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Sarkar, A. V. Brandin, A. Vossen, B. A. Trzeciak, B. Di Ruzza, B. Huang, B. K. Nandi, B. Mohanty, B. Pawlik, B. Sharma, B. S. Page, B. Srivastava, B. Stringfellow, B. Summa, B. Surrow, C. A. Gagliardi, C. Dilks, C. E. Flores, C. Li, C. Markert, C. M. Du, C. Perkins, C. Yang, C. Zhong, D. Arkhipkin, D. Cebra, D. D. Koetke, D. Garand, D. Grosnick, D. G. Underwood, D. J. Hofman, D. Kalinkin, D. Keane, D. McDonald, D. Morozov, D. Olvitt Jr., D. P. Kikola, D. S. Gunarathne, D. Smirnov, D. Tlusty, E. C. Aschenauer, E. G. Judd, E. P. Sichtermann, E. Shahaliev, F. Geurts, F. Liu, F. Videb{\\ae}k, F. Wang, G. Agakishiev, G. Contin, G. D. Westfall, G. Eppley, G. Igo, G. L. Ma, G. Nigmatkulov, G. Odyniec, G. S. Averichev, G. Van Buren, G. van Nieuwenhuizen, G. Wang, G. Webb, G. W. Hoffmann, H. Caines, H. G. Ritter, H. Jang, H. J. Crawford, H. Masui, H. M. Spinka, H. Pei, H. Qiu, H. S. Matis, H. Wang, H. Wieman, H. W. Ke, H. Xu, H. Zbroszczyk, H. Z. Huang, I. Alekseev, I. Bunzarov, I. 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Mustafa, M. K. Sharma, M. Lomnitz, M. M. Aggarwal, M. M. Mondal, M. Planinic, M. Posik, M. Shao, M. Simko, M. Stepanov, M. Strikhanov, M. Sumbera, M. Tokarev, M. Vandenbroucke, M. Zyzak, N. G. Minaev, N. K. Pruthi, N. Magdy, N. Poljak, N. R. Sahoo, N. Schmitz, N. Shah, N. Smirnov, N. Svirida, N. Xu, N. Yu, O. D. Tsai, O. Evdokimov, O. Eyser, O. Rusnakova, O. V. Rogachevskiy, P. Bhattarai, P. Chaloupka, P. Federic, P. Filip, P. Huck, P. Kravtsov, P. K. Sahu, P. Pile, P. Seyboth, P. Sorensen, P. Tribedy, P. V. Shanmuganathan, P. Yepes, Q. H. Xu, Q. Yang, Q. Y. Shou, R. A. Kycia, R. Bellwied, R. Esha, R. E. Tribble, R. Fatemi, R. Haque, R. Lednicky, R. L. Ray, R. Ma, R. Majka, R. Pak, R. P. Scharenberg, R. Raniwala, R. R. Debbe, R. Sikora, R. S. Longacre, R. Stock, R. Varma, R. Vertesi, R. Witt, S. A. Voloshin, S. B. Nurushev, S. Chattopadhyay, S. Das, S. Fazio, S. Gupta, S. Heppelmann, S. Horvat, S. Kabana, S. K. Tripathy, S. Margetis, S. Mioduszewski, S. Ramachandran, S. Raniwala, S. Salur, S. S. Shi, STAR Collaboration: L. Adamczyk, S. Trentalange, S. Vokal, S. W. Wissink, S. Yang, S. Y. Noh, S. Zhang, T. D. S. Stanislaus, T. G. Dedovich, T. J. Humanic, T. K. Nayak, T. Kollegger, T. Ljubicic, T. P. Burton, T. Tarnowsky, T. Ullrich, V. Okorokov, W. B. Schmidke, W. Christie, W. Guryn, W. J. Llope, W. Li, W. Q. Shen, W. W. Jacobs, W. Xie, W. Zha, X. Chen, X. Dong, X. Huang, X. Li, X. Luo, X. M. Sun, X. P. Zhang, X. Sun, X. Zhu, Y. Fisyak, Y. F. Wu, Y. F. Xu, Y. G. Ma, Y. Guo, Y. Li, Y. Pandit, Y. Panebratsev, Y. P. Viyogi, Y. Sun, Y. Wang, Y. X. Pan, Y. Yang, Y. Zhang, Y. Zoulkarneeva, Z. Ahammed, Z. Chang, Z. Feng, Z. G. Xiao, Z. H. Khan, Z. M. Li, Z. Sun, Z. Tang, Z. Xu, Z. Ye, Z. Zhang","submitted_at":"2015-04-01T23:35:47Z","abstract_excerpt":"We report the observation of transverse polarization-dependent azimuthal correlations in charged pion pair production with the STAR experiment in $p^\\uparrow+p$ collisions at RHIC. 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