| Autor: |
J. Engelage, Michal Sumbera, G. Nigmatkulov, J. M. Landgraf, I. G. Alekseev, M. Strikhanov, R. Witt, W. J. Llope, M. A. Lisa, J. C. Mei, S. Fazio, S. Mioduszewski, H. Z. Huang, S. Vokal, Alexander Jentsch, S. W. Wissink, Q. H. Xu, G. Eppley, Donald M. McDonald, Prithwish Tribedy, T. Nonaka, B. K. Srivastava, J. Xu, A. Attri, Y. Zhang, G. Odyniec, Y. Zoulkarneeva, Shangfeng Yang, J. H. Chen, J. M. Campbell, J. Pluta, W. Li, M. Calderon De La Barca Sanchez, A. I. Hamad, Haiyan Wang, J. Thäder, T. G. Dedovich, J. C. Dunlop, L. Wen, J. Sandweiss, D. A. Morozov, Zubayer Ahammed, J. D. Roth, Sedigheh Jowzaee, Xiang Li, B. Huang, J. Y. Zhang, N. Yu, M. Shao, Y. X. Pan, G. Van Buren, Kejun Kang, L. V. Nogach, S. S. Shi, Xiaofeng Luo, I. Sakrejda, Guo-Liang Ma, Sumit R. Das, M. J. Skoby, G. Van Nieuwenhuizen, K. Poniatowska, R. S. Longacre, W. Solyst, Rene Bellwied, L. Fulek, Q. Y. Shou, J. Porter, L. C. Bland, M. Tokarev, Yang Yang, S. K. Gupta, Giacomo Contin, A. S. Hirsch, Xiaofeng Zhu, R. E. Tribble, Madan M. Aggarwal, R. Pak, Gerald W Hoffmann, D. Arkhipkin, Wei Xie, A. Hamed, P. Kravtsov, A. M. Schmah, Fuqiang Wang, Nasim, M. A.C. Lamont, R. Stock, S. Heppelmann, B. J. Summa, J. L. Drachenberg, Olga Evdokimov, A. Ogawa, Bedangadas Mohanty, M. R. Girard, C. Yang, Nihar Sahoo, Nilay Shah, G. Igo, J. Novak, C-Q. Li, D. K. Mishra, Jian Deng, A. Aparin, Jorn Henning Putschke, T. D. S. Stanislaus, X. C. Chen, G. Agakishiev, D. S. Gunarathne, J. B. Zhang, D. D. Koetke, B. Sharma, J. E. Draper, D. N. Svirida, A. Sarkar, H. H. Wieman, A. Manion, P. Huck, A. V. Brandin, M. J. Rehbein, R. P. Scharenberg, Christina Markert, J. Bouchet, S. Ramachandran, K. Kauder, O. Eyser, Xiangming Sun, Jay Roberts, D. Cebra, D. Smirnov, O. Rusnakova, H. S. Matis, K. Xin, K. D. Landry, Yu-Gang Ma, F. Videbæk, G. Webb, J. Butterworth, S. Kabana, M. M. Mondal, D. Kalinkin, P. Bhattarai, Isaac Upsal, H. W. Ke, Guannan Xie, Xuan Zhang, Sukalyan Chattopadhyay, L. K. Kosarzewski, B. Di Ruzza, W. W. Jacobs, Anthony Robert Timmins, Vipul Bairathi, J. Lauret, S. B. Nurushev, Y. Pandit, Z. Chang, S. Esumi, Adam Ryszard Kisiel, Y. F. Xu, N. Schmitz, L. Yi, Hanna Paulina Zbroszczyk, A. Vossen, H. J. Crawford, Hao Qiu, Z. H. Khan, I. K. Yoo, D. G. Underwood, R. Lednicky, A. M. Poskanzer, Z. Ye, J. W. Harris, L. Kochenda, T. Tarnowsky, P. Chaloupka, E. Shahaliev, Z. J. Xu, R. Reed, Z. Feng, M. Lomnitz, R. Haque, J. K. Adkins, Y. J. Sun, C. Dilks, H. G. Ritter, X. Huang, A. Kechechyan, N. K. Pruthi, Jaroslav Bielcik, M. Posik, S. Trentalange, D. L. Olvitt, R. Fatemi, Rafal Sikora, C. E. Flores, E. G. Judd, L. He, Q. Yang, Pradip Kumar Sahu, A. H. Tang, K. Krueger, T. Sugiura, H. M. Spinka, O. V. Rogachevskiy, B. Pawlik, A. Quintero, M. Zyzak, T. J. Humanic, I. Bunzarov, I. Kisel, A. Gibson, S. Zhang, K. Yip, J. S. Wang, Abdel Nasser Tawfik, Basanta Kumar Nandi, J. Cheng, R. R. Debbe, M. Cherney, R. Varma, B. S. Page, Bernd Surrow, Lokesh Kumar, V. A. Okorokov, J. H. Thomas, Hua Pei, D. P. Kikola, B. Stringfellow, S. K. Tripathy, L. C. De Silva, L. P. Zhou, W. B. Schmidke, C. A. Gagliardi, M. Stepanov, G. S. Averichev, Roli Esha, Zongye Zhang, I. G. Bordyuzhin, Jie Zhao, T. Lin, S. Horvat, Jana Bielcikova, J. L. Romero, Arka Chatterjee, W. Zha, E. Finch, Xuedong Bai, M. K. Mustafa, W. Guryn, Y. Li, S. Singha, J. Fedorisin, P. Federic, E. P. Sichtermann, T. Ullrich, C. M. Du, H. S. Xu, Y. Guo, Jongmin Lee, R. L. Ray, R. Ma, T. Ljubicic, Niseem Magdy, H. Caines, F. Liu, Miroslav Simko, Mariusz Przybycien, Siwei Luo, J. Jia, Muhammad Usman Ashraf, R. D. Majka, Sergey Voloshin, K. Jiang, J. Schambach, Yanjun Wu, W. Christie, Anik Gupta, Frank Jm Geurts, C. Zhong, E. C. Aschenauer, S. Margetis, Andrey Vasiliev, O. D. Tsai, L. Song, W. Q. Shen, X. Dong, Janet Elizabeth Seger, D. Garand, Sevil Salur, K. Meehan, Anju Bhasin, A. Sharma, T. Niida, A. Lebedev, S. McKinzie, Z. Shi, A. K. Bhati, D. Keane, Nikolai Smirnov, Zebo Tang, L. G. Efimov, T. K. Nayak, Leo Clifford Greiner, Y. Panebratsev, D. Grosnick, R. Aoyama, C. Perkins, N. Xu, P. Filip, P. Pile, G. D. Westfall, J. Rusnak, A. F. Kraishan, L. Ruan, T. Todoroki, Zhigang Xiao, T. Huang, P. Seyboth, Leszek Adamczyk, Yunpeng Liu, Derek Anderson, Z. W. Miller, D. Tlusty, N. G. Minaev, Y. Wang, Y. Fisyak, Lin Ma, K. Oh, Mukesh Sharma, G. Wang, Z. J. Sun, Robert Vertesi, P. Sorensen, L. Didenko, I. Chakaberia, J. C. Webb, James Brandenburg, P. V. Shanmuganathan, L. E. Dunkelberger, A. A. Derevschikov |
| Popis: |
We present the first measurement of charge-dependent directed flow in Cu+Au collisions at sqrt[s_{NN}]=200 GeV. The results are presented as a function of the particle transverse momentum and pseudorapidity for different centralities. A finite difference between the directed flow of positive and negative charged particles is observed that qualitatively agrees with the expectations from the effects of the initial strong electric field between two colliding ions with different nuclear charges. The measured difference in directed flow is much smaller than that obtained from the parton-hadron-string-dynamics model, which suggests that most of the electric charges, i.e., quarks and antiquarks, have not yet been created during the lifetime of the strong electric field, which is of the order of, or less than, 1 fm/c. |
