Measurement of elliptic flow of light nuclei at sNN=200 , 62.4, 39, 27, 19.6, 11.5, and 7.7 GeV at the BNL Relativistic Heavy Ion Collider

We present measurements of second-order azimuthal anisotropy (v2) at midrapidity (|y| < 1.0) for light nuclei d,t,3He (for sNN=200, 62.4, 39, 27, 19.6, 11.5, and 7.7 GeV) and antinuclei $ \overline{d}\ $; (sNN=200, 62.4, 39, 27, and 19.6 GeV) and 3H$ \overline{e}\ $(sNN=200 GeV) in the STAR (Sole...

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Veröffentlicht in:	Physical review. C 2016-09, Vol.94 (3)
Hauptverfasser:	Agakishiev, G., Aggarwal, M. M., Ahammed, Z., Averichev, G. S., Bhati, A. K., Brandin, A. V., Bunzarov, I., Campbell, J. M., Chattopadhyay, S., Contin, G., Das, S., Derevschikov, A. A., Dunlop, J. C., Engelage, J., Esha, R., Eyser, O., Fedorisin, J., Fisyak, Y., Flores, C. E., Fulek, L., Gupta, S., Hamad, A. I., Harris, J. W., Horvat, S., Huang, B., Humanic, T. J., Jacobs, W. W., Jang, H., Jia, J., Judd, E. G., Kauder, K., Keane, D., Khan, Z. H., Kisiel, A., Kosarzewski, L. K., Lamont, M. A. C., Lednicky, R., Li, W., Lisa, M. A., Ljubicic, T., Llope, W. J., Margetis, S., McDonald, D., Nandi, B. K., Nasim, Md, Nayak, T. K., Niida, T., Novak, J., Nurushev, S. B., Okorokov, V. A., Page, B. S., Pile, P., Pluta, J., Poniatowska, K., Posik, M., Poskanzer, A. M., Quintero, A., Raniwala, S., Ray, R. L., Roberts, J. B., Rogachevskiy, O. V., Romero, J. L., Ruan, L., Sahoo, N. R., Sakrejda, I., Sarkar, A., Seger, J., Seyboth, P., Sharma, B., Shou, Q. Y., Smirnov, D., Song, L., Spinka, H. M., Srivastava, B., Strikhanov, M., Sun, X. M., Sun, Y., Tang, Z., Tawfik, A., Thäder, J., Timmins, A. R., Tsai, O. D., Vandenbroucke, M., Vasiliev, A. N., Vertesi, R., Vokal, S., Voloshin, S. A., Wang, Y., Wen, L., Witt, R., Xu, Y. F., Xu, N., Yang, Q., Ye, Z., Yu, N., Zhang, J., Zhang, S., Zhong, C., Zhu, X., Zoulkarneeva, Y.
Format:	Artikel
Sprache:	eng
Schlagworte:	NUCLEAR PHYSICS AND RADIATION PHYSICS
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Zusammenfassung:	We present measurements of second-order azimuthal anisotropy (v2) at midrapidity (\|y\| < 1.0) for light nuclei d,t,3He (for sNN=200, 62.4, 39, 27, 19.6, 11.5, and 7.7 GeV) and antinuclei $ \overline{d}\ $; (sNN=200, 62.4, 39, 27, and 19.6 GeV) and 3H$ \overline{e}\ $(sNN=200 GeV) in the STAR (Solenoidal Tracker at RHIC) experiment. The v2 for these light nuclei produced in heavy-ion collisions is compared with those for p and $ \overline{p}\ $. We observe mass ordering in nuclei v2(pT) at low transverse momenta (pT < 2.0 GeV/c). We also find a centrality dependence of v2 for d and $ \overline{d}\ $. The magnitude of v2 for t and 3He agree within statistical errors. Light-nuclei v2 are compared with predictions from a blast-wave model. Atomic mass number (A) scaling of light-nuclei v2(pT) seems to hold for pT/A < 1.5GeV/c. Results on light-nuclei v2 from a transport-plus-coalescence model are consistent with the experimental measurements.
ISSN:	2469-9985 2469-9993
DOI:	10.1103/PhysRevC.94.034908