhao, J, Zhong, C, Zhou, C, Zhou, L, Zhu, Z, Zhu, X and Zyzak, M
(2018)
Global polarization of Lambda hyperons in Au plus Au collisions at root s(NN)=200 GeV.
PHYSICAL REVIEW C, 98 (1).
014910-.
Abstract
Global polarization of $\Lambda$ hyperons has been measured to be of the
order of a few tenths of a percent in Au+Au collisions at $\sqrt{s_{_{NN}}}$ =
200 GeV, with no significant difference between $\Lambda$ and $\bar{\Lambda}$.
These new results reveal the collision energy dependence of the global
polarization together with the results previously observed at
$\sqrt{s_{_{NN}}}$ = 7.7 -- 62.4 GeV and indicate noticeable vorticity of the
medium created in non-central heavy-ion collisions at the highest RHIC
collision energy. The signal is in rough quantitative agreement with the
theoretical predictions from a hydrodynamic model and from the AMPT (A
Multi-Phase Transport) model. The polarization is larger in more peripheral
collisions, and depends weakly on the hyperon's transverse momentum and
pseudorapidity $\eta^H$ within $|\eta^H|<1$. An indication of the polarization
dependence on the event-by-event charge asymmetry is observed at the $2\sigma$
level, suggesting a possible contribution to the polarization from the axial
current induced by the initial magnetic field.
Dimensions
Dimensions
