Global Polarization of and Hyperons in Au+Au Collisions at sqrt[s_{NN}]=200GeV. uri icon

abstract

  • Global polarization of and hyperons has been measured for the first time in Au+Au collisions at sqrt[s_{NN}]=200GeV. The measurements of the ^{-} and [over ]^{+} hyperon polarization have been performed by two independent methods, via analysis of the angular distribution of the daughter particles in the parity violating weak decay +, as well as by measuring the polarization of the daughter hyperon, polarized via polarization transfer from its parent. The polarization, obtained by combining the results from the two methods and averaged over ^{-} and [over ]^{+}, is measured to be P_{}=0.470.10(stat)0.23(syst)% for the collision centrality 20%-80%. The P_{} is found to be slightly larger than the inclusive polarization and in reasonable agreement with a multiphase transport model. The P_{} is found to follow the centrality dependence of the vorticity predicted in the model, increasing toward more peripheral collisions. The global polarization of , P_{}=1.110.87(stat)1.97(syst)% was obtained by measuring the polarization of daughter in the decay +K, assuming the polarization transfer factor C_{}=1.

published proceedings

  • Phys Rev Lett

altmetric score

  • 0.5

author list (cited authors)

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

citation count

  • 34

complete list of authors

  • Adam, J||Adamczyk, L||Adams, JR||Adkins, JK||Agakishiev, G||Aggarwal, MM||Ahammed, Z||Alekseev, I||Anderson, DM||Aparin, A||Aschenauer, EC||Ashraf, MU||Atetalla, FG||Attri, A||Averichev, GS||Bairathi, V||Barish, K||Behera, A||Bellwied, R||Bhasin, A||Bielcik, J||Bielcikova, J||Bland, LC||Bordyuzhin, IG||Brandenburg, JD||Brandin, AV||Butterworth, J||Caines, H||Calderón de la Barca Sánchez, M||Cebra, D||Chakaberia, I||Chaloupka, P||Chan, BK||Chang, F-H||Chang, Z||Chankova-Bunzarova, N||Chatterjee, A||Chen, D||Chen, J||Chen, JH||Chen, X||Chen, Z||Cheng, J||Cherney, M||Chevalier, M||Choudhury, S||Christie, W||Chu, X||Crawford, HJ||Csanád, M||Daugherity, M||Dedovich, TG||Deppner, IM||Derevschikov, AA||Didenko, L||Dong, X||Drachenberg, JL||Dunlop, JC||Edmonds, T||Elsey, N||Engelage, J||Eppley, G||Esumi, S||Evdokimov, O||Ewigleben, A||Eyser, O||Fatemi, R||Fazio, S||Federic, P||Fedorisin, J||Feng, CJ||Feng, Y||Filip, P||Finch, E||Fisyak, Y||Francisco, A||Fulek, L||Gagliardi, CA||Galatyuk, T||Geurts, F||Ghimire, N||Gibson, A||Gopal, K||Gou, X||Grosnick, D||Guryn, W||Hamad, AI||Hamed, A||Harabasz, S||Harris, JW||He, S||He, W||He, XH||He, Y||Heppelmann, S||Heppelmann, S||Herrmann, N||Hoffman, E||Holub, L||Hong, Y||Horvat, S||Hu, Y||Huang, HZ||Huang, SL||Huang, T||Huang, X||Humanic, TJ||Huo, P||Igo, G||Isenhower, D||Jacobs, WW||Jena, C||Jentsch, A||Ji, Y||Jia, J||Jiang, K||Jowzaee, S||Ju, X||Judd, EG||Kabana, S||Kabir, ML||Kagamaster, S||Kalinkin, D||Kang, K||Kapukchyan, D||Kauder, K||Ke, HW||Keane, D||Kechechyan, A||Kelsey, M||Khyzhniak, YV||Kikoła, DP||Kim, C||Kimelman, B||Kincses, D||Kinghorn, TA||Kisel, I||Kiselev, A||Kocan, M||Kochenda, L||Kosarzewski, LK||Kramarik, L||Kravtsov, P||Krueger, K||Kulathunga Mudiyanselage, N||Kumar, L||Kumar, S||Kunnawalkam Elayavalli, R||Kwasizur, JH||Lacey, R||Lan, S||Landgraf, JM||Lauret, J||Lebedev, A||Lednicky, R||Lee, JH||Leung, YH||Li, C||Li, C||Li, W||Li, W||Li, X||Li, Y||Liang, Y||Licenik, R||Lin, T||Lin, Y||Lisa, MA||Liu, F||Liu, H||Liu, P||Liu, P||Liu, T||Liu, X||Liu, Y||Liu, Z||Ljubicic, T||Llope, WJ||Longacre, RS||Lukow, NS||Luo, S||Luo, X||Ma, GL||Ma, L||Ma, R||Ma, YG||Magdy, N||Majka, R||Mallick, D||Margetis, S||Markert, C||Matis, HS||Mazer, JA||Minaev, NG||Mioduszewski, S||Mohanty, B||Mooney, I||Moravcova, Z||Morozov, DA||Nagy, M||Nam, JD||Nasim, Md||Nayak, K||Neff, D||Nelson, JM||Nemes, DB||Nie, M||Nigmatkulov, G||Niida, T||Nogach, LV||Nonaka, T||Nunes, AS||Odyniec, G||Ogawa, A||Oh, S||Okorokov, VA||Page, BS||Pak, R||Pandav, A||Panebratsev, Y||Pawlik, B||Pawlowska, D||Pei, H||Perkins, C||Pinsky, L||Pintér, RL||Pluta, J||Pokhrel, BR||Porter, J||Posik, M||Pruthi, NK||Przybycien, M||Putschke, J||Qiu, H||Quintero, A||Radhakrishnan, SK||Ramachandran, S||Ray, RL||Reed, R||Ritter, HG||Rogachevskiy, OV||Romero, JL||Ruan, L||Rusnak, J||Sahoo, NR||Sako, H||Salur, S||Sandweiss, J||Sato, S||Schmidke, WB||Schmitz, N||Schweid, BR||Seck, F||Seger, J||Sergeeva, M||Seto, R||Seyboth, P||Shah, N||Shahaliev, E||Shanmuganathan, PV||Shao, M||Sheikh, AI||Shen, WQ||Shi, SS||Shi, Y||Shou, QY||Sichtermann, EP||Sikora, R||Simko, M||Singh, J||Singha, S||Smirnov, N||Solyst, W||Sorensen, P||Spinka, HM||Srivastava, B||Stanislaus, TDS||Stefaniak, M||Stewart, DJ||Strikhanov, M||Stringfellow, B||Suaide, AAP||Sumbera, M||Summa, B||Sun, XM||Sun, X||Sun, Y||Sun, Y||Surrow, B||Svirida, DN||Szymanski, P||Tang, AH||Tang, Z||Taranenko, A||Tarnowsky, T||Thomas, JH||Timmins, AR||Tlusty, D||Tokarev, M||Tomkiel, CA||Trentalange, S||Tribble, RE||Tribedy, P||Tripathy, SK||Tsai, OD||Tu, Z||Ullrich, T||Underwood, DG||Upsal, I||Van Buren, G||Vanek, J||Vasiliev, AN||Vassiliev, I||Videbæk, F||Vokal, S||Voloshin, SA||Wang, F||Wang, G||Wang, JS||Wang, P||Wang, Y||Wang, Y||Wang, Z||Webb, JC||Weidenkaff, PC||Wen, L||Westfall, GD||Wieman, H||Wissink, SW||Witt, R||Wu, Y||Xiao, ZG||Xie, G||Xie, W||Xu, H||Xu, N||Xu, QH||Xu, YF||Xu, Y||Xu, Z||Xu, Z||Yang, C||Yang, Q||Yang, S||Yang, Y||Yang, Z||Ye, Z||Ye, Z||Yi, L||Yip, K||Yu, Y||Zbroszczyk, H||Zha, W||Zhang, C||Zhang, D||Zhang, S||Zhang, S||Zhang, XP||Zhang, Y||Zhang, Y||Zhang, ZJ||Zhang, Z||Zhang, Z||Zhao, J||Zhong, C||Zhou, C||Zhu, X||Zhu, Z||Zurek, M||Zyzak, M

publication date

  • April 2021