Event-plane-dependent dihadron correlations with harmonic vn subtraction in Au + Au collisions at s NN =200 GeV
Publication date
2014-04-18
Authors
Agakishiev, H.
Aggarwal, M. M.
Ahammed, Z.
Alakhverdyants, A. V.
Alekseev, I.
Alford, J.
Anderson, B. D.
Anson, C. D.
Arkhipkin, D.
Averichev, G. S.
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Document Type
Article
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Abstract
STAR measurements of dihadron azimuthal correlations (Δφ) are reported in midcentral (20-60%) Au+Au collisions at sNN=200 GeV as a function of the trigger particle's azimuthal angle relative to the event plane, φs=|φt-ψEP|. The elliptic (v2), triangular (v3), and quadratic (v4) flow harmonic backgrounds are subtracted using the zero yield at minimum (ZYAM) method. The results are compared to minimum-bias d+Au collisions. It is found that a finite near-side (|Δφ|<π/2) long-range pseudorapidity correlation (ridge) is present in the in-plane direction (φs∼0). The away-side (|Δφ|>π/2) correlation shows a modification from d+Au data, varying with φs. The modification may be a consequence of path-length-dependent jet quenching and may lead to a better understanding of high-density QCD.
Keywords
Nuclear and High Energy Physics
Citation
Agakishiev, H, Aggarwal, M M, Ahammed, Z, Alakhverdyants, A V, Alekseev, I, Alford, J, Anderson, B D, Anson, C D, Arkhipkin, D, Averichev, G S, Balewski, J, Beavis, D R, Behera, N K, Bellwied, R, Betancourt, M J, Betts, R R, Bhasin, A, Bhati, A K, Bichsel, H, Bielcik, J, Bielcikova, J, Biritz, B, Bland, L C, Borowski, W, Bouchet, J, Braidot, E, Brandin, A V, Bridgeman, A, Brovko, S G, Bruna, E, Bueltmann, S, Bunzarov, I, Burton, T P, Cai, X Z, Caines, H, De La Barca Sánchez, M C, Cebra, D, Cendejas, R, Cervantes, M C, Chajecki, Z, Chaloupka, P, Chattopadhyay, S, Chen, H F, Chen, J H, Chen, J Y, Chen, L, Cheng, J, Cherney, M, Chikanian, A, Choi, K E, Christie, W, Chung, P, Codrington, M J M, Corliss, R, Cramer, J G, Crawford, H J, Dash, S, Leyva, A D, De Silva, L C, Debbe, R R, Dedovich, T G, Derevschikov, A A, De Souza, R D, Didenko, L, Djawotho, P, Dogra, S M, Dong, X, Drachenberg, J L, Draper, J E, Dunlop, J C, Efimov, L G, Elnimr, M, Engelage, J, Eppley, G, Estienne, M, Eun, L, Evdokimov, O, Fatemi, R, Fedorisin, J, Feng, A, Fersch, R G, Filip, P, Finch, E, Fine, V, Fisyak, Y, Gagliardi, C A, Gangadharan, D R, Geromitsos, A, Geurts, F, Ghosh, P, Gorbunov, Y N, Gordon, A, Grebenyuk, O, Grosnick, D, Guertin, S M, Gupta, A, Guryn, W, Haag, B, Hajkova, O, Hamed, A, Han, L X, Harris, J W, Hays-Wehle, J P, Heinz, M, Heppelmann, S, Hirsch, A, Hjort, E, Hoffmann, G W, Hofman, D J, Huang, B, Huang, H Z, Humanic, T J, Huo, L, Igo, G, Jacobs, P, Jacobs, W W, Jena, C, Jin, F, Joseph, J, Judd, E G, Kabana, S, Kang, K, Kapitan, J, Kauder, K, Ke, H, Keane, D, Kechechyan, A, Kettler, D, Kikola, D P, Kiryluk, J, Kisiel, A, Kizka, V, Knospe, A G, Koetke, D D, Kollegger, T, Konzer, J, Koralt, I, Koroleva, L, Korsch, W, Kotchenda, L, Kouchpil, V, Kravtsov, P, Krueger, K, Krus, M, Kumar, L, Kurnadi, P, Lamont, M A C, Landgraf, J M, Lapointe, S, Lauret, J, Lebedev, A, Lednicky, R, Lee, J H, Leight, W, Levine, M J, Li, C, Li, L, Li, N, Li, W, Li, X, Li, X, Li, Y, Li, Z M, Lisa, M A, Liu, F, Liu, H, Liu, J, Ljubicic, T, Llope, W J, Longacre, R S, Love, W A, Lu, Y, Lukashov, E V, Luo, X, Ma, G L, Ma, Y G, Mahapatra, D P, Majka, R, Mall, O I, Mangotra, L K, Manweiler, R, Margetis, S, Markert, C, Masui, H, Matis, H S, Matulenko, Y A, McDonald, D, McShane, T S, Meschanin, A, Milner, R, Minaev, N G, Mioduszewski, S, Mischke, A, Mitrovski, M K, Mohanty, B, Mondal, M M, Morozov, B, Morozov, D A, Munhoz, M G, Naglis, M, Nandi, B K, Nayak, T K, Netrakanti, P K, Nogach, L V, Nurushev, S B, Odyniec, G, Ogawa, A, Oh, K, Ohlson, A, Okorokov, V, Oldag, E W, Olson, D, Pachr, M, Page, B S, Pal, S K, Pandit, Y, Panebratsev, Y, Pawlak, T, Pei, H, Peitzmann, T, Perkins, C, Peryt, W, Phatak, S C, Pile, P, Planinic, M, Ploskon, M A, Pluta, J, Plyku, D, Poljak, N, Poskanzer, A M, Potukuchi, B V K S, Powell, C B, Prindle, D, Pruthi, N K, Pujahari, P R, Putschke, J, Qiu, H, Raniwala, R, Raniwala, S, Redwine, R, Reed, R, Ritter, H G, Roberts, J B, Rogachevskiy, O V, Romero, J L, Rose, A, Ruan, L, Rusnak, J, Sahoo, N R, Sakai, S, Sakrejda, I, Sakuma, T, Salur, S, Sandweiss, J, Sangaline, E, Sarkar, A, Schambach, J, Scharenberg, R P, Schmah, A M, Schmitz, N, Schuster, T R, Seele, J, Seger, J, Selyuzhenkov, I, Seyboth, P, Shahaliev, E, Shao, M, Sharma, M, Shi, S S, Shou, Q Y, Sichtermann, E P, Simon, F, Singaraju, R N, Skoby, M J, Smirnov, N, Spinka, H M, Srivastava, B, Stanislaus, T D S, Staszak, D, Steadman, S G, Stevens, J R, Stock, R, Strikhanov, M, Stringfellow, B, Suaide, A A P, Suarez, M C, Subba, N L, Sumbera, M, Sun, X M, Sun, Y, Sun, Z, Surrow, B, Svirida, D N, Symons, T J M, De Toledo, A S, Takahashi, J, Tang, A H, Tang, Z, Tarini, L H, Tarnowsky, T, Thein, D, Thomas, J H, Tian, J, Timmins, A R, Tlusty, D, Tokarev, M, Tram, V N, Trentalange, S, Tribble, R E, Tribedy, P, Tsai, O D, Ullrich, T, Underwood, D G, Van Buren, G, Van Nieuwenhuizen, G, Vanfossen, J A, Varma, R, Vasconcelos, G M S, Vasiliev, A N, Videbæk, F, Viyogi, Y P, Vokal, S, Wada, M, Walker, M, Wang, F, Wang, G, Wang, H, Wang, J S, Wang, Q, Wang, X L, Wang, Y, Webb, G, Webb, J C, Westfall, G D, Whitten, C, Wieman, H, Wissink, S W, Witt, R, Witzke, W, Wu, Y F, Xiao, Z, Xie, W, Xu, H, Xu, N, Xu, Q H, Xu, W, Xu, Y, Xu, Z, Xue, L, Yang, Y, Yepes, P, Yip, K, Yoo, I K, Zawisza, M, Zbroszczyk, H, Zhan, W, Zhang, J B, Zhang, S, Zhang, W M, Zhang, X P, Zhang, Y, Zhang, Z P, Zhao, J, Zhong, C, Zhou, W, Zhu, X, Zhu, Y H, Zoulkarneev, R & Zoulkarneeva, Y 2014, 'Event-plane-dependent dihadron correlations with harmonic vn subtraction in Au + Au collisions at s NN =200 GeV', Physical Review. C, Nuclear physics, vol. 89, no. 4, 041901. https://doi.org/10.1103/PhysRevC.89.041901