- Main
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
- Collaboration, STAR;
- Adamczyk, L;
- Adkins, JK;
- Agakishiev, G;
- Aggarwal, MM;
- Ahammed, Z;
- Alekseev, I;
- Aparin, A;
- Arkhipkin, D;
- Aschenauer, EC;
- 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;
- Zyzak, M
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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