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Collaboration, STAR, Adamczyk, L, Adkins, JK, Agakishiev, G, Aggarwal, MM, Ahammed, Z, Alekseev, I, Aparin, A, Arkhipkin, D, Aschenauer, EC et al (show 330 more authors) , Ashraf, MU, Attri, A, Averichev, GS, Bai, X, Bairathi, V, Bellwied, R, Bhasin, A, Bhati, AK, Bhattarai, P, Bielcik, J, Bielcikova, J, Bland, LC, Bordyuzhin, IG, Bouchet, J, Brandenburg, JD, Brandin, AV, Bunzarov, I, Butterworth, J, Caines, H, Sánchez, M Calderón de la Barca, Campbell, JM, Cebra, D, Chakaberia, I, Chaloupka, P, Chang, Z, Chatterjee, A, Chattopadhyay, S, Chen, X, Chen, JH, Cheng, J, Cherney, M, Christie, W, Contin, G, Crawford, HJ, Das, S, Silva, LC De, Debbe, RR, Dedovich, TG, Deng, J, Derevschikov, AA, Ruzza, B di, Didenko, L, Dilks, C, Dong, X, Drachenberg, JL, Draper, JE, Du, CM, Dunkelberger, LE, Dunlop, JC, Efimov, LG, Engelage, J, Eppley, G, Esha, R, Evdokimov, O, Eyser, O, Fatemi, R, Fazio, S, Federic, P, Fedorisin, J, Feng, Z, Filip, P, Fisyak, Y, Flores, CE, Fulek, L, Gagliardi, CA, Garand, D, Geurts, F, Gibson, A, Girard, M, Greiner, L, Grosnick, D, Gunarathne, DS, Guo, Y, Gupta, S, Gupta, A, Guryn, W, Hamad, AI, Hamed, A, Haque, R, Harris, JW, He, L, Heppelmann, S, Heppelmann, S, Hirsch, A, Hoffmann, GW, Horvat, S, Huang, T, Huang, HZ, Huang, X, Huang, B, Huck, P, Humanic, TJ, Igo, G, Jacobs, WW, Jang, H, Jentsch, A, Jia, J, Jiang, K, Judd, EG, Kabana, S, Kalinkin, D, Kang, K, Kauder, K, Ke, HW, Keane, D, Kechechyan, A, Khan, ZH, Kikoła, DP, Kisel, I, Kisiel, A, Kochenda, L, Koetke, DD, Kosarzewski, LK, Kraishan, AF, Kravtsov, P, Krueger, K, Kumar, L, Lamont, MAC, Landgraf, JM, Landry, KD, Lauret, J, Lebedev, A, Lednicky, R, Lee, JH, Li, W, Li, X, Li, X, Li, C, Li, Y, Lin, T, Lisa, MA, Liu, F, Ljubicic, T, Llope, WJ, Lomnitz, M, Longacre, RS, Luo, X, Ma, GL, Ma, R, Ma, YG, Ma, L, Magdy, N, Majka, R, Manion, A, Margetis, S, Markert, C, Matis, HS, McDonald, D, McKinzie, S, Meehan, K, Mei, JC, Minaev, NG, Mioduszewski, S, Mishra, D, Mohanty, B, Mondal, MM, Morozov, DA, Mustafa, MK, Nandi, BK, Nasim, Md, Nayak, TK, Nigmatkulov, G, Niida, T, Nogach, LV, Noh, SY, Novak, J, Nurushev, SB, Odyniec, G, Ogawa, A, Oh, K, Okorokov, VA, Jr, D Olvitt, Page, BS, Pak, R, Pan, YX, Pandit, Y, Panebratsev, Y, Pawlik, B, Pei, H, Perkins, C, Pile, P, Pluta, J, Poniatowska, K, Porter, J, Posik, M, Poskanzer, AM, Pruthi, NK, Putschke, J, Qiu, H, Quintero, A, Ramachandran, S, Raniwala, S, Raniwala, R, Ray, RL, Ritter, HG, Roberts, JB, Rogachevskiy, OV, Romero, JL, Ruan, L, Rusnak, J, Rusnakova, O, Sahoo, NR, Sahu, PK, Sakrejda, I, Salur, S, Sandweiss, J, Sarkar, A, Schambach, J, Scharenberg, RP, Schmah, AM, Schmidke, WB, Schmitz, N, Seger, J, Seyboth, P, Shah, N, Shahaliev, E, Shanmuganathan, PV, Shao, M, Sharma, B, Sharma, A, Sharma, MK, Shen, WQ, Shi, Z, Shi, SS, Shou, QY, Sichtermann, EP, Sikora, R, Simko, M, Singha, S, Skoby, MJ, Smirnov, D, Smirnov, N, Solyst, W, Song, L, Sorensen, P, Spinka, HM, Srivastava, B, Stanislaus, TDS, Stepanov, M, Stock, R, Strikhanov, M, Stringfellow, B, Sumbera, M, Summa, B, Sun, Y, Sun, XM, Sun, Z, Surrow, B, Svirida, DN, Tang, Z, Tang, AH, Tarnowsky, T, Tawfik, A, Thäder, J, Thomas, JH, Timmins, AR, Tlusty, D, Todoroki, T, Tokarev, M, Trentalange, S, Tribble, RE, Tribedy, P, Tripathy, SK, Tsai, OD, Ullrich, T, Underwood, DG, Upsal, I, Buren, G Van, Nieuwenhuizen, G van, Vandenbroucke, M, Varma, R, Vasiliev, AN, Vertesi, R, Videbæk, F, Vokal, S, Voloshin, SA, Vossen, A, Wang, H, Wang, JS, Wang, Y, Wang, F, Wang, G, Wang, Y, Webb, G, Webb, JC, Wen, L, Westfall, GD, Wieman, H, Wissink, SW, Witt, R, Wu, Y, Xiao, ZG, Xie, G, Xie, W, Xin, K, Xu, N, Xu, H, Xu, Z, Xu, YF, Xu, J, Xu, QH, Yang, C, Yang, Y, Yang, Y, Yang, S, Yang, Y, Yang, Q, Ye, Z, Ye, Z, Yepes, P, Yi, L, Yip, K, Yoo, I-K, Yu, N, Zbroszczyk, H, Zha, W, Zhang, JB, Zhang, J, Zhang, Z, Zhang, S, Zhang, Y, Zhang, XP, Zhang, J, Zhang, S, Zhao, J, Zhong, C, Zhou, L, Zhu, X, Zoulkarneeva, Y and Zyzak, M
Measurement of elliptic flow of light nuclei at $\sqrt{s_{NN}}$ = 200, 62.4, 39, 27, 19.6, 11.5, and 7.7 GeV at RHIC.
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Abstract
We present measurements of 2$^{nd}$ order azimuthal anisotropy ($v_{2}$) at mid-rapidity $(|y|<1.0)$ for light nuclei d, t, $^{3}$He (for $\sqrt{s_{NN}}$ = 200, 62.4, 39, 27, 19.6, 11.5, and 7.7 GeV) and anti-nuclei $\bar{\rm d}$ ($\sqrt{s_{NN}}$ = 200, 62.4, 39, 27, and 19.6 GeV) and $^{3}\bar{\rm He}$ ($\sqrt{s_{NN}}$ = 200 GeV) in the STAR (Solenoidal Tracker at RHIC) experiment. The $v_{2}$ for these light nuclei produced in heavy-ion collisions is compared with those for p and $\bar{\rm p}$. We observe mass ordering in nuclei $v_{2}(p_{T})$ at low transverse momenta ($p_{T}<2.0$ GeV/$c$). We also find a centrality dependence of $v_{2}$ for d and $\bar{\rm d}$. The magnitude of $v_{2}$ for t and $^{3}$He agree within statistical errors. Light-nuclei $v_{2}$ are compared with predictions from a blast wave model. Atomic mass number ($A$) scaling of light-nuclei $v_{2}(p_{T})$ seems to hold for $p_{T}/A < 1.5$ GeV/$c$. Results on light-nuclei $v_{2}$ from a transport-plus-coalescence model are consistent with the experimental measurements.
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