/ nucl-ex arXiv:1601.01999


Beam Energy Dependence of the Third Harmonic of Azimuthal Correlations in Au+Au Collisions at RHIC


Adamczyk, L. (AGH-UST, Cracow) ; Adkins, J.K. (Kentucky U.) ; Agakishiev, G. (Dubna, JINR) ; Aggarwal, M.M. (Panjab U.) ; Ahammed, Z. (Calcutta, VECC) ; Alekseev, I. (Moscow, ITEP) ; Aparin, A. (Dubna, JINR) ; Arkhipkin, D. (Brookhaven) ; Aschenauer, E.C. (Brookhaven) ; Attri, A. (Panjab U.) ; Averichev, G.S. (Dubna, JINR) ; Bai, X. (Hua-Zhong Normal U.) ; Bairathi, V. (Bhubaneswar, NISER) ; Bellwied, R. (Houston U.) ; Bhasin, A. (Jammu U.) ; Bhati, A.K. (Panjab U.) ; Bhattarai, P. (Texas U.) ; Bielcik, J. (Prague, Tech. U.) ; Bielcikova, J. (Rez, Nucl. Phys. Inst.) ; Bland, L.C. (Brookhaven) ; Bordyuzhin, I.G. (Moscow, ITEP) ; Bouchet, J. (Kent State U.) ; Brandenburg, J.D. (Rice U.) ; Brandin, A.V. (Moscow Phys. Eng. Inst.) ; Bunzarov, I. (Dubna, JINR) ; Butterworth, J. (Rice U.) ; Caines, H. (Yale U.) ; Calderon de la Barca Sanchez, M. (UC, Davis) ; Campbell, J.M. (Ohio State U.) ; Cebra, D. (UC, Davis) ; Chakaberia, I. (Brookhaven) ; Chaloupka, P. (Prague, Tech. U.) ; Chang, Z. (Texas A-M) ; Chatterjee, A. (Calcutta, VECC) ; Chattopadhyay, S. (Calcutta, VECC) ; Chen, J.H. (SINAP, Shanghai) ; Chen, X. (Lanzhou, Inst. Modern Phys.) ; Cheng, J. (Tsinghua U., Beijing) ; Cherney, M. (Creighton U.) ; Christie, W. (Brookhaven) ; Contin, G. (LBL, Berkeley) ; Crawford, H.J. (UC, Berkeley) ; Das, S. (Bhubaneswar, Inst. Phys.) ; De Silva, L.C. (Creighton U.) ; Debbe, R.R. (Brookhaven) ; Dedovich, T.G. (Dubna, JINR) ; Deng, J. (Shandong U.) ; Derevschikov, A.A. (Serpukhov, IHEP) ; di Ruzza, B. (Brookhaven) ; Didenko, L. (Brookhaven) ; Dilks, C. (Penn State U.) ; Dong, X. (LBL, Berkeley) ; Drachenberg, J.L. (Valparaiso U., Indiana) ; Draper, J.E. (UC, Davis) ; Du, C.M. (Lanzhou, Inst. Modern Phys.) ; Dunkelberger, L.E. (UCLA) ; Dunlop, J.C. (Brookhaven) ; Efimov, L.G. (Dubna, JINR) ; Engelage, J. (UC, Berkeley) ; Eppley, G. (Rice U.) ; Esha, R. (UCLA) ; Evdokimov, O. (Illinois U., Chicago) ; Eyser, O. (Brookhaven) ; Fatemi, R. (Kentucky U.) ; Fazio, S. (Brookhaven) ; Federic, P. (Rez, Nucl. Phys. Inst.) ; Fedorisin, J. (Dubna, JINR) ; Feng, Z. (Hua-Zhong Normal U.) ; Filip, P. (Dubna, JINR) ; Fisyak, Y. (Brookhaven) ; Flores, C.E. (UC, Davis) ; Fulek, L. (AGH-UST, Cracow) ; Gagliardi, C.A. (Texas A-M) ; Garand, D. (Purdue U.) ; Geurts, F. (Rice U.) ; Gibson, A. (Valparaiso U., Indiana) ; Girard, M. (Warsaw U. of Tech.) ; Greiner, L. (LBL, Berkeley) ; Grosnick, D. (Valparaiso U., Indiana) ; Gunarathne, D.S. (Temple U.) ; Guo, Y. (Hefei, CUST) ; Gupta, S. (Jammu U.) ; Gupta, A. (Jammu U.) ; Guryn, W. (Brookhaven) ; Hamad, A.I. (Kent State U.) ; Hamed, A. (Texas A-M) ; Haque, R. (Bhubaneswar, NISER) ; Harris, J.W. (Yale U.) ; He, L. (Purdue U.) ; Heppelmann, S. (UC, Davis) ; Heppelmann, S. (Penn State U.) ; Hirsch, A. (Purdue U.) ; Hoffmann, G.W. (Texas U.) ; Horvat, S. (Yale U.) ; Huang, T. (Taiwan, Natl. Cheng Kung U.) ; Huang, X. (Tsinghua U., Beijing) ; Huang, B. (Illinois U., Chicago) ; Huang, H.Z. (UCLA) ; Huck, P. (Hua-Zhong Normal U.) ; Humanic, T.J. (Ohio State U.) ; Igo, G. (UCLA) ; Jacobs, W.W. (Indiana U.) ; Jang, H. (KAIST, Taejon) ; Jentsch, A. (Texas U.) ; Jia, J. (Brookhaven) ; Jiang, K. (Hefei, CUST) ; Judd, E.G. (UC, Berkeley) ; Kabana, S. (Kent State U.) ; Kalinkin, D. (Indiana U.) ; Kang, K. (Tsinghua U., Beijing) ; Kauder, K. (Wayne State U.) ; Ke, H.W. (Brookhaven) ; Keane, D. (Kent State U.) ; Kechechyan, A. (Dubna, JINR) ; Khan, Z.H. (Illinois U., Chicago) ; Kikola, D.P. (Warsaw U. of Tech.) ; Kisel, I. (Frankfurt U., FIAS) ; Kisiel, A. (Warsaw U. of Tech.) ; Kochenda, L. (Moscow Phys. Eng. Inst.) ; Koetke, D.D. (Valparaiso U., Indiana) ; Kosarzewski, L.K. (Warsaw U. of Tech.) ; Kraishan, A.F. (Temple U.) ; Kravtsov, P. (Moscow Phys. Eng. Inst.) ; Krueger, K. (Argonne) ; Kumar, L. (Panjab U.) ; Lamont, M.A.C. (Brookhaven) ; Landgraf, J.M. (Brookhaven) ; Landry, K.D. (UCLA) ; Lauret, J. (Brookhaven) ; Lebedev, A. (Brookhaven) ; Lednicky, R. (Dubna, JINR) ; Lee, J.H. (Brookhaven) ; Li, X. (Temple U.) ; Li, C. (Hefei, CUST) ; Li, X. (Hefei, CUST) ; Li, Y. (Tsinghua U., Beijing) ; Li, W. (SINAP, Shanghai) ; Lin, T. (Indiana U.) ; Lisa, M.A. (Ohio State U.) ; Liu, F. (Hua-Zhong Normal U.) ; Ljubicic, T. (Brookhaven) ; Llope, W.J. (Wayne State U.) ; Lomnitz, M. (Kent State U.) ; Longacre, R.S. (Brookhaven) ; Luo, X. (Hua-Zhong Normal U.) ; Ma, R. (Brookhaven) ; Ma, G.L. (SINAP, Shanghai) ; Ma, Y.G. (SINAP, Shanghai) ; Ma, L. (SINAP, Shanghai) ; Magdy, N. (SUNY, Stony Brook) ; Majka, R. (Yale U.) ; Manion, A. (LBL, Berkeley) ; Margetis, S. (Kent State U.) ; Markert, C. (Texas U.) ; Matis, H.S. (LBL, Berkeley) ; McDonald, D. (Houston U.) ; McKinzie, S. (LBL, Berkeley) ; Meehan, K. (UC, Davis) ; Mei, J.C. (Shandong U.) ; Minaev, N.G. (Serpukhov, IHEP) ; Mioduszewski, S. (Texas A-M) ; Mishra, D. (Bhubaneswar, NISER) ; Mohanty, B. (Bhubaneswar, NISER) ; Mondal, M.M. (Texas A-M) ; Morozov, D.A. (Serpukhov, IHEP) ; Mustafa, M.K. (LBL, Berkeley) ; Nandi, B.K. (Indian Inst. Tech., Mumbai) ; Nasim, Md. (UCLA) ; Nayak, T.K. (Calcutta, VECC) ; Nigmatkulov, G. (Moscow Phys. Eng. Inst.) ; Niida, T. (Wayne State U.) ; Nogach, L.V. (Serpukhov, IHEP) ; Noh, S.Y. (KAIST, Taejon) ; Novak, J. (Michigan State U.) ; Nurushev, S.B. (Serpukhov, IHEP) ; Odyniec, G. (LBL, Berkeley) ; Ogawa, A. (Brookhaven) ; Oh, K. (Pusan Natl. U.) ; Okorokov, V.A. (Moscow Phys. Eng. Inst.) ; Olvitt, D., Jr. (Temple U.) ; Page, B.S. (Brookhaven) ; Pak, R. (Brookhaven) ; Pan, Y.X. (UCLA) ; Pandit, Y. (Illinois U., Chicago) ; Panebratsev, Y. (Dubna, JINR) ; Pawlik, B. (Cracow, INP) ; Pei, H. (Hua-Zhong Normal U.) ; Perkins, C. (UC, Berkeley) ; Pile, P. (Brookhaven) ; Pluta, J. (Warsaw U. of Tech.) ; Poniatowska, K. (Warsaw U. of Tech.) ; Porter, J. (LBL, Berkeley) ; Posik, M. (Temple U.) ; Poskanzer, A.M. (LBL, Berkeley) ; Pruthi, N.K. (Panjab U.) ; Putschke, J. (Wayne State U.) ; Qiu, H. (LBL, Berkeley) ; Quintero, A. (Kent State U.) ; Ramachandran, S. (Kentucky U.) ; Raniwala, S. (Rajasthan U.) ; Raniwala, R. (Rajasthan U.) ; Ray, R.L. (Texas U.) ; Ritter, H.G. (LBL, Berkeley) ; Roberts, J.B. (Rice U.) ; Rogachevskiy, O.V. (Dubna, JINR) ; Romero, J.L. (UC, Davis) ; Ruan, L. (Brookhaven) ; Rusnak, J. (Rez, Nucl. Phys. Inst.) ; Rusnakova, O. (Prague, Tech. U.) ; Sahoo, N.R. (Texas A-M) ; Sahu, P.K. (Bhubaneswar, Inst. Phys.) ; Sakrejda, I. (LBL, Berkeley) ; Salur, S. (LBL, Berkeley) ; Sandweiss, J. (Yale U.) ; Sarkar, A. (Indian Inst. Tech., Mumbai) ; Schambach, J. (Texas U.) ; Scharenberg, R.P. (Purdue U.) ; Schmah, A.M. (LBL, Berkeley) ; Schmidke, W.B. (Brookhaven) ; Schmitz, N. (Munich, Max Planck Inst.) ; Seger, J. (Creighton U.) ; Seyboth, P. (Munich, Max Planck Inst.) ; Shah, N. (SINAP, Shanghai) ; Shahaliev, E. (Dubna, JINR) ; Shanmuganathan, P.V. (Kent State U.) ; Shao, M. (Hefei, CUST) ; Sharma, A. (Jammu U.) ; Sharma, B. (Panjab U.) ; Sharma, M.K. (Jammu U.) ; Shen, W.Q. (SINAP, Shanghai) ; Shi, Z. (LBL, Berkeley) ; Shi, S.S. (Hua-Zhong Normal U.) ; Shou, Q.Y. (SINAP, Shanghai) ; Sichtermann, E.P. (LBL, Berkeley) ; Sikora, R. (AGH-UST, Cracow) ; Simko, M. (Rez, Nucl. Phys. Inst.) ; Singha, S. (Kent State U.) ; Skoby, M.J. (Indiana U.) ; Smirnov, N. (Yale U.) ; Smirnov, D. (Brookhaven) ; Solyst, W. (Indiana U.) ; Song, L. (Houston U.) ; Sorensen, P. (Brookhaven) ; Spinka, H.M. (Argonne) ; Srivastava, B. (Purdue U.) ; Stanislaus, T.D.S. (Valparaiso U., Indiana) ; Stepanov, M. (Purdue U.) ; Stock, R. (Frankfurt U., FIAS) ; Strikhanov, M. (Moscow Phys. Eng. Inst.) ; Stringfellow, B. (Purdue U.) ; Sumbera, M. (Rez, Nucl. Phys. Inst.) ; Summa, B. (Penn State U.) ; Sun, Z. (Lanzhou, Inst. Modern Phys.) ; Sun, X.M. (Hua-Zhong Normal U.) ; Sun, Y. (Hefei, CUST) ; Surrow, B. (Temple U.) ; Svirida, D.N. (Moscow, ITEP) ; Tang, Z. (Hefei, CUST) ; Tang, A.H. (Brookhaven) ; Tarnowsky, T. (Michigan State U.) ; Tawfik, A. (WLCAPP, Cairo) ; Thader, J. (LBL, Berkeley) ; Thomas, J.H. (LBL, Berkeley) ; Timmins, A.R. (Houston U.) ; Tlusty, D. (Rice U.) ; Todoroki, T. (Brookhaven) ; Tokarev, M. (Dubna, JINR) ; Trentalange, S. (UCLA) ; Tribble, R.E. (Texas A-M) ; Tribedy, P. (Brookhaven) ; Tripathy, S.K. (Bhubaneswar, Inst. Phys.) ; Tsai, O.D. (UCLA) ; Ullrich, T. (Brookhaven) ; Underwood, D.G. (Argonne) ; Upsal, I. (Ohio State U.) ; Van Buren, G. (Brookhaven) ; van Nieuwenhuizen, G. (Brookhaven) ; Vandenbroucke, M. (Temple U.) ; Varma, R. (Indian Inst. Tech., Mumbai) ; Vasiliev, A.N. (Serpukhov, IHEP) ; Vertesi, R. (Rez, Nucl. Phys. Inst.) ; Videbaek, F. (Brookhaven) ; Vokal, S. (Dubna, JINR) ; Voloshin, S.A. (Wayne State U.) ; Vossen, A. (Indiana U.) ; Wang, F. (Purdue U.) ; Wang, G. (UCLA) ; Wang, J.S. (Lanzhou, Inst. Modern Phys.) ; Wang, H. (Brookhaven) ; Wang, Y. (Hua-Zhong Normal U.) ; Wang, Y. (Tsinghua U., Beijing) ; Webb, G. (Brookhaven) ; Webb, J.C. (Brookhaven) ; Wen, L. (UCLA) ; Westfall, G.D. (Michigan State U.) ; Wieman, H. (LBL, Berkeley) ; Wissink, S.W. (Indiana U.) ; Witt, R. (Naval Academy, Annapolis) ; Wu, Y. (Kent State U.) ; Xiao, Z.G. (Tsinghua U., Beijing) ; Xie, W. (Purdue U.) ; Xie, G. (Hefei, CUST) ; Xin, K. (Rice U.) ; Xu, Y.F. (SINAP, Shanghai) ; Xu, Q.H. (Shandong U.) ; Xu, N. (LBL, Berkeley) ; Xu, H. (Lanzhou, Inst. Modern Phys.) ; Xu, Z. (Brookhaven) ; Xu, J. (Hua-Zhong Normal U.) ; Yang, S. (Hefei, CUST) ; Yang, Y. (Taiwan, Natl. Cheng Kung U.) ; Yang, Y. (Hua-Zhong Normal U.) ; Yang, C. (Hefei, CUST) ; Yang, Y. (Lanzhou, Inst. Modern Phys.) ; Yang, Q. (Hefei, CUST) ; Ye, Z. (Illinois U., Chicago) ; Yepes, P. (Rice U.) ; Yi, L. (Yale U.) ; Yip, K. (Brookhaven) ; Yoo, I.K. (Pusan Natl. U.) ; Yu, N. (Hua-Zhong Normal U.) ; Zbroszczyk, H. (Warsaw U. of Tech.) ; Zha, W. (Hefei, CUST) ; Zhang, X.P. (Tsinghua U., Beijing) ; Zhang, Y. (Hefei, CUST) ; Zhang, J. (Shandong U.) ; Zhang, J. (Lanzhou, Inst. Modern Phys.) ; Zhang, S. (SINAP, Shanghai) ; Zhang, S. (Hefei, CUST) ; Zhang, Z. (SINAP, Shanghai) ; Zhang, J.B. (Hua-Zhong Normal U.) ; Zhao, J. (Purdue U.) ; Zhong, C. (SINAP, Shanghai) ; Zhou, L. (Hefei, CUST) ; Zhu, X. (Tsinghua U., Beijing) ; Zoulkarneeva, Y. (Dubna, JINR) ; Zyzak, M. (Frankfurt U., FIAS)

Pages: 7

Abstract: We present results from a harmonic decomposition of two-particle azimuthal correlations measured with the STAR detector in Au+Au collisions for energies ranging from $\sqrt{s_{NN}}=7.7$ GeV to 200 GeV. The third harmonic $v_3^2\{2\}=\langle \cos3(\phi_1-\phi_2)\rangle$, where $\phi_1-\phi_2$ is the angular difference in azimuth, is studied as a function of the pseudorapidity difference between particle pairs $\Delta\eta = \eta_1-\eta_2$. Non-zero {\vthree} is directly related to the previously observed large-$\Delta\eta$ narrow-$\Delta\phi$ ridge correlations and has been shown in models to be sensitive to the existence of a low viscosity Quark Gluon Plasma (QGP) phase. For sufficiently central collisions, $v_3^2\{2\}$ persist down to an energy of 7.7 GeV suggesting that QGP may be created even in these low energy collisions. In peripheral collisions at these low energies however, $v_3^2\{2\}$ is consistent with zero. When scaled by pseudorapidity density of charged particle multiplicity per participating nucleon pair, $v_3^2\{2\}$ for central collisions shows a minimum near {\snn}$=20$ GeV.

Web-Page: http://inspirehep.net/record/1414638/files/v3edep_a.png; http://inspirehep.net/record/1414638/files/v3edep_ratio_new.png; http://inspirehep.net/record/1414638/files/v3cent_ampt.png; http://inspirehep.net/record/1414638/files/deta_array_urqmd.png; http://inspirehep.net/record/1414638/files/arXiv:1601.01999.pdf


Note: *Brief entry*; *Temporary entry*; 7 pages, 4 figures, for submission to Phys. Rev. Lett

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