Global polarization of Lambda hyperons in Au plus Au collisions at root s(NN)=200 GeV uri icon

abstract

  • 2018 American Physical Society. Global polarization of hyperons has been measured to be of the order of a few tenths of a percentage in Au+Au collisions at sNN = 200 GeV, with no significant difference between and . These new results reveal the collision energy dependence of the global polarization together with the results previously observed at sNN = 7.7-62.4 GeV and indicate noticeable vorticity of the medium created in noncentral heavy-ion collisions at the highest Relativistic Heavy Ion Collider collision energy. The signal is in rough quantitative agreement with the theoretical predictions from a hydrodynamic model and from a multi-phase transport model. The polarization is larger in more peripheral collisions, and depends weakly on the hyperon's transverse momentum and pseudorapidity H within |H|<1. An indication of the polarization dependence on the event-by-event charge asymmetry is observed at the 2 level, suggesting a possible contribution to the polarization from the axial current induced by the initial magnetic field.

published proceedings

  • PHYSICAL REVIEW C

altmetric score

  • 0.5

author list (cited authors)

  • Adam, J., Adamczyk, L., Adams, J. R., Adkins, J. K., Agakishiev, G., Aggarwal, M. M., ... Zyzak, M.

citation count

  • 176

complete list of authors

  • Adam, J||Adamczyk, L||Adams, JR||Adkins, JK||Agakishiev, G||Aggarwal, MM||Ahammed, Z||Ajitanand, NN||Alekseev, I||Anderson, DM||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||Zyzak, M

publication date

  • July 2018