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214 results on '"R, Zoulkarneev"'

1. Erratum: Azimuthal Anisotropy of KS0 and Λ+Λ¯ Production at Midrapidity from Au+Au Collisions at sNN=130 GeV [Phys. Rev. Lett. 89 , 132301 (2002)]

Author: S. P. Chernenko, W. J. Llope, A. Cardenas, H. Long, R. Lednický, V. A. Nikitin, K. E. Shestermanov, A. Stolpovsky, R. S. Longacre, W. Christie, L. Kotchenda, H. Bichsel, P. Seyboth, V. Trofimov, Guy Paic, A. Chikanian, A. V. Brandin, S. S. Shimanskii, A. I. Kulikov, Masashi Kaneta, W. M. Zhang, L. C. Bland, Y. Panebratsev, R.Kh. Kutuev, Andrey Vasiliev, Joram Berger, T. Todoroki, Adam Ryszard Kisiel, J. B. Carroll, A. E. Yakutin, G. Igo, M. Oldenburg, H. J. Crawford, M. Castro, M. Calderon De La Barca Sanchez, G. Rai, J. W. Mitchell, N. Schmitz, Janet Elizabeth Seger, VL Rykov, B. D. Anderson, V. Petrov, E. Shahaliev, A. Boucham, T. J. Humanic, V. B. Dunin, A. C. Saulys, Z. Z. Xu, Q. Li, R. Witt, S. E. Vigdor, T. W. Henry, Christian Claude Kuhn, W. S. Deng, V. Ghazikhanian, Nikita Smirnov, I.A. Savin, M. Csanád, A. I. Pavlinov, F. Liu, M. B. Tonjes, J. W. Harris, B. E. Bonner, N. T. Porile, O. D. Tsai, J. L. Romero, Mirko Planinic, H. M. Spinka, C. E. Allgower, G. Eppley, S. Bekele, V. Morozov, Michael Kramer, M. Cherney, B. Lasiuk, E. Finch, Thomas Michael Cormier, R. Willson, D. G. Underwood, Michael W. Anderson, E. Gushin, P. Yepes, V. Eckardt, R. Ma, P. Nevski, J. H. Thomas, D. Hardtke, F. Laue, A. H. Tang, R. D. Majka, J. Pluta, L. Liu, V. M. Leontiev, Olivier Ravel, G. LoCurto, C. O. Blyth, E. Hjort, I. Zborovský, Yu A. Matulenko, M. Horsley, G. Skoro, B. Stringfellow, T. S. McShane, Rene Bellwied, C. P. Lansdell, R. E. Tribble, R.J.M. Snellings, Gerald W Hoffmann, J. N. Marx, B. Choi, J. G. Cramer, Thomas Dietel, Alexander Kovalenko, L. V. Nogach, A. P. Meschanin, Y. Fisyak, Ian Johnson, Christophe Pierre Suire, J. Sowinski, J. Schambach, D. Reichhold, T. J. M. Symons, T. Niida, A. Lebedev, M. M. de Moura, A. Szanto de Toledo, T. Pawlak, Morton Kaplan, P. Sorensen, G. Van Buren, Sevil Salur, Saurabh Pandey, A. Tai, T. W. Ludlam, J. Amonett, J. M. Nelson, V. Emelianov, D. Keane, W. Peryt, R. Stock, L. G. Efimov, D. Seliverstov, A. Schüttauf, G. S. Averichev, J. Porter, C. Roy, A. Klyachko, Vladimir Tikhomirov, P. Chaloupka, S. Trentalange, A. Ishihara, Yu Chen, Gregory Rakness, B. K. Srivastava, I. M. Vasilevski, F. Retiere, J. Gans, Boris Hippolyte, J. C. Dunlop, Zubayer Ahammed, M. J. LeVine, H. G. Ritter, A. S. Konstantinov, B. Norman, A. A. Kuznetsov, S. Y. Panitkin, E. Yamamoto, J. Engelage, David Lynn, J. G. Ma, J. Takahashi, M. A. C. Lamont, S. B. Nurushev, Z. Milosevich, N. G. Minaev, Sergey Voloshin, K. J. Foley, V. S. Shvetcov, Q. J. Liu, C. A. Whitten, J. Baudot, A. Rose, Y. V. Zanevski, S. Lange, S. J. Lindenbaum, Yu. Ivanshin, N. Xu, John N. Wood, M. Guedon, A. M. Poskanzer, A. M. VanderMolen, Russell Wells, J. M. Landgraf, M. Strikhanov, A. Billmeier, J. Putschke, J. W. Watson, A. Ogawa, Thomas A. Trainor, R. P. Scharenberg, Christina Markert, H. S. Matis, G. Odyniec, J. Sandweiss, Z. Liu, W. W. Jacobs, G. D. Westfall, H. Ward, L. S. Schroeder, S. V. Razin, L. Gaudichet, H. Zhang, Jay Roberts, Jinghui Yang, Malgorzata Anna Janik, C. L. Kunz, K. Krueger, C. F. Moore, C. Struck, M. Lopez-Noriega, I. Sakrejda, M. L. Miller, Fuqiang Wang, P. Szarwas, A. S. Hirsch, P. M. Jacobs, P. Kravtsov, C. Adler, E. G. Judd, Michael A. Thompson, Michal Sumbera, Jeffrey G. Reid, A. A. P. Suaide, E. Sugarbaker, S. R. Klein, V. Faine, J. Castillo, S. W. Wissink, J. E. Draper, H. Z. Huang, N.D. Gagunashvili, O. Barannikova, D. L. Olson, Sukalyan Chattopadhyay, T. J. Hallman, V. Perevoztchikov, K. Filimonov, A. A. Derevschikov, Marie Germain, V. I. Yurevich, A. N. Zubarev, M. Messer, P. Fachini, V. V. Belaga, Peter Graham Jones, Lee Stuart Barnby, F. Meissner, L. Didenko, M. Kopytine, J. Fu, M. Tokarev, K. Schweda, H. H. Wieman, J. Kiryluk, Rajarshi Ray, L. Lakehal-Ayat, W. A. Love, Vitaly Okorokov, Bernd Surrow, J. L. Klay, C. A. Gagliardi, A. Ridiger, T. Herston, R. V. Cadman, S. Heppelmann, D. Flierl, Frank Jm Geurts, L. Martin, J. P. Coffin, O. V. Rogachevski, V. A. Moiseenko, Marcelo Gameiro Munhoz, D. J. Prindle, E. J. Stephenson, M. A. Lisa, S. Margetis, O. A. Grachov, B. Erazmus, Gerd Joachim Kunde, D. Cebra, A. Bravar, Yu Melnick, J. Balewski, Claude Andre Pruneau, T. Ullrich, R. Zoulkarneev, V. Grigoriev, E. Potrebenikova, T. Ljubicic, and H. Caines
Subjects: Physics, Nuclear physics, Azimuth, General Physics and Astronomy, Anisotropy
Published: 2021

2. Erratum: Azimuthal Anisotropy at the Relativistic Heavy Ion Collider: The First and Fourth Harmonics [Phys. Rev. Lett. 92 , 062301 (2004)]

Author: J. W. Harris, R. Willson, D. G. Underwood, D. Thein, R. V. Cadman, C. Roy, P. Seyboth, M. Kopytine, J. Fu, E. Gushin, P. Yepes, V. Eckardt, D. Reichhold, Jianhong Wu, Frank Jm Geurts, I.A. Savin, N. T. Porile, A. H. Tang, T. J. M. Symons, A. Klyachko, J. H. Thomas, M. Tokarev, C-Q. Li, P. Sorensen, M. Shao, G. Van Buren, S. P. Chernenko, Vladimir Tikhomirov, R. Witt, V. Trofimov, R. P. Scharenberg, Christina Markert, W. T. Waggoner, Yu A. Matulenko, M. Horsley, T. W. Henry, W. J. Llope, P. Chaloupka, V. Yu Khodyrev, B. K. Srivastava, J. C. Dunlop, J. Gans, H. S. Matis, Zubayer Ahammed, M. J. LeVine, S. K. Badyal, S. Trentalange, L. S. Schroeder, S. Bhardwaj, Boris Hippolyte, S. V. Razin, M. Calderon De La Barca Sanchez, H. H. Wieman, B. Stringfellow, L. Gaudichet, H. Long, Sukalyan Chattopadhyay, W. W. Jacobs, J. Lauret, M. S. Ganti, R.Kh. Kutuev, Joram Berger, J. E. Gonzalez, Bedangadas Mohanty, T. W. Ludlam, J. M. Nelson, A. Ridiger, G. S. Averichev, K. Schweda, Guy Paic, A. Chikanian, S. S. Shimanskii, Jay Roberts, S. Stanislaus, V. B. Dunin, S. Mahajan, Q. Li, M. Heinz, Michael Kramer, I. Zborovský, L. K. Mangotra, T. J. Hallman, Y. G. Ma, W. Peryt, D. K. Mishra, S. Heppelmann, D. Flierl, J. Porter, V. Ghazikhanian, J. L. Romero, R. Lednický, L. Martin, J. Engelage, John N. Wood, Premomoy Ghosh, J. M. Landgraf, M. Strikhanov, C. Perkins, T. Niida, A. Lebedev, M. M. de Moura, J. G. Cramer, R. Manweiler, T. S. McShane, Y. Fisyak, Ian Johnson, T. Todoroki, Adam Ryszard Kisiel, J. B. Carroll, Christophe Pierre Suire, H. J. Crawford, G. Wang, V. A. Nikitin, K. E. Shestermanov, A. Boucham, T. J. Humanic, D. Arkhipkin, S. Bekele, A. Ishihara, H. Jiang, Basanta Kumar Nandi, M. Guedon, A. M. Poskanzer, A. M. VanderMolen, Russell Wells, J. P. Coffin, O. V. Rogachevski, C. P. Lansdell, E. Sugarbaker, R.J.M. Snellings, H. Z. Huang, C. Struck, M. Lopez-Noriega, F. Meissner, J. Kiryluk, Rajarshi Ray, D. A. Morozov, J. L. Klay, M. Botje, A. Billmeier, G. Odyniec, J. Sandweiss, Z. Liu, R. Fatemi, C. O. Blyth, R. S. Longacre, P. Bhaskar, V. Perevoztchikov, K. Filimonov, Q. J. Liu, C. A. Whitten, L. Ruan, M. J. Mora-Corral, A. Rose, S. Lange, S. J. Lindenbaum, H. Ward, Sergey Voloshin, K. J. Foley, D. Seliverstov, J. Takahashi, M. A. C. Lamont, S. B. Nurushev, Z. Milosevich, X. L. Wang, B. I. Bezverkhny, S. Margetis, O. A. Grachov, X. Dong, S. K. Pal, A. Bravar, V. Grigoriev, E. Potrebenikova, V. V. Belaga, B. Erazmus, Gerd Joachim Kunde, D. Cebra, M. Estienne, E. Finch, A. Szanto de Toledo, T. Pawlak, A. Stolpovsky, L. Kotchenda, J. R. Adams, M. Castro, L. C. Bland, C. L. Kunz, K. Krueger, C. F. Moore, Y. Panebratsev, D. Grosnick, G. Rai, R. Picha, N. Xu, P. Filip, Debasish Das, G. D. Westfall, S. C. Phatak, A. Kumar, T. Ljubicic, M. Cherney, E. G. Judd, Thomas Michael Cormier, S. Das, P. Nevski, A. Gupta, B. Norman, Malgorzata Anna Janik, J. Baudot, Y. V. Zanevski, Saroj K. Nayak, Morton Kaplan, X. Z. Cai, Peter Graham Jones, Yu Melnick, H. Bichsel, Raghunath Sahoo, S. M. Guertin, D. P. Mahapatra, Yu Chen, M. Csanád, J. N. Marx, Mirko Planinic, P. A. Żołnierczuk, N.D. Gagunashvili, Michael W. Anderson, L. Liu, B. Choi, F. Du, S. Kabana, Olivier Ravel, Y. P. Viyogi, H. Caines, Sudhir Raniwala, Camelia Mironov, Michal Sumbera, A. A. P. Suaide, G. Renault, Thomas Dietel, Zhongyukun Xu, M. Potekhin, G. Igo, Alexander Kovalenko, L. V. Nogach, V. I. Kravtsov, M. R. Dutta Majumdar, M. Oldenburg, J. Zoulkarneeva, V. Faine, J. W. Mitchell, Z. P. Zhang, V. Petrov, J. Castillo, S. W. Wissink, Anand Kumar Dubey, L. Didenko, F. Retiere, A. S. Hirsch, P. M. Jacobs, J. Balewski, Rashmi Raniwala, Claude Andre Pruneau, P. Kravtsov, C. Adler, B. V. K. S. Potukuchi, David Lynn, J. E. Draper, N. G. Minaev, N. Schmitz, E. Shahaliev, T. Ullrich, R. Zoulkarneev, H. G. Ritter, Jeffrey G. Reid, D. Magestro, J. Putschke, J. W. Watson, E. Hjort, Gregory Rakness, H. M. Spinka, A. Ogawa, H. F. Chen, Shengli Huang, Thomas A. Trainor, G. Skoro, J. G. Ma, R. N. Singaraju, Marcelo Gameiro Munhoz, D. J. Prindle, Z. Z. Xu, A. P. Meschanin, S. R. Klein, Manish Sharma, M. A. Lisa, W. J. Dong, O. Barannikova, D. L. Olson, Nikita Smirnov, A. A. Derevschikov, Vitaly Okorokov, Bernd Surrow, Marie Germain, A. Tai, G. Sood, C. A. Gagliardi, J. Amonett, T. Herston, Madan M. Aggarwal, A. N. Zubarev, Fuqiang Wang, M. Messer, V. Emelianov, V. I. Yurevich, Frank Simon, P. Fachini, A. K. Bhati, D. Keane, S. Gronstal, Lee Stuart Barnby, R. Stock, L. G. Efimov, W. A. Love, D. D. Koetke, T. K. Nayak, B. E. Bonner, O. D. Tsai, B. Lasiuk, M. A. Vasiliev, Sevil Salur, Saurabh Pandey, W. Christie, A. I. Kulikov, Masashi Kaneta, W. M. Zhang, Andrey Vasiliev, Janet Elizabeth Seger, T. Kollegger, A. I. Pavlinov, F. Liu, M. B. Tonjes, V. Morozov, T. D. Gutierrez, D. Hardtke, F. Laue, R. D. Majka, J. Sowinski, Z. M. Wang, J. Schambach, Julien Faivre, A. V. Brandin, S. E. Vigdor, Christian Claude Kuhn, R. Ma, B. D. Anderson, H. Zhang, G. Eppley, I. Sakrejda, J. Pluta, M. L. Miller, L. Molnar, P. Szarwas, Rene Bellwied, R. E. Tribble, A. A. Kuznetsov, S. Y. Panitkin, Gerald W Hoffmann, E. Yamamoto, and M. D. Trivedi
Subjects: Nuclear physics, Physics, Azimuth, Harmonics, General Physics and Astronomy, Anisotropy, Relativistic Heavy Ion Collider
Published: 2021

3. Measurements of dihadron correlations relative to the event plane in Au+Au collisions at GeV *

Author: H. Agakishiev, M. M. Aggarwal, Z. Ahammed, A. V. Alakhverdyants, I. Alekseev, J. Alford, B. D. Anderson, C. D. Anson, D. Arkhipkin, G. S. Averichev, J. Balewski, D. R. Beavis, N. K. Behera, R. Bellwied, M. J. Betancourt, R. R. Betts, A. Bhasin, A. K. Bhati, H. Bichsel, J. Bielcik, J. Bielcikova, B. Biritz, L. C. Bland, W. Borowski, J. Bouchet, E. Braidot, A. V. Brandin, A. Bridgeman, S. G. Brovko, E. Bruna, S. Bueltmann, I. Bunzarov, T. P. Burton, X. Z. Cai, H. Caines, M. Calderón de la Barca Sánchez, D. Cebra, R. Cendejas, M. C. Cervantes, Z. Chajecki, P. Chaloupka, S. Chattopadhyay, H. F. Chen, J. H. Chen, J. Y. Chen, L. Chen, J. Cheng, M. Cherney, A. Chikanian, K. E. Choi, W. Christie, P. Chung, M. J. M. Codrington, R. Corliss, J. G. Cramer, H. J. Crawford, S. Dash, A. Davila Leyva, L. C. De Silva, R. R. Debbe, T. G. Dedovich, A. A. Derevschikov, R. Derradi de Souza, L. Didenko, P. Djawotho, S. M. Dogra, X. Dong, J. L. Drachenberg, J. E. Draper, J. C. Dunlop, L. G. Efimov, M. Elnimr, J. Engelage, G. Eppley, M. Estienne, L. Eun, O. Evdokimov, R. Fatemi, J. Fedorisin, A. Feng, R. G. Fersch, P. Filip, E. Finch, V. Fine, Y. Fisyak, C. A. Gagliardi, D. R. Gangadharan, A. Geromitsos, F. Geurts, P. Ghosh, Y. N. Gorbunov, A. Gordon, O. Grebenyuk, D. Grosnick, S. M. Guertin, A. Gupta, W. Guryn, B. Haag, O. Hajkova, A. Hamed, L-X. Han, J. W. Harris, J. P. Hays-Wehle, M. Heinz, S. Heppelmann, A. Hirsch, E. Hjort, G. W. Hoffmann, D. J. Hofman, B. Huang, H. Z. Huang, T. J. Humanic, L. Huo, G. Igo, P. Jacobs, W. W. Jacobs, C. Jena, F. Jin, J. Joseph, E. G. Judd, S. Kabana, K. Kang, J. Kapitan, K. Kauder, H. Ke, D. Keane, A. Kechechyan, D. Kettler, D. P. Kikola, J. Kiryluk, A. Kisiel, V. Kizka, A. G. Knospe, D. D. Koetke, T. Kollegger, J. Konzer, I. Koralt, L. Koroleva, W. Korsch, L. Kotchenda, V. Kouchpil, P. Kravtsov, K. Krueger, M. Krus, L. Kumar, P. Kurnadi, M. A. C. Lamont, J. M. Landgraf, S. LaPointe, J. Lauret, A. Lebedev, R. Lednicky, J. H. Lee, W. Leight, M. J. LeVine, C. Li, L. Li, N. Li, W. Li, X. Li, Y. Li, Z. M. Li, M. A. Lisa, F. Liu, H. Liu, J. Liu, T. Ljubicic, W. J. Llope, R. S. Longacre, W. A. Love, Y. Lu, E. V. Lukashov, X. Luo, G. L. Ma, Y. G. Ma, D. P. Mahapatra, R. Majka, O. I. Mall, L. K. Mangotra, R. Manweiler, S. Margetis, C. Markert, H. Masui, H. S. Matis, Yu. A. Matulenko, D. McDonald, T. S. McShane, A. Meschanin, R. Milner, N. G. Minaev, S. Mioduszewski, A. Mischke, M. K. Mitrovski, B. Mohanty, M. M. Mondal, B. Morozov, D. A. Morozov, M. G. Munhoz, M. Naglis, B. K. Nandi, T. K. Nayak, P. K. Netrakanti, L. V. Nogach, S. B. Nurushev, G. Odyniec, A. Ogawa, null Oh, null Ohlson, V. Okorokov, E. W. Oldag, D. Olson, M. Pachr, B. S. Page, S. K. Pal, Y. Pandit, Y. Panebratsev, T. Pawlak, H. Pei, T. Peitzmann, C. Perkins, W. Peryt, S. C. Phatak, P. Pile, M. Planinic, M. A. Ploskon, J. Pluta, D. Plyku, N. Poljak, A. M. Poskanzer, B. V. K. S. Potukuchi, C. B. Powell, D. Prindle, N. K. Pruthi, P. R. Pujahari, J. Putschke, H. Qiu, R. Raniwala, S. Raniwala, R. L. Ray, R. Redwine, R. Reed, H. G. Ritter, J. B. Roberts, O. V. Rogachevskiy, J. L. Romero, A. Rose, L. Ruan, J. Rusnak, N. R. Sahoo, S. Sakai, I. Sakrejda, T. Sakuma, S. Salur, J. Sandweiss, E. Sangaline, A. Sarkar, J. Schambach, R. P. Scharenberg, A. M. Schmah, N. Schmitz, T. R. Schuster, J. Seele, J. Seger, I. Selyuzhenkov, P. Seyboth, E. Shahaliev, M. Shao, M. Sharma, S. S. Shi, Q. Y. Shou, E. P. Sichtermann, F. Simon, R. N. Singaraju, M. J. Skoby, N. Smirnov, H. M. Spinka, B. Srivastava, T. D. S. Stanislaus, D. Staszak, S. G. Steadman, J. R. Stevens, R. Stock, M. Strikhanov, B. Stringfellow, A. A. P. Suaide, M. C. Suarez, N. L. Subba, M. Sumbera, X. M. Sun, Y. Sun, Z. Sun, B. Surrow, D. N. Svirida, T. J. M. Symons, A. Szanto de Toledo, J. Takahashi, A. H. Tang, Z. Tang, L. H. Tarini, T. Tarnowsky, D. Thein, J. H. Thomas, J. Tian, A. R. Timmins, D. Tlusty, M. Tokarev, V. N. Tram, S. Trentalange, R. E. Tribble, null Tribedy, O. D. Tsai, T. Ullrich, D. G. Underwood, G. Van Buren, G. van Nieuwenhuizen, J. A. Vanfossen, Jr., R. Varma, G. M. S. Vasconcelos, A. N. Vasiliev, F. Videbæk, Y. P. Viyogi, S. Vokal, M. Wada, M. Walker, F. Wang, G. Wang, H. Wang, J. S. Wang, Q. Wang, X. L. Wang, Y. Wang, G. Webb, J. C. Webb, G. D. Westfall, C. Whitten Jr., H. Wieman, S. W. Wissink, R. Witt, W. Witzke, Y. F. Wu, null Xiao, W. Xie, H. Xu, N. Xu, Q. H. Xu, W. Xu, Y. Xu, Z. Xu, L. Xue, Y. Yang, P. Yepes, K. Yip, I-K. Yoo, M. Zawisza, H. Zbroszczyk, W. Zhan, J. B. Zhang, S. Zhang, W. M. Zhang, X. P. Zhang, Y. Zhang, Z. P. Zhang, J. Zhao, C. Zhong, W. Zhou, X. Zhu, Y. H. Zhu, R. Zoulkarneev, and Y. Zoulkarneeva
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Star (game theory), Elliptic flow, Zero (complex analysis), Astronomy and Astrophysics, Parton, Correlation function (quantum field theory), Nuclear matter, 01 natural sciences, 0103 physical sciences, 010306 general physics, Jet quenching, Centrality, Instrumentation
Abstract: Dihadron azimuthal correlations containing a high transverse momentum ( ) trigger particle are sensitive to the properties of the nuclear medium created at RHIC through the strong interactions occurring between the traversing parton and the medium, i.e. jet-quenching. Previous measurements revealed a strong modification to dihadron azimuthal correlations in Au+Au collisions with respect to p+p and d+Au collisions. The modification increases with the collision centrality, suggesting a path-length or energy density dependence to the jet-quenching effect. This paper reports STAR measurements of dihadron azimuthal correlations in mid-central (20%-60%) Au+Au collisions at GeV as a function of the trigger particle's azimuthal angle relative to the event plane, . The azimuthal correlation is studied as a function of both the trigger and associated particle . The subtractions of the combinatorial background and anisotropic flow, assuming Zero Yield At Minimum (ZYAM), are described. The correlation results are first discussed with subtraction of the even harmonic (elliptic and quadrangular) flow backgrounds. The away-side correlation is strongly modified, and the modification varies with , with a double-peak structure for out-of-plane trigger particles. The near-side ridge (long range pseudo-rapidity correlation) appears to drop with increasing while the jet-like component remains approximately constant. The correlation functions are further studied with the subtraction of odd harmonic triangular flow background arising from fluctuations. It is found that the triangular flow, while responsible for the majority of the amplitudes, is not sufficient to explain the -dependence of the ridge or the away-side double-peak structure. The dropping ridge with could be attributed to a -dependent elliptic anisotropy; however, the physics mechanism of the ridge remains an open question. Even with a -dependent elliptic flow, the away-side correlation structure is robust. These results, with extensive systematic studies of the dihadron correlations as a function of , trigger and associated particle , and the pseudo-rapidity range , should provide stringent inputs to help understand the underlying physics mechanisms of jet-medium interactions in high energy nuclear collisions.
Published: 2021

4. STAR Collaboration

Author: B.I. Abelev, J. Adams, M.M. Aggarwal, Z. Ahammed, J. Amonett, B.D. Anderson, M. Anderson, D. Arkhipkin, G.S. Averichev, Y. Bai, J. Balewski, O. Barannikova, L.S. Barnby, J. Baudot, S. Bekele, V.V. Belaga, A. Bellingeri-Laurikainen, R. Bellwied, F. Benedosso, S. Bhardwaj, A. Bhasin, A.K. Bhati, H. Bichsel, J. Bielcik, J. Bielcikova, L.C. Bland, S.-L. Blyth, B.E. Bonner, M. Botje, J. Bouchet, A.V. Brandin, A. Bravar, M. Bystersky, R.V. Cadman, X.Z. Cai, H. Caines, M. Calderón de la Barca Sánchez, J. Castillo, O. Catu, D. Cebra, Z. Chajecki, P. Chaloupka, S. Chattopadhyay, H.F. Chen, J.H. Chen, J. Cheng, M. Cherney, A. Chikanian, W. Christie, J.P. Coffin, T.M. Cormier, M.R. Cosentino, J.G. Cramer, H.J. Crawford, D. Das, S. Das, M. Daugherity, M.M. de Moura, T.G. Dedovich, M. DePhillips, A.A. Derevschikov, L. Didenko, T. Dietel, P. Djawotho, S.M. Dogra, W.J. Dong, X. Dong, J.E. Draper, F. Du, V.B. Dunin, J.C. Dunlop, M.R. Dutta Mazumdar, V. Eckardt, W.R. Edwards, L.G. Efimov, V. Emelianov, J. Engelage, G. Eppley, B. Erazmus, M. Estienne, P. Fachini, R. Fatemi, J. Fedorisin, K. Filimonov, P. Filip, E. Finch, V. Fine, Y. Fisyak, J. Fu, C.A. Gagliardi, L. Gaillard, M.S. Ganti, V. Ghazikhanian, P. Ghosh, J.E. Gonzalez, Y.G. Gorbunov, H. Gos, O. Grebenyuk, D. Grosnick, S.M. Guertin, K.S.F.F. Guimaraes, N. Gupta, T.D. Gutierrez, B. Haag, T.J. Hallman, A. Hamed, J.W. Harris, W. He, M. Heinz, T.W. Henry, S. Hepplemann, B. Hippolyte, A. Hirsch, E. Hjort, A.M. Hoffman, G.W. Hoffmann, M.J. Horner, H.Z. Huang, S.L. Huang, E.W. Hughes, T.J. Humanic, G. Igo, P. Jacobs, W.W. Jacobs, P. Jakl, F. Jia, H. Jiang, P.G. Jones, E.G. Judd, S. Kabana, K. Kang, J. Kapitan, M. Kaplan, D. Keane, A. Kechechyan, V.Yu. Khodyrev, B.C. Kim, J. Kiryluk, A. Kisiel, E.M. Kislov, S.R. Klein, A. Kocoloski, D.D. Koetke, T. Kollegger, M. Kopytine, L. Kotchenda, V. Kouchpil, K.L. Kowalik, M. Kramer, P. Kravtsov, V.I. Kravtsov, K. Krueger, C. Kuhn, A.I. Kulikov, A. Kumar, A.A. Kuznetsov, M.A.C. Lamont, J.M. Landgraf, S. Lange, S. LaPointe, F. Laue, J. Lauret, A. Lebedev, R. Lednicky, C.-H. Lee, S. Lehocka, M.J. LeVine, C. Li, Q. Li, Y. Li, G. Lin, X. Lin, S.J. Lindenbaum, M.A. Lisa, F. Liu, H. Liu, J. Liu, L. Liu, Z. Liu, T. Ljubicic, W.J. Llope, H. Long, R.S. Longacre, W.A. Love, Y. Lu, T. Ludlam, D. Lynn, G.L. Ma, J.G. Ma, Y.G. Ma, D. Magestro, D.P. Mahapatra, R. Majka, L.K. Mangotra, R. Manweiler, S. Margetis, C. Markert, L. Martin, H.S. Matis, Yu.A. Matulenko, C.J. McClain, T.S. McShane, Yu. Melnick, A. Meschanin, J. Millane, M.L. Miller, N.G. Minaev, S. Mioduszewski, C. Mironov, A. Mischke, D.K. Mishra, J. Mitchell, B. Mohanty, L. Molnar, C.F. Moore, D.A. Morozov, M.G. Munhoz, B.K. Nandi, C. Nattrass, T.K. Nayak, J.M. Nelson, P.K. Netrakanti, L.V. Nogach, S.B. Nurushev, G. Odyniec, A. Ogawa, V. Okorokov, M. Oldenburg, D. Olson, M. Pachr, S.K. Pal, Y. Panebratsev, S.Y. Panitkin, A.I. Pavlinov, T. Pawlak, T. Peitzmann, V. Perevoztchikov, C. Perkins, W. Peryt, S.C. Phatak, R. Picha, M. Planinic, J. Pluta, N. Poljak, N. Porile, J. Porter, A.M. Poskanzer, M. Potekhin, E. Potrebenikova, B.V.K.S. Potukuchi, D. Prindle, C. Pruneau, J. Putschke, G. Rakness, R. Raniwala, S. Raniwala, R.L. Ray, S.V. Razin, J. Reinnarth, D. Relyea, F. Retiere, A. Ridiger, H.G. Ritter, J.B. Roberts, O.V. Rogachevskiy, J.L. Romero, A. Rose, C. Roy, L. Ruan, M.J. Russcher, R. Sahoo, T. Sakuma, S. Salur, J. Sandweiss, M. Sarsour, P.S. Sazhin, J. Schambach, R.P. Scharenberg, N. Schmitz, K. Schweda, J. Seger, I. Selyuzhenkov, P. Seyboth, A. Shabetai, E. Shahaliev, M. Shao, M. Sharma, W.Q. Shen, S.S. Shimanskiy, E. Sichtermann, F. Simon, R.N. Singaraju, N. Smirnov, R. Snellings, G. Sood, P. Sorensen, J. Sowinski, J. Speltz, H.M. Spinka, B. Srivastava, A. Stadnik, T.D.S. Stanislaus, R. Stock, A. Stolpovsky, M. Strikhanov, B. Stringfellow, A.A.P. Suaide, E. Sugarbaker, M. Sumbera, Z. Sun, B. Surrow, M. Swanger, T.J.M. Symons, A. Szanto de Toledo, A. Tai, J. Takahashi, A.H. Tang, T. Tarnowsky, D. Thein, J.H. Thomas, A.R. Timmins, S. Timoshenko, M. Tokarev, T.A. Trainor, S. Trentalange, R.E. Tribble, O.D. Tsai, J. Ulery, T. Ullrich, D.G. Underwood, G. Van Buren, N. van der Kolk, M. van Leeuwen, A.M. Vander Molen, R. Varma, I.M. Vasilevski, A.N. Vasiliev, R. Vernet, S.E. Vigdor, Y.P. Viyogi, S. Vokal, S.A. Voloshin, W.T. Waggoner, F. Wang, G. Wang, J.S. Wang, X.L. Wang, Y. Wang, J.W. Watson, J.C. Webb, G.D. Westfall, A. Wetzler, C. Whitten, H. Wieman, S.W. Wissink, R. Witt, J. Wood, J. Wu, N. Xu, Q.H. Xu, Z. Xu, P. Yepes, I.-K. Yoo, V.I. Yurevich, W. Zhan, H. Zhang, W.M. Zhang, Y. Zhang, Z.P. Zhang, Y. Zhao, C. Zhong, R. Zoulkarneev, Y. Zoulkarneeva, A.N. Zubarev, and J.X. Zuo
Subjects: Nuclear and High Energy Physics
Published: 2014

5. Evolution of the differential transverse momentum correlation function with centrality in Au + Au collisions at sNN=200 GeV

Author: G. Agakishiev, M.M. Aggarwal, Z. Ahammed, A.V. Alakhverdyants, I. Alekseev, J. Alford, B.D. Anderson, C.D. Anson, D. Arkhipkin, G.S. Averichev, J. Balewski, D.R. Beavis, N.K. Behera, R. Bellwied, M.J. Betancourt, R.R. Betts, A. Bhasin, A.K. Bhati, H. Bichsel, J. Bielcik, J. Bielcikova, B. Biritz, L.C. Bland, I.G. Bordyuzhin, W. Borowski, J. Bouchet, E. Braidot, A.V. Brandin, A. Bridgeman, S.G. Brovko, E. Bruna, S. Bueltmann, I. Bunzarov, T.P. Burton, X.Z. Cai, H. Caines, M. Calderón de la Barca Sánchez, D. Cebra, R. Cendejas, M.C. Cervantes, Z. Chajecki, P. Chaloupka, S. Chattopadhyay, H.F. Chen, J.H. Chen, J.Y. Chen, L. Chen, J. Cheng, M. Cherney, A. Chikanian, K.E. Choi, W. Christie, P. Chung, M.J.M. Codrington, R. Corliss, J.G. Cramer, H.J. Crawford, A. Davila Leyva, L.C. De Silva, R.R. Debbe, T.G. Dedovich, A.A. Derevschikov, R. Derradi de Souza, L. Didenko, P. Djawotho, S.M. Dogra, X. Dong, J.L. Drachenberg, J.E. Draper, J.C. Dunlop, L.G. Efimov, M. Elnimr, J. Engelage, G. Eppley, M. Estienne, L. Eun, O. Evdokimov, R. Fatemi, J. Fedorisin, R.G. Fersch, P. Filip, E. Finch, V. Fine, Y. Fisyak, C.A. Gagliardi, D.R. Gangadharan, F. Geurts, P. Ghosh, Y.N. Gorbunov, A. Gordon, O.G. Grebenyuk, D. Grosnick, S.M. Guertin, A. Gupta, S. Gupta, W. Guryn, B. Haag, O. Hajkova, A. Hamed, L.-X. Han, J.W. Harris, J.P. Hays-Wehle, M. Heinz, S. Heppelmann, A. Hirsch, E. Hjort, G.W. Hoffmann, D.J. Hofman, B. Huang, H.Z. Huang, T.J. Humanic, L. Huo, G. Igo, P. Jacobs, W.W. Jacobs, C. Jena, F. Jin, J. Joseph, E.G. Judd, S. Kabana, K. Kang, J. Kapitan, K. Kauder, H.W. Ke, D. Keane, A. Kechechyan, D. Kettler, D.P. Kikola, J. Kiryluk, A. Kisiel, V. Kizka, A.G. Knospe, D.D. Koetke, T. Kollegger, J. Konzer, I. Koralt, L. Koroleva, W. Korsch, L. Kotchenda, V. Kouchpil, P. Kravtsov, K. Krueger, M. Krus, L. Kumar, P. Kurnadi, M.A.C. Lamont, J.M. Landgraf, S. LaPointe, J. Lauret, A. Lebedev, R. Lednicky, J.H. Lee, W. Leight, M.J. LeVine, C. Li, L. Li, N. Li, W. Li, X. Li, Y. Li, Z.M. Li, L.M. Lima, M.A. Lisa, F. Liu, H. Liu, J. Liu, T. Ljubicic, W.J. Llope, R.S. Longacre, W.A. Love, Y. Lu, E.V. Lukashov, X. Luo, G.L. Ma, Y.G. Ma, D.P. Mahapatra, R. Majka, O.I. Mall, R. Manweiler, S. Margetis, C. Markert, H. Masui, H.S. Matis, Yu.A. Matulenko, D. McDonald, T.S. McShane, A. Meschanin, R. Milner, N.G. Minaev, S. Mioduszewski, M.K. Mitrovski, Y. Mohammed, B. Mohanty, M.M. Mondal, B. Morozov, D.A. Morozov, M.G. Munhoz, M.K. Mustafa, M. Naglis, B.K. Nandi, T.K. Nayak, P.K. Netrakanti, L.V. Nogach, S.B. Nurushev, G. Odyniec, A. Ogawa, K. Oh, A. Ohlson, V. Okorokov, E.W. Oldag, R.A.N. Oliveira, D. Olson, M. Pachr, B.S. Page, S.K. Pal, Y. Pandit, Y. Panebratsev, T. Pawlak, H. Pei, T. Peitzmann, C. Perkins, W. Peryt, P. Pile, M. Planinic, M.A. Ploskon, J. Pluta, D. Plyku, N. Poljak, J. Porter, A.M. Poskanzer, B.V.K.S. Potukuchi, C.B. Powell, D. Prindle, C. Pruneau, N.K. Pruthi, P.R. Pujahari, J. Putschke, H. Qiu, R. Raniwala, S. Raniwala, R. Redwine, R. Reed, H.G. Ritter, J.B. Roberts, O.V. Rogachevskiy, J.L. Romero, L. Ruan, J. Rusnak, N.R. Sahoo, I. Sakrejda, S. Salur, J. Sandweiss, E. Sangaline, A. Sarkar, J. Schambach, R.P. Scharenberg, A.M. Schmah, N. Schmitz, T.R. Schuster, J. Seele, J. Seger, I. Selyuzhenkov, P. Seyboth, N. Shah, E. Shahaliev, M. Shao, M. Sharma, S.S. Shi, Q.Y. Shou, E.P. Sichtermann, F. Simon, R.N. Singaraju, M.J. Skoby, N. Smirnov, D. Solanki, P. Sorensen, U.G. Souza, H.M. Spinka, B. Srivastava, T.D.S. Stanislaus, D. Staszak, S.G. Steadman, J.R. Stevens, R. Stock, M. Strikhanov, B. Stringfellow, A.A.P. Suaide, M.C. Suarez, N.L. Subba, M. Sumbera, X.M. Sun, Y. Sun, Z. Sun, B. Surrow, D.N. Svirida, T.J.M. Symons, A. Szanto de Toledo, J. Takahashi, A.H. Tang, Z. Tang, L.H. Tarini, T. Tarnowsky, D. Thein, J.H. Thomas, J. Tian, A.R. Timmins, D. Tlusty, M. Tokarev, S. Trentalange, R.E. Tribble, P. Tribedy, O.D. Tsai, T. Ullrich, D.G. Underwood, G. Van Buren, G. van Nieuwenhuizen, J.A. Vanfossen, R. Varma, G.M.S. Vasconcelos, A.N. Vasiliev, F. Videbæk, Y.P. Viyogi, S. Vokal, S.A. Voloshin, M. Wada, M. Walker, F. Wang, G. Wang, H. Wang, J.S. Wang, Q. Wang, X.L. Wang, Y. Wang, G. Webb, J.C. Webb, G.D. Westfall, C. Whitten, H. Wieman, S.W. Wissink, R. Witt, W. Witzke, Y.F. Wu, Z. Xiao, W. Xie, H. Xu, N. Xu, Q.H. Xu, W. Xu, Y. Xu, Z. Xu, L. Xue, Y. Yang, P. Yepes, K. Yip, I.-K. Yoo, M. Zawisza, H. Zbroszczyk, W. Zhan, J.B. Zhang, S. Zhang, W.M. Zhang, X.P. Zhang, Y. Zhang, Z.P. Zhang, F. Zhao, J. Zhao, C. Zhong, W. Zhou, X. Zhu, Y.H. Zhu, R. Zoulkarneev, and Y. Zoulkarneeva
Subjects: Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Shear viscosity, Observable, Collision, 01 natural sciences, Nuclear physics, Entropy density, 0103 physical sciences, Transverse momentum, Entropy (information theory), Atomic physics, Nuclear Experiment, 010306 general physics, Centrality
Abstract: We present first measurements of the evolution of the differential transverse momentum correlation function, C, with collision centrality in Au + Au interactions at root s(NN) = 200 GeV. This observable exhibits a strong dependence on collision centrality that is qualitatively similar to that of number correlations previously reported. We use the observed longitudinal broadening of the near-side peak of C with increasing centrality to estimate the ratio of the shear viscosity to entropy density, eta/s, of the matter formed in central Au + Au interactions. We obtain an upper limit estimate of eta/s that suggests that the produced medium has a small viscosity per unit entropy. (C) 2011 Elsevier B.V. All rights reserved.
Published: 2011

6. Energy and system size dependence of ϕ meson production in Cu+Cu and Au+Au collisions

Author: M. Shao, G. Van Buren, L. Kotchenda, S. Hepplemann, Y. Panebratsev, D. Grosnick, V. Kouchpil, M. Heinz, Lee Stuart Barnby, J. C. Dunlop, S. S. Shi, Jaroslav Bielcik, J. S. Wang, T. W. Ludlam, Zubayer Ahammed, M. J. LeVine, M. R. Dutta Mazumdar, O. V. Rogachevskiy, Rolf K. Reed, A. Ridiger, W. Christie, J. M. Nelson, L. K. Mangotra, W. M. Zhang, V. Ghazikhanian, W. A. Love, D. D. Koetke, G. Lin, Anik Gupta, Y. G. Ma, W. Peryt, Marek Bombara, C. Nepali, M. J. Skoby, E. Elhalhuli, Jifa Tian, R. Manweiler, Hongfang Liu, J. L. Drachenberg, T. S. McShane, W. T. Waggoner, S. H. Zhang, Andrey Vasiliev, Jorn Henning Putschke, A. V. Brandin, A. Feng, Jay Roberts, A. M. Poskanzer, B. E. Bonner, O. D. Tsai, David Jonathan Hofman, M. Elnimr, M. C. Cervantes, A. Kechechyan, Andre Mischke, A. Ogawa, H. F. Chen, Thomas A. Trainor, W. R. Edwards, J. H. Thomas, A. Stadnik, Peter Martin Jacobs, M. Krus, R. Cendejas, C-Q. Li, R. P. Scharenberg, Christina Markert, J. Takahashi, D. Kettler, H. S. Matis, R. Witt, D. Thein, Sevil Salur, S. Mioduszewski, J. W. Harris, Raimond Snellings, H. Okada, S. B. Nurushev, S. Baumgart, Matthew Walker, V. Yu Khodyrev, R. N. Singaraju, I. Selyuzhenkov, Vitaly Okorokov, W. W. Jacobs, G. S. Averichev, J. Lauret, F. Videbæk, Sukalyan Chattopadhyay, S. Bharadwaj, B. K. Srivastava, I. M. Vasilevski, W. J. Llope, J. L. Romero, K. Kajimoto, E. Finch, Y. Li, S. M. Guertin, M. Kopytine, R. Lednicky, P. Seyboth, E. J. Garcia-Solis, M. Tokarev, Boris Hippolyte, V. Emelianov, A. K. Bhati, D. Keane, Nikolai Smirnov, S. E. Vigdor, Christian Claude Kuhn, A. P. Meschanin, Bernd Surrow, M. S. Ganti, P. Yepes, A. H. Tang, Xiangming Sun, D. P. Mahapatra, R. S. Hollis, Janet Elizabeth Seger, A. M. Hoffman, A. Szanto de Toledo, J. Kapitan, J. Mitchell, L. G. Efimov, Y. J. Sun, S. Kabana, Y. P. Viyogi, A. R. Timmins, S. M. Dogra, D. Tlusty, Mirko Planinic, Pawan Kumar Netrakanti, M. Zawisza, H. M. Spinka, Morton Kaplan, X. Z. Cai, C-H. Lee, T. K. Nayak, S. U. Chung, T. D. S. Stanislaus, C. A. Gagliardi, R. Derradi de Souza, B. I. Abelev, M. Calderon De La Barca Sanchez, Y. N. Gorbunov, J. E. Draper, O. Catu, O. I. Mall, H. H. Wieman, H. Zhang, T. Pawlak, Y. P. Lu, V. Perevoztchikov, R. S. Longacre, Bedangadas Mohanty, A. Kocoloski, S. Dash, T. J. Humanic, M. A.C. Lamont, B. D. Anderson, I.A. Savin, I. Sakrejda, Debasish Das, Raghunath Sahoo, Marcelo Gameiro Munhoz, D. J. Prindle, M. J. M. Codrington, N. K. Pruthi, J. X. Zuo, Madan M. Aggarwal, Fuqiang Wang, A. M. Vander Molen, F. Liu, Sergey Voloshin, G. Igo, Christine Nattrass, Guo-Liang Ma, G. Eppley, X. Lin, Qian Yue, M. Bystersky, J. Bouchet, S. LaPointe, A. Gordon, B. V.K.S. Potukuchi, E. Hjort, Y. F. Wu, J. Pluta, J. Engelage, R. Millner, J. P. Coffin, Jie Liu, W. L. Zhan, Z. P. Zhang, R. Varma, Premomoy Ghosh, Yu A. Matulenko, B. Grube, B. S. Page, S. Timoshenko, A. S. Hirsch, J. C. Webb, P. Kravtsov, Frank Simon, Andrew Rose, Y. Zhao, D. P. Kikola, I. K. Yoo, P. Fachini, J. M. Landgraf, M. Pachr, Hanna Paulina Zbroszczyk, R. E. Tribble, C. L. Jones, R. D. Majka, K. S.F.F. Guimaraes, J. Sowinski, M. A. Lisa, M. Strikhanov, D. R. Beavis, Gerald W Hoffmann, Y. Fisyak, Y. Wang, R. F. Clarke, B. Stringfellow, D. R. Gangadharan, E. G. Judd, Ki-Seok Choi, J. Sandweiss, H. Z. Huang, S. Vokal, M. DePhillips, J. Schambach, Michal Sumbera, W. Guryn, A. A. P. Suaide, Anju Bhasin, S. Bueltmann, O. G. Grebenyuk, R. P. Redwine, Y. Bai, S. W. Wissink, Y. Zhang, J. G. Cramer, Nikola Poljak, William Axel Leight, K. Kang, A. Shabetai, G. Wang, Elena Bruna, J. Baudot, J. Joseph, S. R. Klein, T. Tarnowsky, N. L. Subba, A. Lebedev, J. Kiryluk, J. H. Chen, G. M.S. Vasconcelos, M. Sarsour, D. A. Morozov, J. Fedorisin, M. Botje, Q. H. Xu, A. G. Knospe, Y. Pandit, D. L. Olson, Z. J. Sun, T. P. Burton, N. Schmitz, E. Shahaliev, H. Bichsel, G. Odyniec, A. A. Derevschikov, A. L. Trattner, Y. Zoulkarneeva, C. Zhong, Russell Richard Betts, P. Djawotho, D. G. Underwood, Jana Bielcikova, P. Sorensen, X. H. Shi, X. F. Wang, W. He, Peter Graham Jones, David Lynn, Q. Wang, M. J. Russcher, T. J. Hallman, J. Cheng, T. J. M. Symons, L. Didenko, Jing Zhou, M. Sharma, B. Erazmus, N. G. Minaev, N. Xu, P. Filip, Neeraj Gupta, D. Cebra, M. Estienne, G. D. Westfall, Petr Jákl, C. A. Whitten, Feng Jin, L. Ruan, R. Corliss, S. J. Lindenbaum, Basanta Kumar Nandi, B. Biritz, C. Roy, C. De Silva, Y. Xu, P. Chaloupka, Z. J. Xu, S. Trentalange, A. Chikanian, V. N. Tram, Ermes Braidot, D. Arkhipkin, Adam Ryszard Kisiel, H. J. Crawford, A. Hamed, R. Fatemi, Michael Joseph Betancourt, K. Krueger, A. Iordanova, J. A. Vanfossen, J. Callner, M. Cherney, Thomas Michael Cormier, Lokesh Kumar, B. Haag, Zebo Tang, Z. Chajecki, C. Perkins, T. Peitzmann, P. Kurnadi, M. R. Cosentino, F. Benedosso, T. G. Dedovich, T. Sakuma, S. C. Phatak, V. Fine, Jake Y. Chen, F. Du, V. Rykov, L. V. Nogach, M. J. Ng, V. I. Kravtsov, E. P. Sichtermann, L. C. Bland, J. Balewski, Rashmi Raniwala, Claude Andre Pruneau, L. Liu, M. C. Suarez, T. Ullrich, R. Zoulkarneev, L. Eun, M. S. Daugherity, R. L. Ray, D. Staszak, J. Ulery, H. G. Ritter, T. Ljubicic, O. Barannikova, R. Bellwied, L. Gaillard, H. Caines, Sudhir Raniwala, M. Wada, X. L. Wang, S. Margetis, M. van Leeuwen, X. Dong, and S. K. Pal
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Meson, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Nuclear Theory, Hadron, Strangeness, Lambda baryon, Phi meson, 01 natural sciences, Nuclear physics, Baryon, Particle decay, Pair production, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics
Abstract: We study the beam-energy and system-size dependence of phi meson production (using the hadronic decay mode phi -> K(+) K(-)) by comparing the new results from Cu + Cu collisions and previously reported Au + Au collisions at root s(NN) = 62.4 and 200 GeV measured in the STAR experiment at RHIC. Data presented in this Letter are from mid-rapidity (vertical bar y vertical bar ) and net strangeness = 2 (Xi). The enhancement for phi mesons is observed to be higher at root s(NN) = 200 GeV compared to 62.4 GeV. These observations for the produced phi(s (s) over bar) mesons clearly suggest that, at these collision energies, the source of enhancement of strange hadrons is related to the formation of a dense partonic medium in high energy nucleus-nucleus collisions and cannot be alone due to canonical suppression of their production in smaller systems. (C) 2009 Elsevier B.V. All rights reserved.
Published: 2009

7. Energy dependence of π±, p and p¯ transverse momentum spectra for Au+Au collisions at sNN=62.4 and 200 GeV

Author: B.I. Abelev, M.M. Aggarwal, Z. Ahammed, B.D. Anderson, D. Arkhipkin, G.S. Averichev, Y. Bai, J. Balewski, O. Barannikova, L.S. Barnby, S. Baumgart, V.V. Belaga, A. Bellingeri-Laurikainen, R. Bellwied, F. Benedosso, R.R. Betts, S. Bharadwaj, A. Bhasin, A.K. Bhati, H. Bichsel, J. Bielcik, J. Bielcikova, A. Billmeier, L.C. Bland, S.-L. Blyth, M. Bombara, B.E. Bonner, M. Botje, J. Bouchet, A.V. Brandin, A. Bravar, T.P. Burton, M. Bystersky, R.V. Cadman, X.Z. Cai, H. Caines, M. Calderón de la Barca Sánchez, J. Callner, O. Catu, D. Cebra, Z. Chajecki, P. Chaloupka, S. Chattopadhyay, H.F. Chen, J.H. Chen, J.Y. Chen, J. Cheng, M. Cherney, A. Chikanian, H.A. Choi, W. Christie, S.U. Chung, J.P. Coffin, T.M. Cormier, M.R. Cosentino, J.G. Cramer, H.J. Crawford, D. Das, S. Dash, M. Daugherity, M.M. de Moura, T.G. Dedovich, M. DePhillips, A.A. Derevschikov, L. Didenko, T. Dietel, P. Djawotho, S.M. Dogra, X. Dong, J.L. Drachenberg, J.E. Draper, F. Du, V.B. Dunin, J.C. Dunlop, M.R. Dutta Mazumdar, V. Eckardt, W.R. Edwards, L.G. Efimov, V. Emelianov, J. Engelage, G. Eppley, B. Erazmus, M. Estienne, P. Fachini, R. Fatemi, J. Fedorisin, A. Feng, P. Filip, E. Finch, V. Fine, Y. Fisyak, K.S.F. Fornazier, J. Fu, C.A. Gagliardi, L. Gaillard, M.S. Ganti, E. Garcia-Solis, V. Ghazikhanian, P. Ghosh, Y.G. Gorbunov, H. Gos, O. Grebenyuk, D. Grosnick, S.M. Guertin, K.S.F.F. Guimaraes, N. Gupta, B. Haag, T.J. Hallman, A. Hamed, J.W. Harris, W. He, M. Heinz, T.W. Henry, S. Hepplemann, B. Hippolyte, A. Hirsch, E. Hjort, A.M. Hoffman, G.W. Hoffmann, D. Hofman, R. Hollis, M.J. Horner, H.Z. Huang, E.W. Hughes, T.J. Humanic, G. Igo, A. Iordanova, P. Jacobs, W.W. Jacobs, P. Jakl, F. Jia, H. Jiang, P.G. Jones, E.G. Judd, S. Kabana, K. Kang, J. Kapitan, M. Kaplan, D. Keane, A. Kechechyan, D. Kettler, V.Yu. Khodyrev, B.C. Kim, J. Kiryluk, A. Kisiel, E.M. Kislov, S.R. Klein, A.G. Knospe, A. Kocoloski, D.D. Koetke, T. Kollegger, M. Kopytine, L. Kotchenda, V. Kouchpil, K.L. Kowalik, M. Kramer, P. Kravtsov, V.I. Kravtsov, K. Krueger, C. Kuhn, A.I. Kulikov, A. Kumar, P. Kurnadi, A.A. Kuznetsov, M.A.C. Lamont, J.M. Landgraf, S. Lange, S. LaPointe, F. Laue, J. Lauret, A. Lebedev, R. Lednicky, C.-H. Lee, S. Lehocka, M.J. LeVine, C. Li, Q. Li, Y. Li, G. Lin, X. Lin, S.J. Lindenbaum, M.A. Lisa, F. Liu, H. Liu, J. Liu, L. Liu, T. Ljubicic, W.J. Llope, H. Long, R.S. Longacre, M. Lopez-Noriega, W.A. Love, Y. Lu, T. Ludlam, D. Lynn, G.L. Ma, J.G. Ma, Y.G. Ma, D.P. Mahapatra, R. Majka, L.K. Mangotra, R. Manweiler, S. Margetis, C. Markert, L. Martin, H.S. Matis, Yu.A. Matulenko, C.J. McClain, T.S. McShane, Yu. Melnick, A. Meschanin, J. Millane, M.L. Miller, N.G. Minaev, S. Mioduszewski, C. Mironov, A. Mischke, J. Mitchell, B. Mohanty, L. Molnar, D.A. Morozov, M.G. Munhoz, B.K. Nandi, C. Nattrass, T.K. Nayak, J.M. Nelson, C. Nepali, P.K. Netrakanti, V.A. Nikitin, L.V. Nogach, S.B. Nurushev, G. Odyniec, A. Ogawa, V. Okorokov, M. Oldenburg, D. Olson, M. Pachr, S.K. Pal, Y. Panebratsev, S.Y. Panitkin, A.I. Pavlinov, T. Pawlak, T. Peitzmann, V. Perevoztchikov, C. Perkins, W. Peryt, S.C. Phatak, M. Planinic, J. Pluta, N. Poljak, N. Porile, A.M. Poskanzer, M. Potekhin, E. Potrebenikova, B.V.K.S. Potukuchi, D. Prindle, C. Pruneau, J. Putschke, I.A. Qattan, R. Raniwala, S. Raniwala, R.L. Ray, S.V. Razin, J. Reinnarth, D. Relyea, A. Ridiger, H.G. Ritter, J.B. Roberts, O.V. Rogachevskiy, J.L. Romero, A. Rose, C. Roy, L. Ruan, M.J. Russcher, R. Sahoo, I. Sakrejda, T. Sakuma, S. Salur, J. Sandweiss, M. Sarsour, I. Savin, P.S. Sazhin, J. Schambach, R.P. Scharenberg, N. Schmitz, J. Seger, I. Selyuzhenkov, P. Seyboth, A. Shabetai, E. Shahaliev, M. Shao, M. Sharma, W.Q. Shen, S.S. Shimanskiy, E. Sichtermann, F. Simon, R.N. Singaraju, N. Smirnov, R. Snellings, P. Sorensen, J. Sowinski, J. Speltz, H.M. Spinka, B. Srivastava, A. Stadnik, T.D.S. Stanislaus, R. Stock, M. Strikhanov, B. Stringfellow, A.A.P. Suaide, M.C. Suarez, N.L. Subba, M. Sumbera, X.M. Sun, Z. Sun, B. Surrow, T.J.M. Symons, A. Szanto de Toledo, J. Takahashi, A.H. Tang, T. Tarnowsky, J.H. Thomas, A.R. Timmins, S. Timoshenko, M. Tokarev, T.A. Trainor, S. Trentalange, R.E. Tribble, O.D. Tsai, J. Ulery, T. Ullrich, D.G. Underwood, G. Van Buren, N. van der Kolk, M. van Leeuwen, A.M. Vander Molen, R. Varma, I.M. Vasilevski, A.N. Vasiliev, R. Vernet, S.E. Vigdor, Y.P. Viyogi, S. Vokal, S.A. Voloshin, W.T. Waggoner, F. Wang, G. Wang, J.S. Wang, X.L. Wang, Y. Wang, J.W. Watson, J.C. Webb, G.D. Westfall, A. Wetzler, C. Whitten Jr., H. Wieman, S.W. Wissink, R. Witt, J. Wu, N. Xu, Q.H. Xu, Z. Xu, P. Yepes, I.-K. Yoo, Q. Yue, V.I. Yurevich, W. Zhan, H. Zhang, W.M. Zhang, Y. Zhang, Z.P. Zhang, Y. Zhao, C. Zhong, R. Zoulkarneev, Y. Zoulkarneeva, A.N. Zubarev, and J.X. Zuo
Subjects: Nuclear reaction, Physics, Nuclear and High Energy Physics, Meson, Proton, 010308 nuclear & particles physics, Hadron, 01 natural sciences, Nuclear physics, Baryon, Pion, Antimatter, 0103 physical sciences, High Energy Physics::Experiment, Atomic physics, Nuclear Experiment, 010306 general physics, Jet quenching
Abstract: We study the energy dependense of the transverse momentum (PT) spectra for charged pions, protons and anti-protons for An + An collisions at root(NN)-N-s = 62.4 and 200 GeV. Data are presented at mid-rapidity (broken vertical bar y broken vertical bar 7 GeV/c) the modification is similar for both energies. The p/pi(+) and (p) over bar/pi(-) ratios for central collisions at root(NN)-N-s = 62.4 GeV peak at PT similar or equal to 2 GeV/c. In the PT range where recombination is expected to dominate, the p/pi(+) ratios at 62.4 GeV are larger than at 200 GeV, while the (p) over bar/pi(-) ratios are smaller. For PT > 2 GeV/c, the (p) over bar/pi(-) ratios at the two beam energies are independent of P-T and centrality indicating that the dependence of the (p) over bar/pi(-) ratio on P-T does not change between 62.4 and 200 GeV. These findings challenge various models incorporating jet quenching and/or constituent quark coalescence. (C) 2007 Elsevier B.V. All rights reserved.
Published: 2007

8. Hadronization geometry from net-charge angular correlations on momentum subspace (η,ϕ) in Au–Au collisions at sNN=130 GeV

Author: J. Adams, M.M. Aggarwal, Z. Ahammed, J. Amonett, B.D. Anderson, D. Arkhipkin, G.S. Averichev, S.K. Badyal, Y. Bai, J. Balewski, O. Barannikova, L.S. Barnby, J. Baudot, S. Bekele, V.V. Belaga, A. Bellingeri-Laurikainen, R. Bellwied, J. Berger, B.I. Bezverkhny, S. Bharadwaj, A. Bhasin, A.K. Bhati, V.S. Bhatia, H. Bichsel, J. Bielcik, J. Bielcikova, A. Billmeier, L.C. Bland, C.O. Blyth, S.-L. Blyth, B.E. Bonner, M. Botje, A. Boucham, J. Bouchet, A.V. Brandin, A. Bravar, M. Bystersky, R.V. Cadman, X.Z. Cai, H. Caines, M. Calderón de la Barca Sánchez, J. Castillo, O. Catu, D. Cebra, Z. Chajecki, P. Chaloupka, S. Chattopadhyay, H.F. Chen, J.H. Chen, Y. Chen, J. Cheng, M. Cherney, A. Chikanian, H.A. Choi, W. Christie, J.P. Coffin, T.M. Cormier, M.R. Cosentino, J.G. Cramer, H.J. Crawford, D. Das, S. Das, M. Daugherity, M.M. de Moura, T.G. Dedovich, M. DePhillips, A.A. Derevschikov, L. Didenko, T. Dietel, S.M. Dogra, W.J. Dong, X. Dong, J.E. Draper, F. Du, A.K. Dubey, V.B. Dunin, J.C. Dunlop, M.R. Dutta Mazumdar, V. Eckardt, W.R. Edwards, L.G. Efimov, V. Emelianov, J. Engelage, G. Eppley, B. Erazmus, M. Estienne, P. Fachini, J. Faivre, R. Fatemi, J. Fedorisin, K. Filimonov, P. Filip, E. Finch, V. Fine, Y. Fisyak, K.S.F. Fornazier, J. Fu, C.A. Gagliardi, L. Gaillard, J. Gans, M.S. Ganti, F. Geurts, V. Ghazikhanian, P. Ghosh, J.E. Gonzalez, H. Gos, O. Grachov, O. Grebenyuk, D. Grosnick, S.M. Guertin, Y. Guo, A. Gupta, N. Gupta, T.D. Gutierrez, T.J. Hallman, A. Hamed, D. Hardtke, J.W. Harris, M. Heinz, T.W. Henry, S. Hepplemann, B. Hippolyte, A. Hirsch, E. Hjort, G.W. Hoffmann, M.J. Horner, H.Z. Huang, S.L. Huang, E.W. Hughes, T.J. Humanic, G. Igo, A. Ishihara, P. Jacobs, W.W. Jacobs, M. Jedynak, H. Jiang, P.G. Jones, E.G. Judd, S. Kabana, K. Kang, M. Kaplan, D. Keane, A. Kechechyan, V.Yu. Khodyrev, B.C. Kim, J. Kiryluk, A. Kisiel, E.M. Kislov, J. Klay, S.R. Klein, D.D. Koetke, T. Kollegger, M. Kopytine, L. Kotchenda, K.L. Kowalik, M. Kramer, P. Kravtsov, V.I. Kravtsov, K. Krueger, C. Kuhn, A.I. Kulikov, A. Kumar, R.Kh. Kutuev, A.A. Kuznetsov, M.A.C. Lamont, J.M. Landgraf, S. Lange, F. Laue, J. Lauret, A. Lebedev, R. Lednicky, C.-H. Lee, S. Lehocka, M.J. LeVine, C. Li, Q. Li, Y. Li, G. Lin, S.J. Lindenbaum, M.A. Lisa, F. Liu, H. Liu, J. Liu, L. Liu, Q.J. Liu, Z. Liu, T. Ljubicic, W.J. Llope, H. Long, R.S. Longacre, M. Lopez-Noriega, W.A. Love, Y. Lu, T. Ludlam, D. Lynn, G.L. Ma, J.G. Ma, Y.G. Ma, D. Magestro, S. Mahajan, D.P. Mahapatra, R. Majka, L.K. Mangotra, R. Manweiler, S. Margetis, C. Markert, L. Martin, J.N. Marx, H.S. Matis, Yu.A. Matulenko, C.J. McClain, T.S. McShane, F. Meissner, Yu. Melnick, A. Meschanin, M.L. Miller, N.G. Minaev, C. Mironov, A. Mischke, D.K. Mishra, J. Mitchell, B. Mohanty, L. Molnar, C.F. Moore, D.A. Morozov, M.G. Munhoz, B.K. Nandi, S.K. Nayak, T.K. Nayak, J.M. Nelson, P.K. Netrakanti, V.A. Nikitin, L.V. Nogach, S.B. Nurushev, G. Odyniec, A. Ogawa, V. Okorokov, M. Oldenburg, D. Olson, S.K. Pal, Y. Panebratsev, S.Y. Panitkin, A.I. Pavlinov, T. Pawlak, T. Peitzmann, V. Perevoztchikov, C. Perkins, W. Peryt, V.A. Petrov, S.C. Phatak, R. Picha, M. Planinic, J. Pluta, N. Porile, J. Porter, A.M. Poskanzer, M. Potekhin, E. Potrebenikova, B.V.K.S. Potukuchi, D. Prindle, C. Pruneau, J. Putschke, G. Rakness, R. Raniwala, S. Raniwala, O. Ravel, R.L. Ray, S.V. Razin, D. Reichhold, J.G. Reid, J. Reinnarth, G. Renault, F. Retiere, A. Ridiger, H.G. Ritter, J.B. Roberts, O.V. Rogachevskiy, J.L. Romero, A. Rose, C. Roy, L. Ruan, M.J. Russcher, R. Sahoo, I. Sakrejda, S. Salur, J. Sandweiss, M. Sarsour, I. Savin, P.S. Sazhin, J. Schambach, R.P. Scharenberg, N. Schmitz, K. Schweda, J. Seger, P. Seyboth, E. Shahaliev, M. Shao, W. Shao, M. Sharma, W.Q. Shen, K.E. Shestermanov, S.S. Shimanskiy, E. Sichtermann, F. Simon, R.N. Singaraju, N. Smirnov, R. Snellings, G. Sood, P. Sorensen, J. Sowinski, J. Speltz, H.M. Spinka, B. Srivastava, A. Stadnik, T.D.S. Stanislaus, R. Stock, A. Stolpovsky, M. Strikhanov, B. Stringfellow, A.A.P. Suaide, E. Sugarbaker, M. Sumbera, B. Surrow, M. Swanger, T.J.M. Symons, A. Szanto de Toledo, A. Tai, J. Takahashi, A.H. Tang, T. Tarnowsky, D. Thein, J.H. Thomas, A.R. Timmins, S. Timoshenko, M. Tokarev, T.A. Trainor, S. Trentalange, R.E. Tribble, O.D. Tsai, J. Ulery, T. Ullrich, D.G. Underwood, G. Van Buren, N. van der Kolk, M. van Leeuwen, A.M. Vander Molen, R. Varma, I.M. Vasilevski, A.N. Vasiliev, R. Vernet, S.E. Vigdor, Y.P. Viyogi, S. Vokal, S.A. Voloshin, W.T. Waggoner, F. Wang, G. Wang, X.L. Wang, Y. Wang, Z.M. Wang, H. Ward, J.W. Watson, J.C. Webb, G.D. Westfall, A. Wetzler, C. Whitten, H. Wieman, S.W. Wissink, R. Witt, J. Wood, J. Wu, N. Xu, Z. Xu, Z.Z. Xu, E. Yamamoto, P. Yepes, I.-K. Yoo, V.I. Yurevich, I. Zborovsky, H. Zhang, W.M. Zhang, Y. Zhang, Z.P. Zhang, C. Zhong, R. Zoulkarneev, Y. Zoulkarneeva, A.N. Zubarev, and J.X. Zuo
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Hadron, Angular difference, Geometry, 01 natural sciences, Hadronization, Azimuth, Nuclear physics, Pseudorapidity, 0103 physical sciences, Transverse momentum, Beam direction, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Subspace topology
Abstract: We present the first measurements of charge-dependent correlations on angular difference variables η 1 − η 2 (pseudorapidity) and ϕ 1 − ϕ 2 (azimuth) for primary charged hadrons with transverse momentum 0.15 ⩽ p t ⩽ 2 GeV / c and | η | ⩽ 1.3 from Au–Au collisions at s N N = 130 GeV . We observe correlation structures not predicted by theory but consistent with evolution of hadron emission geometry with increasing centrality from one-dimensional fragmentation of color strings along the beam direction to an at least two-dimensional hadronization geometry along the beam and azimuth directions of a hadron-opaque bulk medium.
Published: 2006

9. Pion, kaon, proton and anti-proton transverse momentum distributions from p+p and d+Au collisions at sNN=200 GeV

Author: J. Adams, M.M. Aggarwal, Z. Ahammed, J. Amonett, B.D. Anderson, D. Arkhipkin, G.S. Averichev, S.K. Badyal, Y. Bai, J. Balewski, O. Barannikova, L.S. Barnby, J. Baudot, S. Bekele, V.V. Belaga, R. Bellwied, J. Berger, B.I. Bezverkhny, S. Bharadwaj, A. Bhasin, A.K. Bhati, V.S. Bhatia, H. Bichsel, J. Bielcik, J. Bielcikova, A. Billmeier, L.C. Bland, C.O. Blyth, B.E. Bonner, M. Botje, A. Boucham, A.V. Brandin, A. Bravar, M. Bystersky, R.V. Cadman, X.Z. Cai, H. Caines, M. Calderón de la Barca Sánchez, J. Castillo, O. Catu, D. Cebra, Z. Chajecki, P. Chaloupka, S. Chattopadhyay, H.F. Chen, Y. Chen, J. Cheng, M. Cherney, A. Chikanian, W. Christie, J.P. Coffin, T.M. Cormier, J.G. Cramer, H.J. Crawford, D. Das, S. Das, M.M. de Moura, A.A. Derevschikov, L. Didenko, T. Dietel, S.M. Dogra, W.J. Dong, X. Dong, J.E. Draper, F. Du, A.K. Dubey, V.B. Dunin, J.C. Dunlop, M.R. Dutta Mazumdar, V. Eckardt, W.R. Edwards, L.G. Efimov, V. Emelianov, J. Engelage, G. Eppley, B. Erazmus, M. Estienne, P. Fachini, J. Faivre, R. Fatemi, J. Fedorisin, K. Filimonov, P. Filip, E. Finch, V. Fine, Y. Fisyak, K. Fomenko, J. Fu, C.A. Gagliardi, L. Gaillard, J. Gans, M.S. Ganti, L. Gaudichet, F. Geurts, V. Ghazikhanian, P. Ghosh, J.E. Gonzalez, O. Grachov, O. Grebenyuk, D. Grosnick, S.M. Guertin, Y. Guo, A. Gupta, T.D. Gutierrez, T.J. Hallman, A. Hamed, D. Hardtke, J.W. Harris, M. Heinz, T.W. Henry, S. Hepplemann, B. Hippolyte, A. Hirsch, E. Hjort, G.W. Hoffmann, H.Z. Huang, S.L. Huang, E.W. Hughes, T.J. Humanic, G. Igo, A. Ishihara, P. Jacobs, W.W. Jacobs, M. Janik, H. Jiang, P.G. Jones, E.G. Judd, S. Kabana, K. Kang, M. Kaplan, D. Keane, V.Yu. Khodyrev, J. Kiryluk, A. Kisiel, E.M. Kislov, J. Klay, S.R. Klein, D.D. Koetke, T. Kollegger, M. Kopytine, L. Kotchenda, M. Kramer, P. Kravtsov, V.I. Kravtsov, K. Krueger, C. Kuhn, A.I. Kulikov, A. Kumar, R.Kh. Kutuev, A.A. Kuznetsov, M.A.C. Lamont, J.M. Landgraf, S. Lange, F. Laue, J. Lauret, A. Lebedev, R. Lednicky, S. Lehocka, M.J. LeVine, C. Li, Q. Li, Y. Li, G. Lin, S.J. Lindenbaum, M.A. Lisa, F. Liu, L. Liu, Q.J. Liu, Z. Liu, T. Ljubicic, W.J. Llope, H. Long, R.S. Longacre, M. Lopez-Noriega, W.A. Love, Y. Lu, T. Ludlam, D. Lynn, G.L. Ma, J.G. Ma, Y.G. Ma, D. Magestro, S. Mahajan, D.P. Mahapatra, R. Majka, L.K. Mangotra, R. Manweiler, S. Margetis, C. Markert, L. Martin, J.N. Marx, H.S. Matis, Yu.A. Matulenko, C.J. McClain, T.S. McShane, F. Meissner, Yu. Melnick, A. Meschanin, M.L. Miller, N.G. Minaev, C. Mironov, A. Mischke, D.K. Mishra, J. Mitchell, B. Mohanty, L. Molnar, C.F. Moore, D.A. Morozov, M.G. Munhoz, B.K. Nandi, S.K. Nayak, T.K. Nayak, J.M. Nelson, P.K. Netrakanti, V.A. Nikitin, L.V. Nogach, S.B. Nurushev, G. Odyniec, A. Ogawa, V. Okorokov, M. Oldenburg, D. Olson, S.K. Pal, Y. Panebratsev, S.Y. Panitkin, A.I. Pavlinov, T. Pawlak, T. Peitzmann, V. Perevoztchikov, C. Perkins, W. Peryt, V.A. Petrov, S.C. Phatak, R. Picha, M. Planinic, J. Pluta, N. Porile, J. Porter, A.M. Poskanzer, M. Potekhin, E. Potrebenikova, B.V.K.S. Potukuchi, D. Prindle, C. Pruneau, J. Putschke, G. Rakness, R. Raniwala, S. Raniwala, O. Ravel, R.L. Ray, S.V. Razin, D. Reichhold, J.G. Reid, G. Renault, F. Retiere, A. Ridiger, H.G. Ritter, J.B. Roberts, O.V. Rogachevskiy, J.L. Romero, A. Rose, C. Roy, L. Ruan, R. Sahoo, I. Sakrejda, S. Salur, J. Sandweiss, M. Sarsour, I. Savin, P.S. Sazhin, J. Schambach, R.P. Scharenberg, N. Schmitz, K. Schweda, J. Seger, P. Seyboth, E. Shahaliev, M. Shao, W. Shao, M. Sharma, W.Q. Shen, K.E. Shestermanov, S.S. Shimanskiy, E. Sichtermann, F. Simon, R.N. Singaraju, G. Skoro, N. Smirnov, R. Snellings, G. Sood, P. Sorensen, J. Sowinski, J. Speltz, H.M. Spinka, B. Srivastava, A. Stadnik, T.D.S. Stanislaus, R. Stock, A. Stolpovsky, M. Strikhanov, B. Stringfellow, A.A.P. Suaide, E. Sugarbaker, C. Suire, M. Sumbera, B. Surrow, T.J.M. Symons, A. Szanto de Toledo, P. Szarwas, A. Tai, J. Takahashi, A.H. Tang, T. Tarnowsky, D. Thein, J.H. Thomas, S. Timoshenko, M. Tokarev, T.A. Trainor, S. Trentalange, R.E. Tribble, O.D. Tsai, J. Ulery, T. Ullrich, D.G. Underwood, A. Urkinbaev, G. Van Buren, M. van Leeuwen, A.M. Vander Molen, R. Varma, I.M. Vasilevski, A.N. Vasiliev, R. Vernet, S.E. Vigdor, Y.P. Viyogi, S. Vokal, S.A. Voloshin, M. Vznuzdaev, W.T. Waggoner, F. Wang, G. Wang, X.L. Wang, Y. Wang, Z.M. Wang, H. Ward, J.W. Watson, J.C. Webb, R. Wells, G.D. Westfall, A. Wetzler, C. Whitten, H. Wieman, S.W. Wissink, R. Witt, J. Wood, J. Wu, N. Xu, Z. Xu, Z.Z. Xu, E. Yamamoto, P. Yepes, V.I. Yurevich, Y.V. Zanevsky, H. Zhang, W.M. Zhang, Z.P. Zhang, R. Zoulkarneev, Y. Zoulkarneeva, and A.N. Zubarev
Subjects: Quantum chromodynamics, Physics, Nuclear and High Energy Physics, Proton, 010308 nuclear & particles physics, Hadron, 7. Clean energy, 01 natural sciences, Particle identification, Baryon, Nuclear physics, Pion, Antiproton, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Bar (unit)
Abstract: Identified mid-rapidity particle spectra of pi(+/-), K+/-, and p((p) over bar) from 200 GeV p + p and d + Au collisions are reported. A time-of-flight detector based on multi-gap resistive plate chamber technology is used for particle identification. The particle-species dependence of the Cronin effect is observed to be significantly smaller than that at lower energies. The ratio of the nuclear modification factor (R-dAu) between protons (p + (p) over bar) and charged hadrons (h) in the transverse momentum range 1.2 < p(T) < 3.0 GeV/c is measured to be 1.19 +/- 0.05(stat) +/- 0.03(syst) in minimum-bias collisions and shows little centrality dependence. The yield ratio of (p + (p) over bar)/h in minimum-bias d + Au collisions is found to be a factor of 2 lower than that in Au + Au collisions, indicating that the Cronin effect alone is not enough to account for the relative baryon enhancement observed in heavy ion collisions at RHIC. (c) 2005 Elsevier B.V. All rights reserved.
Published: 2005

10. ϕ meson production in Au+Au and p+p collisions at sNN=200GeV

Author: W. Christie, A. H. Tang, A. I. Kulikov, Guy Paic, A. Chikanian, S. S. Shimanskii, W. M. Zhang, E. Sugarbaker, G. Rakness, Andrey Vasiliev, M. Shao, D. K. Mishra, A. Boucham, R. N. Singaraju, A. P. Meschanin, Janet Elizabeth Seger, F. Meissner, E. G. Judd, D. Arkhipkin, E. Yamamoto, S. Bekele, M. Heinz, Lee Stuart Barnby, Manish Sharma, J. Balewski, D. A. Morozov, Marie Germain, Rashmi Raniwala, Claude Andre Pruneau, A. Ishihara, Michal Sumbera, G. Renault, C. Suire, T. Ullrich, A. S. Hirsch, R. Wells, S. V. Razin, M. R. Dutta Majumdar, A. Lebedev, L. Gaudichet, J. Kiryluk, A. Ridiger, V. Faine, A. N. Zubarev, N. Schmitz, Thorsten Sven Kollegger, E. Shahaliev, H. Jiang, M. M. de Moura, J. C. Webb, P. Kravtsov, C. Adler, R. Zoulkarneev, J. Castillo, S. W. Wissink, Z. Xu, A. Stolpovsky, S. Heppelmann, D. Flierl, W. A. Love, Sergey Voloshin, M. Botje, Jay Roberts, B. E. Bonner, Adam Ryszard Kisiel, Vladimir Petrov, C-Q. Li, Basanta Kumar Nandi, K. J. Foley, B. D. Anderson, L. Martin, P. Seyboth, Jeffrey G. Reid, S. Kabana, I. Sakrejda, J. Sowinski, M. Vznuzdaev, Anik Gupta, R. V. Cadman, R. S. Longacre, L. Kotchenda, D. D. Koetke, P. Fachini, R. P. Scharenberg, O. D. Tsai, C. L. Kunz, J. E. Draper, Jianhong Wu, Hao-Ze Chen, C. J. McClain, M. Calderon De La Barca Sanchez, H. S. Matis, H. J. Crawford, C. F. Moore, S. P. Chernenko, Z. P. Zhaomin, M. L. Miller, Frank Jm Geurts, J. P. Coffin, W. J. Llope, Q. J. Liu, J. Baudot, Debasish Das, Raghunath Sahoo, M. Guedon, A. M. VanderMolen, C. A. Whitten, J. H. Thomas, J. E. Gonzalez, Bedangadas Mohanty, O. V. Rogachevski, Marcelo Gameiro Munhoz, D. J. Prindle, R. L. Ray, E. Potrebenikova, P. Szarwas, G. Igo, Vitaly Okorokov, M. J. Mora-Corral, W. W. Jacobs, J. Lauret, G. Eppley, D. Reichhold, Y. V. Zanevski, Xu Cai, C. Roy, J. Zoulkarneeva, Julien Faivre, A. K. Dubey, A. I. Pavlinov, S. Mahajan, B. Yuting, W. T. Waggoner, F. Liu, M. B. Tonjes, Q. Li, A. V. Brandin, Souvik Das, Pawan Kumar Netrakanti, R. Witt, R. Fatemi, S. Lange, L. Molnar, V. Morozov, J. Pluta, Peter Martin Jacobs, S. R. Klein, S. J. Lindenbaum, A. Klyachko, H. Zhang, V. Yu Khodyrev, T. Ljubicic, K. Schweda, S. M. Guertin, Alexandre Alarcon Do Passo Suaide, O. Barannikova, D. L. Olson, S. E. Vigdor, C. A. Gagliardi, H. Caines, Sudhir Raniwala, N.D. Gagunashvili, N. Xu, M. Lopez-Noriega, H. Ward, P. Filip, T. D. Gutierrez, K. Krueger, B. K. Srivastava, I. M. Vasilevski, Christian Claude Kuhn, A. Rose, R. E. Tribble, Madan M. Aggarwal, Yaguo Wang, D. Hardtke, Fuqiang Wang, R. D. Majka, Sevil Salur, P. Chaloupka, B. Lasiuk, M. A. C. Lamont, Sukalyan Chattopadhyay, D. P. Mahapatra, J. Gans, Z. P. Zizong, S. Bhardwaj, B. Surrow, T. Dietel, A. A. Derevschikov, G. D. Westfall, S. B. Nurushev, Z. Milosevich, Mirko Planinic, M. S. Ganti, Boris Hippolyte, Z. M. Wang, M. Oldenburg, Gerald W Hoffmann, M. A. Lisa, S. Margetis, J. Schambach, Yu Chen, C. Perkins, Malgorzata Anna Janik, P. Sorensen, H. Long, W. J. Dong, C. Mironov, R. Picha, Joseph Adams, Y. Fisyak, T. Peitzmann, V. Perevoztchikov, K. Filimonov, E. W. Hughes, J. C. Dunlop, Ian Johnson, G. Van Buren, X. L. Wang, Y. Panebratsev, G. S. Averichev, D. Grosnick, G. Rai, V. I. Yurevich, T. W. Henry, V. V. Belaga, Zubayer Ahammed, M. J. LeVine, Sergey Panitkin, B. I. Bezverkhny, D. Magestro, O. A. Grachov, X. Dong, Sergey Timoshenko, M. Cherney, Z. Z. Xu, J. W. Harris, Frank Simon, A. Bravar, G. Wang, S. K. Badyal, T. D. S. Stanislaus, S. K. Pal, T. W. Ludlam, Peter Graham Jones, R. Lednický, V. A. Nikitin, J. M. Nelson, F. Retiere, Thomas Michael Cormier, G. Skoro, C. Struck, J. Takahashi, J. Putschke, N. G. Minaev, L. S. Schroeder, K. E. Shestermanov, W. Peryt, B. Erazmus, A. Tai, G. Sood, L. Didenko, J. W. Watson, J. Amonett, A. Ogawa, G. J. Kunde, P. Yepes, V. Eckardt, J. Klay, B. V.K.S. Potukuchi, V. Emelianov, A. K. Bhati, D. Keane, S. Gronstal, Shengli Huang, Thomas A. Trainor, Yu-Gang Ma, Nikolai Smirnov, R. Stock, J. Mitchell, L. G. Efimov, T. K. Nayak, L. K. Mangotra, D. Cebra, S. Trentalange, M. Estienne, R. Manweiler, Yu Melnick, H. Bichsel, G. Odyniec, H. M. Spinka, M. Potekhin, David Lynn, H. G. Ritter, A. Hamed, J. G. Ma, A. M. Poskanzer, R. Bellwied, Andre Mischke, D. Thein, L. C. Bland, M. Kopytine, J. Fu, M. Tokarev, H. H. Wieman, A. A. Kuznetsov, L. Liu, J. Engelage, John N. Wood, Premomoy Ghosh, J. M. Landgraf, Olivier Ravel, Z. Liu, M. Strikhanov, P.A. Zolnierczuk, Christina Markert, J. Sandweiss, A. Billmeier, J. G. Cramer, C. O. Blyth, M. Kramer, B. Norman, T. J. Humanic, I.A. Savin, N. T. Porile, R. Varma, Yu A. Matulenko, M. Horsley, B. Stringfellow, T. S. McShane, J. N. Marx, Y. P. Viyogi, H. Z. Huang, A. Kumar, F. Du, Alexander Kovalenko, L. V. Nogach, V. I. Kravtsov, Zhenyu Zhang, W. Shao, R.J.M. Snellings, S. C. Phatak, R. Willson, D. G. Underwood, Lijuan Ruan, T. J. Hallman, Morton Kaplan, T. J. M. Symons, V. Ghazikhanian, J. L. Romero, E. Finch, E. Hjort, J. Carroll, S. K. Nayak, F. Laue, A. Szanto de Toledo, T. Pawlak, J. Porter, R.Kh. Kutuev, J. Berger, O. G. Grebenyuk, and V. B. Dunin
Subjects: Physics, Coalescence (physics), Nuclear and High Energy Physics, Meson production, 010308 nuclear & particles physics, Phi meson, 7. Clean energy, 01 natural sciences, Central region, Spectral line, Nuclear physics, 0103 physical sciences, Transverse momentum, Atomic physics, Nuclear Experiment, 010306 general physics
Abstract: We report the STAR measurement of ϕ meson production in Au + Au and p + p collisions at s N N = 200 GeV . Using the event mixing technique, the ϕ spectra and yields are obtained at mid-rapidity for five centrality bins in Au + Au collisions and for non-singly-diffractive p + p collisions. It is found that the ϕ transverse momentum distributions from Au + Au collisions are better fitted with a single-exponential while the p + p spectrum is better described by a double-exponential distribution. The measured nuclear modification factors indicate that ϕ production in central Au + Au collisions is suppressed relative to peripheral collisions when scaled by the number of binary collisions ( 〈 N bin 〉 ) . The systematics of 〈 p t 〉 versus centrality and the constant ϕ / K − ratio versus beam species, centrality, and collision energy rule out kaon coalescence as the dominant mechanism for ϕ production.
Published: 2005

11. An update from STAR—using strangeness to probe relativistic heavy ion collisions

Author: V. V. Belaga, V. Grigoriev, Z. Xu, Sergey Voloshin, P. Sorensen, R. L. Ray, E. Potrebenikova, M.A. Kramer, R. V. Cadman, Peter Graham Jones, K. J. Foley, F. Laue, A. Szanto de Toledo, T. Ljubicic, Jianhong Wu, H. Caines, E. Sugarbaker, T. Pawlak, V. L. Rykov, Frank Jm Geurts, L. Didenko, G. Eppley, J. Porter, I. Sakrejda, J. Balewski, J. Baudot, Claude Andre Pruneau, J. Pluta, R. Willson, D. G. Underwood, F. Meissner, A. Stolpovsky, R. Lednický, V. A. Nikitin, T. Ullrich, Y. V. Zanevski, R. Zoulkarneev, L. Kotchenda, S. Kabana, K. E. Shestermanov, Jinghui Yang, A. Lebedev, Q. J. Liu, M. M. de Moura, K. Schweda, T. J. Hallman, T. J. M. Symons, S. V. Razin, L. Gaudichet, J. Kiryluk, M. L. Miller, B. Choi, R. E. Tribble, R. S. Longacre, H. Bichsel, M. Castro, Jay Roberts, S. R. Klein, C. Struck, O. Barannikova, D. L. Olson, Gerald W Hoffmann, Yu-Gang Ma, A. Tai, P. Szarwas, J. Takahashi, J. Putschke, G. Odyniec, D. Thein, Alexander Kovalenko, O. A. Grachov, X. Dong, C. L. Kunz, C. F. Moore, J. W. Watson, A. Bravar, Joseph Adams, A. A. Derevschikov, L. V. Nogach, A. H. Tang, R.Kh. Kutuev, J. Berger, S. P. Chernenko, A. Ogawa, M. Kopytine, J. Amonett, W. J. Llope, X. L. Wang, Julien Faivre, J. Klay, V. B. Dunin, A. V. Brandin, Zhongyukun Xu, Thomas A. Trainor, A. Ridiger, Thorsten Sven Kollegger, D. Reichhold, D. Magestro, L. Ruan, V. Trofimov, M. Tokarev, A. Rose, V. Emelianov, A. I. Pavlinov, D. Keane, T. J. Humanic, R. Witt, F. Liu, M. B. Tonjes, S. Heppelmann, D. Flierl, Matthew J. Anderson, Marie Germain, R. P. Scharenberg, S. M. Guertin, S L Huang, Alexandre Alarcon Do Passo Suaide, B. Lasiuk, J. H. Thomas, H. S. Matis, L. Martin, David Lynn, H. Long, Nikolai Smirnov, R. Stock, J. Mitchell, L. G. Efimov, G. Skoro, S. E. Vigdor, G. Igo, J. Zoulkarneeva, Christian Claude Kuhn, V. Morozov, I.A. Savin, W. W. Jacobs, D. D. Koetke, V. Petrov, J. E. Draper, A. N. Zubarev, C. A. Gagliardi, E. Hjort, B. E. Bonner, J. Lauret, B. D. Anderson, O. D. Tsai, D. Hardtke, J. Fu, B. K. Srivastava, Yu Chen, R. D. Majka, N. T. Porile, M. Messer, M.M. Corral, G. S. Averichev, H. H. Wieman, J. Sowinski, S. Stanislaus, J. Marx, Z. M. Wang, M. A. Vasiliev, T. Herston, B. Surrow, S. Margetis, J. Schambach, P. Fachini, J. P. Coffin, O. V. Rogachevski, J. Gans, Boris Hippolyte, H. Ward, W. Christie, J. C. Dunlop, A. I. Kulikov, R. Manweiler, J. Carroll, P. Seyboth, Masashi Kaneta, Fuqiang Wang, H. M. Spinka, Sevil Salur, M. Oldenburg, T. Dietel, W. M. Zhang, Andrey Vasiliev, A. M. Poskanzer, Zubayer Ahammed, J. G. Ma, Y. Panebratsev, M. Shao, M. J. LeVine, V. Ghazikhanian, D. Grosnick, S. Lange, G. Rai, Janet Elizabeth Seger, A. A. Kuznetsov, V. I. Yurevich, J. L. Romero, C. P. Lansdell, Yu A. Matulenko, Frank Simon, S.J. Lindenbaum, L. S. Schroeder, E. Yamamoto, E. Finch, T W Henry, I. Zborovský, R.J.M. Snellings, B. Erazmus, R. Wells, A. P. Meschanin, M. Heinz, Lee Stuart Barnby, F. Retiere, Y. Fisyak, M. Horsley, C Whitten, Ian Johnson, N. G. Minaev, N. Xu, P. Filip, C Li, B. Stringfellow, D. Cebra, N. Schmitz, G. D. Westfall, E. Shahaliev, S. Trentalange, W. A. Love, Malgorzata Anna Janik, Yu Melnick, Marcelo Gameiro Munhoz, D. J. Prindle, H. Zhang, E. J. Stephenson, M. A. Lisa, A. Billmeier, J. G. Cramer, R. Fatemi, K. Krueger, M. Cherney, Thomas Michael Cormier, T. S. McShane, P. Nevski, J. E. Gonzalez, M. Lopez-Noriega, Adam Ryszard Kisiel, Michal Sumbera, H. J. Crawford, A. Ishihara, G. Renault, J. Engelage, C. Suire, V. Faine, John N. Wood, J. Castillo, S. W. Wissink, J. M. Landgraf, V. A. Okorokov, M. Strikhanov, G. Rakness, M. Guedon, A. M. VanderMolen, Guy Paic, E. G. Judd, A. Chikanian, S. S. Shimanskii, P.A. Zolnierczuk, Christina Markert, J. Sandweiss, Z. Liu, A. Boucham, D. Arkhipkin, S. Bekele, C. Roy, C. O. Blyth, A. Klyachko, Vladimir Tikhomirov, P. Chaloupka, B. Norman, G. Van Buren, T. W. Ludlam, J. M. Nelson, W. Peryt, H. G. Ritter, H. Z. Huang, Morton Kaplan, X. Z. Cai, R. Bellwied, A. S. Konstantinov, L. C. Bland, L. Liu, V. M. Leontiev, D. Seliverstov, A. Schüttauf, Olivier Ravel, A. S. Hirsch, Peter Martin Jacobs, P. Kravtsov, C. Adler, M. A. C. Lamont, S. B. Nurushev, Z. Milosevich, Jeffrey G. Reid, Hao-Ze Chen, M. Calderon De La Barca Sanchez, Subhasis Chattopadhyay, Q. Li, J. W. Harris, N.D. Gagunashvili, A Cardenas, Z P Zhang, E. Gushin, G. J. Kunde, P. Yepes, V. Eckardt, V. Perevoztchikov, K. Filimonov, Sergey Panitkin, S. U. Pandey, and A. E. Yakutin
Subjects: Nuclear reaction, Physics, Nuclear and High Energy Physics, Particle physics, Strange quark, media_common.quotation_subject, Hadron, Elementary particle, Kinematics, Decoupling (cosmology), Strangeness, Asymmetry, Nuclear physics, Nuclear Experiment, media_common
Abstract: An overview of the strangeness measurements made by the STAR collaboration at RHIC for Au-Au collisions at √s NN = 130 and 200 GeV plus p-p collisions at √s NN = 200 GeV is presented. A wealth of information has been generated on the kinematics and scale of strange particle production by this experiment. When viewed in combination a picture emerges of particles demonstrating a surprisingly high degree of collective motion, suggestive of strong internal pressure within the source which builds up rapidly. The non-resonance yields are consistent with statistical hadron formation. Although there appears to be a rapid decoupling of the source, resonance particle measurements show signs of rescattering during the hadronic phase. Meanwhile the observed suppression of high momentum probes and their large azimuthal asymmetry indicate that this hot dense matter has significant interactions with particles moving through it.
Published: 2003

12. Strange antiparticle-to-particle ratios at mid-rapidity in =130 GeV Au+Au collisions

Author: M. Calderon De La Barca Sanchez, A. Lebedev, R. V. Cadman, Vitaly Okorokov, Frank Jm Geurts, Q. Li, Adam Ryszard Kisiel, T. J. Humanic, H. J. Crawford, I.A. Savin, N. T. Porile, R. Fatemi, Y. Panebratsev, V. Trofimov, C. A. Gagliardi, Q. J. Liu, C. A. Whitten, K. Krueger, G. Rai, Yu A. Matulenko, T. Herston, Fuqiang Wang, C. E. Allgower, M. Horsley, B. Stringfellow, S. Lange, S. J. Lindenbaum, N. Xu, J. Balewski, M. Cherney, H. G. Ritter, Thomas Michael Cormier, Claude Andre Pruneau, W. Christie, G. D. Westfall, A. Billmeier, P. Nevski, J. W. Harris, Malgorzata Anna Janik, V. I. Yurevich, C. Struck, J. Takahashi, J. Putschke, J. W. Watson, A. I. Kulikov, A. Ridiger, Thorsten Sven Kollegger, J. G. Cramer, K. Schweda, T. Ullrich, J. H. Thomas, A. S. Hirsch, Frank Simon, C. Roy, P. Kravtsov, Masashi Kaneta, A. M. Poskanzer, A. Ogawa, R. Bellwied, Thomas A. Trainor, E. Yamamoto, C. Adler, R. Zoulkarneev, A. Stolpovsky, L. Kotchenda, B. Erazmus, A. S. Konstantinov, A. Tai, R. S. Longacre, W. M. Zhang, Andrey Vasiliev, R. Lednický, V. A. Nikitin, Joseph Adams, J. Amonett, V. Grigoriev, T. Dietel, K. E. Shestermanov, R. L. Ray, M. Kramer, A. Klyachko, E. Potrebenikova, M. Heinz, Lee Stuart Barnby, J. Klay, E. Gushin, G. J. Kunde, M. Castro, M. Oldenburg, P. Yepes, V. Eckardt, E. Hjort, D. Magestro, B. Choi, Jeffrey G. Reid, D. Cebra, T. S. McShane, V. Emelianov, Vladimir Tikhomirov, D. Keane, S. Heppelmann, D. Flierl, A. H. Tang, F. Retiere, T. Ljubicic, Nikolai Smirnov, Yu Melnick, N. G. Minaev, Z. J. Xu, R. Stock, J. Mitchell, H. Caines, W. A. Love, L. G. Efimov, Marcelo Gameiro Munhoz, Alexander Kovalenko, L. V. Nogach, Vladimir Petrov, R. P. Scharenberg, S. P. Chernenko, Yu. Ivanshin, V. L. Rykov, Janet Elizabeth Seger, D. J. Prindle, W. J. Llope, G. S. Averichev, L. Martin, H. Zhang, J. Carroll, S. Trentalange, Guy Paic, A. Chikanian, S. S. Shimanskii, G. Igo, E. J. Stephenson, J. N. Marx, B. E. Bonner, Marie Germain, A. Cardenas, O. D. Tsai, H. S. Matis, G. Skoro, G. Rakness, W. W. Jacobs, B. D. Anderson, M. A. Lisa, A. A.P. Suaide, S. M. Guertin, J. E. Draper, Julien Faivre, A. Rose, J. Lauret, L. C. Bland, A. Boucham, B. Lasiuk, V. Ghazikhanian, A. V. Brandin, H. Bichsel, Yu Chen, W. S. Deng, H. Ward, V. Perevoztchikov, G. Odyniec, K. Filimonov, David Lynn, S. E. Vigdor, Christian Claude Kuhn, A. A. Kuznetsov, L. Liu, V. M. Leontiev, Olivier Ravel, Sergey Panitkin, M. Planinic, S. Bekele, J. P. Coffin, O. V. Rogachevski, D. Reichhold, A. I. Pavlinov, F. Liu, M. B. Tonjes, G. Eppley, Subhasis Chattopadhyay, E. G. Judd, A. N. Zubarev, Matthew J. Anderson, E. Sugarbaker, H. Z. Huang, J. Pluta, J. L. Romero, E. Finch, A. Ishihara, V. Morozov, M. Messer, Sevil Salur, Morton Kaplan, S. Margetis, O. A. Grachov, J. G. Ma, B. Surrow, S. U. Pandey, F. Meissner, A. E. Yakutin, C. P. Lansdell, R. Wells, R.J.M. Snellings, P. Seyboth, D. Hardtke, R. D. Majka, Sergey Voloshin, K. J. Foley, G. Van Buren, A. P. Meschanin, N.D. Gagunashvili, A. Bravar, J. Sowinski, R. K. Kutuev, P. Fachini, R. E. Tribble, J. Schambach, Gerald W Hoffmann, H. M. Spinka, T. W. Ludlam, T. W. Henry, J. Baudot, I. Sakrejda, J. M. Nelson, Y. V. Zanevski, N. Schmitz, E. Shahaliev, I. Zborovský, W. Peryt, M. Lopez-Noriega, M. M. de Moura, Y. Fisyak, Ian Johnson, M. L. Miller, D. Seliverstov, A. Schüttauf, M. Guedon, A. M. VanderMolen, Michael A. Thompson, P. Szarwas, V. V. Belaga, Peter Martin Jacobs, Michal Sumbera, G. Renault, M. A. C. Lamont, S. B. Nurushev, Z. Milosevich, C. Suire, P. Chaloupka, V. Faine, J. Castillo, P. Sorensen, S. W. Wissink, Peter Graham Jones, L. Didenko, Jinghui Yang, S. R. Klein, O. Barannikova, D. L. Olson, A. A. Derevschikov, D. Thein, H. Long, M. Kopytine, M. Tokarev, M.M. Corral, H. H. Wieman, S. V. Razin, L. Gaudichet, J. Kiryluk, Jay Roberts, C. L. Kunz, F. Laue, A. Szanto de Toledo, C. F. Moore, T. Pawlak, J. C. Dunlop, J. Porter, Zubayer Ahammed, M. J. LeVine, R. Willson, D. G. Underwood, L. S. Schroeder, R. Witt, J. Fu, B. K. Srivastava, I. M. Vasilevski, T. J. Hallman, J. Gans, T. J. M. Symons, Boris Hippolyte, J. Berger, V. B. Dunin, C. O. Blyth, B. Norman, J. Engelage, John N. Wood, J. M. Landgraf, M. Strikhanov, Christina Markert, J. Sandweiss, and Z. Liu
Subjects: Quark, Physics, Nuclear and High Energy Physics, Strange quark, Antiparticle, Particle physics, STAR, Hyperon, Strangeness, Baryochemical potential, Nuclear physics, Baryon, Relativistic heavy-ion collisions, Antibaryon-to-baryon ratios, Rapidity, Nucleon
Abstract: Values of the ratios in the mid-rapidity yields of Λ / Λ =0.71±0.01( stat. )±0.04( sys. ) , Ξ + / Ξ − =0.83±0.04( stat. )±0.05( sys. ) , Ω + / Ω − =0.95±0.15( stat. )±0.05( sys. ) and K + /K − =1.092±0.023(combined) were obtained in central s NN =130 GeV Au+Au collisions using the STAR detector. The ratios indicate that a fraction of the net-baryon number from the initial system is present in the excess of hyperons over antihyperons at mid-rapidity. The trend in the progression of the baryon ratios, with increasing strange quark content, is similar to that observed in heavy-ion collisions at lower energies. The value of these ratios may be related to the charged kaon ratio in the framework of simple quark-counting and thermal models.
Published: 2003

13. Strangeness in Au$plus$Au collisions at $\surd$sNN $equal$ 130 GeV observed with the STAR detector

Author: Y. Fisyak, A. Ogawa, Ian Johnson, Christophe Pierre Suire, A. H. Tang, P. Seyboth, Guy Paic, A. Chikanian, S. S. Shimanskii, A. Ridiger, K. Schweda, G. Eppley, A. Stolpovsky, H. Hümmler, Marie Germain, T. S. McShane, M. Šumbera, J. Pluta, V. Ghazikhanian, R. S. Longacre, Michael A. Thompson, L. Kotchenda, C. Struck, A. A.P. Suaide, S. Heppelmann, D. Flierl, A. I. Pavlinov, B. E. Bonner, J. L. Romero, O. D. Tsai, L. Lakehal-Ayat, G. Van Buren, J. Takahashi, J. W. Watson, L. Martin, F. Liu, M. B. Tonjes, A. N. Zubarev, G. Igo, A. Boucham, R. E. Tribble, Gerald W Hoffmann, S. Lee Barnby, M. Castro, Torre Wenaus, R. K. Kutuev, V. Morozov, M. Messer, V. Grigoriev, Q. Li, J. Grabski, K. Krueger, V. S. Shvetcov, Q. J. Liu, C. A. Whitten, Thomas A. Trainor, J. Berger, J. E. Draper, V. Faine, R. L. Ray, J. Castillo, E. Potrebenikova, J. M. Nelson, D. Hardtke, P. Fachini, A. M. van der Molen, S. Bekele, W. Peryt, R. D. Majka, R. V. Cadman, S. W. Wissink, E. Finch, Frank Jm Geurts, B. Choi, B. D. Anderson, J. N. Marx, A. P. Meschanin, C. E. Allgower, V. V. Belaga, J. Fu, B. K. Srivastava, I. M. Vasilevski, Alexander Kovalenko, J. Sowinski, J. Schambach, T. Ljubicic, H. Caines, W. S. Deng, J. P. Coffin, O. V. Rogachevski, V. Perevoztchikov, K. Filimonov, L. V. Nogach, V. L. Rykov, M. Cherney, A. Ishihara, V. B. Dunin, W. Christie, J. Gans, P. Sorensen, S. Lange, E. Sugarbaker, Thomas Michael Cormier, V. Trofimov, Peter Graham Jones, A. I. Kulikov, S. J. Lindenbaum, Yu Chen, H. Z. Huang, Boris Hippolyte, Masashi Kaneta, R. Wells, Morton Kaplan, W. M. Zhang, Andrey Vasiliev, J. Balewski, J. G. Cramer, P. Nevski, Sergey Panitkin, J. C. Dunlop, Claude Andre Pruneau, Sergey Voloshin, L. Didenko, F. Meissner, D. Seliverstov, A. Schüttauf, Jinghui Yang, T. Ullrich, G. lo Curto, Janet Elizabeth Seger, R. Zoulkarneev, K. J. Foley, L. C. Bland, Peter Martin Jacobs, Subhasis Chattopadhyay, Zubayer Ahammed, M. Kramer, K. Turner, M. Guedon, M. J. LeVine, S. Radomski, S. R. Klein, Y. Panebratsev, T. J. Humanic, C. Roy, S. U. Pandey, A. E. Yakutin, O. Barannikova, D. L. Olson, I.A. Savin, N. T. Porile, J. W. Harris, R. P. Scharenberg, G. Rai, M. A. C. Lamont, S. B. Nurushev, Z. Milosevich, Mingshui Chen, F. Retiere, A. Klyachko, A. A. Derevschikov, A. Lebedev, S. Margetis, N. Schmitz, H. S. Matis, A. C. Saulys, F. Laue, Yu A. Matulenko, M. Horsley, E. Gushin, G. J. Kunde, Vladimir Tikhomirov, N. G. Minaev, Vladimir Petrov, E. Shahaliev, P. Yepes, V. Eckardt, O. A. Grachov, A. Szanto de Toledo, B. Stringfellow, Z. J. Xu, S. P. Chernenko, L. S. Schroeder, E. G. Judd, Adam Ryszard Kisiel, N. Xu, W. J. Llope, S. Trentalange, J. Baudot, S. V. Razin, E. Hjort, L. Gaudichet, H. J. Crawford, A. Cardenas, J. Kiryluk, N.D. Gagunashvili, Y. V. Zanevski, T. Pawlak, G. D. Westfall, J. Carroll, W. W. Jacobs, Jay Roberts, Malgorzata Anna Janik, J. Porter, B. Lasiuk, C. L. Kunz, M. Lopez-Noriega, H. Long, C. F. Moore, C. P. Lansdell, R.J.M. Snellings, R. Witt, R. Willson, A. Tai, D. G. Underwood, J. Amonett, G. Skoro, M. Heffner, J. Klay, M. Oldenburg, V. Emelianov, D. Keane, D. Reichhold, R. Lednický, Nikolai Smirnov, R. Stock, J. Mitchell, L. G. Efimov, T. J. Hallman, T. J. M. Symons, Yu. Ivanshin, V. A. Nikitin, H. Ward, A. S. Hirsch, M. de la Calderón Barca Sánchez, A. A. Kuznetsov, L. Liu, P. Kravtsov, V. M. Leontiev, Olivier Ravel, C. Adler, K. E. Shestermanov, H. G. Ritter, R. Bellwied, Jeffrey G. Reid, A. S. Konstantinov, B. Erazmus, D. Cebra, Yu Melnick, V. A. Moiseenko, Marcelo Gameiro Munhoz, D. J. Prindle, A. V. Brandin, H. Zhang, E. J. Stephenson, M. A. Lisa, H. M. Spinka, J. H. Thomas, H. Bichsel, S. E. Vigdor, G. Odyniec, G. S. Averichev, Christian Claude Kuhn, Matthew J. Anderson, David Lynn, Lee Stuart Barnby, C. O. Blyth, A. M. Poskanzer, W. A. Love, B. Norman, I. Sakrejda, Vitaly Okorokov, M. Tokarev, H. H. Wieman, J. Engelage, John N. Wood, J. M. Landgraf, M. M. de Moura, M. Strikhanov, M. L. Miller, Christina Markert, J. Sandweiss, Z. Liu, P. Szarwas, E. Yamamoto, C. A. Gagliardi, T. Herston, Fuqiang Wang, V. I. Yurevich, and I. Zborovský
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, High Energy Physics::Phenomenology, Nuclear Theory, Hadron, Strangeness production, Astrophysics::Cosmology and Extragalactic Astrophysics, Strangeness, Spectral line, Nuclear physics, Baryon, Transverse plane, Pion, High Energy Physics::Experiment, Nuclear Experiment, STAR detector
Abstract: The STAR detector has made a variety of measurements of strange and other hadronic species in Au+Au collisions at s N N = 130 GeV. A comparison of kaon and pion production enables an examination of the systematics of strangeness production with energy by comparing them to lower energy collisions. Anti-baryon to baryon ratios indicate a much reduced net-baryon density and transverse momentum spectra show that a picture of transverse expansion seems appropriate.
Published: 2002

14. Event-plane-dependent dihadron correlations with harmonicvnsubtraction in Au + Au collisions atsNN=200GeV

Author: V. A. Kizka, J. H. Thomas, L. K. Mangotra, Jorn Henning Putschke, B. Haag, R. Manweiler, Hongfang Liu, A. V. Brandin, A. M. Poskanzer, Ermes Braidot, D. Kettler, Adam Ryszard Kisiel, Zebo Tang, P. Seyboth, X. Li, A. Kechechyan, Andre Mischke, G. S. Averichev, H. J. Crawford, Z. Chajecki, J. Rusnak, V. Fine, J. G. Cramer, M. Krus, R. Cendejas, R. Derradi de Souza, T. P. Burton, D. Cebra, M. Estienne, C. A. Whitten, Feng Jin, L. Ruan, P. R. Pujahari, C. B. Powell, H. Agakishiev, F. Videbæk, I. Selyuzhenkov, C. Perkins, E. V. Lukashov, T. Peitzmann, Jake Y. Chen, J. Engelage, D. Thein, R. Corliss, I. K. Yoo, L. Kotchenda, J. Alford, Marcelo Gameiro Munhoz, H. Z. Huang, G. Webb, S. Vokal, Xiangming Sun, D. J. Prindle, Nirbhay Kumar Behera, H. G. Ritter, M. J. M. Codrington, E. W. Oldag, A. Bridgeman, Zhiming Li, Sukalyan Chattopadhyay, I. G. Alekseev, Donika Plyku, O. D. Tsai, L. H. Tarini, W. Guryn, Bernd Surrow, M. A. Lisa, B. Huang, Anik Gupta, R. Fatemi, Michael Joseph Betancourt, R. Bellwied, T. S. McShane, A. Geromitsos, Premomoy Ghosh, J. M. Landgraf, L. Koroleva, M. Tokarev, M. Elnimr, M. C. Cervantes, H. Pei, O. G. Grebenyuk, G. Wang, K. Yip, J. S. Wang, P. Chung, D. R. Gangadharan, M. J. Skoby, Frank Jm Geurts, B. D. Anderson, E. G. Judd, K. Krueger, R. R. Debbe, Wei Xie, Y. Xu, P. Chaloupka, M. Strikhanov, J. C. Webb, J. Fedorisin, Chitrasen Jena, C. D. Anson, J. A. Vanfossen, Jongmin Lee, N. K. Pruthi, Matthew Walker, Z. J. Xu, A. G. Knospe, S. G. Steadman, Jifa Tian, D. Staszak, H. Bichsel, G. Odyniec, Y. Zoulkarneeva, Y. Li, S. M. Guertin, Alexandre Alarcon Do Passo Suaide, Y. P. Lu, J. Konzer, J. Kiryluk, S. Trentalange, Ki-Seok Choi, J. H. Chen, J. Joseph, G. M.S. Vasconcelos, Bedangadas Mohanty, Zhigang Xiao, M. Sharma, Z. J. Sun, A. Chikanian, S. H. Zhang, G. Eppley, W. Zhou, Shingo Sakai, J. Pluta, Pawan Kumar Netrakanti, Q. Wang, T. D. S. Stanislaus, D. P. Mahapatra, J. Sandweiss, Y. Pandit, V. N. Tram, Y. J. Sun, I. Koralt, I. Sakrejda, T. Ljubicic, Kejun Kang, M. Cherney, L. V. Nogach, N. Schmitz, H. H. Wieman, R. G. Fersch, Mateusz Andrzej Ploskon, R. Witt, M. Zawisza, H. M. Spinka, H. W. Ke, N. G. Minaev, M. Calderon De La Barca Sanchez, W. Li, D. A. Morozov, Lokesh Kumar, Jie Zhao, N. R. Sahoo, T. R. Schuster, Y. H. Zhu, R. E. Tribble, A. Szanto de Toledo, S. Mioduszewski, E. Shahaliev, G. Van Nieuwenhuizen, L. C. Bland, Jana Bielcikova, Y. Yang, P. Kurnadi, M. Wada, E. Sangaline, D. Arkhipkin, A. Hamed, Haiyan Wang, S. Kabana, Y. P. Viyogi, S. LaPointe, N. Li, H. Caines, Sudhir Raniwala, W. Xu, A. Gordon, J. Kapitan, Gerald W Hoffmann, A. R. Timmins, S. M. Dogra, S. Bueltmann, C. A. Gagliardi, Hao Qiu, T. Pawlak, Donald M. McDonald, Prithwish Tribedy, B. K. Srivastava, Wolfgang Korsch, S. G. Brovko, E. Hjort, W. Witzke, A. V. Alakhverdyants, T. J. Humanic, A. Sarkar, N. Xu, J. L. Drachenberg, M. C. Suarez, D. N. Svirida, P. Filip, Y. F. Wu, Olga Evdokimov, Thorsten Sven Kollegger, Russell Richard Betts, M. Pachr, D. G. Underwood, Elena Bruna, A. Feng, Xiaofeng Zhu, Jay Roberts, M. Naglis, T. G. Dedovich, Michal Sumbera, T. Sakuma, L. Didenko, X. L. Wang, S. Heppelmann, X. Z. Cai, R. Varma, P. Pile, G. D. Westfall, S. C. Phatak, Basanta Kumar Nandi, Y. Fisyak, K. Oh, J. Cheng, A. Ogawa, H. F. Chen, T. J. M. Symons, William Axel Leight, D. D. Koetke, J. E. Draper, L. C. De Silva, James Prewitt Hays-Wehle, S. W. Wissink, Yu A. Matulenko, B. Biritz, C. Zhong, V. A. Okorokov, Madan M. Aggarwal, J. C. Dunlop, B. S. Page, Fuqiang Wang, D. P. Kikola, B. Stringfellow, S. Dash, C-Q. Li, Zubayer Ahammed, M. J. LeVine, Nikola Poljak, R. P. Scharenberg, Christina Markert, N. L. Subba, S. Margetis, J. L. Romero, M. K. Mitrovski, D. L. Olson, H. S. Matis, Q. Y. Shou, W. W. Jacobs, A. A. Derevschikov, E. Finch, X. Dong, J. Lauret, David Jonathan Hofman, H. Masui, R. Lednicky, T. Tarnowsky, P. Djawotho, S. K. Pal, Justin Stevens, D. Tlusty, Mirko Planinic, E. P. Sichtermann, Y. N. Gorbunov, J. Balewski, Rashmi Raniwala, O. Hajkova, Peter Martin Jacobs, J. W. Harris, T. Ullrich, J. Takahashi, R. Zoulkarneev, H. S. Xu, L. Eun, S. B. Nurushev, W. L. Zhan, Frank Simon, M. Shao, G. Van Buren, P. Yepes, A. Davila Leyva, X. G. Luo, M. Heinz, Jaroslav Bielcik, S. S. Shi, A. H. Tang, Jie Zhang, I. Bunzarov, W. Peryt, O. V. Rogachevskiy, L. Li, J. Seele, Mitali Mondal, W. A. Love, L. Xue, Li-Zhu Chen, O. I. Mall, M. A.C. Lamont, L-X. Han, Anju Bhasin, R. P. Redwine, B. V.K.S. Potukuchi, Yu-Gang Ma, A. Lebedev, W. J. Llope, Ross Milner, F. Liu, A. Ohlson, R. D. Majka, W. Borowski, Guo-Liang Ma, J. Schambach, R. S. Longacre, W. Christie, W. M. Zhang, Z. P. Zhang, A. S. Hirsch, P. Kravtsov, A. M. Schmah, Andrey Vasiliev, Xuan Zhang, B. Morozov, Janet Elizabeth Seger, Jie Liu, G. Igo, Hanna Paulina Zbroszczyk, D. R. Beavis, J. Bouchet, K. Kauder, Andrew Rose, Q. H. Xu, R. N. Singaraju, L. Huo, A. P. Meschanin, Sevil Salur, Y. Wang, Y. Panebratsev, D. Grosnick, V. Kouchpil, Yi Zhang, Rolf K. Reed, A. K. Bhati, D. Keane, Nikolai Smirnov, R. Stock, L. G. Efimov, and T. K. Nayak
Subjects: Quantum chromodynamics, Physics, Azimuth, Nuclear physics, Nuclear and High Energy Physics, Particle physics, Plane (geometry), Elliptic flow, Quark–gluon plasma, Harmonic, Nuclear Experiment, Jet quenching, Lambda
Abstract: STAR measurements of dihadron azimuthal correlations (Lambda phi) are reported in midcentral (20-60%) Au + Au collisions at v root sNN = 200 GeV as a function of the trigger particle's azimuthal angle relative to the event plane, phi(s) = | phi(1) -psi(EP)|. The elliptic (v(2)), triangular (v(3)), and quadratic (v(4)) flow harmonic backgrounds are subtracted using the zero yield at mini + Au collisions. It is found that a finite near-side (| Delta phi | pi/2) correlation shows a modification from d+ Au data, varying with fs. The modification may be a consequence of path-length-dependent jet quenching and may lead to a better understanding of high-density QCD.
Published: 2014

15. Midrapidity Antiproton-to-Proton Ratio fromAu+AuCollisions atsNN=130GeV

Author: Sergey Voloshin, J. Engelage, K. J. Foley, R. S. Longacre, J. M. Landgraf, M. Strikhanov, N. Xu, C. Roy, J. Sandweiss, G. D. Westfall, J. Baudot, B. Erazmus, J. Castillo, Y. V. Zanevski, Malgorzata Anna Janik, G. Igo, J. Carroll, D. M. Moltz, S. W. Wissink, A. A. Kuznetsov, C. O. Blyth, B. Norman, A. Klyachko, A. Maliszewski, H. M. Spinka, V. M. Leontiev, Olivier Ravel, R. Wells, V. A. Nikitin, K. Turner, T. Ullrich, D.E. Greiner, A. C. Saulys, K. E. Shestermanov, D. Cebra, Y. Fisyak, P. Fachini, A. Ogawa, Ian Johnson, V. S. Shvetcov, C. A. Whitten, Z. Z. Xu, T. J.M. Symons, E. Platner, A. Stolpovsky, H. Hümmler, W. Pinganaud, Jay Roberts, P. Leszczynski, S. Lange, T. Herston, S. J. Lindenbaum, Adam Ryszard Kisiel, P. Seyboth, Lee Stuart Barnby, Yu Melnick, L. Kotchenda, W. Christie, Vladimir Tikhomirov, S. Y. Panitkin, R. Bossingham, M. Lopez-Noriega, H. J. Crawford, J. G. Cramer, C. L. Kunz, B. Choi, A. Szanto de Toledo, C. F. Moore, H. G. Ritter, M. Castro, J. Lamas-Valverde, N. Schmitz, A. I. Kulikov, Matthew J. Anderson, R. Bellwied, A. S. Konstantinov, H. Bichsel, G. Odyniec, V. Trofimov, A. P. Meschanin, K. Krueger, Alexander Kovalenko, L. V. Nogach, R. Witt, E. Yamamoto, J. H. Thomas, L. Conin, G. Skoro, A. A.P. Suaide, Christophe Pierre Suire, Masashi Kaneta, M. Heffner, W. M. Zhang, Andrey Vasiliev, J. C. Dunlop, S. Radomski, S. Trentalange, C. E. Allgower, Zubayer Ahammed, V. Ghazikhanian, M. J. LeVine, A. H. Tang, W. A. Love, Joakim Nystrand, M. Cherney, John Z. H. Zhang, Thomas Michael Cormier, Vladimir Petrov, E. G. Judd, P. Nevski, T. Pawlak, David Lynn, L. Madansky, M. Kramer, G. S. Averichev, S. P. Chernenko, W. J. Llope, T. S. McShane, I. Sakrejda, E. Sugarbaker, A. Cardenas, Janet Elizabeth Seger, H. Z. Huang, D. Russ, Yu Chen, Fuqiang Wang, G. S. Mutchler, C. P. Lansdell, R.J.M. Snellings, J. Porter, L. S. Schroeder, Guy Paic, A. Chikanian, S. S. Shimanskii, J. Mitchell, B. Lasiuk, J. Grabski, A. I. Pavlinov, H. Long, Frank Jm Geurts, M. B. Tonjes, V. Morozov, P. Szarwas, V. I. Yurevich, J. N. Marx, D. Hardtke, F. Laue, R. D. Majka, A. V. Brandin, J. Sowinski, B. K. Srivastava, I. M. Vasilevski, J. Berger, J. Gans, E. Finch, Boris Hippolyte, S. E. Vigdor, V. A. Moiseenko, T. J. Humanic, Christian Claude Kuhn, A. Boucham, Marcelo Gameiro Munhoz, D. J. Prindle, I.A. Savin, N. T. Porile, V. B. Dunin, S. Bekele, E. J. Stephenson, M. A. Lisa, Yu A. Matulenko, M. Horsley, B. Stringfellow, A. Ishihara, R. Willson, D. G. Underwood, A. M. VanderMolen, D. Reichhold, T. J. Hallman, A. M. Poskanzer, A. Vanyashin, M. Tokarev, H. H. Wieman, A. S. Hirsch, P. Kravtsov, C. Adler, C. Struck, J. Takahashi, A. Ridiger, Torre Wenaus, Jeffrey G. Reid, Thomas A. Trainor, Morton Kaplan, R. P. Scharenberg, H. S. Matis, C. A. Ogilvie, W. W. Jacobs, D. Seliverstov, A. Schüttauf, Subhasis Chattopadhyay, Peter Martin Jacobs, S. Heppelmann, S. V. Razin, D. Flierl, H. Ward, M. A. C. Lamont, S. B. Nurushev, Z. Milosevich, L. Martin, G. Van Buren, R. K. Kutuev, J. M. Nelson, H. Stroebele, W. Peryt, J. E. Draper, N.D. Gagunashvili, J. P. Coffin, O. V. Rogachevski, V. Perevoztchikov, Alexander Khodinov, L. C. Bland, S. U. Pandey, A. E. Yakutin, J. W. Harris, E. Gushin, G. J. Kunde, P. Yepes, V. Eckardt, A. Yokosawa, G. Eppley, J. Pluta, Q. Li, Gerald W Hoffmann, Mingshui Chen, Thomas LeCompte, W. S. Deng, S. Margetis, O. A. Grachov, V. Grigoriev, R. L. Ray, E. Potrebenikova, V. V. Belaga, T. Ljubicic, F. Retiere, N. G. Minaev, H. Caines, V. L. Rykov, Peter Graham Jones, L. Didenko, J. Schambach, E. L. Hjort, J. Balewski, M. C. de la Barca Sánchez, A. Lebedev, M. M. de Moura, Marie Germain, Claude Andre Pruneau, Y. Panebratsev, G. Rai, A. N. Zubarev, R. Zoulkarneev, J. Klay, Jinghui Yang, G. LoCurto, S. R. Klein, O. Barannikova, D. L. Olson, M. DeMello, M. Oldenburg, V. Emelianov, A. A. Derevschikov, D. Keane, Nikolai Smirnov, R. Stock, L. G. Efimov, Yu. Ivanshin, B. E. Bonner, O. D. Tsai, and M. I. Ferguson
Subjects: Physics, Range (particle radiation), Particle physics, Proton, General Physics and Astronomy, Baryon, Nuclear physics, Pair production, Antiproton, High Energy Physics::Experiment, Rapidity, Nuclear Experiment, Nucleon, Energy (signal processing)
Abstract: We report results on the ratio of mid-rapidity anti-proton to proton yields in Au+Au collisions at $\rts = 130$ GeV per nucleon pair as measured by the STAR experiment at RHIC. Within the rapidity and transverse momentum range of $|y
Published: 2001

16. Elliptic Flow inAu+AuCollisions at√sNN=130GeV

Author: N. Stone, Christophe Pierre Suire, A. Lebedev, B. Miller, M. M. de Moura, M. Dialinas, P. Middlekamp, J. Scheblien, V. Ghazikhanian, A. Etkin, A. H. Tang, A. P. Meschanin, R.Kh. Kutuev, J. Berger, J. L. Romero, V. Fine, J. Engelage, T. J. Humanic, Peter J. Lindstrom, D. Zimmerman, I.A. Savin, N. T. Porile, Yu A. Matulenko, M. Horsley, Thomas LeCompte, B. Stringfellow, J. Sedlmeir, L. Smykov, E. Finch, T. S. McShane, J. W. Harris, Joakim Nystrand, V. B. Dunin, J. Grabski, P. Seyboth, D. Dayton, C. J. Liaw, R. Bossingham, J. N. Marx, C. Drancourt, S. Tonse, W. S. Deng, J. G. Cramer, R. A. Scheetz, A. Stolpovsky, H. Hümmler, L. Kotchenda, G. Koehler, E. Gushin, G. J. Kunde, P. Yepes, V. Eckardt, M. Kramer, A. I. Pavlinov, Y. Panebratsev, D. Grosnick, Granville Ott, G. Eppley, A. V. Brandin, V. Trofimov, J. M. Landgraf, M. Strikhanov, K. Krueger, M. B. Tonjes, E. I. Shakaliev, A. Yokosawa, Jinghui Yang, E. Sugarbaker, J. Hunter, H. Z. Huang, V. Morozov, A. Tarchini, S. V. Razin, K. Wilson, G. Rai, Y. Shi, G. Van Buren, J. M. Nelson, P. A. DeYoung, J. Pluta, C. Roy, H. Stroebele, J. Carroll, C. Byrd, N. Xu, G. D. Westfall, D. Padrazo, R. Wells, C. Struck, W. Pinganaud, D. Hardtke, F. Laue, J.F. Amsbaugh, Jay Roberts, N. Adams, David Fritz, J. Sandweiss, G. LoCurto, A. C. Saulys, S. R. Klein, C. E. Allgower, R. D. Majka, J. Zhu, Sergey Voloshin, J. Sowinski, Matthew Nguyen, W. Peryt, J. Takahashi, J. Wolf, C. Feliciano, Y. Fisyak, L. Greiner, K. J. Foley, J. Schambach, E. L. Hjort, S. Pirogov, A. Ogawa, Ian Johnson, Krista M. Marks, S. E. Vigdor, Vladimir Petrov, C. L. Kunz, Z. Li, O. Barannikova, D. L. Olson, F. P. Brady, Gerald W Hoffmann, S. P. Chernenko, D. Seliverstov, A. Schüttauf, Christian Claude Kuhn, W. J. Llope, Q. Li, C. O. Blyth, C. F. Moore, M. Cherney, H. Fessler, W. Christie, Thomas Michael Cormier, D.E. Greiner, T. Krupien, Torre Wenaus, Masashi Kaneta, Ross Schlueter, W. M. Zhang, Andrey Vasiliev, D. Hill, Richard C. Jared, M. Calderón de la Barca Sánchez, R. Weidenbach, T. Nguyen, A. Cardenas, Peter Martin Jacobs, N. Schmitz, S. Chatopadhyay, P. Nevski, M. Lopez-Noriega, A. Klyachko, R. Witt, E. Yamamoto, J. Klay, Thomas A. Trainor, W. R. Edwards, P. Sappenfield, N.D. Gagunashvili, J. Baudot, E. A. Matyushevski, P. Kuczewski, J. C. Dunlop, A. A. Derevschikov, K. Olchanski, V. I. Danilov, C. P. Lansdell, Wilfred J. Braithwaite, E. Mogavero, R.J.M. Snellings, Janet Elizabeth Seger, J. Lin, M. A. C. Lamont, S. B. Nurushev, Z. Milosevich, B. Lasiuk, J. Wisdom, Y. V. Zanevski, F. Retiere, W. Hunt, V. Kormilitsyne, D. Russ, B. E. Bonner, J. T.M. Chrin, G. S. Mutchler, H. Diaz, J. R. Hall, Zubayer Ahammed, G. A. Ososkov, M. J. LeVine, B. Norman, J. Gross, H. Long, K. Bradley, Yu Chen, Wen-Chang Chen, N. G. Minaev, O. D. Tsai, R. P. Scharenberg, Marie Germain, R. Seymour, M. A. Howe, B. Choi, R. Marstaller, W. Betts, Vladimir Tikhomirov, Salahuddin Ahmad, I. Polk, H. S. Matis, G. C. Harper, A. S. Hirsch, P. Kravtsov, A. Maliszewski, Alexander Kovalenko, L. V. Nogach, L. C. Bland, S. Bennett, H. J. Crawford, I. Vakula, C. Adler, F. S. Bieser, L. Wood, A. N. Zubarev, C. A. Ogilvie, G. Brugalette, V. S. Shvetcov, L. S. Schroeder, J. Meier, H. Liu, S. U. Pandey, A. E. Yakutin, I. Flores, Morton Kaplan, V. Perevotchikov, C. A. Whitten, M. Pentia, Marek Gazdzicki, L. Lakehal-Ayat, D. Lopiano, S. Trentalange, A. Ridiger, W. W. Jacobs, M. I. Ferguson, J. Lamas-Valverde, C. Gojak, M. Botlo, Guy Paic, I. Sakrejda, T. Ngo, E. Platner, B. Minor, V. Lindenstruth, V. A. Nikitin, S. Heppelmann, D. Flierl, Ma Bloomer, John Z. H. Zhang, A. Chikanian, S. S. Shimanskii, J. Mitchell, E. G. Judd, L. Martin, Jeffrey G. Reid, B. K. Srivastava, I. M. Vasilevski, K. E. Shestermanov, V. V. Belaga, Lincoln D. Carr, J. Gans, S. Lange, L. Arnold, Boris Hippolyte, G. Skoro, M. Heffner, J. E. Draper, J. Puskar-Pasewicz, R. Morse, V. Grigoriev, J. P. Coffin, O. V. Rogachevski, N. Bouillo, M. DeMello, S. J. Lindenbaum, N. Mikhalin, A. Boucham, H. Ward, M. Oldenburg, Peter Graham Jones, R. L. Ray, V. Emelianov, D. Keane, A. R. Baldwin, A. A. P. Suaide, L. Didenko, Damien Bonnet, Nikolai Smirnov, R. Stock, S. Y. Panitkin, E. Potrebenikova, W. J. Leonhardt, S. Bekele, S. Bouvier, V. P. Kenney, L. G. Efimov, Frank Jm Geurts, Yu. Ivanshin, J. Castillo, S. W. Wissink, R. L. Brown, W. Dominik, P. Jensen, A. Ishihara, T. Ljubicic, Alexander Khodinov, Robert Stone, M. Tokarev, G. Guilloux, Robert R. J. Maier, D. DiMassimo, E. Anderssen, A. M. VanderMolen, H. H. Wieman, H. Caines, S. Jacobson, D. Shuman, R. Willson, D. G. Underwood, J. Wirth, D. Reichhold, T. J. Hallman, T. J. M. Symons, K. Turner, A. Szanto de Toledo, A. M. Poskanzer, J. Tarzian, P. He, K. Solberg, T. Pawlak, A. Vanyashin, Z. Sandler, B. Caylor, R. S. Longacre, V. L. Rykov, J. Porter, G. Igo, J. Seyboth, P. Fachini, D. D. Weerasundara, Mingshui Chen, M. Grau, S. Margetis, O. A. Grachov, M. Schulz, J. R. Lutz, Rainer Arno Ernst Renfordt, J. Balewski, H. G. Ritter, Claude Andre Pruneau, H. Arnesen, R. Zoulkarneev, R. Bellwied, A. S. Konstantinov, K. H. Ackermann, D. M. Moltz, A. A. Kuznetsov, Ivan Kotov, T. Noggle, V. M. Leontiev, Olivier Ravel, J. Whitfield, T. Ullrich, D. Roehrich, B. Erazmus, Z. Z. Xu, D. Cebra, C. Consiglio, M. Beddo, Yu Melnick, P. Leszczynski, J. Bercovitz, T. Herston, J. Riso, Lee Stuart Barnby, V. A. Moiseenko, Marcelo Gameiro Munhoz, D. J. Prindle, E. J. Stephenson, M. A. Lisa, W. A. Love, T. Nussbaum, Daniel Ferenc, Fuqiang Wang, H. Bichsel, G. Odyniec, V. I. Yurevich, E. S. Braithwaite, J. Boehm, T. Eggert, David Lynn, L. Madansky, R. Sanchez, J. Dioguardi, J. H. Thomas, L. Conin, G. Visser, G. S. Averichev, C. P. McParland, H. M. Spinka, J. Rasson, Chinh Vu, and Matthew J. Anderson
Subjects: Physics, Particle physics, Time projection chamber, Hadron, Elliptic flow, General Physics and Astronomy, Observable, Particle accelerator, Charged particle, law.invention, Nuclear physics, law, Pseudorapidity, Nuclear Experiment, Relativistic Heavy Ion Collider
Abstract: Elliptic flow from nuclear collisions is a hadronic observable sensitive to the early stages of system evolution. We report first results on elliptic flow of charged particles at midrapidity in Au+Au collisions at √(sNN) = 130 GeV using the STAR Time Projection Chamber at the Relativistic Heavy Ion Collider. The elliptic flow signal, v₂, averaged over transverse momentum, reaches values of about 6% for relatively peripheral collisions and decreases for the more central collisions. This can be interpreted as the observation of a higher degree of thermalization than at lower collision energies. Pseudorapidity and transverse momentum dependence of elliptic flow are also presented.
Published: 2001

17. The STAR Time Projection Chamber

Author: K.H. Ackermann, N. Adams, C. Adler, M. Aluyshin, M.A. Ananeva, M. Anderson, G. Averichev, A. Bacher, J. Balewski, O. Balrannikova, J. Baudot, S. Bekele, R. Bellwied, S. Bennett, J. Berger, W. Betts, H. Bichsel, F. Bieser, L. Bland, C. Blyth, A. Bogdanov, B.E. Bonner, R. Bossingham, A. Boucham, S. Bouvier, F.P. Brady, E. Braithwaite, W. Braithwaite, R.L. Brown, V. Budilov, C. Byrd, H. Caines, N. Carlin, J. Carroll, D. Cebra, M.-L. Chen, W. Chen, Y. Chen, S. Chernenko, M. Cherney, A. Chikanian, J.T.M. Chrin, W. Christie, J.-P. Coffin, L. Conin, T.M. Cormier, J. Cramer, H.J. Crawford, A. Das, W. Deng, A.A. Derevschikov, L. Didenko, W. Dominik, J.E. Draper, V. Dunin, J. Dunlop, H. Dyke, W.R. Edwards, V. Eckardt, A.V. Efremov, V. Emelianov, J. Engelage, G. Eppley, B. Erazmus, A. Etkin, P. Fachini, V. Faine, M.I. Ferguson, H. Fessler, E. Finch, Y. Fisyak, D. Flierl, K.J. Foley, D. Fritz, N. Gagunashvili, M. Germain, V. Ghazikhanian, M. Gilkes, S. Giliberto, J. Grabski, O. Grachov, D. Greiner, L.C. Greiner, V. Grigoriev, E. Gushin, H. Gutbrod, T.J. Hallman, D. Hardtke, J.W. Harris, M. Heffner, S. Heppelmann, A. Hirsch, E. Hjort, G.W. Hoffmann, M. Horsley, H. Huang, T. Humanic, H. Huemmler, T. Huyck, G.J. Igo, Yu.I. Ivanshin, P. Jacobs, W. Jacobs, S. Jacobson, R. Jared, P. Jones, E.G. Judd, F. Jundt, M. Kaplan, V. Kaplin, D. Keane, V. Khodyrev, J. Klay, S. Klein, L. Kolobashkina, A. Konstantinov, L. Kotchenda, I. Kotov, M. Kramer, P. Kravtsov, C. Kuhn, G.J. Kunde, R. Kutuev, M. Lamont, J.S. Lange, B. Lasiuk, F. Laue, A. Lebedev, Z. Lee, T. LeCompte, B. Leonhardt, V. Leontiev, null Leszczynski, M.J. LeVine, Q. Li, Z. Li, C.J. Liaw, J. Lin, S.J. Lindenbaum, H. Liu, M. Lisa, A. Ljubicic, W. Llope, G. LoCurto, H. Long, R.S. Longacre, W.A. Love, J.R. Lutz, D. Lynn, L. Madansky, R. Majka, T.M. Makarenko, A. Maliszewski, S. Margetis, K. Marks, L. Martin, J. Marx, H.S. Matis, Yu. Matulenko, T.S. McShane, A. Meshanin, Yu. Melnik, A. Michalon, B. Miller, Z. Milosevich, N. Minaev, R.M. Minor, J. Mitchell, V.A. Moiseenko, D. Moltz, C.F. Moore, M.G. Munhoz, G.S. Mutchler, J.M. Nelson, P. Nevski, V. Nikitin, B. Nilsen, L. Nogach, S. Nurushev, J. Nystrand, G. Odyniec, A. Ogawa, C.A. Ogilvie, V. Okorokov, D. Olson, A. Oltchak, G. Ott, G. Paic, S. Pandey, Y. Panebratsev, S.Y. Panitkin, A. Pavlinov, T. Pawlak, W. Peryt, V. Perevoztchikov, V.A. Petrov, Yu. Petukhov, W. Pinganaud, E. Platner, J. Pluta, N. Porile, J. Porter, A.M. Poskanzer, M. Przewlocki, D. Prindle, E. Potrebenikova, C. Pruneau, G. Rai, O. Ravel, R.L. Ray, D. Razin, S. Razin, J. Reid, F. Retiere, A. Ridiger, J. Riso, H.-G. Ritter, J.B. Roberts, D. Roehrich, O. Rogachevskiy, A. Rollefson, J.L. Romero, C. Roy, M. Runco, D.E. Russ, V. Rykov, I. Sakrejda, P. Saltz, J. Sandweiss, A.C. Saulys, I. Savin, J.J. Schambach, R.P. Scharenberg, N. Schmitz, L.S. Schroeder, A. Schuettauf, M. Schulz, J. Seger, D. Seliverstov, J. Seyboth, P. Seyboth, A. Shalnov, K. Shestermanov, Y. Shi, V.S. Shvetsov, I.N. Silin, N. Smirnoff, R. Snellings, L. Soloviev, J. Sowinski, H.M. Spinka, B. Srivastava, E. Stephenson, R. Stock, M. Strikhanov, B. Stringfellow, H. Stroebele, C. Struck, E. Sugarbaker, C. Suire, A. Sustich, T.J. Symons, E.M. Szanto, A. Szanto de Toledo, J. Takahashi, A. Tang, D. Thein, J.H. Thomas, V. Tikhomirov, V. Tikhonov, M.B. Tonjes, T. Trainor, S. Trentalange, M. Tokarev, V. Trofimov, O. Tsai, C. Tull, K. Turner, T. Ullrich, D.G. Underwood, G. VanBuren, A.M. VanderMolen, A. Vanyashin, A. Vasiliev, I.M. Vasilevski, S. Vigdor, S. Voloshin, C.Q. Vu, F. Wang, H.J. Ward, D. Weerasundra, R. Wells, T. Wenaus, G.D. Westfall, J.P. Whitfield, C. Whitten, H. Wieman, R. Willson, S. Wissink, R. Witt, L. Wood, N. Xu, Z. Xu, A. Yakutin, E. Yamamoto, J. Yang, P. Yepes, A. Yokosawa, V. Yurevich, J. Zhang, W.M. Zhang, N. Zhidkov, D. Zimmerman, R. Zoulkarneev, A. Zubarev, Institut de Recherches Subatomiques (IReS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Cancéropôle du Grand Est-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), Laboratoire SUBATECH Nantes (SUBATECH), Mines Nantes (Mines Nantes)-Université de Nantes (UN)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and STAR
Subjects: Physics, Nuclear and High Energy Physics, Time projection chamber, Physics::Instrumentation and Detectors, business.industry, 010308 nuclear & particles physics, Track (disk drive), Resolution (electron density), Observable, Star (graph theory), Engineering physics, 01 natural sciences, Particle identification, 030218 nuclear medicine & medical imaging, 03 medical and health sciences, Stars, 0302 clinical medicine, Optics, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], 0103 physical sciences, Data analysis, Nuclear Experiment, business, 010306 general physics
Abstract: The STAR Time Projection Chamber was successfully operated during the first RHIC run in 2000. Most of the STAR contributions reported in these proceedings are based on the analysis of data from the TPC. In this article, we show that the performance achieved by the TPC, in terms of track reconstruction, position resolution, and particle identification are well suited for measuring precise and reliable physics observables.
Published: 1999

18. K*0production in Cu+Cu and Au+Au collisions atsNN=62.4GeV and 200 GeV

Author: M. M. Aggarwal, Z. Ahammed, A. V. Alakhverdyants, I. Alekseev, J. Alford, B. D. Anderson, C. D. Anson, D. Arkhipkin, G. S. Averichev, J. Balewski, L. S. Barnby, S. Baumgart, D. R. Beavis, R. Bellwied, M. J. Betancourt, R. R. Betts, A. Bhasin, A. K. Bhati, H. Bichsel, J. Bielcik, J. Bielcikova, B. Biritz, L. C. Bland, B. E. Bonner, J. Bouchet, E. Braidot, A. V. Brandin, A. Bridgeman, E. Bruna, S. Bueltmann, I. Bunzarov, T. P. Burton, X. Z. Cai, H. Caines, M. Calderon de la Barca Sanchez, O. Catu, D. Cebra, R. Cendejas, M. C. Cervantes, Z. Chajecki, P. Chaloupka, S. Chattopadhyay, H. F. Chen, J. H. Chen, J. Y. Chen, J. Cheng, M. Cherney, A. Chikanian, K. E. Choi, W. Christie, P. Chung, R. F. Clarke, M. J. M. Codrington, R. Corliss, J. G. Cramer, H. J. Crawford, D. Das, S. Dash, A. Davila Leyva, L. C. De Silva, R. R. Debbe, T. G. Dedovich, A. A. Derevschikov, R. Derradi de Souza, L. Didenko, P. Djawotho, S. M. Dogra, X. Dong, J. L. Drachenberg, J. E. Draper, J. C. Dunlop, M. R. Dutta Mazumdar, L. G. Efimov, E. Elhalhuli, M. Elnimr, J. Engelage, G. Eppley, B. Erazmus, M. Estienne, L. Eun, O. Evdokimov, P. Fachini, R. Fatemi, J. Fedorisin, R. G. Fersch, P. Filip, E. Finch, V. Fine, Y. Fisyak, C. A. Gagliardi, D. R. Gangadharan, M. S. Ganti, E. J. Garcia-Solis, A. Geromitsos, F. Geurts, V. Ghazikhanian, P. Ghosh, Y. N. Gorbunov, A. Gordon, O. Grebenyuk, D. Grosnick, S. M. Guertin, A. Gupta, W. Guryn, B. Haag, A. Hamed, L.-X. Han, J. W. Harris, J. P. Hays-Wehle, M. Heinz, S. Heppelmann, A. Hirsch, E. Hjort, A. M. Hoffman, G. W. Hoffmann, D. J. Hofman, B. Huang, H. Z. Huang, T. J. Humanic, L. Huo, G. Igo, P. Jacobs, W. W. Jacobs, C. Jena, F. Jin, C. L. Jones, P. G. Jones, J. Joseph, E. G. Judd, S. Kabana, K. Kajimoto, K. Kang, J. Kapitan, K. Kauder, D. Keane, A. Kechechyan, D. Kettler, D. P. Kikola, J. Kiryluk, A. Kisiel, S. R. Klein, A. G. Knospe, A. Kocoloski, D. D. Koetke, T. Kollegger, J. Konzer, I. Koralt, L. Koroleva, W. Korsch, L. Kotchenda, V. Kouchpil, P. Kravtsov, K. Krueger, M. Krus, L. Kumar, P. Kurnadi, M. A. C. Lamont, J. M. Landgraf, S. LaPointe, J. Lauret, A. Lebedev, R. Lednicky, C.-H. Lee, J. H. Lee, W. Leight, M. J. LeVine, C. Li, L. Li, N. Li, W. Li, X. Li, Y. Li, Z. M. Li, G. Lin, S. J. Lindenbaum, M. A. Lisa, F. Liu, H. Liu, J. Liu, T. Ljubicic, W. J. Llope, R. S. Longacre, W. A. Love, Y. Lu, E. V. Lukashov, X. Luo, G. L. Ma, Y. G. Ma, D. P. Mahapatra, R. Majka, O. I. Mall, L. K. Mangotra, R. Manweiler, S. Margetis, C. Markert, H. Masui, H. S. Matis, Yu. A. Matulenko, D. McDonald, T. S. McShane, A. Meschanin, R. Milner, N. G. Minaev, S. Mioduszewski, A. Mischke, M. K. Mitrovski, B. Mohanty, M. M. Mondal, B. Morozov, D. A. Morozov, M. G. Munhoz, B. K. Nandi, C. Nattrass, T. K. Nayak, J. M. Nelson, P. K. Netrakanti, M. J. Ng, L. V. Nogach, S. B. Nurushev, G. Odyniec, A. Ogawa, V. Okorokov, E. W. Oldag, D. Olson, M. Pachr, B. S. Page, S. K. Pal, Y. Pandit, Y. Panebratsev, T. Pawlak, T. Peitzmann, V. Perevoztchikov, C. Perkins, W. Peryt, S. C. Phatak, P. Pile, M. Planinic, M. A. Ploskon, J. Pluta, D. Plyku, N. Poljak, A. M. Poskanzer, B. V. K. S. Potukuchi, C. B. Powell, D. Prindle, C. Pruneau, N. K. Pruthi, P. R. Pujahari, J. Putschke, H. Qiu, R. Raniwala, S. Raniwala, R. L. Ray, R. Redwine, R. Reed, H. G. Ritter, J. B. Roberts, O. V. Rogachevskiy, J. L. Romero, A. Rose, C. Roy, L. Ruan, R. Sahoo, S. Sakai, I. Sakrejda, T. Sakuma, S. Salur, J. Sandweiss, E. Sangaline, J. Schambach, R. P. Scharenberg, N. Schmitz, T. R. Schuster, J. Seele, J. Seger, I. Selyuzhenkov, P. Seyboth, E. Shahaliev, M. Shao, M. Sharma, S. S. Shi, E. P. Sichtermann, F. Simon, R. N. Singaraju, M. J. Skoby, N. Smirnov, P. Sorensen, J. Sowinski, H. M. Spinka, B. Srivastava, T. D. S. Stanislaus, D. Staszak, J. R. Stevens, R. Stock, M. Strikhanov, B. Stringfellow, A. A. P. Suaide, M. C. Suarez, N. L. Subba, M. Sumbera, X. M. Sun, Y. Sun, Z. Sun, B. Surrow, D. N. Svirida, T. J. M. Symons, A. Szanto de Toledo, J. Takahashi, A. H. Tang, Z. Tang, L. H. Tarini, T. Tarnowsky, D. Thein, J. H. Thomas, J. Tian, A. R. Timmins, S. Timoshenko, D. Tlusty, M. Tokarev, T. A. Trainor, V. N. Tram, S. Trentalange, R. E. Tribble, O. D. Tsai, J. Ulery, T. Ullrich, D. G. Underwood, G. Van Buren, M. van Leeuwen, G. van Nieuwenhuizen, J. A. Vanfossen, R. Varma, G. M. S. Vasconcelos, A. N. Vasiliev, F. Videbaek, Y. P. Viyogi, S. Vokal, S. A. Voloshin, M. Wada, M. Walker, F. Wang, G. Wang, H. Wang, J. S. Wang, Q. Wang, X. L. Wang, Y. Wang, G. Webb, J. C. Webb, G. D. Westfall, C. Whitten, H. Wieman, S. W. Wissink, R. Witt, Y. F. Wu, W. Xie, H. Xu, N. Xu, Q. H. Xu, W. Xu, Y. Xu, Z. Xu, L. Xue, Y. Yang, P. Yepes, K. Yip, I.-K. Yoo, Q. Yue, M. Zawisza, H. Zbroszczyk, W. Zhan, J. B. Zhang, S. Zhang, W. M. Zhang, X. P. Zhang, Y. Zhang, Z. P. Zhang, J. Zhao, C. Zhong, J. Zhou, W. Zhou, X. Zhu, Y. H. Zhu, R. Zoulkarneev, and Y. Zoulkarneeva
Subjects: Physics, Nuclear and High Energy Physics, Meson, 010308 nuclear & particles physics, Hadron, Elliptic flow, Elementary particle, Fermion, 01 natural sciences, Nuclear physics, Particle decay, 0103 physical sciences, High Energy Physics::Experiment, Rapidity, Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider
Abstract: We report on K*(0) production at midrapidity in Au + Au and Cu + Cu collisions at root s(NN) = 62.4 and 200 GeV collected by the Solenoid Tracker at the Relativistic Heavy Ion Collider detector. The K*(0) is reconstructed via the hadronic decays K*(0) -> K+pi(-) and (K*(0)) over bar -> K+pi(-). Transverse momentum, p(T), spectra are measured over a range of p(T) extending from 0.2 GeV/c up to 5 GeV/c. The center-of-mass energy and system size dependence of the rapidity density, dN/dy, and the average transverse momentum, , are presented. The measured N(K*(0))/N(K) and N(phi)/N(K*(0)) ratios favor the dominance of rescattering of decay daughters of K*(0) over the hadronic regeneration for the K*(0) production. In the intermediate p(T) region (2.0 < p(T) < 4.0 GeV/c), the elliptic flow parameter, v(2), and the nuclear modification factor, R-CP, agree with the expectations from the quark coalescence model of particle production.
Published: 2011

19. Pion femtoscopy inp + pcollisions ats=200GeV

Author: M. M. Aggarwal, Z. Ahammed, A. V. Alakhverdyants, I. Alekseev, J. Alford, B. D. Anderson, D. Arkhipkin, G. S. Averichev, J. Balewski, L. S. Barnby, S. Baumgart, D. R. Beavis, R. Bellwied, M. J. Betancourt, R. R. Betts, A. Bhasin, A. K. Bhati, H. Bichsel, J. Bielcik, J. Bielcikova, B. Biritz, L. C. Bland, B. E. Bonner, J. Bouchet, E. Braidot, A. V. Brandin, A. Bridgeman, E. Bruna, S. Bueltmann, I. Bunzarov, T. P. Burton, X. Z. Cai, H. Caines, M. Calderón de la Barca Sánchez, O. Catu, D. Cebra, R. Cendejas, M. C. Cervantes, Z. Chajecki, P. Chaloupka, S. Chattopadhyay, H. F. Chen, J. H. Chen, J. Y. Chen, J. Cheng, M. Cherney, A. Chikanian, K. E. Choi, W. Christie, P. Chung, R. F. Clarke, M. J. M. Codrington, R. Corliss, J. G. Cramer, H. J. Crawford, D. Das, S. Dash, A. Davila Leyva, L. C. De Silva, R. R. Debbe, T. G. Dedovich, A. A. Derevschikov, R. Derradi de Souza, L. Didenko, P. Djawotho, S. M. Dogra, X. Dong, J. L. Drachenberg, J. E. Draper, J. C. Dunlop, M. R. Dutta Mazumdar, L. G. Efimov, E. Elhalhuli, M. Elnimr, J. Engelage, G. Eppley, B. Erazmus, M. Estienne, L. Eun, O. Evdokimov, P. Fachini, R. Fatemi, J. Fedorisin, R. G. Fersch, P. Filip, E. Finch, V. Fine, Y. Fisyak, C. A. Gagliardi, D. R. Gangadharan, M. S. Ganti, E. J. Garcia-Solis, A. Geromitsos, F. Geurts, V. Ghazikhanian, P. Ghosh, Y. N. Gorbunov, A. Gordon, O. Grebenyuk, D. Grosnick, S. M. Guertin, A. Gupta, N. Gupta, W. Guryn, B. Haag, A. Hamed, L-X. Han, J. W. Harris, J. P. Hays-Wehle, M. Heinz, S. Heppelmann, A. Hirsch, E. Hjort, A. M. Hoffman, G. W. Hoffmann, D. J. Hofman, B. Huang, H. Z. Huang, T. J. Humanic, L. Huo, G. Igo, P. Jacobs, W. W. Jacobs, C. Jena, F. Jin, C. L. Jones, P. G. Jones, J. Joseph, E. G. Judd, S. Kabana, K. Kajimoto, K. Kang, J. Kapitan, K. Kauder, D. Keane, A. Kechechyan, D. Kettler, D. P. Kikola, J. Kiryluk, A. Kisiel, S. R. Klein, A. G. Knospe, A. Kocoloski, D. D. Koetke, T. Kollegger, J. Konzer, I. Koralt, L. Koroleva, W. Korsch, L. Kotchenda, V. Kouchpil, P. Kravtsov, K. Krueger, M. Krus, L. Kumar, P. Kurnadi, M. A. C. Lamont, J. M. Landgraf, S. LaPointe, J. Lauret, A. Lebedev, R. Lednicky, C-H. Lee, J. H. Lee, W. Leight, M. J. LeVine, C. Li, L. Li, N. Li, W. Li, X. Li, Y. Li, Z. M. Li, G. Lin, S. J. Lindenbaum, M. A. Lisa, F. Liu, H. Liu, J. Liu, T. Ljubicic, W. J. Llope, R. S. Longacre, W. A. Love, Y. Lu, E. V. Lukashov, X. Luo, G. L. Ma, Y. G. Ma, D. P. Mahapatra, R. Majka, O. I. Mall, L. K. Mangotra, R. Manweiler, S. Margetis, C. Markert, H. Masui, H. S. Matis, Yu. A. Matulenko, D. McDonald, T. S. McShane, A. Meschanin, R. Milner, N. G. Minaev, S. Mioduszewski, A. Mischke, M. K. Mitrovski, B. Mohanty, M. M. Mondal, B. Morozov, D. A. Morozov, M. G. Munhoz, B. K. Nandi, C. Nattrass, T. K. Nayak, J. M. Nelson, P. K. Netrakanti, M. J. Ng, L. V. Nogach, S. B. Nurushev, G. Odyniec, A. Ogawa, V. Okorokov, E. W. Oldag, D. Olson, M. Pachr, B. S. Page, S. K. Pal, Y. Pandit, Y. Panebratsev, T. Pawlak, T. Peitzmann, V. Perevoztchikov, C. Perkins, W. Peryt, S. C. Phatak, P. Pile, M. Planinic, M. A. Ploskon, J. Pluta, D. Plyku, N. Poljak, A. M. Poskanzer, B. V. K. S. Potukuchi, C. B. Powell, D. Prindle, C. Pruneau, N. K. Pruthi, P. R. Pujahari, J. Putschke, H. Qiu, R. Raniwala, S. Raniwala, R. L. Ray, R. Redwine, R. Reed, H. G. Ritter, J. B. Roberts, O. V. Rogachevskiy, J. L. Romero, A. Rose, C. Roy, L. Ruan, R. Sahoo, S. Sakai, I. Sakrejda, T. Sakuma, S. Salur, J. Sandweiss, E. Sangaline, J. Schambach, R. P. Scharenberg, N. Schmitz, T. R. Schuster, J. Seele, J. Seger, I. Selyuzhenkov, P. Seyboth, E. Shahaliev, M. Shao, M. Sharma, S. S. Shi, E. P. Sichtermann, F. Simon, R. N. Singaraju, M. J. Skoby, N. Smirnov, P. Sorensen, J. Sowinski, H. M. Spinka, B. Srivastava, T. D. S. Stanislaus, D. Staszak, J. R. Stevens, R. Stock, M. Strikhanov, B. Stringfellow, A. A. P. Suaide, M. C. Suarez, N. L. Subba, M. Sumbera, X. M. Sun, Y. Sun, Z. Sun, B. Surrow, D. N. Svirida, T. J. M. Symons, A. Szanto de Toledo, J. Takahashi, A. H. Tang, Z. Tang, L. H. Tarini, T. Tarnowsky, D. Thein, J. H. Thomas, J. Tian, A. R. Timmins, S. Timoshenko, D. Tlusty, M. Tokarev, T. A. Trainor, V. N. Tram, S. Trentalange, R. E. Tribble, O. D. Tsai, J. Ulery, T. Ullrich, D. G. Underwood, G. Van Buren, M. van Leeuwen, G. van Nieuwenhuizen, J. A. Vanfossen, R. Varma, G. M. S. Vasconcelos, A. N. Vasiliev, F. Videbaek, Y. P. Viyogi, S. Vokal, S. A. Voloshin, M. Wada, M. Walker, F. Wang, G. Wang, H. Wang, J. S. Wang, Q. Wang, X. L. Wang, Y. Wang, G. Webb, J. C. Webb, G. D. Westfall, C. Whitten, H. Wieman, S. W. Wissink, R. Witt, Y. F. Wu, W. Xie, H. Xu, N. Xu, Q. H. Xu, W. Xu, Y. Xu, Z. Xu, L. Xue, Y. Yang, P. Yepes, K. Yip, I-K. Yoo, Q. Yue, M. Zawisza, H. Zbroszczyk, W. Zhan, J. B. Zhang, S. Zhang, W. M. Zhang, X. P. Zhang, Y. Zhang, Z. P. Zhang, J. Zhao, C. Zhong, J. Zhou, W. Zhou, X. Zhu, Y. H. Zhu, R. Zoulkarneev, and Y. Zoulkarneeva
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Meson, 010308 nuclear & particles physics, Nuclear Theory, Hadron, Elementary particle, Context (language use), Bose–Einstein correlations, 01 natural sciences, Nuclear physics, Pion, 0103 physical sciences, Quark–gluon plasma, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider
Abstract: The STAR Collaboration at the BNL Relativistic Heavy Ion Collider has measured two-pion correlation functions from p + p collisions at root s = 200 GeV. Spatial scales are extracted via a femtoscopic analysis of the correlations, though this analysis is complicated by the presence of strong nonfemtoscopic effects. Our results are put into the context of the world data set of femtoscopy in hadron-hadron collisions. We present the first direct comparison of femtoscopy in p + p and heavy ion collisions, under identical analysis and detector conditions.
Published: 2011

20. Experimental studies of di-jet survival and surface emission bias inAu+Aucollisions via angular correlations with respect to back-to-back leading hadrons

Author: H. Agakishiev, M. M. Aggarwal, Z. Ahammed, A. V. Alakhverdyants, I. Alekseev, J. Alford, B. D. Anderson, C. D. Anson, D. Arkhipkin, G. S. Averichev, J. Balewski, D. R. Beavis, N. K. Behera, R. Bellwied, M. J. Betancourt, R. R. Betts, A. Bhasin, A. K. Bhati, H. Bichsel, J. Bielcik, J. Bielcikova, B. Biritz, L. C. Bland, I. G. Bordyuzhin, W. Borowski, J. Bouchet, E. Braidot, A. V. Brandin, A. Bridgeman, S. G. Brovko, E. Bruna, S. Bueltmann, I. Bunzarov, T. P. Burton, X. Z. Cai, H. Caines, M. Calderón de la Barca Sánchez, D. Cebra, R. Cendejas, M. C. Cervantes, Z. Chajecki, P. Chaloupka, S. Chattopadhyay, H. F. Chen, J. H. Chen, J. Y. Chen, L. Chen, J. Cheng, M. Cherney, A. Chikanian, K. E. Choi, W. Christie, P. Chung, M. J. M. Codrington, R. Corliss, J. G. Cramer, H. J. Crawford, S. Dash, A. Davila Leyva, L. C. De Silva, R. R. Debbe, T. G. Dedovich, A. A. Derevschikov, R. Derradi de Souza, L. Didenko, P. Djawotho, S. M. Dogra, X. Dong, J. L. Drachenberg, J. E. Draper, J. C. Dunlop, L. G. Efimov, M. Elnimr, J. Engelage, G. Eppley, M. Estienne, L. Eun, O. Evdokimov, R. Fatemi, J. Fedorisin, R. G. Fersch, P. Filip, E. Finch, V. Fine, Y. Fisyak, C. A. Gagliardi, D. R. Gangadharan, A. Geromitsos, F. Geurts, P. Ghosh, Y. N. Gorbunov, A. Gordon, O. G. Grebenyuk, D. Grosnick, S. M. Guertin, A. Gupta, W. Guryn, B. Haag, O. Hajkova, A. Hamed, L-X. Han, J. W. Harris, J. P. Hays-Wehle, M. Heinz, S. Heppelmann, A. Hirsch, E. Hjort, G. W. Hoffmann, D. J. Hofman, B. Huang, H. Z. Huang, T. J. Humanic, L. Huo, G. Igo, P. Jacobs, W. W. Jacobs, C. Jena, F. Jin, J. Joseph, E. G. Judd, S. Kabana, K. Kang, J. Kapitan, K. Kauder, H. W. Ke, D. Keane, A. Kechechyan, D. Kettler, D. P. Kikola, J. Kiryluk, A. Kisiel, V. Kizka, S. R. Klein, A. G. Knospe, D. D. Koetke, T. Kollegger, J. Konzer, I. Koralt, L. Koroleva, W. Korsch, L. Kotchenda, V. Kouchpil, P. Kravtsov, K. Krueger, M. Krus, L. Kumar, P. Kurnadi, M. A. C. Lamont, J. M. Landgraf, S. LaPointe, J. Lauret, A. Lebedev, R. Lednicky, J. H. Lee, W. Leight, M. J. LeVine, C. Li, L. Li, N. Li, W. Li, X. Li, Y. Li, Z. M. Li, M. A. Lisa, F. Liu, H. Liu, J. Liu, T. Ljubicic, W. J. Llope, R. S. Longacre, W. A. Love, Y. Lu, E. V. Lukashov, X. Luo, G. L. Ma, Y. G. Ma, D. P. Mahapatra, R. Majka, O. I. Mall, L. K. Mangotra, R. Manweiler, S. Margetis, C. Markert, H. Masui, H. S. Matis, Yu. A. Matulenko, D. McDonald, T. S. McShane, A. Meschanin, R. Milner, N. G. Minaev, S. Mioduszewski, A. Mischke, M. K. Mitrovski, Y. Mohammed, B. Mohanty, M. M. Mondal, B. Morozov, D. A. Morozov, M. G. Munhoz, M. K. Mustafa, M. Naglis, B. K. Nandi, T. K. Nayak, P. K. Netrakanti, L. V. Nogach, S. B. Nurushev, G. Odyniec, A. Ogawa, K. Oh, A. Ohlson, V. Okorokov, E. W. Oldag, D. Olson, M. Pachr, B. S. Page, S. K. Pal, Y. Pandit, Y. Panebratsev, T. Pawlak, H. Pei, T. Peitzmann, C. Perkins, W. Peryt, S. C. Phatak, P. Pile, M. Planinic, M. A. Ploskon, J. Pluta, D. Plyku, N. Poljak, A. M. Poskanzer, B. V. K. S. Potukuchi, C. B. Powell, D. Prindle, C. Pruneau, N. K. Pruthi, P. R. Pujahari, J. Putschke, H. Qiu, R. Raniwala, S. Raniwala, R. L. Ray, R. Redwine, R. Reed, H. G. Ritter, J. B. Roberts, O. V. Rogachevskiy, J. L. Romero, A. Rose, L. Ruan, J. Rusnak, N. R. Sahoo, S. Sakai, I. Sakrejda, S. Salur, J. Sandweiss, E. Sangaline, A. Sarkar, J. Schambach, R. P. Scharenberg, A. M. Schmah, N. Schmitz, T. R. Schuster, J. Seele, J. Seger, I. Selyuzhenkov, P. Seyboth, E. Shahaliev, M. Shao, M. Sharma, S. S. Shi, Q. Y. Shou, E. P. Sichtermann, F. Simon, R. N. Singaraju, M. J. Skoby, N. Smirnov, P. Sorensen, H. M. Spinka, B. Srivastava, T. D. S. Stanislaus, D. Staszak, S. G. Steadman, J. R. Stevens, R. Stock, M. Strikhanov, B. Stringfellow, A. A. P. Suaide, M. C. Suarez, N. L. Subba, M. Sumbera, X. M. Sun, Y. Sun, Z. Sun, B. Surrow, D. N. Svirida, T. J. M. Symons, A. Szanto de Toledo, J. Takahashi, A. H. Tang, Z. Tang, L. H. Tarini, T. Tarnowsky, D. Thein, J. H. Thomas, J. Tian, A. R. Timmins, D. Tlusty, M. Tokarev, T. A. Trainor, V. N. Tram, S. Trentalange, R. E. Tribble, P. Tribedy, O. D. Tsai, T. Ullrich, D. G. Underwood, G. Van Buren, G. van Nieuwenhuizen, J. A. Vanfossen, R. Varma, G. M. S. Vasconcelos, A. N. Vasiliev, F. Videbæk, Y. P. Viyogi, S. Vokal, S. A. Voloshin, M. Wada, M. Walker, F. Wang, G. Wang, H. Wang, J. S. Wang, Q. Wang, X. L. Wang, Y. Wang, G. Webb, J. C. Webb, G. D. Westfall, C. Whitten, H. Wieman, S. W. Wissink, R. Witt, W. Witzke, Y. F. Wu, Z. Xiao, W. Xie, H. Xu, N. Xu, Q. H. Xu, W. Xu, Y. Xu, Z. Xu, L. Xue, Y. Yang, P. Yepes, K. Yip, I-K. Yoo, M. Zawisza, H. Zbroszczyk, W. Zhan, J. B. Zhang, S. Zhang, W. M. Zhang, X. P. Zhang, Y. Zhang, Z. P. Zhang, J. Zhao, C. Zhong, W. Zhou, X. Zhu, Y. H. Zhu, R. Zoulkarneev, and Y. Zoulkarneeva
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Hadron, Particle accelerator, Elementary particle, Jet (particle physics), 01 natural sciences, Spectral line, law.invention, Nuclear physics, Deuterium, law, Pseudorapidity, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider
Abstract: We report first results from an analysis based on a new multi-hadron correlation technique, exploring jet-medium interactions and di-jet surface emission bias at the BNL Relativistic Heavy Ion Collider (RHIC). Pairs of back-to-back high-transverse-momentum hadrons are used for triggers to study associated hadron distributions. In contrast with two-and three-particle correlations with a single trigger with similar kinematic selections, the associated hadron distribution of both trigger sides reveals no modification in either relative pseudorapidity Delta eta or relative azimuthal angle Delta phi from d + Au to central Au + Au collisions. We determine associated hadron yields and spectra as well as production rates for such correlated back-to-back triggers to gain additional insights on medium properties.
Published: 2011

21. Erratum: Transverse Momentum and Centrality Dependence of High-pTNonphotonic Electron Suppression inAu+AuCollisions atsNN=200 GeV[Phys. Rev. Lett.98, 192301 (2007)]

Author: B. Haag, V. Ghazikhanian, A. Ridiger, L. K. Mangotra, P. Kurnadi, R. Manweiler, W. Christie, I. A. Qattan, Z. Chajecki, M. R. Cosentino, J. C. Dunlop, A. Kechechyan, Andre Mischke, A. I. Kulikov, C. Perkins, T. Peitzmann, F. Benedosso, Zubayer Ahammed, M. J. LeVine, C-Q. Li, M. J. Horner, Marek Bombara, Jana Bielcikova, J. L. Romero, Christine Nattrass, S. Heppelmann, R. P. Scharenberg, Christina Markert, W. M. Zhang, Andrey Vasiliev, Sergey Voloshin, H. S. Matis, T. G. Dedovich, R.J.M. Snellings, G. Eppley, G. Lin, R. V. Cadman, Jianhong Wu, P. S. Sazhin, E. Finch, L. Martin, Janet Elizabeth Seger, A. G. Knospe, Y. Wang, W. T. Waggoner, S. C. Phatak, A. Kumar, J. Speltz, J. Pluta, W. W. Jacobs, M. Kopytine, J. Fu, L. Liu, M. Tokarev, A. M. Hoffman, J. Baudot, J. Lauret, Sukalyan Chattopadhyay, Rene Bellwied, A. Stadnik, M. C. Suarez, L. Kotchenda, R. E. Tribble, A. Feng, D. J. Hofman, T. D. S. Stanislaus, H. H. Wieman, R. Lednicky, C. J. McClain, T. Kollegger, A. I. Pavlinov, M. DePhillips, Jay Roberts, N. S. Nepali, J. W. Mitchell, Gerald W Hoffmann, V. Fine, Lee Stuart Barnby, J. Engelage, Q. H. Xu, J. Takahashi, F. Liu, M. A. C. Lamont, A. V. Brandin, Jake Y. Chen, M. S. Ganti, K. Krueger, Ilya Selyuzhenkov, P. Djawotho, S. B. Nurushev, Jaroslav Bielcik, Premomoy Ghosh, T. J. Hallman, S. E. Vigdor, Christian Claude Kuhn, J. P. Coffin, M. Sarsour, Anthony Robert Timmins, Adam Ryszard Kisiel, R. N. Singaraju, A. P. Meschanin, H. J. Crawford, Michal Sumbera, D. Magestro, A. A. P. Suaide, B. D. Anderson, J. M. Landgraf, Mirko Planinic, M. R. Dutta Mazumdar, T. P. Burton, C. Roy, M. Strikhanov, F. Laue, R. D. Majka, P. Sorensen, O. V. Rogachevskiy, N. Schmitz, J. L. Drachenberg, E. Shahaliev, J. Sowinski, N. Xu, R. Fatemi, J. W. Harris, P. Filip, S. L. Blyth, M. Shao, G. Van Buren, Y. P. Lu, H. Zhang, M. S. Daugherity, Tai Sakuma, W. A. Love, Jie Liu, I. Sakrejda, F. Du, Camelia Mironov, A. M. Vander Molen, Thomas Dietel, E. Hjort, Y. F. Wu, L. V. Nogach, D. D. Koetke, G. Odyniec, J. Sandweiss, Y. Li, S. M. Guertin, J. Schambach, V. Perevoztchikov, N. T. Porile, J. X. Zuo, V. I. Kravtsov, Manish Sharma, R. Witt, H. Z. Huang, S. Vokal, S. Mioduszewski, V. Yu Khodyrev, S. Timoshenko, Sunil Dogra, E. W. Hughes, J. Callner, Madan M. Aggarwal, B. K. Srivastava, I. M. Vasilevski, T. W. Ludlam, Qian Yue, M. L. Miller, Fuqiang Wang, E. Potrebenikova, D. P. Mahapatra, Beomkyu Kim, Debasish Das, Y. Bai, R. S. Hollis, Anju Bhasin, S. LaPointe, O. G. Grebenyuk, D. Staszak, R. S. Longacre, M. Cherney, S. Bhardwaj, J. M. Nelson, Thomas Michael Cormier, Boris Hippolyte, B. V. K. S. Potukuchi, R. Varma, K. Kang, V. I. Yurevich, S. W. Wissink, A. A. Kuznetsov, K. L. Kowalik, Yu A. Matulenko, A. Wetzler, G. D. Westfall, W. L. Zhan, T. Ljubicic, J. S. Wang, J. Kiryluk, A. Lebedev, Frank Simon, M. M. de Moura, Y. G. Ma, W. Peryt, J. H. Chen, H. Gos, Raghunath Sahoo, Rajarshi Ray, B. Stringfellow, M. Botje, P. Yepes, V. Eckardt, T. S. McShane, Y. Zhang, A. Bellingeri-Laurikainen, Vitaly Okorokov, Y. Fisyak, J. Putschke, Petr Jákl, Bernd Surrow, G. Igo, M. Oldenburg, J. Ulery, J. W. Watson, Edmundo Javier Garcia-Solis, P. Chaloupka, S. Baumgart, D. A. Morozov, Nikola Poljak, Guo-Liang Ma, S. Lehocka, A. Ogawa, J. Bouchet, Pawan Kumar Netrakanti, W. J. Llope, H. F. Chen, Thomas A. Trainor, W. R. Edwards, Renaud Vernet, A. H. Tang, P. Seyboth, S. Trentalange, J. Millane, H. G. Ritter, C. A. Gagliardi, N. van der Kolk, H. Liu, A. Chikanian, H. Caines, Sudhir Raniwala, S. Kabana, Y. P. Viyogi, M. Pachr, Y. Zhao, B. I. Abelev, E. M. Kislov, J. E. Draper, J. G. Cramer, T. W. Henry, L. Gaillard, Z. P. Zhang, T. J. Humanic, D. Arkhipkin, A. Hamed, A. Shabetai, G. Wang, S. S. Shimanskiy, D. Relyea, Morton Kaplan, X. Z. Cai, A. Iordanova, Z. J. Sun, X. M. Sun, A. S. Hirsch, P. M. Jacobs, P. Kravtsov, N. G. Minaev, Bedangadas Mohanty, Basanta Kumar Nandi, X. L. Wang, A. M. Poskanzer, C. A. Whitten, L. Ruan, S. Margetis, A. Rose, S. Lange, S. J. Lindenbaum, M. van Leeuwen, X. Dong, Y. Panebratsev, L. C. Bland, D. Grosnick, V. Kouchpil, S. K. Pal, M. Bystersky, A. Bravar, E. P. Sichtermann, M. Calderon De La Barca Sanchez, J. Balewski, Rashmi Raniwala, Z. Z. Xu, O. Catu, Claude Andre Pruneau, Sadhana Dash, I. K. Yoo, Y. G. Gorbunov, Nikita Smirnov, T. Ullrich, A. Kocoloski, R. Zoulkarneev, Q. Li, M. Heinz, E. G. Judd, V. Emelianov, A. K. Bhati, D. Keane, R. Stock, L. G. Efimov, C-H. Lee, T. K. Nayak, B. E. Bonner, O. D. Tsai, W. Q. Shen, Sevil Salur, V. B. Dunin, J. Fedorisin, A. Szanto de Toledo, J. Kapitan, T. Pawlak, X. Lin, Russell Richard Betts, D. G. Underwood, J. Cheng, T. J. M. Symons, J. H. Thomas, D. Kettler, G. S. Averichev, H. M. Spinka, A. N. Zubarev, P. Fachini, K. S.F.F. Guimaraes, H. Bichsel, Y. Zoulkarneeva, C. Zhong, M. Potekhin, S. R. Klein, David Lynn, T. Tarnowsky, N. L. Subba, M. J. Russcher, O. Barannikova, D. L. Olson, J. C. Webb, A. A. Derevschikov, V. V. Belaga, F. Jia, W. He, Peter Graham Jones, L. Didenko, J. G. Ma, Jing Zhou, B. Erazmus, Neeraj Gupta, D. Cebra, M. Estienne, Yu Melnick, S. U. Chung, Marcelo Gameiro Munhoz, D. J. Prindle, and M. A. Lisa
Subjects: Nuclear physics, Physics, Quantum electrodynamics, Transverse momentum, General Physics and Astronomy, Elementary particle, Electron, Fermion, Centrality, Lepton
Published: 2011

22. HighpTnonphotonic electron production inp+pcollisions ats=200 GeV

Author: E. Hjort, Y. F. Wu, P. Chung, Wei Xie, G. M.S. Vasconcelos, Y. Pandit, N. Schmitz, E. Shahaliev, H. Liu, A. Chikanian, W. J. Llope, P. Sorensen, C-Q. Li, Jana Bielcikova, Prabhat Ranjan Pujahari, J. L. Romero, Q. H. Xu, B. Huang, Amal Sarkar, V. Fine, V. N. Tram, E. Finch, R. P. Scharenberg, Christina Markert, M. K. Mitrovski, Shoko Sakai, H. S. Matis, H. Agakishiev, L. Kotchenda, Olga Evdokimov, Russell Richard Betts, M. Shao, G. Van Buren, S. S. Shi, R. N. Singaraju, L. Huo, B. D. Anderson, Sergey Voloshin, N. K. Pruthi, M. Calderon De La Barca Sanchez, Xuan Zhang, Jie Liu, T. Kollegger, A. P. Meschanin, W. W. Jacobs, J. Lauret, E. V. Lukashov, D. G. Underwood, D. Thein, F. Liu, Jake Y. Chen, P. Seyboth, D. Tlusty, H. W. Ke, Jay Roberts, Hanna Paulina Zbroszczyk, M. J. Skoby, Frank Jm Geurts, Jifa Tian, J. G. Cramer, Y. G. Ma, W. Peryt, T. J. Humanic, E. Sangaline, D. Arkhipkin, R. Lednicky, A. Hamed, H. Z. Huang, S. Vokal, Y. Wang, Zhigang Xiao, R. Derradi de Souza, D. R. Beavis, A. G. Knospe, O. D. Tsai, M. Elnimr, M. C. Cervantes, K. Krueger, R. D. Majka, J. M. Joseph, Manish Sharma, J. L. Drachenberg, M. Heinz, M. Tokarev, J. Cheng, T. J. M. Symons, W. Borowski, J. Schambach, L. C. De Silva, N. G. Minaev, D. R. Gangadharan, Niladribihari Sahoo, T. P. Burton, Anju Bhasin, M. J. M. Codrington, Sevil Salur, I. G. Bordyuzhin, R. P. Redwine, Mirko Planinic, B. Haag, R. S. Longacre, M. K. Mustafa, K. Kang, E. Braidot, R. Reed, A. Lebedev, D. J. Hofman, M. M. Mondal, J. Alford, E. G. Judd, L. Li, T. D. S. Stanislaus, Guo-Liang Ma, W. Guryn, J. Seele, Nirbhay Kumar Behera, H. G. Ritter, P. Kurnadi, J. Takahashi, J. Kiryluk, J. H. Chen, N. Xu, E. W. Oldag, P. Filip, T. S. McShane, H. H. Wieman, A. K. Bhati, M. A. C. Lamont, S. B. Nurushev, O. I. Mall, Zebo Tang, C. B. Powell, G. J. van Nieuwenhuizen, Rajarshi Ray, D. Keane, Ross Milner, Michal Sumbera, A. A. P. Suaide, Y. N. Gorbunov, R. Stock, Y. Fisyak, L-X. Han, L. K. Mangotra, Mateusz Andrzej Ploskon, R. Witt, J. Fedorisin, Y. Li, Z. P. Zhang, L. C. Bland, G. Igo, S. M. Guertin, K. Oh, O. Hajkova, Z. Chajecki, P. Djawotho, L. G. Efimov, A. S. Hirsch, P. Pile, G. D. Westfall, Ascelin Gordon, R. Manweiler, W. Christie, P. M. Jacobs, P. Kravtsov, A. M. Schmah, J. Bouchet, S. W. Wissink, S. Mioduszewski, Matthew Walker, T. K. Nayak, X. L. Wang, D. A. Morozov, Y. Zhang, K. Kauder, W. Zhou, W. M. Zhang, Andrey Vasiliev, C. Perkins, P. Chaloupka, J. W. Harris, A. Gupta, Nikola Poljak, G. Wang, Y. Panebratsev, O. G. Grebenyuk, A. Szanto de Toledo, J. E. Draper, Donald M. McDonald, Y. F. Xu, B. V. K. S. Potukuchi, J. Kapitan, T. Peitzmann, S. Margetis, D. P. Mahapatra, D. Grosnick, V. Kouchpil, Haiyan Wang, C. D. Anson, X.G. Li, J. Engelage, Y. J. Sun, B. Morozov, A. Kechechyan, Andre Mischke, S. Trentalange, P. Yepes, Z. J. Sun, Prithwish Tribedy, Janet Elizabeth Seger, B. K. Srivastava, T. Pawlak, M. Krus, R. Cendejas, A. Davila Leyva, X. G. Luo, Bedangadas Mohanty, A. H. Tang, W. Witzke, Y. Mohammed, W. Xu, X. Z. Cai, X. M. Sun, Wolfgang Korsch, Z. Z. Xu, A. V. Alakhverdyants, F. Videbæk, S. G. Brovko, S. Heppelmann, S. Kabana, X. Dong, R. G. Fersch, G. Webb, A. Bridgeman, I. Bunzarov, T. G. Dedovich, Nikita Smirnov, A. Geromitsos, M. Wada, Sukalyan Chattopadhyay, J. Rusnak, S. C. Phatak, J. C. Dunlop, Y. P. Viyogi, Premomoy Ghosh, S. K. Pal, Justin Stevens, I-K. Yoo, J. Putschke, Xiaofeng Zhu, Basanta Kumar Nandi, S. Zhang, Zubayer Ahammed, M. J. LeVine, C. A. Whitten, B. Biritz, J. M. Landgraf, Chitrasen Jena, Feng Jin, Y. P. Lu, L. Ruan, M. C. Suarez, D. N. Svirida, Sunil Dogra, A. M. Poskanzer, Q. Y. Shou, I. Koralt, A. Ogawa, L. V. Nogach, M. Strikhanov, S. Bueltmann, R. Corliss, Jongmin Lee, H. F. Chen, Thomas A. Trainor, A. Rose, Elena Bruna, J. Konzer, William Axel Leight, D. Staszak, Ilya Selyuzhenkov, R. Varma, T. Ljubicic, Ki-Seok Choi, James Prewitt Hays-Wehle, Yu A. Matulenko, B. S. Page, H. Caines, Sudhir Raniwala, D. P. Kikola, G. Odyniec, J. Sandweiss, E. P. Sichtermann, B. Stringfellow, J. Balewski, Rashmi Raniwala, Claude Andre Pruneau, Sadhana Dash, T. Ullrich, R. Zoulkarneev, H. S. Xu, L. Eun, Vitaly Okorokov, Bernd Surrow, Pawan Kumar Netrakanti, C. A. Gagliardi, M. Pachr, Madan M. Aggarwal, Fuqiang Wang, W. L. Zhan, Frank Simon, Jaroslav Bielcik, Jie Zhang, O. V. Rogachevskiy, A. V. Brandin, W. A. Love, D. D. Koetke, L. Xue, Li-Zhu Chen, G. Eppley, J. Pluta, W. Li, Rene Bellwied, Y. H. Zhu, R. E. Tribble, Jize Zhao, Gerald W Hoffmann, I. Sakrejda, Y. Yang, S. LaPointe, N. Li, D. Cebra, K. Yip, J. S. Wang, R. R. Debbe, M. Estienne, S. G. Steadman, H. Bichsel, Y. Zoulkarneeva, C. Zhong, M. Naglis, Q. Wang, T. R. Schuster, J. C. Webb, Hao Qiu, Marcelo Gameiro Munhoz, D. J. Prindle, I. G. Alekseev, Donika Plyku, M. A. Lisa, R. Fatemi, Michael Joseph Betancourt, J. A. Vanfossen, L. H. Tarini, Zhiming Li, L. Koroleva, M. Cherney, Lokesh Kumar, Hua Pei, Alice Elisabeth Ohlson, V. A. Kizka, J. H. Thomas, D. Kettler, Anthony Robert Timmins, Adam Ryszard Kisiel, G. S. Averichev, H. J. Crawford, M. Zawisza, H. M. Spinka, H. Masui, L. Didenko, S. R. Klein, T. Tarnowsky, N. L. Subba, D. L. Olson, and A. A. Derevschikov
Subjects: Quantum chromodynamics, Physics, Nuclear and High Energy Physics, Particle physics, Meson, 010308 nuclear & particles physics, Star (game theory), Electron, 01 natural sciences, 0103 physical sciences, Transverse momentum, High Energy Physics::Experiment, Production (computer science), Nuclear Experiment, 010306 general physics
Abstract: We present the measurement of nonphotonic electron production at high transverse momentum (${p}_{T}g2.5\text{ }\text{ }\mathrm{GeV}/c$) in $p+p$ collisions at $\sqrt{s}=200\text{ }\text{ }\mathrm{GeV}$ using data recorded during 2005 and 2008 by the STAR experiment at the Relativistic Heavy Ion Collider (RHIC). The measured cross sections from the two runs are consistent with each other despite a large difference in photonic background levels due to different detector configurations. We compare the measured nonphotonic electron cross sections with previously published RHIC data and perturbative quantum chromodynamics calculations. Using the relative contributions of B and D mesons to nonphotonic electrons, we determine the integrated cross sections of electrons ($\frac{{e}^{+}+{e}^{\ensuremath{-}}}{2}$) at $3\text{ }\text{ }\mathrm{GeV}/cl{p}_{T}l10\text{ }\text{ }\mathrm{GeV}/c$ from bottom and charm meson decays to be $[(d{\ensuremath{\sigma}}_{(B\ensuremath{\rightarrow}e)+(B\ensuremath{\rightarrow}D\ensuremath{\rightarrow}e)})/(d{y}_{e}){]}_{{y}_{e}=0}=4.0\ifmmode\pm\else\textpm\fi{}0.5(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}1.1(\mathrm{syst})\text{ }\text{ }\mathrm{nb}$ and $[(d{\ensuremath{\sigma}}_{D\ensuremath{\rightarrow}e})/(d{y}_{e}){]}_{{y}_{e}=0}=6.2\ifmmode\pm\else\textpm\fi{}0.7(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}1.5(\mathrm{syst})\text{ }\text{ }\mathrm{nb}$, respectively.
Published: 2011

23. Observation of the antimatter helium-4 nucleus

Author: H. Xu, M. Wada, B. Haag, I. G. Alekseev, B. Stringfellow, Donika Plyku, Zhigang Xiao, Zhuang Li, A. Hamed, Yaping Wang, M. A. Lisa, W. Korsch, N. G. Minaev, G. Igo, D. Staszak, E. Sangaline, Subhasis Chattopadhyay, W. Peryt, J. Joseph, O. D. Tsai, R. Corliss, Jana Bielcikova, J. Bouchet, N. Li, Zhi Ping Xu, Brian Page, Gene-Jack Wang, Elena Bruna, T. D.S. Stanislaus, Jorn Henning Putschke, C. Perkins, W. W. Jacobs, P. K. Netrakanti, Jie Zhao, V. Kouchpil, A. Szanto de Toledo, A. V. Brandin, H. M. Spinka, J. Kapitan, N. K. Behera, T. J.M. Symons, H. Agakishiev, T. Pawlak, R. Witt, A. V. Alakhverdyants, J. H. Thomas, S. Mioduszewski, L. H. Tarini, T. A. Trainor, P. R. Pujahari, P. Filip, J. Alford, Jaroslav Bielcik, G. D. Westfall, W. Christie, M. Sharma, H. Wieman, L. Ruan, M. K. Mustafa, M. Sumbera, J. H. Lee, C. D. Anson, O. I. Mall, I. Koralt, V. Fine, S. Bueltmann, J. Schambach, J. Fedorisin, Xiaofeng Luo, D. Tlusty, Yang Wu, P. Pile, S. M. Guertin, Alexandre Alarcon Do Passo Suaide, Z. Tang, Abhishek Sarkar, S. M. Dogra, G. S. Averichev, A. M. Poskanzer, L. Eun, H. S. Matis, R. Majka, Bedangadas Mohanty, D. P. Mahapatra, Y. Lu, T. Ljubicic, N. K. Pruthi, H. Z. Huang, F. Videbaek, N. L. Subba, R. G. Fersch, A. Kechechyan, M. Elnimr, J. Balewski, J. E. Draper, Frank Jm Geurts, Rashmi Raniwala, T. Tarnowsky, E. Hjort, Shenghui Zhang, P. Djawotho, S. Heppelmann, A. R. Timmins, Claude Andre Pruneau, M. Planinic, He Liu, L. Li, G. Van Buren, L. Kotchenda, Jake Y. Chen, C. Li, L. Huo, A. M. Schmah, L. Koroleva, Mitali Mondal, O. V. Rogachevskiy, M. Krus, R. Cendejas, H. Wang, William Axel Leight, C. Zhong, A. Lebedev, D. Prindle, M. K. Mitrovski, I. G. Bordyuzhin, M. Calderon, D. Cebra, T. Ullrich, Zhi-Jun Sun, I. Sakrejda, S. Voloshin, C. B. Powell, L. C. De Silva, Li-Zhu Chen, E. Finch, Y. Sun, R. Zoulkarneev, J. Seger, K. Oh, D. J. Hofman, S. Vokal, Wei Xie, D. R. Beavis, Hanna Paulina Zbroszczyk, S. Margetis, P. Kurnadi, Nilay Shah, X. L. Wang, Bernd Surrow, D. Solanki, M. Strikhanov, A. P. Meschanin, K. E. Choi, S. S. Shi, Xianglei Zhu, Hank Crawford, G. W. Hoffmann, A. A. Derevschikov, B. D. Anderson, Jing-Han Chen, A. G. Knospe, F. Jin, D. Keane, I. K. Yoo, C. A. Gagliardi, M. Pachr, G. Webb, K. Yip, E. W. Oldag, L. V. Nogach, Andreas Hirsch, R. Lednicky, H. W. Ke, A. Chikanian, R. R. Debbe, Jinbao Liu, G. Van Nieuwenhuizen, M. C. Suarez, Baoyu Huang, X. Dong, Y. N. Gorbunov, Madan M. Aggarwal, H. Bichsel, T. Kollegger, Y. Zoulkarneeva, G. L. Ma, Fuqiang Wang, M. Tokarev, M. G. Munhoz, S. G. Brovko, Justin Stevens, O. Hajkova, P. Kravtsov, Y. Yang, W. J. Llope, I. Selyuzhenkov, J. Takahashi, D. A. Morozov, S. Lapointe, L. X. Han, G. Eppley, Xu Cai, J. Pluta, E. Braidot, W. Li, W. Witzke, K. Krueger, Peter Martin Jacobs, S. Salur, R. Stock, P. Chung, M. Ploskon, Adam Ryszard Kisiel, P. Chaloupka, Rama Narayana Singaraju, Ron Longacre, M. A.C. Lamont, Q. Wang, W. L. Zhan, S. B. Nurushev, R. P. Scharenberg, Frank Simon, A. Ohlson, R. Fatemi, Michael Joseph Betancourt, Y. H. Zhu, R. E. Tribble, S. Trentalange, H. F. Chen, F. Liu, Sudhir Raniwala, Jianping Cheng, A. K. Bhati, J. Konzer, Z. Chajecki, A. Gordon, Nikolai Smirnov, M. Estienne, J. C. Webb, T. G. Dedovich, Xiaoping Zhang, Thomas Peitzmann, J. Sandweiss, J. Tian, D. McDonald, P. Sorensen, M. Zawisza, L. G. Efimov, M. Naglis, J. Seele, C. W.C. Whitten, J. Rusnak, R. Bellwied, M. Cherney, F. Zhao, N. R. Sahoo, B. V.K.S. Potukuchi, T. K. Nayak, Yu-Gang Ma, P. Seyboth, E. V. Lukashov, N. Schmitz, M. J. Skoby, Y. Fisyak, W. M. Zhang, L. C. Bland, T. R. Schuster, L. Didenko, Y. Zhang, G. M.S. Vasconcelos, J. B. Zhang, A. Ogawa, Y. Panebratsev, D. Grosnick, X. M. Sun, M. Shao, J. W. Harris, W. Zhou, O. G. Grebenyuk, W. Borowski, Y. Mohammed, J. A. Vanfossen, P. Yepes, A. Davila Leyva, D. Arkhipkin, A. H. Tang, J. Lauret, S. G. Steadman, I. Bunzarov, R. Manweiler, M. Heinz, Dave Underwood, D. N. Svirida, S. Pal, R. L. Ray, W. A. Love, Y. Xu, H. G. Ritter, J. Porter, S. Gupta, H. Pei, Andrey Vasiliev, M. C. Cervantes, Lokesh Kumar, Nu Xu, E. P. Sichtermann, D. D. Koetke, B. Morozov, N. Poljak, W. Xu, J. Kiryluk, Anju Bhasin, C. Jena, Basanta Kumar Nandi, D. Kettler, T. P. Burton, R. P. Redwine, H. Masui, K. Kang, R. Derradi de Souza, E. G. Judd, R. R. Betts, V. A. Okorokov, E. Shahaliev, J. C. Dunlop, Zubayer Ahammed, H. Qiu, Jian-Song Wang, Q. Y. Shou, M. J. Levine, R. Milner, B. Biritz, J. L. Romero, Xiao Li, Prithwish Tribedy, B. K. Srivastava, A. Gupta, Z. P. Zhang, J. L. Drachenberg, Liang Xue, Olga Evdokimov, J. Engelage, Jay Roberts, A. Bridgeman, Premomoy Ghosh, D. Olson, W. Guryn, H. Caines, D. Thein, Christina Markert, V. Kizka, J. G. Cramer, G. Odyniec, R. Reed, S. W. Wissink, Matthew Walker, S. R. Klein, Q. H. Xu, Y. P. Viyogi, Yanjun Li, Y. Pandit, S. Kabana, R. Varma, James Prewitt Hays-Wehle, Yu A. Matulenko, D. P. Kikola, T. S. McShane, K. Kauder, J. M. Landgraf, M. J.M. Codrington, Thomas Humanic, D. R. Gangadharan, Massachusetts Institute of Technology. Laboratory for Nuclear Science, Massachusetts Institute of Technology. Department of Physics, Massachusetts Institute of Technology. Department of Materials Science and Engineering, Laboratoire SUBATECH Nantes (SUBATECH), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Nantes (UN)-Mines Nantes (Mines Nantes), and STAR
Subjects: Particle physics, Physics::General Physics, media_common.quotation_subject, Nuclear Theory, FOS: Physical sciences, Cosmic ray, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, 01 natural sciences, Nuclear physics, Nucleosynthesis, 0103 physical sciences, Nuclear Experiment (nucl-ex), 010306 general physics, Antihydrogen, Nuclear Experiment, media_common, Physics, Multidisciplinary, Annihilation, 010308 nuclear & particles physics, Universe, 13. Climate action, Antiproton, Antimatter, Relativistic Heavy Ion Collider
Abstract: High-energy nuclear collisions create an energy density similar to that of the universe microseconds after the Big Bang, and in both cases, matter and antimatter are formed with comparable abundance. However, the relatively short-lived expansion in nuclear collisions allows antimatter to decouple quickly from matter, and avoid annihilation. Thus, a high energy accelerator of heavy nuclei is an efficient means of producing and studying antimatter. The antimatter helium-4 nucleus ($^4\bar{He}$), also known as the anti-{\alpha} ($\bar{\alpha}$), consists of two antiprotons and two antineutrons (baryon number B=-4). It has not been observed previously, although the {\alpha} particle was identified a century ago by Rutherford and is present in cosmic radiation at the 10% level. Antimatter nuclei with B < -1 have been observed only as rare products of interactions at particle accelerators, where the rate of antinucleus production in high-energy collisions decreases by about 1000 with each additional antinucleon. We present the observation of the antimatter helium-4 nucleus, the heaviest observed antinucleus. In total 18 $^4\bar{He}$ counts were detected at the STAR experiment at RHIC in 10$^9$ recorded Au+Au collisions at center-of-mass energies of 200 GeV and 62 GeV per nucleon-nucleon pair. The yield is consistent with expectations from thermodynamic and coalescent nucleosynthesis models, which has implications beyond nuclear physics., Comment: 19 pages, 4 figures. Submitted to Nature. Under media embargo
Published: 2011

24. Measurement of the Parity-Violating Longitudinal Single-Spin Asymmetry forW±Boson Production in Polarized Proton-Proton Collisions ats=500 GeV

Author: L. C. Bland, X. L. Wang, Mateusz Andrzej Ploskon, R. Witt, S. Margetis, S. G. Brovko, Madan M. Aggarwal, Fuqiang Wang, M. C. Suarez, D. N. Svirida, S. Mioduszewski, M. van Leeuwen, X. Dong, Donald M. McDonald, S. K. Pal, Justin Stevens, B. K. Srivastava, W. L. Zhan, Frank Simon, I. Selyuzhenkov, Vitaly Okorokov, B. V. K. S. Potukuchi, Bernd Surrow, Pawan Kumar Netrakanti, Jorn Henning Putschke, A. V. Brandin, J. C. Dunlop, Zubayer Ahammed, M. J. LeVine, C. A. Gagliardi, W. Xu, J. L. Drachenberg, Olga Evdokimov, M. Pachr, Jay Roberts, Y. Panebratsev, D. Grosnick, V. Kouchpil, E. P. Sichtermann, J. Engelage, L. K. Mangotra, R. Manweiler, Hongfang Liu, Wolfgang Korsch, Xuan Zhang, J. Balewski, Rashmi Raniwala, M. Heinz, Jie Liu, Thorsten Sven Kollegger, Claude Andre Pruneau, L. Kotchenda, A. Geromitsos, I. Sakrejda, Q. H. Xu, Jaroslav Bielcik, Premomoy Ghosh, A. M. Poskanzer, Jie Zhang, T. Ullrich, Yi Zhang, J. M. Landgraf, R. N. Singaraju, S. Heppelmann, M. R. Dutta Mazumdar, R. Zoulkarneev, L. Huo, M. Strikhanov, Rolf K. Reed, O. V. Rogachevskiy, A. P. Meschanin, Russell Richard Betts, Hanna Paulina Zbroszczyk, Y. Yang, J. Konzer, A. Kechechyan, Andre Mischke, L. H. Tarini, Mitali Mondal, H. G. Ritter, S. LaPointe, N. Li, A. Gordon, H. S. Xu, L. Eun, D. R. Beavis, W. A. Love, D. D. Koetke, Ki-Seok Choi, J. Sandweiss, Jongmin Lee, O. D. Tsai, R. Bellwied, M. Krus, L. Xue, R. L. Ray, R. Fatemi, Michael Joseph Betancourt, R. S. Longacre, J. E. Draper, D. G. Underwood, R. Cendejas, Xiaofeng Zhu, I. Koralt, L. Koroleva, M. Elnimr, D. Thein, D. Staszak, Zhiming Li, K. Krueger, K. Yip, J. S. Wang, S. Bueltmann, T. Ljubicic, M. C. Cervantes, J. A. Vanfossen, L. V. Nogach, M. J. Ng, R. R. Debbe, G. Igo, H. Caines, Sudhir Raniwala, J. Bouchet, Michal Sumbera, A. A. P. Suaide, G. Wang, K. Kauder, G. Van Nieuwenhuizen, A. Ogawa, O. I. Mall, M. Cherney, Y. Li, V. Fine, Andrew Rose, Sergey Voloshin, M. Tokarev, Lokesh Kumar, Xiangming Sun, S. M. Guertin, H. F. Chen, M. A.C. Lamont, L-X. Han, D. R. Gangadharan, E. V. Lukashov, J. Cheng, V. A. Kizka, J. H. Thomas, T. S. McShane, Jake Y. Chen, Thomas A. Trainor, Sevil Salur, H. Z. Huang, S. Vokal, M. Sharma, D. P. Mahapatra, T. J. M. Symons, P. Kurnadi, B. Huang, T. D. S. Stanislaus, Z. J. Sun, L. C. De Silva, H. H. Wieman, S. W. Wissink, Elena Bruna, N. G. Minaev, A. K. Bhati, D. Keane, T. G. Dedovich, Nikolai Smirnov, T. Sakuma, S. C. Phatak, R. Stock, Ermes Braidot, L. G. Efimov, W. Zhou, Shingo Sakai, D. Tlusty, Mirko Planinic, C-H. Lee, T. K. Nayak, P. Seyboth, Adam Ryszard Kisiel, J. Kiryluk, J. H. Chen, Nikola Poljak, D. Kettler, Marcelo Gameiro Munhoz, D. J. Prindle, H. J. Crawford, N. Xu, J. C. Webb, A. Szanto de Toledo, J. Kapitan, P. Pile, G. D. Westfall, Y. Wang, B. D. Anderson, D. A. Morozov, A. R. Timmins, S. M. Dogra, G. S. Averichev, Y. N. Gorbunov, F. Videbæk, G. Webb, T. Pawlak, N. K. Pruthi, C-Q. Li, Matthew Walker, R. Derradi de Souza, A. V. Alakhverdyants, Sukalyan Chattopadhyay, R. P. Scharenberg, Christina Markert, M. K. Mitrovski, X. Li, H. S. Matis, G. Eppley, I. G. Alekseev, J. Alford, W. Guryn, M. J. M. Codrington, W. J. Llope, Donika Plyku, M. S. Ganti, W. W. Jacobs, O. G. Grebenyuk, J. Lauret, M. A. Lisa, J. Pluta, I. K. Yoo, J. L. Romero, M. Zawisza, H. M. Spinka, Chitrasen Jena, Y. P. Lu, C. A. Whitten, Feng Jin, L. Ruan, R. Lednicky, J. Fedorisin, R. Corliss, T. Tarnowsky, P. Djawotho, Y. J. Sun, W. Li, P. R. Pujahari, C. B. Powell, A. G. Knospe, Y. Fisyak, E. Finch, A. Ohlson, S. Kabana, Y. H. Zhu, R. E. Tribble, Jize Zhao, E. G. Judd, Y. P. Viyogi, Guo-Liang Ma, Gerald W Hoffmann, C. D. Anson, B. Erazmus, Z. P. Zhang, A. S. Hirsch, Bedangadas Mohanty, P. Kravtsov, A. M. Schmah, D. Cebra, M. Estienne, P. Chung, M. Calderón DeLaBarca Sánchez, J. G. Cramer, R. G. Fersch, Wei Xie, H. Bichsel, G. Odyniec, Y. Zoulkarneeva, C. Zhong, M. Wada, William Axel Leight, J. Joseph, G. M.S. Vasconcelos, Q. Wang, T. R. Schuster, S. R. Klein, Hao Qiu, Y. Pandit, N. L. Subba, E. W. Oldag, N. Schmitz, D. L. Olson, A. Bridgeman, E. Shahaliev, T. J. Humanic, Qian Yue, R. Varma, James Prewitt Hays-Wehle, Yu A. Matulenko, B. S. Page, D. P. Kikola, B. Stringfellow, A. A. Derevschikov, E. Hjort, Y. F. Wu, Jana Bielcikova, L. Li, S. Timoshenko, J. Seele, P. Sorensen, J. W. Harris, P. Yepes, A. Davila Leyva, X. G. Luo, A. H. Tang, I. Bunzarov, L. Didenko, A. Kocoloski, S. Dash, A. Chikanian, V. N. Tram, Anik Gupta, W. Christie, W. M. Zhang, Andrey Vasiliev, M. J. Skoby, Frank Jm Geurts, Jifa Tian, B. Morozov, Janet Elizabeth Seger, Haiyan Wang, B. Haag, X. Z. Cai, Zebo Tang, Z. Chajecki, David Jonathan Hofman, H. Masui, F. Liu, C. Perkins, T. Peitzmann, Peter Martin Jacobs, J. Takahashi, S. B. Nurushev, R. D. Majka, M. Shao, G. Van Buren, W. Borowski, S. S. Shi, J. Schambach, Anju Bhasin, R. P. Redwine, K. Kang, Y. G. Ma, W. Peryt, A. Lebedev, Ross Milner, E. Sangaline, D. Arkhipkin, A. Hamed, T. P. Burton, Y. Xu, P. Chaloupka, Z. J. Xu, S. Trentalange, M. Naglis, Basanta Kumar Nandi, S. Zhang, and B. Biritz
Subjects: Quark, Physics, Particle physics, Antiparticle, 010308 nuclear & particles physics, General Physics and Astronomy, Elementary particle, Inelastic scattering, Deep inelastic scattering, 01 natural sciences, Nuclear physics, Antimatter, 0103 physical sciences, High Energy Physics::Experiment, Astrophysics::Earth and Planetary Astrophysics, Nuclear Experiment, 010306 general physics, Lepton, Boson
Abstract: We report the first measurement of the parity-violating single-spin asymmetries for midrapidity decay positrons and electrons from W+ and W- boson production in longitudinally polarized proton-proton collisions at root s = 500 GeV by the STAR experiment at RHIC. The measured asymmetries, A(L)(W+) = -0.27 +/- 0.10(stat.) +/- 0.02(syst.) +/- 0.03(norm.) and A(L)(W-) = 0.14 +/- 0.19(stat.) +/- 0.02(syst.) +/- 0.01(norm.), are consistent with theory predictions, which are large and of opposite sign. These predictions are based on polarized quark and antiquark distribution functions constrained by polarized deep-inelastic scattering measurements.
Published: 2011

25. Strange and multistrange particle production in Au + Au collisions atsNN=62.4 GeV

Author: M. M. Aggarwal, Z. Ahammed, A. V. Alakhverdyants, I. Alekseev, J. Alford, B. D. Anderson, C. D. Anson, D. Arkhipkin, G. S. Averichev, J. Balewski, D. R. Beavis, R. Bellwied, M. J. Betancourt, R. R. Betts, A. Bhasin, A. K. Bhati, H. Bichsel, J. Bielcik, J. Bielcikova, B. Biritz, L. C. Bland, W. Borowski, J. Bouchet, E. Braidot, A. V. Brandin, A. Bridgeman, S. G. Brovko, E. Bruna, S. Bueltmann, I. Bunzarov, T. P. Burton, X. Z. Cai, H. Caines, M. Calderón de la Barca Sánchez, D. Cebra, R. Cendejas, M. C. Cervantes, Z. Chajecki, P. Chaloupka, S. Chattopadhyay, H. F. Chen, J. H. Chen, J. Y. Chen, J. Cheng, M. Cherney, A. Chikanian, K. E. Choi, W. Christie, P. Chung, M. J. M. Codrington, R. Corliss, J. G. Cramer, H. J. Crawford, S. Dash, A. Davila Leyva, L. C. De Silva, R. R. Debbe, T. G. Dedovich, A. A. Derevschikov, R. Derradi de Souza, L. Didenko, P. Djawotho, S. M. Dogra, X. Dong, J. L. Drachenberg, J. E. Draper, J. C. Dunlop, M. R. Dutta Mazumdar, L. G. Efimov, M. Elnimr, J. Engelage, G. Eppley, M. Estienne, L. Eun, O. Evdokimov, R. Fatemi, J. Fedorisin, R. G. Fersch, E. Finch, V. Fine, Y. Fisyak, C. A. Gagliardi, D. R. Gangadharan, A. Geromitsos, F. Geurts, P. Ghosh, Y. N. Gorbunov, A. Gordon, O. Grebenyuk, D. Grosnick, S. M. Guertin, A. Gupta, W. Guryn, B. Haag, O. Hajkova, A. Hamed, L-X. Han, J. W. Harris, J. P. Hays-Wehle, M. Heinz, S. Heppelmann, A. Hirsch, E. Hjort, G. W. Hoffmann, D. J. Hofman, B. Huang, H. Z. Huang, T. J. Humanic, L. Huo, G. Igo, P. Jacobs, W. W. Jacobs, C. Jena, F. Jin, J. Joseph, E. G. Judd, S. Kabana, K. Kang, J. Kapitan, K. Kauder, D. Keane, A. Kechechyan, D. Kettler, D. P. Kikola, J. Kiryluk, A. Kisiel, V. Kizka, S. R. Klein, A. G. Knospe, D. D. Koetke, T. Kollegger, J. Konzer, I. Koralt, L. Koroleva, W. Korsch, L. Kotchenda, V. Kouchpil, P. Kravtsov, K. Krueger, M. Krus, L. Kumar, P. Kurnadi, M. A. C. Lamont, J. M. Landgraf, S. LaPointe, J. Lauret, A. Lebedev, R. Lednicky, J. H. Lee, W. Leight, M. J. LeVine, C. Li, L. Li, N. Li, W. Li, X. Li, Y. Li, Z. M. Li, M. A. Lisa, F. Liu, H. Liu, J. Liu, T. Ljubicic, W. J. Llope, R. S. Longacre, W. A. Love, Y. Lu, E. V. Lukashov, X. Luo, G. L. Ma, Y. G. Ma, D. P. Mahapatra, R. Majka, O. I. Mall, L. K. Mangotra, R. Manweiler, S. Margetis, C. Markert, H. Masui, H. S. Matis, Yu. A. Matulenko, D. McDonald, T. S. McShane, A. Meschanin, R. Milner, N. G. Minaev, S. Mioduszewski, A. Mischke, M. K. Mitrovski, B. Mohanty, M. M. Mondal, B. Morozov, D. A. Morozov, M. G. Munhoz, M. Naglis, B. K. Nandi, T. K. Nayak, P. K. Netrakanti, M. J. Ng, L. V. Nogach, S. B. Nurushev, G. Odyniec, A. Ogawa, K. Oh, A. Ohlson, V. Okorokov, E. W. Oldag, D. Olson, M. Pachr, B. S. Page, S. K. Pal, Y. Pandit, Y. Panebratsev, T. Pawlak, H. Pei, T. Peitzmann, C. Perkins, W. Peryt, S. C. Phatak, P. Pile, M. Planinic, M. A. Ploskon, J. Pluta, D. Plyku, N. Poljak, A. M. Poskanzer, B. V. K. S. Potukuchi, C. B. Powell, D. Prindle, C. Pruneau, N. K. Pruthi, P. R. Pujahari, J. Putschke, H. Qiu, R. Raniwala, S. Raniwala, R. L. Ray, R. Redwine, R. Reed, H. G. Ritter, J. B. Roberts, O. V. Rogachevskiy, J. L. Romero, A. Rose, L. Ruan, J. Rusnak, S. Sakai, I. Sakrejda, T. Sakuma, S. Salur, J. Sandweiss, E. Sangaline, J. Schambach, R. P. Scharenberg, A. M. Schmah, N. Schmitz, T. R. Schuster, J. Seele, J. Seger, I. Selyuzhenkov, P. Seyboth, E. Shahaliev, M. Shao, M. Sharma, S. S. Shi, E. P. Sichtermann, F. Simon, R. N. Singaraju, M. J. Skoby, N. Smirnov, P. Sorensen, J. Speltz, H. M. Spinka, B. Srivastava, T. D. S. Stanislaus, D. Staszak, S. G. Steadman, J. R. Stevens, R. Stock, M. Strikhanov, B. Stringfellow, A. A. P. Suaide, M. C. Suarez, N. L. Subba, M. Sumbera, X. M. Sun, Y. Sun, Z. Sun, B. Surrow, D. N. Svirida, T. J. M. Symons, A. Szanto de Toledo, J. Takahashi, A. H. Tang, Z. Tang, L. H. Tarini, T. Tarnowsky, D. Thein, J. H. Thomas, J. Tian, A. R. Timmins, D. Tlusty, M. Tokarev, T. A. Trainor, V. N. Tram, S. Trentalange, R. E. Tribble, P. Tribedy, O. D. Tsai, T. Ullrich, D. G. Underwood, G. Van Buren, G. van Nieuwenhuizen, J. A. Vanfossen, R. Varma, G. M. S. Vasconcelos, A. N. Vasiliev, F. Videbæk, Y. P. Viyogi, S. Vokal, S. A. Voloshin, M. Wada, M. Walker, F. Wang, G. Wang, H. Wang, J. S. Wang, Q. Wang, X. L. Wang, Y. Wang, G. Webb, J. C. Webb, G. D. Westfall, C. Whitten, H. Wieman, S. W. Wissink, R. Witt, W. Witzke, Y. F. Wu, W. Xie, H. Xu, N. Xu, Q. H. Xu, W. Xu, Y. Xu, Z. Xu, L. Xue, Y. Yang, P. Yepes, K. Yip, I-K. Yoo, Q. Yue, M. Zawisza, H. Zbroszczyk, W. Zhan, J. B. Zhang, S. Zhang, W. M. Zhang, X. P. Zhang, Y. Zhang, Z. P. Zhang, J. Zhao, C. Zhong, W. Zhou, X. Zhu, Y. H. Zhu, R. Zoulkarneev, and Y. Zoulkarneeva
Subjects: Physics, Nuclear and High Energy Physics, Meson, 010308 nuclear & particles physics, Nuclear Theory, Hadron, Elementary particle, Strangeness, 01 natural sciences, 7. Clean energy, Omega, Baryon, Nuclear physics, Antimatter, 0103 physical sciences, Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider
Abstract: We present results on strange and multistrange particle production in Au + Au collisions at root s(NN) = 62.4 GeV as measured with the STAR detector at RHIC. Midrapidity transverse momentum spectra and integrated yields of K-S(0), Lambda, Xi, and Omega and their antiparticles are presented for different centrality classes. The particle yields and ratios follow a smooth energy dependence. Chemical freeze-out parameters, temperature, baryon chemical potential, and strangeness saturation factor obtained from the particle yields are presented. Intermediate transverse momentum (p(T)) phenomena are discussed based on the ratio of the measured baryon-to-meson spectra and nuclear modification factor. The centrality dependence of various measurements presented show a similar behavior as seen in Au + Au collisions at root s(NN) = 200 GeV.
Published: 2011

26. Scaling properties at freeze-out in relativistic heavy-ion collisions

Author: M. M. Aggarwal, Z. Ahammed, A. V. Alakhverdyants, I. Alekseev, J. Alford, B. D. Anderson, C. D. Anson, D. Arkhipkin, G. S. Averichev, J. Balewski, L. S. Barnby, D. R. Beavis, R. Bellwied, M. J. Betancourt, R. R. Betts, A. Bhasin, A. K. Bhati, H. Bichsel, J. Bielcik, J. Bielcikova, B. Biritz, L. C. Bland, W. Borowski, J. Bouchet, E. Braidot, A. V. Brandin, A. Bridgeman, E. Bruna, S. Bueltmann, I. Bunzarov, T. P. Burton, X. Z. Cai, H. Caines, M. Calderón de la Barca Sánchez, D. Cebra, R. Cendejas, M. C. Cervantes, Z. Chajecki, P. Chaloupka, S. Chattopadhyay, H. F. Chen, J. H. Chen, J. Y. Chen, J. Cheng, M. Cherney, A. Chikanian, K. E. Choi, W. Christie, P. Chung, M. J. M. Codrington, R. Corliss, J. G. Cramer, H. J. Crawford, S. Dash, A. Davila Leyva, L. C. De Silva, R. R. Debbe, T. G. Dedovich, A. A. Derevschikov, R. Derradi de Souza, L. Didenko, P. Djawotho, S. M. Dogra, X. Dong, J. L. Drachenberg, J. E. Draper, J. C. Dunlop, M. R. Dutta Mazumdar, L. G. Efimov, M. Elnimr, J. Engelage, G. Eppley, B. Erazmus, M. Estienne, L. Eun, O. Evdokimov, R. Fatemi, J. Fedorisin, R. G. Fersch, E. Finch, V. Fine, Y. Fisyak, C. A. Gagliardi, D. R. Gangadharan, M. S. Ganti, A. Geromitsos, F. Geurts, P. Ghosh, Y. N. Gorbunov, A. Gordon, O. Grebenyuk, D. Grosnick, S. M. Guertin, A. Gupta, W. Guryn, B. Haag, A. Hamed, L-X. Han, J. W. Harris, J. P. Hays-Wehle, M. Heinz, S. Heppelmann, A. Hirsch, E. Hjort, G. W. Hoffmann, D. J. Hofman, R. S. Hollis, B. Huang, H. Z. Huang, T. J. Humanic, L. Huo, G. Igo, A. Iordanova, P. Jacobs, W. W. Jacobs, C. Jena, F. Jin, J. Joseph, E. G. Judd, S. Kabana, K. Kang, J. Kapitan, K. Kauder, D. Keane, A. Kechechyan, D. Kettler, D. P. Kikola, J. Kiryluk, A. Kisiel, V. Kizka, S. R. Klein, A. G. Knospe, A. Kocoloski, D. D. Koetke, T. Kollegger, J. Konzer, I. Koralt, L. Koroleva, W. Korsch, L. Kotchenda, V. Kouchpil, P. Kravtsov, K. Krueger, M. Krus, L. Kumar, P. Kurnadi, M. A. C. Lamont, J. M. Landgraf, S. LaPointe, J. Lauret, A. Lebedev, R. Lednicky, C-H. Lee, J. H. Lee, W. Leight, M. J. LeVine, C. Li, L. Li, N. Li, W. Li, X. Li, Y. Li, Z. M. Li, M. A. Lisa, F. Liu, H. Liu, J. Liu, T. Ljubicic, W. J. Llope, R. S. Longacre, W. A. Love, Y. Lu, E. V. Lukashov, X. Luo, G. L. Ma, Y. G. Ma, D. P. Mahapatra, R. Majka, O. I. Mall, L. K. Mangotra, R. Manweiler, S. Margetis, C. Markert, H. Masui, H. S. Matis, Yu. A. Matulenko, D. McDonald, T. S. McShane, A. Meschanin, R. Milner, N. G. Minaev, S. Mioduszewski, M. K. Mitrovski, B. Mohanty, M. M. Mondal, B. Morozov, D. A. Morozov, M. G. Munhoz, M. Naglis, B. K. Nandi, T. K. Nayak, P. K. Netrakanti, M. J. Ng, L. V. Nogach, S. B. Nurushev, G. Odyniec, A. Ogawa, A. Ohlson, V. Okorokov, E. W. Oldag, D. Olson, M. Pachr, B. S. Page, S. K. Pal, Y. Pandit, Y. Panebratsev, T. Pawlak, T. Peitzmann, C. Perkins, W. Peryt, S. C. Phatak, P. Pile, M. Planinic, M. A. Ploskon, J. Pluta, D. Plyku, N. Poljak, A. M. Poskanzer, B. V. K. S. Potukuchi, C. B. Powell, D. Prindle, C. Pruneau, N. K. Pruthi, P. R. Pujahari, J. Putschke, H. Qiu, R. Raniwala, S. Raniwala, R. L. Ray, R. Redwine, R. Reed, H. G. Ritter, J. B. Roberts, O. V. Rogachevskiy, J. L. Romero, A. Rose, L. Ruan, S. Sakai, I. Sakrejda, T. Sakuma, S. Salur, J. Sandweiss, E. Sangaline, J. Schambach, R. P. Scharenberg, A. M. Schmah, N. Schmitz, T. R. Schuster, J. Seele, J. Seger, I. Selyuzhenkov, P. Seyboth, E. Shahaliev, M. Shao, M. Sharma, S. S. Shi, E. P. Sichtermann, F. Simon, R. N. Singaraju, M. J. Skoby, N. Smirnov, P. Sorensen, H. M. Spinka, B. Srivastava, T. D. S. Stanislaus, D. Staszak, J. R. Stevens, R. Stock, M. Strikhanov, B. Stringfellow, A. A. P. Suaide, M. C. Suarez, N. L. Subba, M. Sumbera, X. M. Sun, Y. Sun, Z. Sun, B. Surrow, D. N. Svirida, T. J. M. Symons, A. Szanto de Toledo, J. Takahashi, A. H. Tang, Z. Tang, L. H. Tarini, T. Tarnowsky, D. Thein, J. H. Thomas, J. Tian, A. R. Timmins, S. Timoshenko, D. Tlusty, M. Tokarev, V. N. Tram, S. Trentalange, R. E. Tribble, O. D. Tsai, T. Ullrich, D. G. Underwood, G. Van Buren, M. van Leeuwen, G. van Nieuwenhuizen, J. A. Vanfossen, R. Varma, G. M. S. Vasconcelos, A. N. Vasiliev, F. Videbæk, Y. P. Viyogi, S. Vokal, S. A. Voloshin, M. Wada, M. Walker, F. Wang, G. Wang, H. Wang, J. S. Wang, Q. Wang, X. L. Wang, Y. Wang, G. Webb, J. C. Webb, G. D. Westfall, C. Whitten Jr., H. Wieman, S. W. Wissink, R. Witt, Y. F. Wu, W. Xie, H. Xu, N. Xu, Q. H. Xu, W. Xu, Y. Xu, Z. Xu, L. Xue, Y. Yang, P. Yepes, K. Yip, I-K. Yoo, Q. Yue, M. Zawisza, H. Zbroszczyk, W. Zhan, J. B. Zhang, S. Zhang, W. M. Zhang, X. P. Zhang, Y. Zhang, Z. P. Zhang, J. Zhao, C. Zhong, W. Zhou, X. Zhu, Y. H. Zhu, R. Zoulkarneev, Y. Zoulkarneeva, Laboratoire SUBATECH Nantes (SUBATECH), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Nantes (UN)-Mines Nantes (Mines Nantes), and STAR
Subjects: Nuclear reaction, Nuclear and High Energy Physics, Meson, Hadron, Nuclear Theory, FOS: Physical sciences, Elementary particle, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 200GeV, 01 natural sciences, Nuclear physics, Pion, 0103 physical sciences, Nuclear Experiment (nucl-ex), Multiplicity (chemistry), 010306 general physics, Nuclear Experiment, Quantum chromodynamics, Physics, STAR, 010308 nuclear & particles physics, scaling, Charged particle, NATURAL SCIENCES. Physics, PRIRODNE ZNANOSTI. Fizika
Abstract: Identified charged pion, kaon, and proton spectra are used to explore the system size dependence of bulk freeze-out properties in Cu+Cu collisions at $\sqrt{s_{NN}}$=200 and 62.4 GeV. The data are studied with hydrodynamically-motivated Blast-wave and statistical model frameworks in order to characterize the freeze-out properties of the system. The dependence of freeze-out parameters on beam energy and collision centrality is discussed. Using the existing results from Au+Au and $pp$ collisions, the dependence of freeze-out parameters on the system size is also explored. This multi-dimensional systematic study furthers our understanding of the QCD phase diagram revealing the importance of the initial geometrical overlap of the colliding ions. The analysis of Cu+Cu collisions, which expands the system size dependence studies from Au+Au data with detailed measurements in the smaller system, shows that the bulk freeze-out properties of charged particles studied here scale with the total charged particle multiplicity at mid-rapidity, suggesting the relevance of initial state effects., submitted to Phys.Rev.C, 13 pages, 14 figures
Published: 2011

27. Measurement of the Bottom Quark Contribution to Nonphotonic Electron Production inp+pCollisions ats=200 GeV

Author: M. M. Aggarwal, Z. Ahammed, A. V. Alakhverdyants, I. Alekseev, J. Alford, B. D. Anderson, Daniel Anson, D. Arkhipkin, G. S. Averichev, J. Balewski, L. S. Barnby, S. Baumgart, D. R. Beavis, R. Bellwied, M. J. Betancourt, R. R. Betts, A. Bhasin, A. K. Bhati, H. Bichsel, J. Bielcik, J. Bielcikova, B. Biritz, L. C. Bland, B. E. Bonner, J. Bouchet, E. Braidot, A. V. Brandin, A. Bridgeman, E. Bruna, S. Bueltmann, I. Bunzarov, T. P. Burton, X. Z. Cai, H. Caines, M. Calderón de la Barca Sánchez, O. Catu, D. Cebra, R. Cendejas, M. C. Cervantes, Z. Chajecki, P. Chaloupka, S. Chattopadhyay, H. F. Chen, J. H. Chen, J. Y. Chen, J. Cheng, M. Cherney, A. Chikanian, K. E. Choi, W. Christie, P. Chung, R. F. Clarke, M. J. M. Codrington, R. Corliss, J. G. Cramer, H. J. Crawford, D. Das, S. Dash, A. Davila Leyva, L. C. De Silva, R. R. Debbe, T. G. Dedovich, A. A. Derevschikov, R. Derradi de Souza, L. Didenko, P. Djawotho, S. M. Dogra, X. Dong, J. L. Drachenberg, J. E. Draper, J. C. Dunlop, M. R. Dutta Mazumdar, L. G. Efimov, E. Elhalhuli, M. Elnimr, J. Engelage, G. Eppley, B. Erazmus, M. Estienne, L. Eun, O. Evdokimov, P. Fachini, R. Fatemi, J. Fedorisin, R. G. Fersch, P. Filip, E. Finch, V. Fine, Y. Fisyak, C. A. Gagliardi, D. R. Gangadharan, M. S. Ganti, E. J. Garcia-Solis, A. Geromitsos, F. Geurts, V. Ghazikhanian, P. Ghosh, Y. N. Gorbunov, A. Gordon, O. Grebenyuk, D. Grosnick, S. M. Guertin, A. Gupta, W. Guryn, B. Haag, A. Hamed, L-X. Han, J. W. Harris, J. P. Hays-Wehle, M. Heinz, S. Heppelmann, A. Hirsch, E. Hjort, A. M. Hoffman, G. W. Hoffmann, D. J. Hofman, B. Huang, H. Z. Huang, T. J. Humanic, L. Huo, G. Igo, P. Jacobs, W. W. Jacobs, C. Jena, F. Jin, C. L. Jones, P. G. Jones, J. Joseph, E. G. Judd, S. Kabana, K. Kajimoto, K. Kang, J. Kapitan, K. Kauder, D. Keane, A. Kechechyan, D. Kettler, D. P. Kikola, J. Kiryluk, A. Kisiel, V. Kizka, S. R. Klein, A. G. Knospe, A. Kocoloski, D. D. Koetke, T. Kollegger, J. Konzer, I. Koralt, L. Koroleva, W. Korsch, L. Kotchenda, V. Kouchpil, P. Kravtsov, K. Krueger, M. Krus, L. Kumar, P. Kurnadi, M. A. C. Lamont, J. M. Landgraf, S. LaPointe, J. Lauret, A. Lebedev, R. Lednicky, C-H. Lee, J. H. Lee, W. Leight, M. J. LeVine, C. Li, L. Li, N. Li, W. Li, X. Li, Y. Li, Z. M. Li, G. Lin, X. Y. Lin, S. J. Lindenbaum, M. A. Lisa, F. Liu, H. Liu, J. Liu, T. Ljubicic, W. J. Llope, R. S. Longacre, W. A. Love, Y. Lu, E. V. Lukashov, X. Luo, G. L. Ma, Y. G. Ma, D. P. Mahapatra, R. Majka, O. I. Mall, L. K. Mangotra, R. Manweiler, S. Margetis, C. Markert, H. Masui, H. S. Matis, Yu. A. Matulenko, D. McDonald, T. S. McShane, A. Meschanin, R. Milner, N. G. Minaev, S. Mioduszewski, A. Mischke, M. K. Mitrovski, B. Mohanty, M. M. Mondal, B. Morozov, D. A. Morozov, M. G. Munhoz, B. K. Nandi, C. Nattrass, T. K. Nayak, J. M. Nelson, P. K. Netrakanti, M. J. Ng, L. V. Nogach, S. B. Nurushev, G. Odyniec, A. Ogawa, V. Okorokov, E. W. Oldag, D. Olson, M. Pachr, B. S. Page, S. K. Pal, Y. Pandit, Y. Panebratsev, T. Pawlak, T. Peitzmann, V. Perevoztchikov, C. Perkins, W. Peryt, S. C. Phatak, P. Pile, M. Planinic, M. A. Ploskon, J. Pluta, D. Plyku, N. Poljak, A. M. Poskanzer, B. V. K. S. Potukuchi, C. B. Powell, D. Prindle, C. Pruneau, N. K. Pruthi, P. R. Pujahari, J. Putschke, H. Qiu, R. Raniwala, S. Raniwala, R. L. Ray, R. Redwine, R. Reed, H. G. Ritter, J. B. Roberts, O. V. Rogachevskiy, J. L. Romero, A. Rose, C. Roy, L. Ruan, R. Sahoo, S. Sakai, I. Sakrejda, T. Sakuma, S. Salur, J. Sandweiss, E. Sangaline, J. Schambach, R. P. Scharenberg, N. Schmitz, T. R. Schuster, J. Seele, J. Seger, I. Selyuzhenkov, P. Seyboth, E. Shahaliev, M. Shao, M. Sharma, S. S. Shi, E. P. Sichtermann, F. Simon, R. N. Singaraju, M. J. Skoby, N. Smirnov, P. Sorensen, J. Sowinski, H. M. Spinka, B. Srivastava, T. D. S. Stanislaus, D. Staszak, J. R. Stevens, R. Stock, M. Strikhanov, B. Stringfellow, A. A. P. Suaide, M. C. Suarez, N. L. Subba, M. Sumbera, X. M. Sun, Y. Sun, Z. Sun, B. Surrow, D. N. Svirida, T. J. M. Symons, A. Szanto de Toledo, J. Takahashi, A. H. Tang, Z. Tang, L. H. Tarini, T. Tarnowsky, D. Thein, J. H. Thomas, J. Tian, A. R. Timmins, S. Timoshenko, D. Tlusty, M. Tokarev, T. A. Trainor, V. N. Tram, S. Trentalange, R. E. Tribble, O. D. Tsai, J. Ulery, T. Ullrich, D. G. Underwood, G. Van Buren, M. van Leeuwen, G. van Nieuwenhuizen, J. A. Vanfossen, R. Varma, G. M. S. Vasconcelos, A. N. Vasiliev, F. Videbaek, Y. P. Viyogi, S. Vokal, S. A. Voloshin, M. Wada, M. Walker, F. Wang, G. Wang, H. Wang, J. S. Wang, Q. Wang, X. L. Wang, Y. Wang, G. Webb, J. C. Webb, G. D. Westfall, C. Whitten, H. Wieman, S. W. Wissink, R. Witt, Y. F. Wu, W. Xie, H. Xu, N. Xu, Q. H. Xu, W. Xu, Y. Xu, Z. Xu, L. Xue, Y. Yang, P. Yepes, K. Yip, I-K. Yoo, Q. Yue, M. Zawisza, H. Zbroszczyk, W. Zhan, J. B. Zhang, S. Zhang, W. M. Zhang, X. P. Zhang, Y. Zhang, Z. P. Zhang, J. Zhao, C. Zhong, J. Zhou, W. Zhou, X. Zhu, Y. H. Zhu, R. Zoulkarneev, and Y. Zoulkarneeva
Subjects: Physics, Quark, Semileptonic decay, Particle physics, Meson, 010308 nuclear & particles physics, High Energy Physics::Lattice, Nuclear Theory, High Energy Physics::Phenomenology, Hadron, Quark model, General Physics and Astronomy, 01 natural sciences, 7. Clean energy, Bottom quark, Nuclear physics, 0103 physical sciences, D meson, High Energy Physics::Experiment, B meson, Nuclear Experiment, 010306 general physics
Abstract: The contribution of B meson decays to nonphotonic electrons, which are mainly produced by the semileptonic decays of heavy-flavor mesons, in p + p collisions at root s = 200 GeV has been measured using azimuthal correlations between nonphotonic electrons and hadrons. The extracted B decay contribution is approximately 50% at a transverse momentum of p(T) >= 5 GeV/c. These measurements constrain the nuclear modification factor for electrons from B and D meson decays. The result indicates that B meson production in heavy ion collisions is also suppressed at high p(T).
Published: 2010

28. Measurement of the parity-violating longitudinal single-spin asymmetry for W± boson production in polarized proton-proton collisions at sqrt[s] = 500 GeV

Author: M M, Aggarwal, Z, Ahammed, A V, Alakhverdyants, I, Alekseev, J, Alford, B D, Anderson, C D, Anson, D, Arkhipkin, G S, Averichev, J, Balewski, D R, Beavis, R, Bellwied, M J, Betancourt, R R, Betts, A, Bhasin, A K, Bhati, H, Bichsel, J, Bielcik, J, Bielcikova, B, Biritz, L C, Bland, W, Borowski, J, Bouchet, E, Braidot, A V, Brandin, A, Bridgeman, S G, Brovko, E, Bruna, S, Bueltmann, I, Bunzarov, T P, Burton, X Z, Cai, H, Caines, M, Calderón de la Barca Sánchez, D, Cebra, R, Cendejas, M C, Cervantes, Z, Chajecki, P, Chaloupka, S, Chattopadhyay, H F, Chen, J H, Chen, J Y, Chen, J, Cheng, M, Cherney, A, Chikanian, K E, Choi, W, Christie, P, Chung, M J M, Codrington, R, Corliss, J G, Cramer, H J, Crawford, S, Dash, A, Davila Leyva, L C, De Silva, R R, Debbe, T G, Dedovich, A A, Derevschikov, R, Derradi de Souza, L, Didenko, P, Djawotho, S M, Dogra, X, Dong, J L, Drachenberg, J E, Draper, J C, Dunlop, M R, Dutta Mazumdar, L G, Efimov, M, Elnimr, J, Engelage, G, Eppley, B, Erazmus, M, Estienne, L, Eun, O, Evdokimov, R, Fatemi, J, Fedorisin, R G, Fersch, E, Finch, V, Fine, Y, Fisyak, C A, Gagliardi, D R, Gangadharan, M S, Ganti, A, Geromitsos, F, Geurts, P, Ghosh, Y N, Gorbunov, A, Gordon, O, Grebenyuk, D, Grosnick, S M, Guertin, A, Gupta, W, Guryn, B, Haag, A, Hamed, L-X, Han, J W, Harris, J P, Hays-Wehle, M, Heinz, S, Heppelmann, A, Hirsch, E, Hjort, G W, Hoffmann, D J, Hofman, B, Huang, H Z, Huang, T J, Humanic, L, Huo, G, Igo, P, Jacobs, W W, Jacobs, C, Jena, F, Jin, J, Joseph, E G, Judd, S, Kabana, K, Kang, J, Kapitan, K, Kauder, D, Keane, A, Kechechyan, D, Kettler, D P, Kikola, J, Kiryluk, A, Kisiel, V, Kizka, S R, Klein, A G, Knospe, A, Kocoloski, D D, Koetke, T, Kollegger, J, Konzer, I, Koralt, L, Koroleva, W, Korsch, L, Kotchenda, V, Kouchpil, P, Kravtsov, K, Krueger, M, Krus, L, Kumar, P, Kurnadi, M A C, Lamont, J M, Landgraf, S, LaPointe, J, Lauret, A, Lebedev, R, Lednicky, C-H, Lee, J H, Lee, W, Leight, M J, LeVine, C, Li, L, Li, N, Li, W, Li, X, Li, Y, Li, Z M, Li, M A, Lisa, F, Liu, H, Liu, J, Liu, T, Ljubicic, W J, Llope, R S, Longacre, W A, Love, Y, Lu, E V, Lukashov, X, Luo, G L, Ma, Y G, Ma, D P, Mahapatra, R, Majka, O I, Mall, L K, Mangotra, R, Manweiler, S, Margetis, C, Markert, H, Masui, H S, Matis, Yu A, Matulenko, D, McDonald, T S, McShane, A, Meschanin, R, Milner, N G, Minaev, S, Mioduszewski, A, Mischke, M K, Mitrovski, B, Mohanty, M M, Mondal, B, Morozov, D A, Morozov, M G, Munhoz, M, Naglis, B K, Nandi, T K, Nayak, P K, Netrakanti, M J, Ng, L V, Nogach, S B, Nurushev, G, Odyniec, A, Ogawa, A, Ohlson, V, Okorokov, E W, Oldag, D, Olson, M, Pachr, B S, Page, S K, Pal, Y, Pandit, Y, Panebratsev, T, Pawlak, T, Peitzmann, C, Perkins, W, Peryt, S C, Phatak, P, Pile, M, Planinic, M A, Ploskon, J, Pluta, D, Plyku, N, Poljak, A M, Poskanzer, B V K S, Potukuchi, C B, Powell, D, Prindle, C, Pruneau, N K, Pruthi, P R, Pujahari, J, Putschke, H, Qiu, R, Raniwala, S, Raniwala, R L, Ray, R, Redwine, R, Reed, H G, Ritter, J B, Roberts, O V, Rogachevskiy, J L, Romero, A, Rose, L, Ruan, S, Sakai, I, Sakrejda, T, Sakuma, S, Salur, J, Sandweiss, E, Sangaline, J, Schambach, R P, Scharenberg, A M, Schmah, N, Schmitz, T R, Schuster, J, Seele, J, Seger, I, Selyuzhenkov, P, Seyboth, E, Shahaliev, M, Shao, M, Sharma, S S, Shi, E P, Sichtermann, F, Simon, R N, Singaraju, M J, Skoby, N, Smirnov, P, Sorensen, H M, Spinka, B, Srivastava, T D S, Stanislaus, D, Staszak, J R, Stevens, R, Stock, M, Strikhanov, B, Stringfellow, A A P, Suaide, M C, Suarez, N L, Subba, M, Sumbera, X M, Sun, Y, Sun, Z, Sun, B, Surrow, D N, Svirida, T J M, Symons, A, Szanto de Toledo, J, Takahashi, A H, Tang, Z, Tang, L H, Tarini, T, Tarnowsky, D, Thein, J H, Thomas, J, Tian, A R, Timmins, S, Timoshenko, D, Tlusty, M, Tokarev, T A, Trainor, V N, Tram, S, Trentalange, R E, Tribble, O D, Tsai, T, Ullrich, D G, Underwood, G, Van Buren, M, van Leeuwen, G, van Nieuwenhuizen, J A, Vanfossen, R, Varma, G M S, Vasconcelos, A N, Vasiliev, F, Videbæk, Y P, Viyogi, S, Vokal, S A, Voloshin, M, Wada, M, Walker, F, Wang, G, Wang, H, Wang, J S, Wang, Q, Wang, X L, Wang, Y, Wang, G, Webb, J C, Webb, G D, Westfall, C, Whitten, H, Wieman, S W, Wissink, R, Witt, Y F, Wu, W, Xie, H, Xu, N, Xu, Q H, Xu, W, Xu, Y, Xu, Z, Xu, L, Xue, Y, Yang, P, Yepes, K, Yip, I-K, Yoo, Q, Yue, M, Zawisza, H, Zbroszczyk, W, Zhan, J B, Zhang, S, Zhang, W M, Zhang, X P, Zhang, Y, Zhang, Z P, Zhang, J, Zhao, C, Zhong, W, Zhou, X, Zhu, Y H, Zhu, R, Zoulkarneev, and Y, Zoulkarneeva
Abstract: We report the first measurement of the parity-violating single-spin asymmetries for midrapidity decay positrons and electrons from W+ and W- boson production in longitudinally polarized proton-proton collisions at sqrt[s] = 500 GeV by the STAR experiment at RHIC. The measured asymmetries, A(L)(W+) = -0.27 ± 0.10(stat.) ± 0.02(syst.) ± 0.03(norm.) and A(L)(W-) = 0.14 ± 0.19(stat.) ± 0.02(syst.) ± 0.01(norm.), are consistent with theory predictions, which are large and of opposite sign. These predictions are based on polarized quark and antiquark distribution functions constrained by polarized deep-inelastic scattering measurements.
Published: 2010

29. Azimuthal di-hadron correlations ind+Au and Au + Au collisions atsNN=200GeV measured at the STAR detector

Author: J. Engelage, A. Geromitsos, Premomoy Ghosh, J. M. Landgraf, L. Kotchenda, M. Strikhanov, J. Konzer, Ki-Seok Choi, J. Sandweiss, K. Kang, P. Kurnadi, M. J. Horner, D. Thein, G. Eppley, Sergey Timoshenko, F. Liu, T. J. Humanic, H. Bichsel, G. Odyniec, Y. Zoulkarneeva, Jorn Henning Putschke, W. Xu, Wolfgang Korsch, Z. Xu, G. Lin, N. Xu, E. P. Sichtermann, A. V. Brandin, P. Filip, W. Zhou, Zhenyu Zhang, J. Pluta, Z. J. Sun, Qian Yue, A. Szanto de Toledo, J. Kapitan, A. R. Timmins, S. M. Dogra, W. Li, J. Balewski, Rashmi Raniwala, Sergey Voloshin, M. Tokarev, S. M. Guertin, P. Pile, G. D. Westfall, Christine Nattrass, Q. Wang, Claude Andre Pruneau, Xiaofeng Zhu, A. Ogawa, H. F. Chen, Thomas A. Trainor, R. Varma, C-Q. Li, Alexandre Alarcon Do Passo Suaide, Anik Gupta, T. Pawlak, A. V. Alakhverdyants, R. P. Scharenberg, Christina Markert, M. K. Mitrovski, James Prewitt Hays-Wehle, G. Wang, T. R. Schuster, Yu A. Matulenko, Shoko Sakai, H. S. Matis, T. Ullrich, R. D. Majka, D. P. Mahapatra, B. S. Page, J. W. Harris, P. Seyboth, E. J. Garcia-Solis, T. G. Dedovich, E. Hjort, R. Zoulkarneev, Russell Richard Betts, D. P. Kikola, W. W. Jacobs, J. Sowinski, J. Lauret, T. Sakuma, A. K. Bhati, Ermes Braidot, D. Keane, T. D. S. Stanislaus, Y. F. Wu, D. G. Underwood, L. Eun, B. Stringfellow, S. C. Phatak, M. J. Skoby, Frank Jm Geurts, J. Y. Chen, Jana Bielcikova, Basanta Kumar Nandi, S. Margetis, R. F. Clarke, J. Schambach, Nikolai Smirnov, R. Stock, L. G. Efimov, R. Derradi de Souza, Anju Bhasin, Adam Ryszard Kisiel, R. P. Redwine, E. Elhalhuli, P. Sorensen, C-H. Lee, T. K. Nayak, H. H. Wieman, T. S. McShane, H. J. Crawford, R. Lednicky, T. Tarnowsky, P. Djawotho, M. Shao, J. Cheng, Peter Graham Jones, B. Biritz, X. L. Wang, C. Zhong, R. E. Tribble, Jifa Tian, M. Sharma, Xuan Zhang, L. K. Mangotra, D. Tlusty, T. P. Burton, T. J. M. Symons, Mirko Planinic, R. Fatemi, Michael Joseph Betancourt, J. L. Drachenberg, L. C. De Silva, Jing Zhou, A. Lebedev, I. Sakrejda, P. Yepes, A. Davila Leyva, Y. Panebratsev, N. G. Minaev, R. Manweiler, Hongfang Liu, K. Krueger, Jie Liu, L. Didenko, D. Grosnick, Olga Evdokimov, V. Kouchpil, M. van Leeuwen, X. Dong, S. Baumgart, Gerald W Hoffmann, I. Koralt, A. Chikanian, P. R. Pujahari, C. B. Powell, J. A. Vanfossen, Y. N. Gorbunov, S. K. Pal, Justin Stevens, L. V. Nogach, M. J. Ng, Marcelo Gameiro Munhoz, D. J. Prindle, A. H. Tang, Matthew Walker, M. J. M. Codrington, J. Alford, A. M. Poskanzer, C. A. Whitten, Feng Jin, V. N. Tram, L. H. Tarini, William Axel Leight, Yi Zhang, W. Guryn, Ross Milner, Hanna Paulina Zbroszczyk, G. Van Nieuwenhuizen, R. Corliss, Rolf K. Reed, Jay Roberts, S. H. Zhang, V. Fine, I. G. Alekseev, Donika Plyku, D. R. Beavis, S. R. Klein, N. L. Subba, A. Kechechyan, Andre Mischke, Jongmin Lee, D. L. Olson, I. Bunzarov, R. L. Ray, L. Koroleva, Yingcai Zhu, Y. J. Sun, Y. Yang, O. G. Grebenyuk, E. Sangaline, D. Arkhipkin, A. Hamed, S. J. Lindenbaum, B. E. Bonner, M. A. Lisa, V. Ghazikhanian, M. Cherney, B. Haag, D. Staszak, S. LaPointe, N. Li, J. Fedorisin, W. Christie, O. D. Tsai, M. Calderon De La Barca Sanchez, T. Ljubicic, A. Gordon, A. A. Derevschikov, M. Krus, R. Cendejas, Lokesh Kumar, Zhiming Li, S. Kabana, Xiangming Sun, W. M. Zhang, Andrey Vasiliev, A. G. Knospe, M. Elnimr, M. C. Cervantes, O. Catu, H. Caines, Sudhir Raniwala, Y. P. Viyogi, Y. Fisyak, Zebo Tang, A. Kocoloski, B. Morozov, C. Roy, K. Yip, J. S. Wang, K. Kajimoto, S. Dash, Janet Elizabeth Seger, R. R. Debbe, I. Selyuzhenkov, Vitaly Okorokov, O. I. Mall, A. M. Hoffman, J. C. Webb, Sevil Salur, Y. Wang, J. G. Cramer, M. A.C. Lamont, L-X. Han, B. Huang, Bernd Surrow, Mateusz Andrzej Ploskon, R. Witt, Z. Chajecki, B. Erazmus, Yinina Ma, L. Li, S. Mioduszewski, P. Fachini, Pawan Kumar Netrakanti, J. Seele, J. L. Romero, Donald M. McDonald, E. W. Oldag, A. Bridgeman, P. Chaloupka, B. V.K.S. Potukuchi, B. K. Srivastava, C. A. Gagliardi, M. Pachr, Xingguo Li, W. J. Llope, M. Heinz, Lee Stuart Barnby, M. Zawisza, H. M. Spinka, J. C. Dunlop, E. Finch, Jaroslav Bielcik, Neeraj Gupta, D. Cebra, Zubayer Ahammed, B. D. Anderson, M. J. LeVine, M. R. Dutta Mazumdar, S. Trentalange, O. V. Rogachevskiy, C. Perkins, Mitali Mondal, W. A. Love, J. H. Thomas, L. Xue, M. Estienne, Madan M. Aggarwal, P. Chung, Fuqiang Wang, Yong Xu, Wei Xie, J. Joseph, G. M.S. Vasconcelos, W. L. Zhan, Q. H. Xu, N. K. Pruthi, D. Kettler, Frank Simon, Y. Pandit, R. N. Singaraju, L. Huo, A. P. Meschanin, G. S. Averichev, N. Schmitz, E. Shahaliev, T. Peitzmann, R. S. Longacre, Debasish Das, Raghunath Sahoo, G. Igo, L. Ruan, J. Bouchet, K. Kauder, Andrew Rose, L. C. Bland, Bedangadas Mohanty, C. L. Jones, M. C. Suarez, D. N. Svirida, R. G. Fersch, J. Ulery, H. G. Ritter, M. Wada, R. Bellwied, I. K. Yoo, D. R. Gangadharan, E. G. Judd, Michal Sumbera, S. W. Wissink, Nikola Poljak, S. Bueltmann, Elena Bruna, Thorsten Sven Kollegger, Xiaofeng Luo, Guo-Liang Ma, S. Heppelmann, Haiyan Wang, X. Z. Cai, A. S. Hirsch, P. Kravtsov, G. Van Buren, S. S. Shi, J. B. Zhang, J. M. Nelson, D. D. Koetke, J. E. Draper, Yan Li, W. Peryt, J. Zhao, David Jonathan Hofman, H. Masui, Peter Martin Jacobs, F. Videbæk, G. Webb, J. Takahashi, S. B. Nurushev, Sukalyan Chattopadhyay, M. S. Ganti, H. Z. Huang, S. Vokal, Chitrasen Jena, Y. P. Lu, V. Perevoztchikov, J. Kiryluk, J. H. Chen, and D. A. Morozov
Subjects: Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Hadron, Elementary particle, Plasma, Radiation, 01 natural sciences, Charged particle, Nuclear physics, Azimuth, Deuterium, 0103 physical sciences, Atomic physics, Nuclear Experiment, 010306 general physics, STAR detector
Abstract: Yields, correlation shapes, and mean transverse momenta p(T) of charged particles associated with intermediate-to high-p(T) trigger particles (2.5 < p(T) < 10 GeV/c) in d + Au and Au + Au collisions at root s(NN) = 200 GeV are presented. For associated particles at higher p(T) greater than or similar to 2.5 GeV/c, narrow correlation peaks are seen in d + Au and Au + Au, indicating that the main production mechanism is jet fragmentation. At lower associated particle pT < 2 GeV/c, a large enhancement of the near- (Delta phi similar to 0) and away-side (Delta phi similar to pi) associated yields is found, together with a strong broadening of the away-side azimuthal distributions in Au + Au collisions compared to d + Au measurements, suggesting that other particle production mechanisms play a role. This is further supported by the observed significant softening of the away-side associated particle yield distribution at Delta phi similar to pi in central Au + Au collisions.
Published: 2010

30. Balance functions fromAu+Au,d+Au, andp+pcollisions atsNN=200GeV

Author: M. M. Aggarwal, Z. Ahammed, A. V. Alakhverdyants, I. Alekseev, J. Alford, B. D. Anderson, D. Arkhipkin, G. S. Averichev, J. Balewski, L. S. Barnby, S. Baumgart, D. R. Beavis, R. Bellwied, M. J. Betancourt, R. R. Betts, A. Bhasin, A. K. Bhati, H. Bichsel, J. Bielcik, J. Bielcikova, B. Biritz, L. C. Bland, B. E. Bonner, J. Bouchet, E. Braidot, A. V. Brandin, A. Bridgeman, E. Bruna, S. Bueltmann, I. Bunzarov, T. P. Burton, X. Z. Cai, H. Caines, M. Calderón de la Barca Sánchez, O. Catu, D. Cebra, R. Cendejas, M. C. Cervantes, Z. Chajecki, P. Chaloupka, S. Chattopadhyay, H. F. Chen, J. H. Chen, J. Y. Chen, J. Cheng, M. Cherney, A. Chikanian, K. E. Choi, W. Christie, P. Chung, R. F. Clarke, M. J. M. Codrington, R. Corliss, J. G. Cramer, H. J. Crawford, D. Das, S. Dash, A. Davila Leyva, L. C. De Silva, R. R. Debbe, T. G. Dedovich, A. A. Derevschikov, R. Derradi de Souza, L. Didenko, P. Djawotho, S. M. Dogra, X. Dong, J. L. Drachenberg, J. E. Draper, J. C. Dunlop, M. R. Dutta Mazumdar, L. G. Efimov, E. Elhalhuli, M. Elnimr, J. Engelage, G. Eppley, B. Erazmus, M. Estienne, L. Eun, O. Evdokimov, P. Fachini, R. Fatemi, J. Fedorisin, R. G. Fersch, P. Filip, E. Finch, V. Fine, Y. Fisyak, C. A. Gagliardi, D. R. Gangadharan, M. S. Ganti, E. J. Garcia-Solis, A. Geromitsos, F. Geurts, V. Ghazikhanian, P. Ghosh, Y. N. Gorbunov, A. Gordon, O. Grebenyuk, D. Grosnick, S. M. Guertin, A. Gupta, N. Gupta, W. Guryn, B. Haag, A. Hamed, L-X. Han, J. W. Harris, J. P. Hays-Wehle, M. Heinz, S. Heppelmann, A. Hirsch, E. Hjort, A. M. Hoffman, G. W. Hoffmann, D. J. Hofman, B. Huang, H. Z. Huang, T. J. Humanic, L. Huo, G. Igo, P. Jacobs, W. W. Jacobs, C. Jena, F. Jin, C. L. Jones, P. G. Jones, J. Joseph, E. G. Judd, S. Kabana, K. Kajimoto, K. Kang, J. Kapitan, K. Kauder, D. Keane, A. Kechechyan, D. Kettler, D. P. Kikola, J. Kiryluk, A. Kisiel, S. R. Klein, A. G. Knospe, A. Kocoloski, D. D. Koetke, T. Kollegger, J. Konzer, I. Koralt, L. Koroleva, W. Korsch, L. Kotchenda, V. Kouchpil, P. Kravtsov, K. Krueger, M. Krus, L. Kumar, P. Kurnadi, M. A. C. Lamont, J. M. Landgraf, S. LaPointe, J. Lauret, A. Lebedev, R. Lednicky, C-H. Lee, J. H. Lee, W. Leight, M. J. LeVine, C. Li, L. Li, N. Li, W. Li, X. Li, Y. Li, Z. M. Li, G. Lin, S. J. Lindenbaum, M. A. Lisa, F. Liu, H. Liu, J. Liu, T. Ljubicic, W. J. Llope, R. S. Longacre, W. A. Love, Y. Lu, X. Luo, G. L. Ma, Y. G. Ma, D. P. Mahapatra, R. Majka, O. I. Mall, L. K. Mangotra, R. Manweiler, S. Margetis, C. Markert, H. Masui, H. S. Matis, Yu. A. Matulenko, D. McDonald, T. S. McShane, A. Meschanin, R. Milner, N. G. Minaev, S. Mioduszewski, A. Mischke, M. K. Mitrovski, B. Mohanty, M. M. Mondal, B. Morozov, D. A. Morozov, M. G. Munhoz, B. K. Nandi, C. Nattrass, T. K. Nayak, J. M. Nelson, P. K. Netrakanti, M. J. Ng, L. V. Nogach, S. B. Nurushev, G. Odyniec, A. Ogawa, V. Okorokov, E. W. Oldag, D. Olson, M. Pachr, B. S. Page, S. K. Pal, Y. Pandit, Y. Panebratsev, T. Pawlak, T. Peitzmann, V. Perevoztchikov, C. Perkins, W. Peryt, S. C. Phatak, P. Pile, M. Planinic, M. A. Ploskon, J. Pluta, D. Plyku, N. Poljak, A. M. Poskanzer, B. V. K. S. Potukuchi, C. B. Powell, D. Prindle, C. Pruneau, N. K. Pruthi, P. R. Pujahari, J. Putschke, R. Raniwala, S. Raniwala, R. L. Ray, R. Redwine, R. Reed, H. G. Ritter, J. B. Roberts, O. V. Rogachevskiy, J. L. Romero, A. Rose, C. Roy, L. Ruan, R. Sahoo, S. Sakai, I. Sakrejda, T. Sakuma, S. Salur, J. Sandweiss, E. Sangaline, J. Schambach, R. P. Scharenberg, N. Schmitz, T. R. Schuster, J. Seele, J. Seger, I. Selyuzhenkov, P. Seyboth, E. Shahaliev, M. Shao, M. Sharma, S. S. Shi, E. P. Sichtermann, F. Simon, R. N. Singaraju, M. J. Skoby, N. Smirnov, P. Sorensen, J. Sowinski, H. M. Spinka, B. Srivastava, T. D. S. Stanislaus, D. Staszak, J. R. Stevens, R. Stock, M. Strikhanov, B. Stringfellow, A. A. P. Suaide, M. C. Suarez, N. L. Subba, M. Sumbera, X. M. Sun, Y. Sun, Z. Sun, B. Surrow, D. N. Svirida, T. J. M. Symons, A. Szanto de Toledo, J. Takahashi, A. H. Tang, Z. Tang, L. H. Tarini, T. Tarnowsky, D. Thein, J. H. Thomas, J. Tian, A. R. Timmins, S. Timoshenko, D. Tlusty, M. Tokarev, V. N. Tram, S. Trentalange, R. E. Tribble, O. D. Tsai, J. Ulery, T. Ullrich, D. G. Underwood, G. Van Buren, M. van Leeuwen, G. van Nieuwenhuizen, J. A. Vanfossen, R. Varma, G. M. S. Vasconcelos, A. N. Vasiliev, F. Videbaek, Y. P. Viyogi, S. Vokal, S. A. Voloshin, M. Wada, M. Walker, F. Wang, G. Wang, H. Wang, J. S. Wang, Q. Wang, X. L. Wang, Y. Wang, G. Webb, J. C. Webb, G. D. Westfall, C. Whitten, H. Wieman, S. W. Wissink, R. Witt, Y. F. Wu, W. Xie, N. Xu, Q. H. Xu, W. Xu, Y. Xu, Z. Xu, L. Xue, Y. Yang, P. Yepes, K. Yip, I-K. Yoo, Q. Yue, M. Zawisza, H. Zbroszczyk, W. Zhan, J. B. Zhang, S. Zhang, W. M. Zhang, X. P. Zhang, Y. Zhang, Z. P. Zhang, J. Zhao, C. Zhong, J. Zhou, W. Zhou, X. Zhu, Y. H. Zhu, R. Zoulkarneev, and Y. Zoulkarneeva
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Nuclear Theory, Kinetic energy, 01 natural sciences, Hadronization, Pion, Pseudorapidity, 0103 physical sciences, High Energy Physics::Experiment, Rapidity, Production (computer science), Nuclear Experiment, 010306 general physics, Centrality, Nucleon
Abstract: Balance functions have been measured for charged-particle pairs, identified charged-pion pairs, and identified charged-kaon pairs in $\mathrm{Au}+\mathrm{Au}$, $d+\mathrm{Au}$, and $p+p$ collisions at $\sqrt{{s}_{\mathit{NN}}}=200$ GeV at the Relativistic Heavy Ion Collider using the STAR detector. These balance functions are presented in terms of relative pseudorapidity, $\ensuremath{\Delta}\ensuremath{\eta}$, relative rapidity, $\ensuremath{\Delta}y$, relative azimuthal angle, $\ensuremath{\Delta}\ensuremath{\phi}$, and invariant relative momentum, ${q}_{\mathrm{inv}}$. For charged-particle pairs, the width of the balance function in terms of $\ensuremath{\Delta}\ensuremath{\eta}$ scales smoothly with the number of participating nucleons, while hijing and urqmd model calculations show no dependence on centrality or system size. For charged-particle and charged-pion pairs, the balance functions widths in terms of $\ensuremath{\Delta}\ensuremath{\eta}$ and $\ensuremath{\Delta}y$ are narrower in central $\mathrm{Au}+\mathrm{Au}$ collisions than in peripheral collisions. The width for central collisions is consistent with thermal blast-wave models where the balancing charges are highly correlated in coordinate space at breakup. This strong correlation might be explained by either delayed hadronization or limited diffusion during the reaction. Furthermore, the narrowing trend is consistent with the lower kinetic temperatures inherent to more central collisions. In contrast, the width of the balance function for charged-kaon pairs in terms of $\ensuremath{\Delta}y$ shows little centrality dependence, which may signal a different production mechanism for kaons. The widths of the balance functions for charged pions and kaons in terms of ${q}_{\mathrm{inv}}$ narrow in central collisions compared to peripheral collisions, which may be driven by the change in the kinetic temperature.
Published: 2010

31. Υcross section inp+pcollisions ats=200 GeV

Author: B. I. Abelev, M. M. Aggarwal, Z. Ahammed, A. V. Alakhverdyants, B. D. Anderson, D. Arkhipkin, G. S. Averichev, J. Balewski, L. S. Barnby, S. Baumgart, D. R. Beavis, R. Bellwied, M. J. Betancourt, R. R. Betts, A. Bhasin, A. K. Bhati, H. Bichsel, J. Bielcik, J. Bielcikova, B. Biritz, L. C. Bland, B. E. Bonner, J. Bouchet, E. Braidot, A. V. Brandin, A. Bridgeman, E. Bruna, S. Bueltmann, I. Bunzarov, T. P. Burton, X. Z. Cai, H. Caines, M. Calderón de la Barca Sánchez, O. Catu, D. Cebra, R. Cendejas, M. C. Cervantes, Z. Chajecki, P. Chaloupka, S. Chattopadhyay, H. F. Chen, J. H. Chen, J. Y. Chen, J. Cheng, M. Cherney, A. Chikanian, K. E. Choi, W. Christie, P. Chung, R. F. Clarke, M. J. M. Codrington, R. Corliss, M. R. Cosentino, J. G. Cramer, H. J. Crawford, D. Das, S. Dash, A. Davila Leyva, L. C. De Silva, R. R. Debbe, T. G. Dedovich, M. DePhillips, A. A. Derevschikov, R. Derradi de Souza, L. Didenko, P. Djawotho, S. M. Dogra, X. Dong, J. L. Drachenberg, J. E. Draper, J. C. Dunlop, M. R. Dutta Mazumdar, L. G. Efimov, E. Elhalhuli, M. Elnimr, J. Engelage, G. Eppley, B. Erazmus, M. Estienne, L. Eun, O. Evdokimov, P. Fachini, R. Fatemi, J. Fedorisin, R. G. Fersch, P. Filip, E. Finch, V. Fine, Y. Fisyak, C. A. Gagliardi, D. R. Gangadharan, M. S. Ganti, E. J. Garcia-Solis, A. Geromitsos, F. Geurts, V. Ghazikhanian, P. Ghosh, Y. N. Gorbunov, A. Gordon, O. Grebenyuk, D. Grosnick, B. Grube, S. M. Guertin, A. Gupta, N. Gupta, W. Guryn, B. Haag, T. J. Hallman, A. Hamed, L-X. Han, J. W. Harris, J. P. Hays-Wehle, M. Heinz, S. Heppelmann, A. Hirsch, E. Hjort, A. M. Hoffman, G. W. Hoffmann, D. J. Hofman, R. S. Hollis, H. Z. Huang, T. J. Humanic, L. Huo, G. Igo, A. Iordanova, P. Jacobs, W. W. Jacobs, P. Jakl, C. Jena, F. Jin, C. L. Jones, P. G. Jones, J. Joseph, E. G. Judd, S. Kabana, K. Kajimoto, K. Kang, J. Kapitan, K. Kauder, D. Keane, A. Kechechyan, D. Kettler, D. P. Kikola, J. Kiryluk, A. Kisiel, A. G. Knospe, A. Kocoloski, D. D. Koetke, T. Kollegger, J. Konzer, M. Kopytine, I. Koralt, W. Korsch, L. Kotchenda, V. Kouchpil, P. Kravtsov, K. Krueger, M. Krus, L. Kumar, P. Kurnadi, M. A. C. Lamont, J. M. Landgraf, S. LaPointe, J. Lauret, A. Lebedev, R. Lednicky, C-H. Lee, J. H. Lee, W. Leight, M. J. LeVine, C. Li, L. Li, N. Li, W. Li, X. Li, Y. Li, Z. Li, G. Lin, S. J. Lindenbaum, M. A. Lisa, F. Liu, H. Liu, J. Liu, T. Ljubicic, W. J. Llope, R. S. Longacre, W. A. Love, Y. Lu, G. L. Ma, Y. G. Ma, D. P. Mahapatra, R. Majka, O. I. Mall, L. K. Mangotra, R. Manweiler, S. Margetis, C. Markert, H. Masui, H. S. Matis, Yu. A. Matulenko, D. McDonald, T. S. McShane, A. Meschanin, R. Milner, N. G. Minaev, S. Mioduszewski, A. Mischke, M. K. Mitrovski, B. Mohanty, M. M. Mondal, D. A. Morozov, M. G. Munhoz, B. K. Nandi, C. Nattrass, T. K. Nayak, J. M. Nelson, P. K. Netrakanti, M. J. Ng, L. V. Nogach, S. B. Nurushev, G. Odyniec, A. Ogawa, H. Okada, V. Okorokov, D. Olson, M. Pachr, B. S. Page, S. K. Pal, Y. Pandit, Y. Panebratsev, T. Pawlak, T. Peitzmann, V. Perevoztchikov, C. Perkins, W. Peryt, S. C. Phatak, P. Pile, M. Planinic, M. A. Ploskon, J. Pluta, D. Plyku, N. Poljak, A. M. Poskanzer, B. V. K. S. Potukuchi, C. B. Powell, D. Prindle, C. Pruneau, N. K. Pruthi, P. R. Pujahari, J. Putschke, R. Raniwala, S. Raniwala, R. L. Ray, R. Redwine, R. Reed, J. M. Rehberg, H. G. Ritter, J. B. Roberts, O. V. Rogachevskiy, J. L. Romero, A. Rose, C. Roy, L. Ruan, R. Sahoo, S. Sakai, I. Sakrejda, T. Sakuma, S. Salur, J. Sandweiss, E. Sangaline, J. Schambach, R. P. Scharenberg, N. Schmitz, T. R. Schuster, J. Seele, J. Seger, I. Selyuzhenkov, P. Seyboth, E. Shahaliev, M. Shao, M. Sharma, S. S. Shi, E. P. Sichtermann, F. Simon, R. N. Singaraju, M. J. Skoby, N. Smirnov, P. Sorensen, J. Sowinski, H. M. Spinka, B. Srivastava, T. D. S. Stanislaus, D. Staszak, J. R. Stevens, R. Stock, M. Strikhanov, B. Stringfellow, A. A. P. Suaide, M. C. Suarez, N. L. Subba, M. Sumbera, X. M. Sun, Y. Sun, Z. Sun, B. Surrow, T. J. M. Symons, A. Szanto de Toledo, J. Takahashi, A. H. Tang, Z. Tang, L. H. Tarini, T. Tarnowsky, D. Thein, J. H. Thomas, J. Tian, A. R. Timmins, S. Timoshenko, D. Tlusty, M. Tokarev, T. A. Trainor, V. N. Tram, S. Trentalange, R. E. Tribble, O. D. Tsai, J. Ulery, T. Ullrich, D. G. Underwood, G. Van Buren, M. van Leeuwen, G. van Nieuwenhuizen, J. A. Vanfossen, R. Varma, G. M. S. Vasconcelos, A. N. Vasiliev, F. Videbaek, Y. P. Viyogi, S. Vokal, S. A. Voloshin, M. Wada, M. Walker, F. Wang, G. Wang, H. Wang, J. S. Wang, Q. Wang, X. L. Wang, Y. Wang, G. Webb, J. C. Webb, G. D. Westfall, C. Whitten, H. Wieman, E. Wingfield, S. W. Wissink, R. Witt, Y. Wu, W. Xie, N. Xu, Q. H. Xu, W. Xu, Y. Xu, Z. Xu, L. Xue, Y. Yang, P. Yepes, K. Yip, I-K. Yoo, Q. Yue, M. Zawisza, H. Zbroszczyk, W. Zhan, S. Zhang, W. M. Zhang, X. P. Zhang, Y. Zhang, Z. P. Zhang, J. Zhao, C. Zhong, J. Zhou, W. Zhou, X. Zhu, Y. H. Zhu, R. Zoulkarneev, and Y. Zoulkarneeva
Subjects: Physics, Quantum chromodynamics, Nuclear and High Energy Physics, Particle physics, Antiparticle, Meson, 010308 nuclear & particles physics, Hadron, Drell–Yan process, Perturbative QCD, 01 natural sciences, Nuclear physics, Color model, Antimatter, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics
Abstract: We report on a measurement of the gamma(1S + 2S + 3S) -> e(+)e(-) cross section at midrapidity in p + p collisions at root s = 200 GeV. We find the cross section to be 114 +/- 38(stat + fit)(-24)(+23)(syst) pb. Perturbative QCD calculations at next-to-leading order in the color evaporation model are in agreement with our measurement, while calculations in the color singlet model underestimate it by 2 sigma. Our result is consistent with the trend seen in world data as a function of the center-of-mass energy of the collision and extends the availability of gamma data to RHIC energies. The dielectron continuum in the invariant-mass range near the gamma is also studied to obtain a combined yield of e(+)e(-) pairs from the sum of the Drell-Yan process and b-(b) over bar production.
Published: 2010

32. Measurement of the bottom quark contribution to nonphotonic electron production in p + p collisions at √s=200 GeV

Author: M M, Aggarwal, Z, Ahammed, A V, Alakhverdyants, I, Alekseev, J, Alford, B D, Anderson, Daniel, Anson, D, Arkhipkin, G S, Averichev, J, Balewski, L S, Barnby, S, Baumgart, D R, Beavis, R, Bellwied, M J, Betancourt, R R, Betts, A, Bhasin, A K, Bhati, H, Bichsel, J, Bielcik, J, Bielcikova, B, Biritz, L C, Bland, B E, Bonner, J, Bouchet, E, Braidot, A V, Brandin, A, Bridgeman, E, Bruna, S, Bueltmann, I, Bunzarov, T P, Burton, X Z, Cai, H, Caines, M, Calderón de la Barca Sánchez, O, Catu, D, Cebra, R, Cendejas, M C, Cervantes, Z, Chajecki, P, Chaloupka, S, Chattopadhyay, H F, Chen, J H, Chen, J Y, Chen, J, Cheng, M, Cherney, A, Chikanian, K E, Choi, W, Christie, P, Chung, R F, Clarke, M J M, Codrington, R, Corliss, J G, Cramer, H J, Crawford, D, Das, S, Dash, A, Davila Leyva, L C, De Silva, R R, Debbe, T G, Dedovich, A A, Derevschikov, R, Derradi de Souza, L, Didenko, P, Djawotho, S M, Dogra, X, Dong, J L, Drachenberg, J E, Draper, J C, Dunlop, M R, Dutta Mazumdar, L G, Efimov, E, Elhalhuli, M, Elnimr, J, Engelage, G, Eppley, B, Erazmus, M, Estienne, L, Eun, O, Evdokimov, P, Fachini, R, Fatemi, J, Fedorisin, R G, Fersch, P, Filip, E, Finch, V, Fine, Y, Fisyak, C A, Gagliardi, D R, Gangadharan, M S, Ganti, E J, Garcia-Solis, A, Geromitsos, F, Geurts, V, Ghazikhanian, P, Ghosh, Y N, Gorbunov, A, Gordon, O, Grebenyuk, D, Grosnick, S M, Guertin, A, Gupta, W, Guryn, B, Haag, A, Hamed, L-X, Han, J W, Harris, J P, Hays-Wehle, M, Heinz, S, Heppelmann, A, Hirsch, E, Hjort, A M, Hoffman, G W, Hoffmann, D J, Hofman, B, Huang, H Z, Huang, T J, Humanic, L, Huo, G, Igo, P, Jacobs, W W, Jacobs, C, Jena, F, Jin, C L, Jones, P G, Jones, J, Joseph, E G, Judd, S, Kabana, K, Kajimoto, K, Kang, J, Kapitan, K, Kauder, D, Keane, A, Kechechyan, D, Kettler, D P, Kikola, J, Kiryluk, A, Kisiel, V, Kizka, S R, Klein, A G, Knospe, A, Kocoloski, D D, Koetke, T, Kollegger, J, Konzer, I, Koralt, L, Koroleva, W, Korsch, L, Kotchenda, V, Kouchpil, P, Kravtsov, K, Krueger, M, Krus, L, Kumar, P, Kurnadi, M A C, Lamont, J M, Landgraf, S, Lapointe, J, Lauret, A, Lebedev, R, Lednicky, C-H, Lee, J H, Lee, W, Leight, M J, Levine, C, Li, L, Li, N, Li, W, Li, X, Li, Y, Li, Z M, Li, G, Lin, X Y, Lin, S J, Lindenbaum, M A, Lisa, F, Liu, H, Liu, J, Liu, T, Ljubicic, W J, Llope, R S, Longacre, W A, Love, Y, Lu, E V, Lukashov, X, Luo, G L, Ma, Y G, Ma, D P, Mahapatra, R, Majka, O I, Mall, L K, Mangotra, R, Manweiler, S, Margetis, C, Markert, H, Masui, H S, Matis, Yu A, Matulenko, D, McDonald, T S, McShane, A, Meschanin, R, Milner, N G, Minaev, S, Mioduszewski, A, Mischke, M K, Mitrovski, B, Mohanty, M M, Mondal, B, Morozov, D A, Morozov, M G, Munhoz, B K, Nandi, C, Nattrass, T K, Nayak, J M, Nelson, P K, Netrakanti, M J, Ng, L V, Nogach, S B, Nurushev, G, Odyniec, A, Ogawa, V, Okorokov, E W, Oldag, D, Olson, M, Pachr, B S, Page, S K, Pal, Y, Pandit, Y, Panebratsev, T, Pawlak, T, Peitzmann, V, Perevoztchikov, C, Perkins, W, Peryt, S C, Phatak, P, Pile, M, Planinic, M A, Ploskon, J, Pluta, D, Plyku, N, Poljak, A M, Poskanzer, B V K S, Potukuchi, C B, Powell, D, Prindle, C, Pruneau, N K, Pruthi, P R, Pujahari, J, Putschke, H, Qiu, R, Raniwala, S, Raniwala, R L, Ray, R, Redwine, R, Reed, H G, Ritter, J B, Roberts, O V, Rogachevskiy, J L, Romero, A, Rose, C, Roy, L, Ruan, R, Sahoo, S, Sakai, I, Sakrejda, T, Sakuma, S, Salur, J, Sandweiss, E, Sangaline, J, Schambach, R P, Scharenberg, N, Schmitz, T R, Schuster, J, Seele, J, Seger, I, Selyuzhenkov, P, Seyboth, E, Shahaliev, M, Shao, M, Sharma, S S, Shi, E P, Sichtermann, F, Simon, R N, Singaraju, M J, Skoby, N, Smirnov, P, Sorensen, J, Sowinski, H M, Spinka, B, Srivastava, T D S, Stanislaus, D, Staszak, J R, Stevens, R, Stock, M, Strikhanov, B, Stringfellow, A A P, Suaide, M C, Suarez, N L, Subba, M, Sumbera, X M, Sun, Y, Sun, Z, Sun, B, Surrow, D N, Svirida, T J M, Symons, A, Szanto de Toledo, J, Takahashi, A H, Tang, Z, Tang, L H, Tarini, T, Tarnowsky, D, Thein, J H, Thomas, J, Tian, A R, Timmins, S, Timoshenko, D, Tlusty, M, Tokarev, T A, Trainor, V N, Tram, S, Trentalange, R E, Tribble, O D, Tsai, J, Ulery, T, Ullrich, D G, Underwood, G, Van Buren, M, van Leeuwen, G, van Nieuwenhuizen, J A, Vanfossen, R, Varma, G M S, Vasconcelos, A N, Vasiliev, F, Videbaek, Y P, Viyogi, S, Vokal, S A, Voloshin, M, Wada, M, Walker, F, Wang, G, Wang, H, Wang, J S, Wang, Q, Wang, X L, Wang, Y, Wang, G, Webb, J C, Webb, G D, Westfall, C, Whitten, H, Wieman, S W, Wissink, R, Witt, Y F, Wu, W, Xie, H, Xu, N, Xu, Q H, Xu, W, Xu, Y, Xu, Z, Xu, L, Xue, Y, Yang, P, Yepes, K, Yip, I-K, Yoo, Q, Yue, M, Zawisza, H, Zbroszczyk, W, Zhan, J B, Zhang, S, Zhang, W M, Zhang, X P, Zhang, Y, Zhang, Z P, Zhang, J, Zhao, C, Zhong, J, Zhou, W, Zhou, X, Zhu, Y H, Zhu, R, Zoulkarneev, and Y, Zoulkarneeva
Abstract: The contribution of B meson decays to nonphotonic electrons, which are mainly produced by the semileptonic decays of heavy-flavor mesons, in p + p collisions at √s=200 GeV has been measured using azimuthal correlations between nonphotonic electrons and hadrons. The extracted B decay contribution is approximately 50% at a transverse momentum of pT≥5 GeV/c. These measurements constrain the nuclear modification factor for electrons from B and D meson decays. The result indicates that B meson production in heavy ion collisions is also suppressed at high pT.
Published: 2010

33. Inclusiveπ0,η, and direct photon production at high transverse momentum inp+pandd+Aucollisions atsNN=200GeV

Author: B. I. Abelev, M. M. Aggarwal, Z. Ahammed, A. V. Alakhverdyants, B. D. Anderson, D. Arkhipkin, G. S. Averichev, J. Balewski, O. Barannikova, L. S. Barnby, S. Baumgart, D. R. Beavis, R. Bellwied, F. Benedosso, M. J. Betancourt, R. R. Betts, A. Bhasin, A. K. Bhati, H. Bichsel, J. Bielcik, J. Bielcikova, B. Biritz, L. C. Bland, B. E. Bonner, J. Bouchet, E. Braidot, A. V. Brandin, A. Bridgeman, E. Bruna, S. Bueltmann, I. Bunzarov, T. P. Burton, X. Z. Cai, H. Caines, M. Calderón de la Barca Sánchez, O. Catu, D. Cebra, R. Cendejas, M. C. Cervantes, Z. Chajecki, P. Chaloupka, S. Chattopadhyay, H. F. Chen, J. H. Chen, J. Y. Chen, J. Cheng, M. Cherney, A. Chikanian, K. E. Choi, W. Christie, P. Chung, R. F. Clarke, M. J. M. Codrington, R. Corliss, J. G. Cramer, H. J. Crawford, D. Das, S. Dash, A. Davila Leyva, L. C. De Silva, R. R. Debbe, T. G. Dedovich, M. DePhillips, A. A. Derevschikov, R. Derradi de Souza, L. Didenko, P. Djawotho, S. M. Dogra, X. Dong, J. L. Drachenberg, J. E. Draper, J. C. Dunlop, M. R. Dutta Mazumdar, L. G. Efimov, E. Elhalhuli, M. Elnimr, J. Engelage, G. Eppley, B. Erazmus, M. Estienne, L. Eun, P. Fachini, R. Fatemi, J. Fedorisin, R. G. Fersch, P. Filip, E. Finch, V. Fine, Y. Fisyak, C. A. Gagliardi, D. R. Gangadharan, M. S. Ganti, E. J. Garcia-Solis, A. Geromitsos, F. Geurts, V. Ghazikhanian, P. Ghosh, Y. N. Gorbunov, A. Gordon, O. Grebenyuk, D. Grosnick, B. Grube, S. M. Guertin, A. Gupta, N. Gupta, W. Guryn, B. Haag, T. J. Hallman, A. Hamed, L.-X. Han, J. W. Harris, J. P. Hays-Wehle, M. Heinz, S. Heppelmann, A. Hirsch, E. Hjort, A. M. Hoffman, G. W. Hoffmann, D. J. Hofman, R. S. Hollis, H. Z. Huang, T. J. Humanic, L. Huo, G. Igo, A. Iordanova, P. Jacobs, W. W. Jacobs, P. Jakl, C. Jena, F. Jin, C. L. Jones, P. G. Jones, J. Joseph, E. G. Judd, S. Kabana, K. Kajimoto, K. Kang, J. Kapitan, K. Kauder, D. Keane, A. Kechechyan, D. Kettler, D. P. Kikola, J. Kiryluk, A. Kisiel, S. R. Klein, A. G. Knospe, A. Kocoloski, D. D. Koetke, T. Kollegger, J. Konzer, M. Kopytine, I. Koralt, W. Korsch, L. Kotchenda, V. Kouchpil, P. Kravtsov, K. Krueger, M. Krus, L. Kumar, P. Kurnadi, M. A. C. Lamont, J. M. Landgraf, S. LaPointe, J. Lauret, A. Lebedev, R. Lednicky, C.-H. Lee, J. H. Lee, W. Leight, M. J. LeVine, C. Li, L. Li, N. Li, W. Li, X. Li, Y. Li, Z. Li, G. Lin, S. J. Lindenbaum, M. A. Lisa, F. Liu, H. Liu, J. Liu, T. Ljubicic, W. J. Llope, R. S. Longacre, W. A. Love, Y. Lu, G. L. Ma, Y. G. Ma, D. P. Mahapatra, R. Majka, O. I. Mall, L. K. Mangotra, R. Manweiler, S. Margetis, C. Markert, H. Masui, H. S. Matis, Yu. A. Matulenko, D. McDonald, T. S. McShane, A. Meschanin, R. Milner, N. G. Minaev, S. Mioduszewski, A. Mischke, M. K. Mitrovski, B. Mohanty, M. M. Mondal, D. A. Morozov, M. G. Munhoz, B. K. Nandi, C. Nattrass, T. K. Nayak, J. M. Nelson, P. K. Netrakanti, M. J. Ng, L. V. Nogach, S. B. Nurushev, G. Odyniec, A. Ogawa, H. Okada, V. Okorokov, D. Olson, M. Pachr, B. S. Page, S. K. Pal, Y. Pandit, Y. Panebratsev, T. Pawlak, T. Peitzmann, V. Perevoztchikov, C. Perkins, W. Peryt, S. C. Phatak, P. Pile, M. Planinic, M. A. Ploskon, J. Pluta, D. Plyku, N. Poljak, A. M. Poskanzer, B. V. K. S. Potukuchi, C. B. Powell, D. Prindle, C. Pruneau, N. K. Pruthi, P. R. Pujahari, J. Putschke, R. Raniwala, S. Raniwala, R. L. Ray, R. Redwine, R. Reed, J. M. Rehberg, H. G. Ritter, J. B. Roberts, O. V. Rogachevskiy, J. L. Romero, A. Rose, C. Roy, L. Ruan, M. J. Russcher, R. Sahoo, S. Sakai, I. Sakrejda, T. Sakuma, S. Salur, J. Sandweiss, E. Sangaline, J. Schambach, R. P. Scharenberg, N. Schmitz, T. R. Schuster, J. Seele, J. Seger, I. Selyuzhenkov, P. Seyboth, E. Shahaliev, M. Shao, M. Sharma, S. S. Shi, E. P. Sichtermann, F. Simon, R. N. Singaraju, M. J. Skoby, N. Smirnov, P. Sorensen, J. Sowinski, H. M. Spinka, B. Srivastava, T. D. S. Stanislaus, D. Staszak, J. R. Stevens, R. Stock, M. Strikhanov, B. Stringfellow, A. A. P. Suaide, M. C. Suarez, N. L. Subba, M. Sumbera, X. M. Sun, Y. Sun, Z. Sun, B. Surrow, T. J. M. Symons, A. Szanto de Toledo, J. Takahashi, A. H. Tang, Z. Tang, L. H. Tarini, T. Tarnowsky, D. Thein, J. H. Thomas, J. Tian, A. R. Timmins, S. Timoshenko, D. Tlusty, M. Tokarev, T. A. Trainor, V. N. Tram, S. Trentalange, R. E. Tribble, O. D. Tsai, J. Ulery, T. Ullrich, D. G. Underwood, G. Van Buren, G. van Nieuwenhuizen, J. A. Vanfossen, R. Varma, G. M. S. Vasconcelos, A. N. Vasiliev, F. Videbaek, Y. P. Viyogi, S. Vokal, S. A. Voloshin, M. Wada, M. Walker, F. Wang, G. Wang, H. Wang, J. S. Wang, Q. Wang, X. Wang, X. L. Wang, Y. Wang, G. Webb, J. C. Webb, G. D. Westfall, C. Whitten, H. Wieman, E. Wingfield, S. W. Wissink, R. Witt, Y. Wu, W. Xie, N. Xu, Q. H. Xu, W. Xu, Y. Xu, Z. Xu, L. Xue, Y. Yang, P. Yepes, K. Yip, I.-K. Yoo, Q. Yue, M. Zawisza, H. Zbroszczyk, W. Zhan, S. Zhang, W. M. Zhang, X. P. Zhang, Y. Zhang, Z. P. Zhang, J. Zhao, C. Zhong, J. Zhou, W. Zhou, X. Zhu, Y. H. Zhu, R. Zoulkarneev, and Y. Zoulkarneeva
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Photon, Meson, 010308 nuclear & particles physics, Hadron, Perturbative QCD, Elementary particle, 7. Clean energy, 01 natural sciences, Nuclear physics, Particle decay, Pion, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider
Abstract: We report a measurement of high-p(T) inclusive pi(0), eta, and direct photon production in p + p and d + Au collisions at root s(NN) = 200 GeV at midrapidity (0 gamma gamma were detected in the barrel electromagnetic calorimeter of the STAR experiment at the Relativistic Heavy Ion Collider. The eta -> gamma gamma decay was also observed and constituted the first eta measurement by STAR. The first direct photon cross-section measurement by STAR is also presented; the signal was extracted statistically by subtracting the pi(0), eta, and omega(782) decay background from the inclusive photon distribution observed in the calorimeter. The analysis is described in detail, and the results are found to be in good agreement with earlier measurements and with next-to-leading-order perturbative QCD calculations.
Published: 2010

34. Observation of charge-dependent azimuthal correlations and possible local strong parity violation in heavy-ion collisions

Author: L. H. Tarini, M. DePhillips, G. Eppley, I. Bnzarov, G. Van Buren, Michal Sumbera, Xu Cai, Hank Crawford, J. Pluta, S. S. Shi, T. S. McShane, J. Engelage, T. W. Ludlam, L. K. Mangotra, S. W. Wissink, A. Ridiger, J. M. Nelson, S. Baumgart, R. S. Longacre, Nikola Poljak, A. Geromitsos, Matthew Walker, J. H. Thomas, K. Kajimoto, Saskia Mioduszewski, Premomoy Ghosh, M. Zawisza, H. M. Spinka, D. Kettler, R. Manweiler, Hongfang Liu, Jongmin Lee, Yan Li, Jing-Han Chen, W. Peryt, R. E. Tribble, R. L. Ray, J. M. Landgraf, G. S. Averichev, S. Kabana, Y. P. Viyogi, T. J. Humanic, L. Kotchenda, Gerald W Hoffmann, Debasish Das, Raghunath Sahoo, B. Haag, C. A. Whitten, Feng Jin, M. Strikhanov, S. Heppelmann, A. Chikanian, J. L. Drachenberg, D. Staszak, Qian Yue, R. Varma, A. M. Poskanzer, V. N. Tram, J. Ulery, A. Lebedev, O. Catu, I. Sakrejda, M. Heinz, Lee Stuart Barnby, Yu A. Matulenko, B. S. Page, J. Konzer, G. Igo, L. Ruan, Anju Bhasin, H. Caines, Ki-Seok Choi, R. Corliss, R. Fatemi, Michael Joseph Betancourt, D. P. Kikola, B. Stringfellow, E. Hjort, Y. Fisyak, S. Bueltmann, Zebo Tang, J. Bouchet, S. Zhang, J. Sandweiss, Jana Bielcikova, B. E. Bonner, B. Erazmus, R. P. Redwine, K. Kauder, D. Arkhipkin, A. Hamed, Z. Chajecki, A. Feng, H. G. Ritter, Y. F. Wu, Christine Nattrass, T. Ljubicic, Subhasis Chattopadhyay, Andrew Rose, I. K. Yoo, J. X. Zuo, O. Barannikova, R. Bellwied, Y. Zhao, D. D. Koetke, L. G. Efimov, Y. Yang, K. Kang, S. J. Lindenbaum, X. R. Wang, K. Krueger, J. G. Cramer, V. Ghazikhanian, Jay Roberts, S. LaPointe, A. Kechechyan, Andre Mischke, M. Krus, N. Li, A. Kocoloski, Jaroslav Bielcik, J. A. Vanfossen, Neeraj Gupta, Haiyan Wang, D. Cebra, Russell Richard Betts, A. Iordanova, R. Cendejas, S. Dash, A. Bridgeman, A. Gordon, L. C. Bland, Z. J. Sun, Q. H. Xu, D. R. Gangadharan, E. G. Judd, S. Trentalange, J. L. Romero, S. M. Guertin, M. Estienne, Alexandre Alarcon Do Passo Suaide, C. Perkins, D. Thein, G. Wang, T. Peitzmann, M. Sharma, B. D. Anderson, R. N. Singaraju, L. Huo, A. P. Meschanin, P. Seyboth, E. J. Garcia-Solis, O. D. Tsai, Elena Bruna, Sudhir Raniwala, J. W. Harris, Z. Xu, G. Lin, Sergei A. Voloshin, N. G. Minaev, D. P. Mahapatra, R. S. Hollis, E. Finch, H. Bichsel, Anik Gupta, R. Derradi de Souza, B. I. Abelev, N. K. Pruthi, G. Odyniec, Y. Zoulkarneeva, M. Kopytine, P. Sorensen, X. H. Shi, M. R. Dutta Mazumdar, K. Yip, L. Liu, C. L. Jones, Bedangadas Mohanty, J. S. Wang, Jianping Cheng, M. Cherney, M. Elnimr, Basanta Kumar Nandi, J. E. Draper, M. J. Skoby, Frank Jm Geurts, J. C. Dunlop, M. C. Suarez, M. J. M. Codrington, H. Z. Huang, S. Vokal, Thomas Michael Cormier, E. Elhalhuli, Lokesh Kumar, Peter Graham Jones, P. Yepes, Yifu Sun, Zubayer Ahammed, I. Koralt, B. Biritz, Jifa Tian, V. A. Okorokov, M. C. Cervantes, A. H. Tang, O. V. Rogachevskiy, P. R. Pujahari, M. J. LeVine, T. D. S. Stanislaus, F. Videbæk, G. Webb, C. Roy, H. H. Wieman, Q. Wang, David Jonathan Hofman, T. P. Burton, M. J. Russcher, P. Chung, D. G. Underwood, E. P. Sichtermann, J. Kiryluk, Yannis K. Semertzidis, L. V. Nogach, M. J. Ng, M. Wada, J. Joseph, D. A. Morozov, Mikhail Tokarev, H. Masui, G. M.S. Vasconcelos, M. S. Daugherity, Jorn Henning Putschke, M. S. Ganti, J. Seele, Y. Pandit, A. V. Brandin, L. Didenko, J. Balewski, Rashmi Raniwala, R. Milner, H. Okada, W. Christie, V. I. Kravtsov, P. Chaloupka, N. Schmitz, P. Fachini, W. Xie, E. Shahaliev, Chitrasen Jena, Claude Andre Pruneau, H. F. Chen, Y. P. Lu, V. Perevoztchikov, F. Liu, X. Zhu, Ermes Braidot, G. Van Nieuwenhuizen, Peter Martin Jacobs, Xiang Sun, W. A. Love, Adam Ryszard Kisiel, Jing Zhou, Guo-Liang Ma, William Axel Leight, T. Ullrich, J. Takahashi, A. S. Hirsch, J. C. Webb, Mateusz Andrzej Ploskon, R. Witt, Marcelo Gameiro Munhoz, D. J. Prindle, P. Kravtsov, R. Zoulkarneev, P. Kurnadi, S. B. Nurushev, S. R. Klein, R. D. Majka, L. Eun, N. L. Subba, V. Yu Khodyrev, Donika Plyku, D. L. Olson, Subrata Pal, Donald M. McDonald, M. A. Lisa, Zhenyu Zhang, J. Sowinski, J. Y. Chen, S. Margetis, R. F. Clarke, J. Schambach, X. L. Wang, C. Zhong, B. K. Srivastava, M. R. Cosentino, Sevil Salur, Y. Wang, M. Shao, X. Dong, Madan M. Aggarwal, Fuqiang Wang, A. A. Derevschikov, W. M. Zhang, Andrey Vasiliev, T. J. Hallman, Y. Panebratsev, Janet Elizabeth Seger, T. J. M. Symons, A. M. Hoffman, F. Benedosso, Yong Xu, D. Grosnick, V. Kouchpil, K. S.F.F. Guimaraes, V. Dzhordzhadze, L. C. De Silva, Yi Zhang, W. L. Zhan, Rolf K. Reed, Frank Simon, T. G. Dedovich, T. Sakuma, S. C. Phatak, I. Selyuzhenkov, A. Szanto de Toledo, J. Kapitan, V. Fine, A. R. Timmins, S. M. Dogra, Bernd Surrow, T. Pawlak, A. K. Bhati, D. Keane, Nikolai Smirnov, Xiaoping Zhang, A. V. Alakhverdyants, C-H. Lee, T. K. Nayak, Pawan Kumar Netrakanti, B. Grube, W. Guryn, O. G. Grebenyuk, J. Fedorisin, C. A. Gagliardi, A. G. Knospe, M. Pachr, W. J. Llope, Jie Liu, Hanna Paulina Zbroszczyk, D. R. Beavis, M. Calderón De La Barca Sánchez, O. I. Mall, M. A.C. Lamont, B. V.K.S. Potukuchi, Yu-Gang Ma, N. Xu, P. Filip, C-Q. Li, S. Sakai, P. Pile, G. D. Westfall, R. P. Scharenberg, Christina Markert, Petr Jákl, H. S. Matis, W. W. Jacobs, J. Lauret, R. Lednicky, T. Tarnowsky, P. Djawotho, Sergey Timoshenko, Wolfgang Korsch, A. Ogawa, D. Tlusty, Mirko Planinic, Y. N. Gorbunov, Laboratoire SUBATECH Nantes (SUBATECH), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Nantes (UN)-Mines Nantes (Mines Nantes), and STAR
Subjects: Quark, Nuclear and High Energy Physics, Particle physics, dependence rapidity dependence transverse momentum, Star, Nuclear Theory, Vacuum, [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], dependence 62, FOS: Physical sciences, Relativistic Nuclear Collisions, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], scattering gold copper quantum chromodynamics, 01 natural sciences, Nuclear Theory (nucl-th), Nuclear physics, angular correlation topological Monte Carlo STAR Brookhaven RHIC Coll impact parameter, 0103 physical sciences, 11.30.Er, 11.30.Qc, 25.75.Ld, 25.75.Nq, Nuclear Experiment (nucl-ex), Nuclear Experiment, 010306 general physics, Physics, Quantum chromodynamics, Matter, 010308 nuclear & particles physics, Elliptic flow, Parity (physics), Observable, Fermion, Collaboration, NATURAL SCIENCES. Physics, PRIRODNE ZNANOSTI. Fizika, parity, Elliptic Flow, violation heavy ion, Time Projection Chamber, Perspective, Quark–gluon plasma, 200 GeV-cms/nucleon, Quark-Gluon Plasma, (3particle) charged particle, Hot Qcd, vacuum state correlation function, STAR detector
Abstract: Parity-odd domains, corresponding to non-trivial topological solutions of the QCD vacuum, might be created during relativistic heavy-ion collisions. These domains are predicted to lead to charge separation of quarks along the orbital momentum of the system created in non-central collisions. To study this effect, we investigate a three particle mixed harmonics azimuthal correlator which is a \P-even observable, but directly sensitive to the charge separation effect. We report measurements of this observable using the STAR detector in Au+Au and Cu+Cu collisions at $\sqrt{s_{NN}}$=200 and 62~GeV. The results are presented as a function of collision centrality, particle separation in rapidity, and particle transverse momentum. A signal consistent with several of the theoretical expectations is detected in all four data sets. We compare our results to the predictions of existing event generators, and discuss in detail possible contributions from other effects that are not related to parity violation., Comment: 17 pages, 14 figures, as accepted for publication in Physical Review C.
Published: 2010

35. Spectra of identified high-pTπ±andp(p¯)inCu+Cucollisions atsNN=200GeV

Author: B. I. Abelev, M. M. Aggarwal, Z. Ahammed, A. V. Alakhverdyants, B. D. Anderson, D. Arkhipkin, G. S. Averichev, J. Balewski, L. S. Barnby, S. Baumgart, D. R. Beavis, R. Bellwied, F. Benedosso, M. J. Betancourt, R. R. Betts, A. Bhasin, A. K. Bhati, H. Bichsel, J. Bielcik, J. Bielcikova, B. Biritz, L. C. Bland, B. E. Bonner, J. Bouchet, E. Braidot, A. V. Brandin, A. Bridgeman, E. Bruna, S. Bueltmann, I. Bunzarov, T. P. Burton, X. Z. Cai, H. Caines, M. Calderón de la Barca Sánchez, O. Catu, D. Cebra, R. Cendejas, M. C. Cervantes, Z. Chajecki, P. Chaloupka, S. Chattopadhyay, H. F. Chen, J. H. Chen, J. Y. Chen, J. Cheng, M. Cherney, A. Chikanian, K. E. Choi, W. Christie, P. Chung, R. F. Clarke, M. J. M. Codrington, R. Corliss, J. G. Cramer, H. J. Crawford, D. Das, S. Dash, A. Davila Leyva, L. C. De Silva, R. R. Debbe, T. G. Dedovich, M. DePhillips, A. A. Derevschikov, R. Derradi de Souza, L. Didenko, P. Djawotho, S. M. Dogra, X. Dong, J. L. Drachenberg, J. E. Draper, J. C. Dunlop, M. R. Dutta Mazumdar, L. G. Efimov, E. Elhalhuli, M. Elnimr, J. Engelage, G. Eppley, B. Erazmus, M. Estienne, L. Eun, O. Evdokimov, P. Fachini, R. Fatemi, J. Fedorisin, R. G. Fersch, P. Filip, E. Finch, V. Fine, Y. Fisyak, C. A. Gagliardi, D. R. Gangadharan, M. S. Ganti, E. J. Garcia-Solis, A. Geromitsos, F. Geurts, V. Ghazikhanian, P. Ghosh, Y. N. Gorbunov, A. Gordon, O. Grebenyuk, D. Grosnick, B. Grube, S. M. Guertin, A. Gupta, N. Gupta, W. Guryn, B. Haag, T. J. Hallman, A. Hamed, L.-X. Han, J. W. Harris, J. P. Hays-Wehle, M. Heinz, S. Heppelmann, A. Hirsch, E. Hjort, A. M. Hoffman, G. W. Hoffmann, D. J. Hofman, R. S. Hollis, H. Z. Huang, T. J. Humanic, L. Huo, G. Igo, A. Iordanova, P. Jacobs, W. W. Jacobs, P. Jakl, C. Jena, F. Jin, C. L. Jones, P. G. Jones, J. Joseph, E. G. Judd, S. Kabana, K. Kajimoto, K. Kang, J. Kapitan, K. Kauder, D. Keane, A. Kechechyan, D. Kettler, D. P. Kikola, J. Kiryluk, A. Kisiel, S. R. Klein, A. G. Knospe, A. Kocoloski, D. D. Koetke, T. Kollegger, J. Konzer, M. Kopytine, I. Koralt, W. Korsch, L. Kotchenda, V. Kouchpil, P. Kravtsov, K. Krueger, M. Krus, L. Kumar, P. Kurnadi, M. A. C. Lamont, J. M. Landgraf, S. LaPointe, J. Lauret, A. Lebedev, R. Lednicky, C.-H. Lee, J. H. Lee, W. Leight, M. J. LeVine, C. Li, L. Li, N. Li, W. Li, X. Li, Y. Li, Z. Li, G. Lin, S. J. Lindenbaum, M. A. Lisa, F. Liu, H. Liu, J. Liu, T. Ljubicic, W. J. Llope, R. S. Longacre, W. A. Love, Y. Lu, G. L. Ma, Y. G. Ma, D. P. Mahapatra, R. Majka, O. I. Mall, L. K. Mangotra, R. Manweiler, S. Margetis, C. Markert, H. Masui, H. S. Matis, Yu. A. Matulenko, D. McDonald, T. S. McShane, A. Meschanin, R. Milner, N. G. Minaev, S. Mioduszewski, A. Mischke, M. K. Mitrovski, B. Mohanty, M. M. Mondal, D. A. Morozov, M. G. Munhoz, B. K. Nandi, C. Nattrass, T. K. Nayak, J. M. Nelson, P. K. Netrakanti, M. J. Ng, L. V. Nogach, S. B. Nurushev, G. Odyniec, A. Ogawa, H. Okada, V. Okorokov, D. Olson, M. Pachr, B. S. Page, S. K. Pal, Y. Pandit, Y. Panebratsev, T. Pawlak, T. Peitzmann, V. Perevoztchikov, C. Perkins, W. Peryt, S. C. Phatak, P. Pile, M. Planinic, M. A. Ploskon, J. Pluta, D. Plyku, N. Poljak, A. M. Poskanzer, B. V. K. S. Potukuchi, C. B. Powell, D. Prindle, C. Pruneau, N. K. Pruthi, P. R. Pujahari, J. Putschke, R. Raniwala, S. Raniwala, R. L. Ray, R. Redwine, R. Reed, J. M. Rehberg, H. G. Ritter, J. B. Roberts, O. V. Rogachevskiy, J. L. Romero, A. Rose, C. Roy, L. Ruan, M. J. Russcher, R. Sahoo, S. Sakai, I. Sakrejda, T. Sakuma, S. Salur, J. Sandweiss, E. Sangaline, J. Schambach, R. P. Scharenberg, N. Schmitz, T. R. Schuster, J. Seele, J. Seger, I. Selyuzhenkov, P. Seyboth, E. Shahaliev, M. Shao, M. Sharma, S. S. Shi, E. P. Sichtermann, F. Simon, R. N. Singaraju, M. J. Skoby, N. Smirnov, P. Sorensen, J. Sowinski, H. M. Spinka, B. Srivastava, T. D. S. Stanislaus, D. Staszak, J. R. Stevens, R. Stock, M. Strikhanov, B. Stringfellow, A. A. P. Suaide, M. C. Suarez, N. L. Subba, M. Sumbera, X. M. Sun, Y. Sun, Z. Sun, B. Surrow, T. J. M. Symons, A. Szanto de Toledo, J. Takahashi, A. H. Tang, Z. Tang, L. H. Tarini, T. Tarnowsky, D. Thein, J. H. Thomas, J. Tian, A. R. Timmins, S. Timoshenko, D. Tlusty, M. Tokarev, T. A. Trainor, V. N. Tram, S. Trentalange, R. E. Tribble, O. D. Tsai, J. Ulery, T. Ullrich, D. G. Underwood, G. Van Buren, G. van Nieuwenhuizen, J. A. Vanfossen, R. Varma, G. M. S. Vasconcelos, A. N. Vasiliev, F. Videbaek, Y. P. Viyogi, S. Vokal, S. A. Voloshin, M. Wada, M. Walker, F. Wang, G. Wang, H. Wang, J. S. Wang, Q. Wang, X. Wang, X. L. Wang, Y. Wang, G. Webb, J. C. Webb, G. D. Westfall, C. Whitten, H. Wieman, E. Wingfield, S. W. Wissink, R. Witt, Y. Wu, W. Xie, N. Xu, Q. H. Xu, W. Xu, Y. Xu, Z. Xu, L. Xue, Y. Yang, P. Yepes, K. Yip, I.-K. Yoo, Q. Yue, M. Zawisza, H. Zbroszczyk, W. Zhan, S. Zhang, W. M. Zhang, X. P. Zhang, Y. Zhang, Z. P. Zhang, J. Zhao, C. Zhong, J. Zhou, W. Zhou, X. Zhu, Y. H. Zhu, R. Zoulkarneev, and Y. Zoulkarneeva
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Proton, Meson, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Nuclear Theory, Hadron, 01 natural sciences, Baryon, Pion, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider, QCD matter, STAR detector
Abstract: We report new results on identified (anti)proton and charged pion spectra at large transverse momenta ($3l{p}_{T}l10$ GeV$/c$) from $\mathrm{Cu}+\mathrm{Cu}$ collisions at $\sqrt{{s}_{\mathit{NN}}}=200$ GeV using the STAR detector at the Relativistic Heavy Ion Collider (RHIC). This study explores the system size dependence of two novel features observed at RHIC with heavy ions: the hadron suppression at high-${p}_{T}$ and the anomalous baryon to meson enhancement at intermediate transverse momenta. Both phenomena could be attributed to the creation of a new form of QCD matter. The results presented here bridge the system size gap between the available $\mathit{pp}$ and $\mathrm{Au}+\mathrm{Au}$ data, and allow for a detailed exploration of the onset of the novel features. Comparative analysis of all available 200 GeV data indicates that the system size is a major factor determining both the magnitude of the hadron spectra suppression at large transverse momenta and the relative baryon to meson enhancement.
Published: 2010

36. Charged and strange hadron elliptic flow inCu+Cucollisions atsNN=62.4and 200 GeV

Author: B. I. Abelev, M. M. Aggarwal, Z. Ahammed, A. V. Alakhverdyants, I. Alekseev, B. D. Anderson, D. Arkhipkin, G. S. Averichev, J. Balewski, L. S. Barnby, S. Baumgart, D. R. Beavis, R. Bellwied, M. J. Betancourt, R. R. Betts, A. Bhasin, A. K. Bhati, H. Bichsel, J. Bielcik, J. Bielcikova, B. Biritz, L. C. Bland, B. E. Bonner, J. Bouchet, E. Braidot, A. V. Brandin, A. Bridgeman, E. Bruna, S. Bueltmann, I. Bunzarov, T. P. Burton, X. Z. Cai, H. Caines, M. Calderón de la Barca Sánchez, O. Catu, D. Cebra, R. Cendejas, M. C. Cervantes, Z. Chajecki, P. Chaloupka, S. Chattopadhyay, H. F. Chen, J. H. Chen, J. Y. Chen, J. Cheng, M. Cherney, A. Chikanian, K. E. Choi, W. Christie, P. Chung, R. F. Clarke, M. J. M. Codrington, R. Corliss, J. G. Cramer, H. J. Crawford, D. Das, S. Dash, A. Davila Leyva, L. C. De Silva, R. R. Debbe, T. G. Dedovich, M. DePhillips, A. A. Derevschikov, R. Derradi de Souza, L. Didenko, P. Djawotho, S. M. Dogra, X. Dong, J. L. Drachenberg, J. E. Draper, J. C. Dunlop, M. R. Dutta Mazumdar, L. G. Efimov, E. Elhalhuli, M. Elnimr, J. Engelage, G. Eppley, B. Erazmus, M. Estienne, L. Eun, O. Evdokimov, P. Fachini, R. Fatemi, J. Fedorisin, R. G. Fersch, P. Filip, E. Finch, V. Fine, Y. Fisyak, C. A. Gagliardi, D. R. Gangadharan, M. S. Ganti, E. J. Garcia-Solis, A. Geromitsos, F. Geurts, V. Ghazikhanian, P. Ghosh, Y. N. Gorbunov, A. Gordon, O. Grebenyuk, D. Grosnick, B. Grube, S. M. Guertin, A. Gupta, N. Gupta, W. Guryn, B. Haag, A. Hamed, L.-X. Han, J. W. Harris, J. P. Hays-Wehle, M. Heinz, S. Heppelmann, A. Hirsch, E. Hjort, A. M. Hoffman, G. W. Hoffmann, D. J. Hofman, R. S. Hollis, H. Z. Huang, T. J. Humanic, L. Huo, G. Igo, A. Iordanova, P. Jacobs, W. W. Jacobs, P. Jakl, C. Jena, F. Jin, C. L. Jones, P. G. Jones, J. Joseph, E. G. Judd, S. Kabana, K. Kajimoto, K. Kang, J. Kapitan, K. Kauder, D. Keane, A. Kechechyan, D. Kettler, D. P. Kikola, J. Kiryluk, A. Kisiel, S. R. Klein, A. G. Knospe, A. Kocoloski, D. D. Koetke, T. Kollegger, J. Konzer, M. Kopytine, I. Koralt, L. Koroleva, W. Korsch, L. Kotchenda, V. Kouchpil, P. Kravtsov, K. Krueger, M. Krus, L. Kumar, P. Kurnadi, M. A. C. Lamont, J. M. Landgraf, S. LaPointe, J. Lauret, A. Lebedev, R. Lednicky, C.-H. Lee, J. H. Lee, W. Leight, M. J. LeVine, C. Li, L. Li, N. Li, W. Li, X. Li, Y. Li, Z. Li, G. Lin, S. J. Lindenbaum, M. A. Lisa, F. Liu, H. Liu, J. Liu, T. Ljubicic, W. J. Llope, R. S. Longacre, W. A. Love, Y. Lu, G. L. Ma, Y. G. Ma, D. P. Mahapatra, R. Majka, O. I. Mall, L. K. Mangotra, R. Manweiler, S. Margetis, C. Markert, H. Masui, H. S. Matis, Yu. A. Matulenko, D. McDonald, T. S. McShane, A. Meschanin, R. Milner, N. G. Minaev, S. Mioduszewski, A. Mischke, M. K. Mitrovski, B. Mohanty, M. M. Mondal, B. Morozov, D. A. Morozov, M. G. Munhoz, B. K. Nandi, C. Nattrass, T. K. Nayak, J. M. Nelson, P. K. Netrakanti, M. J. Ng, L. V. Nogach, S. B. Nurushev, G. Odyniec, A. Ogawa, H. Okada, V. Okorokov, D. Olson, M. Pachr, B. S. Page, S. K. Pal, Y. Pandit, Y. Panebratsev, T. Pawlak, T. Peitzmann, V. Perevoztchikov, C. Perkins, W. Peryt, S. C. Phatak, P. Pile, M. Planinic, M. A. Ploskon, J. Pluta, D. Plyku, N. Poljak, A. M. Poskanzer, B. V. K. S. Potukuchi, C. B. Powell, D. Prindle, C. Pruneau, N. K. Pruthi, P. R. Pujahari, J. Putschke, R. Raniwala, S. Raniwala, R. L. Ray, R. Redwine, R. Reed, J. M. Rehberg, H. G. Ritter, J. B. Roberts, O. V. Rogachevskiy, J. L. Romero, A. Rose, C. Roy, L. Ruan, R. Sahoo, S. Sakai, I. Sakrejda, T. Sakuma, S. Salur, J. Sandweiss, E. Sangaline, J. Schambach, R. P. Scharenberg, N. Schmitz, T. R. Schuster, J. Seele, J. Seger, I. Selyuzhenkov, P. Seyboth, E. Shahaliev, M. Shao, M. Sharma, S. S. Shi, X. H. Shi, E. P. Sichtermann, F. Simon, R. N. Singaraju, M. J. Skoby, N. Smirnov, P. Sorensen, J. Sowinski, H. M. Spinka, B. Srivastava, T. D. S. Stanislaus, D. Staszak, J. R. Stevens, R. Stock, M. Strikhanov, B. Stringfellow, A. A. P. Suaide, M. C. Suarez, N. L. Subba, M. Sumbera, X. M. Sun, Y. Sun, Z. Sun, B. Surrow, D. N. Svirida, T. J. M. Symons, A. Szanto de Toledo, J. Takahashi, A. H. Tang, Z. Tang, L. H. Tarini, T. Tarnowsky, D. Thein, J. H. Thomas, J. Tian, A. R. Timmins, S. Timoshenko, D. Tlusty, M. Tokarev, V. N. Tram, S. Trentalange, R. E. Tribble, O. D. Tsai, J. Ulery, T. Ullrich, D. G. Underwood, G. Van Buren, M. van Leeuwen, G. van Nieuwenhuizen, J. A. Vanfossen, R. Varma, G. M. S. Vasconcelos, A. N. Vasiliev, F. Videbaek, Y. P. Viyogi, S. Vokal, S. A. Voloshin, M. Wada, M. Walker, F. Wang, G. Wang, H. Wang, J. S. Wang, Q. Wang, X. L. Wang, Y. Wang, G. Webb, J. C. Webb, G. D. Westfall, C. Whitten, H. Wieman, E. Wingfield, S. W. Wissink, R. Witt, Y. Wu, W. Xie, N. Xu, Q. H. Xu, W. Xu, Y. Xu, Z. Xu, L. Xue, Y. Yang, P. Yepes, K. Yip, I.-K. Yoo, Q. Yue, M. Zawisza, H. Zbroszczyk, W. Zhan, S. Zhang, W. M. Zhang, X. P. Zhang, Y. Zhang, Z. P. Zhang, J. Zhao, C. Zhong, J. Zhou, W. Zhou, X. Zhu, Y. H. Zhu, R. Zoulkarneev, and Y. Zoulkarneeva
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Meson, 010308 nuclear & particles physics, Elliptic flow, Hadron, Elementary particle, Kinetic energy, 01 natural sciences, Nuclear physics, 0103 physical sciences, Quark–gluon plasma, High Energy Physics::Experiment, Rapidity, Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider
Abstract: We present the results of an elliptic flow, v(2), analysis of Cu + Cu collisions recorded with the solenoidal tracker detector (STAR) at the BNL Relativistic Heavy Ion Collider at root s(NN) = 62.4 and 200 GeV. Elliptic flow as a function of transverse momentum, v(2)(p(T)), is reported for different collision centralities for charged hadrons h(+/-) and strangeness-ontaining hadrons K(S)(0), Lambda, Xi, and phi in the midrapidity region vertical bar eta vertical bar < 1.0. Significant reduction in systematic uncertainty of the measurement due to nonflow effects has been achieved by correlating particles at midrapidity, vertical bar eta vertical bar < 1.0, with those at forward rapidity, 2.5 < vertical bar eta vertical bar < 4.0. We also present azimuthal correlations in p + p collisions at root s = 200 GeV to help in estimating nonflow effects. To study the system-size dependence of elliptic flow, we present a detailed comparison with previously published results from Au + Au collisions at root s(NN) = 200 GeV. We observe that v(2)(p(T)) of strange hadrons has similar scaling properties as were first observed in Au + Au collisions, that is, (i) at low transverse momenta, p(T) < 2 GeV/c, v(2) scales with transverse kinetic energy, m(T) - m, and (ii) at intermediate p(T), 2 < p(T) < 4 GeV/c, it scales with the number of constituent quarks, n(q.) We have found that ideal hydrodynamic calculations fail to reproduce the centrality dependence of v(2)(p(T)) for K(S)(0) and Lambda. Eccentricity scaled v(2) values, v(2)/epsilon, are larger in more central collisions, suggesting stronger collective flow develops in more central collisions. The comparison with Au + Au collisions, which go further in density, shows that v(2)/epsilon depends on the system size, that is, the number of participants N(part). This indicates that the ideal hydrodynamic limit is not reached in Cu + Cu collisions, presumably because the assumption of thermalization is not attained.
Published: 2010

37. Observation ofπ+π−π+π−photoproduction in ultraperipheral heavy-ion collisions atsNN=200GeV at the STAR detector

Author: B. I. Abelev, M. M. Aggarwal, Z. Ahammed, A. V. Alakhverdyants, B. D. Anderson, D. Arkhipkin, G. S. Averichev, J. Balewski, L. S. Barnby, S. Baumgart, D. R. Beavis, R. Bellwied, F. Benedosso, M. J. Betancourt, R. R. Betts, A. Bhasin, A. K. Bhati, H. Bichsel, J. Bielcik, J. Bielcikova, B. Biritz, L. C. Bland, B. E. Bonner, J. Bouchet, E. Braidot, A. V. Brandin, A. Bridgeman, E. Bruna, S. Bueltmann, I. Bunzarov, T. P. Burton, X. Z. Cai, H. Caines, M. Calderón de la Barca Sánchez, O. Catu, D. Cebra, R. Cendejas, M. C. Cervantes, Z. Chajecki, P. Chaloupka, S. Chattopadhyay, H. F. Chen, J. H. Chen, J. Y. Chen, J. Cheng, M. Cherney, A. Chikanian, K. E. Choi, W. Christie, P. Chung, S. U. Chung, R. F. Clarke, M. J. M. Codrington, R. Corliss, J. G. Cramer, H. J. Crawford, D. Das, S. Dash, A. Davila Leyva, L. C. De Silva, R. R. Debbe, T. G. Dedovich, M. DePhillips, A. A. Derevschikov, R. Derradi de Souza, L. Didenko, P. Djawotho, S. M. Dogra, X. Dong, J. L. Drachenberg, J. E. Draper, J. C. Dunlop, M. R. Dutta Mazumdar, L. G. Efimov, E. Elhalhuli, M. Elnimr, J. Engelage, G. Eppley, B. Erazmus, M. Estienne, L. Eun, O. Evdokimov, P. Fachini, R. Fatemi, J. Fedorisin, R. G. Fersch, P. Filip, E. Finch, V. Fine, Y. Fisyak, C. A. Gagliardi, D. R. Gangadharan, M. S. Ganti, E. J. Garcia-Solis, A. Geromitsos, F. Geurts, V. Ghazikhanian, P. Ghosh, Y. N. Gorbunov, A. Gordon, O. Grebenyuk, D. Grosnick, B. Grube, S. M. Guertin, A. Gupta, N. Gupta, W. Guryn, B. Haag, T. J. Hallman, A. Hamed, L. -X. Han, J. W. Harris, J. P. Hays-Wehle, M. Heinz, S. Heppelmann, A. Hirsch, E. Hjort, A. M. Hoffman, G. W. Hoffmann, D. J. Hofman, R. S. Hollis, H. Z. Huang, T. J. Humanic, L. Huo, G. Igo, A. Iordanova, P. Jacobs, W. W. Jacobs, P. Jakl, C. Jena, F. Jin, C. L. Jones, P. G. Jones, J. Joseph, E. G. Judd, S. Kabana, K. Kajimoto, K. Kang, J. Kapitan, K. Kauder, D. Keane, A. Kechechyan, D. Kettler, D. P. Kikola, J. Kiryluk, A. Kisiel, S. R. Klein, A. G. Knospe, A. Kocoloski, D. D. Koetke, T. Kollegger, J. Konzer, M. Kopytine, I. Koralt, W. Korsch, L. Kotchenda, V. Kouchpil, P. Kravtsov, K. Krueger, M. Krus, L. Kumar, P. Kurnadi, M. A. C. Lamont, J. M. Landgraf, S. LaPointe, J. Lauret, A. Lebedev, R. Lednicky, C. -H. Lee, J. H. Lee, W. Leight, M. J. LeVine, C. Li, L. Li, N. Li, W. Li, X. Li, Y. Li, Z. Li, G. Lin, S. J. Lindenbaum, M. A. Lisa, F. Liu, H. Liu, J. Liu, T. Ljubicic, W. J. Llope, R. S. Longacre, W. A. Love, Y. Lu, G. L. Ma, Y. G. Ma, D. P. Mahapatra, R. Majka, O. I. Mall, L. K. Mangotra, R. Manweiler, S. Margetis, C. Markert, H. Masui, H. S. Matis, Yu. A. Matulenko, D. McDonald, T. S. McShane, A. Meschanin, R. Milner, N. G. Minaev, S. Mioduszewski, A. Mischke, M. K. Mitrovski, B. Mohanty, M. M. Mondal, D. A. Morozov, M. G. Munhoz, B. K. Nandi, C. Nattrass, T. K. Nayak, J. M. Nelson, P. K. Netrakanti, M. J. Ng, L. V. Nogach, S. B. Nurushev, G. Odyniec, A. Ogawa, H. Okada, V. Okorokov, D. Olson, M. Pachr, B. S. Page, S. K. Pal, Y. Pandit, Y. Panebratsev, T. Pawlak, T. Peitzmann, V. Perevoztchikov, C. Perkins, W. Peryt, S. C. Phatak, P. Pile, M. Planinic, M. A. Ploskon, J. Pluta, D. Plyku, N. Poljak, A. M. Poskanzer, B. V. K. S. Potukuchi, C. B. Powell, D. Prindle, C. Pruneau, N. K. Pruthi, P. R. Pujahari, J. Putschke, R. Raniwala, S. Raniwala, R. L. Ray, R. Redwine, R. Reed, J. M. Rehberg, H. G. Ritter, J. B. Roberts, O. V. Rogachevskiy, J. L. Romero, A. Rose, C. Roy, L. Ruan, M. J. Russcher, R. Sahoo, S. Sakai, I. Sakrejda, T. Sakuma, S. Salur, J. Sandweiss, E. Sangaline, J. Schambach, R. P. Scharenberg, N. Schmitz, T. R. Schuster, J. Seele, J. Seger, I. Selyuzhenkov, P. Seyboth, E. Shahaliev, M. Shao, M. Sharma, S. S. Shi, E. P. Sichtermann, F. Simon, R. N. Singaraju, M. J. Skoby, N. Smirnov, P. Sorensen, J. Sowinski, H. M. Spinka, B. Srivastava, T. D. S. Stanislaus, D. Staszak, J. R. Stevens, R. Stock, M. Strikhanov, B. Stringfellow, A. A. P. Suaide, M. C. Suarez, N. L. Subba, M. Sumbera, X. M. Sun, Y. Sun, Z. Sun, B. Surrow, T. J. M. Symons, A. Szanto de Toledo, J. Takahashi, A. H. Tang, Z. Tang, L. H. Tarini, T. Tarnowsky, D. Thein, J. H. Thomas, J. Tian, A. R. Timmins, S. Timoshenko, D. Tlusty, M. Tokarev, T. A. Trainor, V. N. Tram, S. Trentalange, R. E. Tribble, O. D. Tsai, J. Ulery, T. Ullrich, D. G. Underwood, G. Van Buren, G. van Nieuwenhuizen, J. A. Vanfossen, R. Varma, G. M. S. Vasconcelos, A. N. Vasiliev, F. Videbaek, Y. P. Viyogi, S. Vokal, S. A. Voloshin, M. Wada, M. Walker, F. Wang, G. Wang, H. Wang, J. S. Wang, Q. Wang, X. Wang, X. L. Wang, Y. Wang, G. Webb, J. C. Webb, G. D. Westfall, C. Whitten, H. Wieman, E. Wingfield, S. W. Wissink, R. Witt, Y. Wu, W. Xie, N. Xu, Q. H. Xu, W. Xu, Y. Xu, Z. Xu, L. Xue, Y. Yang, P. Yepes, K. Yip, I. -K. Yoo, Q. Yue, M. Zawisza, H. Zbroszczyk, W. Zhan, S. Zhang, W. M. Zhang, X. P. Zhang, Y. Zhang, Z. P. Zhang, J. Zhao, C. Zhong, J. Zhou, W. Zhou, X. Zhu, Y. H. Zhu, R. Zoulkarneev, and Y. Zoulkarneeva
Subjects: Nuclear reaction, Physics, Nuclear and High Energy Physics, Meson, 010308 nuclear & particles physics, Branching fraction, Hadron, Elementary particle, 01 natural sciences, Pion, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, 0103 physical sciences, Production (computer science), Atomic physics, 010306 general physics, Dimensionless quantity
Abstract: We present a measurement of pi{sup +}pi{sup -}pi{sup +}pi{sup -} photonuclear production in ultraperipheral Au-Au collisions at sq root(s{sub N{sub N}})=200 GeV from the STAR experiment. The pi{sup +}pi{sup -}pi{sup +}pi{sup -} final states are observed at low transverse momentum and are accompanied by mutual nuclear excitation of the beam particles. The strong enhancement of the production cross section at low transverse momentum is consistent with coherent photoproduction. The pi{sup +}pi{sup -}pi{sup +}pi{sup -} invariant mass spectrum of the coherent events exhibits a broad peak around 1540+-40 MeV/c{sup 2} with a width of 570+-60 MeV/c{sup 2}, in agreement with the photoproduction data for the rho{sup 0}(1700). We do not observe a corresponding peak in the pi{sup +}pi{sup -} final state and measure an upper limit for the ratio of the branching fractions of the rho{sup 0}(1700) to pi{sup +}pi{sup -} and pi{sup +}pi{sup -}pi{sup +}pi{sup -} of 2.5% at 90% confidence level. The ratio of rho{sup 0}(1700) and rho{sup 0}(770) coherent production cross sections is measured to be 13.4+-0.8{sub stat.}+-4.4{sub syst.}%.
Published: 2010

38. Observation of an Antimatter Hypernucleus

Author: G. Eppley, F. Liu, J. H. Thomas, Xu Cai, Thorsten Sven Kollegger, J. Pluta, R. D. Majka, D. Kettler, J. Sowinski, W. Li, J. Y. Chen, S. Margetis, R. F. Clarke, J. Schambach, G. S. Averichev, L. H. Tarini, S. Heppelmann, Anju Bhasin, O. Catu, L. Koroleva, Yingcai Zhu, R. P. Redwine, A. Kocoloski, S. Q. Zhang, A. Lebedev, S. Dash, R. E. Tribble, A. K. Bhati, J. B. Zhang, D. D. Koetke, D. Keane, B. E. Bonner, Ross Milner, O. D. Tsai, Nikolai Smirnov, Gerald W Hoffmann, M. Elnimr, M. C. Cervantes, Xiang Sun, R. Stock, Xiaoping Zhang, O. I. Mal, L. K. Yoo, B. Grube, Sevil Salur, Y. Wang, K. Kajimoto, H. Bichsel, G. Odyniec, L. Li, J. Seele, M. Heinz, Lee Stuart Barnby, C-H. Lee, T. K. Nayak, Lokesh Kumar, M. Zawisza, L. Kotchenda, Sergey Voloshin, Christine Nattrass, J. W. Harris, Y. Zoulkarneeva, P. Yepes, A. Davila Leyva, J. L. Drachenberg, W. Guryn, A. H. Tang, W. M. Zhang, Andrey Vasiliev, Nu Xu, L. C. Bland, I. Bunzarov, Q. Wang, Y. Panebratsev, D. Grosnick, V. Kouchpil, Yi Zhang, Rolf K. Reed, E. Wingfield, B. Morozov, Janet Elizabeth Seger, A. M. Hoffman, T. R. Schuster, H. Z. Huang, S. Vokal, L. Sakrejda, Z. Xu, G. Lin, O. G. Grebenyuk, J. Fedorisin, Olga Evdokimov, Hao Qiu, R. S. Longacre, V. Ghazikhanian, G. Van Buren, M. M. Mondai, B. D. Anderson, L-X. Han, J. Kiryluk, R. R. Debbe, Jing Zhou, A. G. Knospe, J. G. Cramer, N. K. Pruthi, D. A. Morozov, P. Sorensen, D. Thein, M. R. Dutta Mazumdar, B. Erazmus, Jay Roberts, G. D. Westfall, Peter Graham Jones, W. Zhou, C. L. Jones, O. V. Rogachevskiy, P. R. Pujahari, C. B. Powell, T. P. Burton, Neeraj Gupta, M. C. Suarez, D. Cebra, S. Trentalange, D. N. Svirida, J. L. Romero, M. Kopytine, M. Tokarev, Jie Zhao, K. Yip, J. Kapitan, A. R. Timmins, Marcelo Gameiro Munhoz, D. J. Prindle, J. S. Wang, Zhibing Li, K. Kang, J. E. Draper, M. J. Skoby, Frank Jm Geurts, J. M. Nelson, S. M. Dogra, S. S. Shi, B. V.K.S. Potukuchi, Y. Fisyak, Debasish Das, Raghunath Sahoo, Yu-Gang Ma, E. Elhalhuli, M. A.C. Lamont, Yan Li, I. G. Alekseev, Donika Plyku, S. M. Guertin, M. A. Lisa, Alexandre Alarcon Do Passo Suaide, T. Pawlak, L. Didenko, Jie Liu, W. A. Love, A. Bridgeman, T. S. McShane, Jing-Han Chen, W. Peryt, Jifa Tian, Hanna Paulina Zbroszczyk, A. V. Alakhverdyants, E. Finch, L. Xue, Russell Richard Betts, D. R. Beavis, D. P. Mahapatra, R. S. Hollis, S. Baumgart, T. D. S. Stanislaus, G. Wang, G. Igo, J. Bouchet, J. Ulery, D. G. Underwood, P. Seyboth, E. J. Garcia-Solis, Lijuan Ruan, R. Fatemi, Michael Joseph Betancourt, J. Bieldk, Matthew Walker, K. Kauder, R. Witt, Xiaofeng Luo, D. R. Gangadharan, E. G. Judd, A. Lordanova, H. H. Wieman, H. G. Ritter, S. Mioduszewski, M. Shao, B. I. Abelev, Guo-Liang Ma, W. J. Llope, T. J. M. Symons, Y. J. Sun, L. G. Efimov, M. DePhillips, L. C. De Silva, J. Engelage, B. Haag, A. de Toledo, Jianping Cheng, Donald M. McDonald, R. Bellwied, L. K. Mangotra, R. Manweiler, Hongfang Liu, K. Krueger, S. Kabana, A. Geromitsos, Y. P. Viyogi, Premomoy Ghosh, Z. Chajecki, P. Fachini, B. K. Srivastava, J. M. Landgraf, Andrew Rose, B. Huang, Bernd Surrow, Michal Sumbera, E. Hjort, M. Strikhanov, Hank Crawford, Zebo Tang, A. S. Hirsch, M. J. M. Codrington, J. Konzer, A. Gupta, A. M. Poskanzer, Qian Yue, H. Caines, Haiyan Wang, C. Marken, Ki-Seok Choi, J. A. Vanfossen, J. C. Webb, J. C. Dunlop, Thomas Humanic, J. Sandweiss, R. Varma, James Prewitt Hays-Wehle, Yu A. Matulenko, B. S. Page, A. Kechechyan, M. Esdenne, Pawan Kumar Netrakanti, Q. H. Xu, Zubayer Ahammed, M. J. LeVine, S. W. Wissink, P. Kravtsov, D. P. Kikola, R. De Derradi Souza, B. Stringfellow, William Axel Leight, Hal Spinka, Thomas Peitzmann, M. Krus, S. R. Klein, N. L. Subba, R. Cendejas, M. Calderon, Nikola Poljak, Z. J. Sun, C. Perkins, Jorn Henning Putschke, A. V. Brandin, Xianglei Zhu, L. Huo, A. P. Meschanin, C. A. Gagliardi, P. Chung, Bedangadas Mohanty, M. Pachr, A. A. Derevschikov, H. Okada, R. G. Fersch, Wei Xie, David Jonathan Hofman, H. Masui, J. Joseph, M. Wada, Madan M. Aggarwal, Fuqiang Wang, G. M.S. Vasconcelos, Y. Pandit, M. Cherney, N. Schmitz, Peter Martin Jacobs, F. Videbæk, E. Shahaliev, J. Takahashi, Andre Mischke, Yong Xu, G. Webb, S. B. Nurushev, M. S. Ganti, W. L. Zhan, W. Christie, Chitrasen Jena, Frank Simon, Y. Yang, Y. P. Lu, V. Perevoztchikov, S. LaPointe, N. Li, A. Gordon, L. Selyuzhenkov, Ermes Braidot, Adam Ryszard Kisiel, S. Bueltmann, Subhasis Chattopadhyay, D. Tlusty, Mirko Planinic, Elena Bruna, Y. N. Gorbunov, Sergey Timoshenko, W. Xu, Wolfgang Korsch, X. Li, C. A. Whitten, Feng Jin, R. Corliss, A. Ogawa, S. J. Lindenbaum, Thomas A. Trainor, C-Q. Li, R. P. Scharenberg, Shoko Sakai, H. S. Matis, W. W. Jacobs, J. Lauret, M. Sharma, R. Lednicky, P. Djawotho, N. G. Minaev, P. Filip, P. Pile, Petr Jákl, P. Kurnadi, Zhenyu Zhang, M. Ploskon, M. K. Mttrovski, T. G. Dedovich, T. Sakuma, S. C. Phatak, V. Fine, D. Oison, Yuanfang Wu, Basanta Kumar Nandi, T. Tarnowsky, B. Biritz, V. A. Okorokov, L. V. Nogach, M. J. Ng, G. Van Nieuwenhuizen, Jongmin Lee, R. L. Ray, D. Staszak, T. Ljubicic, J. Bieldkova, Sudhir Raniwala, E. P. Sichtermann, J. Balewski, Rashmi Raniwala, Claude Andre Pruneau, T. Ullrich, R. Zoulkarneev, H. S. Xu, L. Eun, X. L. Wang, C. Zhong, M. van Leeuwen, X. Dong, S. K. Pal, Justin Stevens, A. Chikanian, V. N. Tram, E. Sangaline, D. Arkhipkin, A. Hamed, C. Roy, L. Koralt, P. Chaloupka, H. F. Chen, and Rama Narayana Singaraju
Subjects: Quark, Particle physics, Strange quark, Nuclear Theory, FOS: Physical sciences, Antineutron, Nuclear physics, Collisions, Nuclear Experiment (nucl-ex), Light Hypernuclei, Nuclear Experiment, Physics, Multidisciplinary, Hyperon, Search, Strangeness, Hypernucleus, Antiproton, Antimatter, Quark-Gluon-Plasma, High Energy Physics::Experiment, Hypertriton, Lifetime, antimatter, hypernucleus, STAR
Abstract: Nuclear collisions recreate conditions in the universe microseconds after the Big Bang. Only a very small fraction of the emitted fragments are light nuclei, but these states are of fundamental interest. We report the observation of antihypertritons - composed of an antiproton, antineutron, and antilambda hyperon - produced by colliding gold nuclei at high energy. Our analysis yields 70 +- 17 antihypertritons and 157 +- 30 hypertritons. The measured yields of hypertriton (antihypertriton) and helium3 (antihelium3) are similar, suggesting an equilibrium in coordinate and momentum space populations of up, down, and strange quarks and antiquarks, unlike the pattern observed at lower collision energies. The production and properties of antinuclei, and nuclei containing strange quarks, have implications spanning nuclear/particle physics, astrophysics, and cosmology., 20 pages, 5 figures
Published: 2010

39. Identified particle production, azimuthal anisotropy, and interferometry measurements inAu+Aucollisions atsNN=9.2GeV

Author: G. Lin, P. Kurnadi, P. Djawotho, M. Heinz, Lee Stuart Barnby, J. E. Draper, M. J. Skoby, Frank Jm Geurts, E. Elhalhuli, Jifa Tian, J. Engelage, F. Benedosso, A. G. Knospe, Jaroslav Bielcik, T. G. Dedovich, A. Geromitsos, William Jacobs, Premomoy Ghosh, J. M. Landgraf, C-Q. Li, M. R. Dutta Mazumdar, T. Sakuma, S. C. Phatak, V. Fine, Russell Richard Betts, M. Strikhanov, Y. Xu, O. V. Rogachevskiy, R. P. Scharenberg, Christina Markert, M. K. Mitrovski, Shoko Sakai, H. S. Matis, H. Masui, Zhibing Li, Jake Y. Chen, E. Hjort, Y. F. Wu, D. G. Underwood, A. Ridiger, Christine Nattrass, B. Haag, J. Konzer, L. Didenko, J. C. Dunlop, K. Yip, K. Kang, K. Kajimoto, Saskia Mioduszewski, Mikhail Tokarev, W. A. Love, Zebo Tang, H. Caines, Ki-Seok Choi, M. Zawisza, H. M. Spinka, L. Xue, J. Lauret, Zubayer Ahammed, J. S. Wang, R. R. Debbe, Y. Wang, Thomas Humanic, E. P. Sichtermann, Y. Zoulkarneeva, C. Zhong, T. S. McShane, R. Lednicky, M. J. LeVine, J. M. Joseph, J. H. Thomas, G. Odyniec, J. Sandweiss, Z. Chajecki, D. D. Koetke, D. Kettler, J. Balewski, Madan M. Aggarwal, N. Xu, S. Timoshenko, Fuqiang Wang, P. Filip, L. Kotchenda, Q. Wang, M. J. Russcher, G. S. Averichev, J. Ulery, Rashmi Raniwala, I. Koralt, T. R. Schuster, C. Perkins, Ilya Selyuzhenkov, J. M. Rehberg, R. S. Longacre, H. G. Ritter, H. Z. Huang, L. H. Tarini, Sergei A. Voloshin, J. C. Webb, T. Peitzmann, J. L. Drachenberg, S. Zhang, L. V. Nogach, M. J. Ng, V. I. Kravtsov, P. Pile, G. D. Westfall, Claude Andre Pruneau, Sadhana Dash, O. Barannikova, R. Bellwied, I. Bnzarov, T. J. Hallman, E. G. Judd, G. J. van Nieuwenhuizen, T. J. M. Symons, Anthony Robert Timmins, C. L. Jones, S. Baumgart, Jing Zhou, Matthew Walker, Mirko Planinic, Jay Roberts, D. Thein, Adam Ryszard Kisiel, I. Sakrejda, Marcelo Gameiro Munhoz, D. J. Prindle, D. Tlusty, W. L. Zhan, S. Vokal, Y. Fisyak, A. Gupta, Petr Jákl, T. Ullrich, L. C. De Silva, Frank Simon, D. R. Gangadharan, Donika Plyku, P. Chung, S. M. Guertin, William Axel Leight, X. Zhu, S. R. Klein, T. Tarnowsky, N. L. Subba, M. A. Lisa, Debasish Das, Raghunath Sahoo, M. A.C. Lamont, Mateusz Andrzej Ploskon, R. Witt, R. Zoulkarneev, Vitaly Okorokov, R. Fatemi, Michael Joseph Betancourt, D. P. Mahapatra, M. Kopytine, D. L. Olson, L. C. Bland, Bernd Surrow, J. Kiryluk, J. H. Chen, Yifu Sun, W. Zhou, Y. P. Viyogi, Y. Yang, V. Yu Khodyrev, S. LaPointe, N. Li, Wei Xie, R. S. Hollis, Subrata Pal, Donald M. McDonald, L. Eun, A. A. Derevschikov, G. Igo, B. K. Srivastava, D. A. Morozov, G. M.S. Vasconcelos, X. L. Wang, K. Krueger, M. C. Suarez, C. A. Whitten, Feng Jin, Pawan Kumar Netrakanti, J. A. Vanfossen, J. Bouchet, A. Szanto de Toledo, B. Erazmus, J. Kapitan, L. Ruan, G. Wang, Qian Yue, A. V. Brandin, H. Okada, C. A. Gagliardi, K. Kauder, W. Xu, S. Margetis, R. Corliss, M. Pachr, T. D. S. Stanislaus, X. Dong, Y. Pandit, George Stephans, T. Pawlak, Y. Zhao, R. Varma, A. Rose, James Prewitt Hays-Wehle, Yu A. Matulenko, B. S. Page, Neeraj Gupta, D. Cebra, M. Estienne, A. V. Alakhverdyants, X. Lin, Z. J. Sun, H. H. Wieman, S. J. Lindenbaum, N. Schmitz, B. Grube, Q. H. Xu, Jongmin Lee, D. P. Kikola, L. K. Mangotra, R. L. Ray, P. Seyboth, B. Stringfellow, D. Staszak, R. N. Singaraju, E. Shahaliev, L. Huo, A. P. Meschanin, R. Manweiler, W. Guryn, R. Derradi de Souza, B. I. Abelev, T. Ljubicic, O. G. Grebenyuk, Jianping Cheng, Sudhir Raniwala, B. D. Anderson, J. Fedorisin, V. Ghazikhanian, J. G. Cramer, M. J. M. Codrington, M. Cherney, A. Kechechyan, Andre Mischke, Lokesh Kumar, M. Krus, R. Cendejas, Jana Bielcikova, Prabhat Ranjan Pujahari, J. L. Romero, M. Sharma, N. K. Pruthi, N. G. Minaev, E. Finch, G. Eppley, Xu Cai, J. Pluta, Jie Liu, Y. H. Zhu, Gerald W Hoffmann, J. Seele, Hanna Paulina Zbroszczyk, D. R. Beavis, J. W. Harris, R. Reed, P. Yepes, A. H. Tang, W. M. Zhang, Andrey Vasiliev, O. I. Mall, L-X. Han, M. Calderon De La Barca Sanchez, O. Catu, A. Kocoloski, P. G. Jones, Yu-Gang Ma, A. Hirsch, W. J. Llope, Janet Elizabeth Seger, A. M. Hoffman, Y. Li, T. Kollegger, F. Liu, Edmundo Javier Garcia-Solis, Ascelin Gordon, R. D. Majka, J. Sowinski, R. F. Clarke, J. Schambach, L. G. Efimov, Anju Bhasin, R. P. Redwine, Haiyan Wang, A. Lebedev, X. M. Sun, P. Sorensen, M. Shao, G. Van Buren, S. S. Shi, T. W. Ludlam, J. M. Nelson, W. Peryt, P. Fachini, Peter Martin Jacobs, D. J. Hofman, J. Takahashi, S. B. Nurushev, Bedangadas Mohanty, R. G. Fersch, M. Wada, Robert E. Tribble, I. K. Yoo, M. DePhillips, Michal Sumbera, A. A. P. Suaide, Hank Crawford, S. W. Wissink, Y. Zhang, Nikola Poljak, Y. N. Gorbunov, B. V. K. S. Potukuchi, Wolfgang Korsch, A. Bridgeman, J. Putschke, A. Ogawa, H. F. Chen, Thomas A. Trainor, Basanta Kumar Nandi, B. Biritz, A. M. Poskanzer, T. P. Burton, C. Roy, P. Chaloupka, B. E. Bonner, O. D. Tsai, S. Kabana, S. Trentalange, M. Elnimr, M. C. Cervantes, H. Liu, V. N. Tram, R. Milner, D. Arkhipkin, A. Hamed, Sevil Salur, E. Braidot, A. Iordanova, A. K. Bhati, D. Keane, R. Stock, Xiaoping Zhang, C-H. Lee, T. K. Nayak, Y. Panebratsev, D. Grosnick, V. Kouchpil, Z. Z. Xu, Samuel Heppelmann, Nikita Smirnov, Guo-Liang Ma, A. Chikanian, Z. P. Zhang, P. Kravtsov, F. Videbæk, G. Webb, M. S. Ganti, H. Bichsel, W. Christie, Chitrasen Jena, Y. P. Lu, V. Perevoztchikov, Sunil Dogra, S. Bueltmann, Subhasis Chattopadhyay, and Elena Bruna
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Time projection chamber, Meson, 010308 nuclear & particles physics, Nuclear Theory, Elliptic flow, Hadron, Elementary particle, 01 natural sciences, 7. Clean energy, Nuclear physics, 0103 physical sciences, Quark–gluon plasma, High Energy Physics::Experiment, Rapidity, Nuclear Experiment, 010306 general physics, STAR detector
Abstract: We present the first measurements of identified hadron production, azimuthal anisotropy, and pion interferometry from Au + Au collisions below the nominal injection energy at the BNL Relativistic Heavy-Ion Collider (RHIC) facility. The data were collected using the large acceptance solenoidal tracker at RHIC (STAR) detector at root s(NN) = 9.2 GeV from a test run of the collider in the year 2008. Midrapidity results on multiplicity density dN/dy in rapidity y, average transverse momentum , particle ratios, elliptic flow, and Hanbury-Brown-Twiss (HBT) radii are consistent with the corresponding results at similar root s(NN) from fixed-target experiments. Directed flow measurements are presented for both midrapidity and forward-rapidity regions. Furthermore the collision centrality dependence of identified particle dN/dy, , and particle ratios are discussed. These results also demonstrate that the capabilities of the STAR detector, although optimized for root s(NN) = 200 GeV, are suitable for the proposed QCD critical-point search and exploration of the QCD phase diagram at RHIC.
Published: 2010

40. Higher Moments of Net-proton Multiplicity Distributions at RHIC

Author: M. M. Aggarwal, Z. Ahammed, A. V. Alakhverdyants, I. Alekseev, J. Alford, B. D. Anderson, D. Arkhipkin, G. S. Averichev, J. Balewski, L. S. Barnby, S. Baumgart, D. R. Beavis, R. Bellwied, M. J. Betancourt, R. R. Betts, A. Bhasin, A. K. Bhati, H. Bichsel, J. Bielcik, J. Bielcikova, B. Biritz, L. C. Bland, B. E. Bonner, J. Bouchet, E. Braidot, A. V. Brandin, A. Bridgeman, E. Bruna, S. Bueltmann, I. Bunzarov, T. P. Burton, X. Z. Cai, H. Caines, M. Calderón de la Barca Sánchez, O. Catu, D. Cebra, R. Cendejas, M. C. Cervantes, Z. Chajecki, P. Chaloupka, S. Chattopadhyay, H. F. Chen, J. H. Chen, J. Y. Chen, J. Cheng, M. Cherney, A. Chikanian, K. E. Choi, W. Christie, P. Chung, R. F. Clarke, M. J. M. Codrington, R. Corliss, J. G. Cramer, H. J. Crawford, D. Das, S. Dash, A. Davila Leyva, L. C. De Silva, R. R. Debbe, T. G. Dedovich, A. A. Derevschikov, R. Derradi de Souza, L. Didenko, P. Djawotho, S. M. Dogra, X. Dong, J. L. Drachenberg, J. E. Draper, J. C. Dunlop, M. R. Dutta Mazumdar, L. G. Efimov, E. Elhalhuli, M. Elnimr, J. Engelage, G. Eppley, B. Erazmus, M. Estienne, L. Eun, O. Evdokimov, P. Fachini, R. Fatemi, J. Fedorisin, R. G. Fersch, P. Filip, E. Finch, V. Fine, Y. Fisyak, C. A. Gagliardi, D. R. Gangadharan, M. S. Ganti, E. J. Garcia-Solis, A. Geromitsos, F. Geurts, V. Ghazikhanian, P. Ghosh, Y. N. Gorbunov, A. Gordon, O. Grebenyuk, D. Grosnick, S. M. Guertin, A. Gupta, N. Gupta, W. Guryn, B. Haag, A. Hamed, L-X. Han, J. W. Harris, J. P. Hays-Wehle, M. Heinz, S. Heppelmann, A. Hirsch, E. Hjort, A. M. Hoffman, G. W. Hoffmann, D. J. Hofman, B. Huang, H. Z. Huang, T. J. Humanic, L. Huo, G. Igo, P. Jacobs, W. W. Jacobs, C. Jena, F. Jin, C. L. Jones, P. G. Jones, J. Joseph, E. G. Judd, S. Kabana, K. Kajimoto, K. Kang, J. Kapitan, K. Kauder, D. Keane, A. Kechechyan, D. Kettler, D. P. Kikola, J. Kiryluk, A. Kisiel, S. R. Klein, A. G. Knospe, A. Kocoloski, D. D. Koetke, T. Kollegger, J. Konzer, I. Koralt, L. Koroleva, W. Korsch, L. Kotchenda, V. Kouchpil, P. Kravtsov, K. Krueger, M. Krus, L. Kumar, P. Kurnadi, M. A. C. Lamont, J. M. Landgraf, S. LaPointe, J. Lauret, A. Lebedev, R. Lednicky, C-H. Lee, J. H. Lee, W. Leight, M. J. LeVine, C. Li, L. Li, N. Li, W. Li, X. Li, Y. Li, Z. M. Li, G. Lin, S. J. Lindenbaum, M. A. Lisa, F. Liu, H. Liu, J. Liu, T. Ljubicic, W. J. Llope, R. S. Longacre, W. A. Love, Y. Lu, E. V. Lukashov, X. Luo, G. L. Ma, Y. G. Ma, D. P. Mahapatra, R. Majka, O. I. Mall, L. K. Mangotra, R. Manweiler, S. Margetis, C. Markert, H. Masui, H. S. Matis, Yu. A. Matulenko, D. McDonald, T. S. McShane, A. Meschanin, R. Milner, N. G. Minaev, S. Mioduszewski, A. Mischke, M. K. Mitrovski, B. Mohanty, M. M. Mondal, B. Morozov, D. A. Morozov, M. G. Munhoz, B. K. Nandi, C. Nattrass, T. K. Nayak, J. M. Nelson, P. K. Netrakanti, M. J. Ng, L. V. Nogach, S. B. Nurushev, G. Odyniec, A. Ogawa, V. Okorokov, E. W. Oldag, D. Olson, M. Pachr, B. S. Page, S. K. Pal, Y. Pandit, Y. Panebratsev, T. Pawlak, T. Peitzmann, V. Perevoztchikov, C. Perkins, W. Peryt, S. C. Phatak, P. Pile, M. Planinic, M. A. Ploskon, J. Pluta, D. Plyku, N. Poljak, A. M. Poskanzer, B. V. K. S. Potukuchi, C. B. Powell, D. Prindle, C. Pruneau, N. K. Pruthi, P. R. Pujahari, J. Putschke, H. Qiu, R. Raniwala, S. Raniwala, R. L. Ray, R. Redwine, R. Reed, H. G. Ritter, J. B. Roberts, O. V. Rogachevskiy, J. L. Romero, A. Rose, C. Roy, L. Ruan, R. Sahoo, S. Sakai, I. Sakrejda, T. Sakuma, S. Salur, J. Sandweiss, E. Sangaline, J. Schambach, R. P. Scharenberg, N. Schmitz, T. R. Schuster, J. Seele, J. Seger, I. Selyuzhenkov, P. Seyboth, E. Shahaliev, M. Shao, M. Sharma, S. S. Shi, E. P. Sichtermann, F. Simon, R. N. Singaraju, M. J. Skoby, N. Smirnov, P. Sorensen, J. Sowinski, H. M. Spinka, B. Srivastava, T. D. S. Stanislaus, D. Staszak, J. R. Stevens, R. Stock, M. Strikhanov, B. Stringfellow, A. A. P. Suaide, M. C. Suarez, N. L. Subba, M. Sumbera, X. M. Sun, Y. Sun, Z. Sun, B. Surrow, D. N. Svirida, T. J. M. Symons, A. Szanto de Toledo, J. Takahashi, A. H. Tang, Z. Tang, L. H. Tarini, T. Tarnowsky, D. Thein, J. H. Thomas, J. Tian, A. R. Timmins, S. Timoshenko, D. Tlusty, M. Tokarev, V. N. Tram, S. Trentalange, R. E. Tribble, O. D. Tsai, J. Ulery, T. Ullrich, D. G. Underwood, G. Van Buren, M. van Leeuwen, G. van Nieuwenhuizen, J. A. Vanfossen, R. Varma, G. M. S. Vasconcelos, A. N. Vasiliev, F. Videbaek, Y. P. Viyogi, S. Vokal, S. A. Voloshin, M. Wada, M. Walker, F. Wang, G. Wang, H. Wang, J. S. Wang, Q. Wang, X. L. Wang, Y. Wang, G. Webb, J. C. Webb, G. D. Westfall, C. Whitten, H. Wieman, S. W. Wissink, R. Witt, Y. F. Wu, W. Xie, H. Xu, N. Xu, Q. H. Xu, W. Xu, Y. Xu, Z. Xu, L. Xue, Y. Yang, P. Yepes, K. Yip, I-K. Yoo, Q. Yue, M. Zawisza, H. Zbroszczyk, W. Zhan, J. B. Zhang, S. Zhang, W. M. Zhang, X. P. Zhang, Y. Zhang, Z. P. Zhang, J. Zhao, C. Zhong, J. Zhou, W. Zhou, X. Zhu, Y. H. Zhu, R. Zoulkarneev, Y. Zoulkarneeva, Laboratoire SUBATECH Nantes (SUBATECH), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Nantes (UN)-Mines Nantes (Mines Nantes), and STAR
Subjects: Particle physics, Nuclear Theory, Proton, [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], Lattice field theory, FOS: Physical sciences, General Physics and Astronomy, dependence lattice field theory energy dependence quantum chromodynamics, measured potential, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], scattering gold p, 01 natural sciences, heavy ion, multiplicity, measured anti-p, chemical multiplicity, moment baryon number, susceptibility correlation, long-range impact parameter, critical phenomena STAR Brookhaven RHIC Coll 19.6, 62.4, 200.0 GeV-cms/nucleon, High Energy Physics - Experiment, Nuclear Theory (nucl-th), Nuclear physics, High Energy Physics - Experiment (hep-ex), High Energy Physics - Lattice, High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Nuclear Experiment (nucl-ex), 010306 general physics, Nuclear Experiment, Physics, Quantum chromodynamics, 010308 nuclear & particles physics, [PHYS.HLAT]Physics [physics]/High Energy Physics - Lattice [hep-lat], High Energy Physics - Lattice (hep-lat), Sigma, Multiplicity (mathematics), Lattice QCD, NATURAL SCIENCES. Physics, Baryon, PRIRODNE ZNANOSTI. Fizika, High Energy Physics - Phenomenology, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], Baryon number
Abstract: We report the first measurements of the kurtosis (\kappa), skewness (S) and variance (\sigma^2) of net-proton multiplicity (N_p - N_pbar) distributions at midrapidity for Au+Au collisions at \sqrt(s_NN) = 19.6, 62.4, and 200 GeV corresponding to baryon chemical potentials (\mu_B) between 200 - 20 MeV. Our measurements of the products \kappa \sigma^2 and S \sigma, which can be related to theoretical calculations sensitive to baryon number susceptibilities and long range correlations, are constant as functions of collision centrality. We compare these products with results from lattice QCD and various models without a critical point and study the \sqrt(s_NN) dependence of \kappa \sigma^2. From the measurements at the three beam energies, we find no evidence for a critical point in the QCD phase diagram for \mu_B below 200 MeV., Comment: 6 pages and 4 figures. Version accepted for publication in Physical Review Letters
Published: 2010

41. Center of mass energy and system-size dependence of photon production at forward rapidity at RHIC

Author: G. Van Buren, C-Q. Li, O. Catu, R. P. Scharenberg, Christina Markert, S. S. Shi, A. Kocoloski, J. L. Drachenberg, S. Dash, Shoko Sakai, H. S. Matis, W. Christie, T. W. Ludlam, J. M. Nelson, W. W. Jacobs, A. Feng, Jay Roberts, W. M. Zhang, Andrey Vasiliev, Russell Richard Betts, D. G. Underwood, L. H. Tarini, K. Kajimoto, B. Haag, M. Zawisza, H. M. Spinka, I. Sakrejda, P. Fachini, K. S.F.F. Guimaraes, G. Wang, Yan Li, P. Seyboth, Jing-Han Chen, W. Peryt, E. J. Garcia-Solis, J. W. Harris, J. Lauret, J. X. Zuo, Madan M. Aggarwal, Fuqiang Wang, Janet Elizabeth Seger, A. M. Hoffman, R. Derradi de Souza, B. I. Abelev, M. Shao, T. J. Hallman, J. Cheng, T. J. M. Symons, Jongmin Lee, R. L. Ray, D. Staszak, I. Bnzarov, J. H. Thomas, Zebo Tang, O. I. Mall, N. Xu, P. Filip, Y. Yang, William Axel Leight, Souvik Das, Mateusz Andrzej Ploskon, R. Witt, L. C. De Silva, Sergey Voloshin, Christine Nattrass, S. LaPointe, N. Li, S. Mioduszewski, R. Lednicky, T. Tarnowsky, P. Djawotho, Yong Xu, A. Gordon, Anju Bhasin, R. P. Redwine, S. R. Klein, T. Ljubicic, N. L. Subba, D. L. Olson, V. Yu Khodyrev, M. J. M. Codrington, D. Kettler, B. Grube, G. S. Averichev, Z. Chajecki, M. A.C. Lamont, L. K. Mangotra, Jorn Henning Putschke, P. Pile, Donald M. McDonald, B. K. Srivastava, A. V. Brandin, P. Yepes, W. Guryn, H. Okada, R. Manweiler, Hongfang Liu, A. Lebedev, H. Caines, Sudhir Raniwala, G. D. Westfall, Xiangming Sun, A. Shabetai, Wei Xie, H. Bichsel, G. Odyniec, Y. Zoulkarneeva, A. Chikanian, A. H. Tang, A. A. Derevschikov, A. L. Trattner, Haiyan Wang, Q. H. Xu, S. E. Vigdor, A. M. Poskanzer, Petr Jákl, Boris Hippolyte, W. L. Zhan, O. G. Grebenyuk, A. K. Bhati, D. Keane, C. Perkins, J. Joseph, Christian Claude Kuhn, H. Z. Huang, G. M.S. Vasconcelos, Jana Bielcikova, X. Z. Cai, S. Vokal, Frank Simon, D. Tlusty, A. Kechechyan, Andre Mischke, Mirko Planinic, V. N. Tram, J. Baudot, J. C. Dunlop, J. Fedorisin, Nikolai Smirnov, M. Sarsour, T. Peitzmann, Z. J. Sun, P. Sorensen, X. H. Shi, L. G. Efimov, M. Krus, David Jonathan Hofman, H. Masui, I. Selyuzhenkov, A. G. Knospe, Zubayer Ahammed, M. J. LeVine, P. R. Pujahari, T. P. Burton, R. N. Singaraju, Q. Wang, F. Liu, L. Huo, A. P. Meschanin, Y. Pandit, Peter Graham Jones, M. J. Russcher, R. Cendejas, C-H. Lee, T. K. Nayak, T. S. McShane, J. Kiryluk, Z. Xu, G. Lin, X. L. Wang, D. Thein, Peter Martin Jacobs, Bernd Surrow, Y. N. Gorbunov, C. Zhong, K. Kang, Ermes Braidot, R. D. Majka, J. Sowinski, L. Didenko, J. Takahashi, D. A. Morozov, S. K. Badyal, S. B. Nurushev, Anik Gupta, N. Schmitz, Jing Zhou, B. E. Bonner, M. Kopytine, J. Y. Chen, E. Shahaliev, S. Margetis, R. F. Clarke, J. Schambach, A. Ridiger, M. Tokarev, O. D. Tsai, M. van Leeuwen, X. Dong, S. K. Pal, B. D. Anderson, A. Szanto de Toledo, J. Kapitan, Pawan Kumar Netrakanti, K. Yip, C. A. Whitten, Feng Jin, D. Arkhipkin, B. Erazmus, M. Elnimr, Sergey Timoshenko, Y. Fisyak, A. R. Timmins, S. M. Dogra, A. Hamed, J. S. Wang, Adam Ryszard Kisiel, M. C. Cervantes, R. Corliss, Wolfgang Korsch, C. A. Gagliardi, M. J. Skoby, Frank Jm Geurts, E. Elhalhuli, Neeraj Gupta, D. Cebra, S. Trentalange, M. Estienne, N. K. Pruthi, S. Baumgart, D. D. Koetke, T. D. S. Stanislaus, H. H. Wieman, T. Pawlak, R. S. Longacre, E. P. Sichtermann, J. E. Draper, S. J. Lindenbaum, A. Iordanova, H. J. Crawford, M. Pachr, Marcelo Gameiro Munhoz, D. J. Prindle, E. Hjort, Y. F. Wu, G. Eppley, A. V. Alakhverdyants, J. Balewski, Rashmi Raniwala, J. Engelage, Xiaofeng Zhu, Donika Plyku, R. Fatemi, Michael Joseph Betancourt, Claude Andre Pruneau, R. Millner, Matthew Walker, M. Heinz, M. A. Lisa, Lee Stuart Barnby, Debasish Das, Raghunath Sahoo, Jifa Tian, Xuan Wang, J. Pluta, K. Krueger, Sevil Salur, Y. Wang, A. Ogawa, H. F. Chen, G. Igo, T. Ullrich, Thomas A. Trainor, Jaroslav Bielcik, M. Sharma, J. A. Vanfossen, L. Ruan, J. Bouchet, R. Zoulkarneev, Y. Panebratsev, A. Geromitsos, D. Grosnick, N. G. Minaev, V. Kouchpil, Premomoy Ghosh, J. M. Landgraf, V. Ghazikhanian, S. H. Zhang, L. Eun, Y. J. Sun, K. Kauder, W. He, M. R. Dutta Mazumdar, Basanta Kumar Nandi, Marek Bombara, O. V. Rogachevskiy, M. Cherney, Thomas Michael Cormier, Yi Zhang, R. E. Tribble, Lokesh Kumar, M. Strikhanov, Andrew Rose, Y. Zhao, J. L. Romero, Rolf K. Reed, Gerald W Hoffmann, S. Kabana, Y. P. Viyogi, B. Biritz, V. A. Okorokov, J. Konzer, Mitali Mondal, E. Finch, C. Roy, Ki-Seok Choi, W. A. Love, J. Sandweiss, J. G. Cramer, P. Chaloupka, T. J. Humanic, Qian Yue, R. Varma, Yu A. Matulenko, B. S. Page, D. P. Kikola, B. Stringfellow, B. V.K.S. Potukuchi, Yu-Gang Ma, Xuan Zhang, Jie Liu, I. Koralt, Hanna Paulina Zbroszczyk, L. V. Nogach, M. J. Ng, V. I. Kravtsov, G. Van Nieuwenhuizen, P. Kurnadi, D. R. Beavis, Zhenyu Zhang, M. R. Cosentino, F. Benedosso, T. G. Dedovich, T. Sakuma, S. C. Phatak, V. Fine, L. Kotchenda, S. Hepplemann, W. J. Llope, S. M. Guertin, Alexandre Alarcon Do Passo Suaide, M. DePhillips, D. P. Mahapatra, R. S. Hollis, Michal Sumbera, S. W. Wissink, M. Calderon, Nikola Poljak, Bedangadas Mohanty, M. Wada, M. Bystersky, I. K. Yoo, D. R. Gangadharan, E. G. Judd, L. C. Bland, L. Liu, C. L. Jones, M. C. Suarez, J. Ulery, H. G. Ritter, O. Barannikova, R. Bellwied, L. Gaillard, M. S. Daugherity, Guo-Liang Ma, A. S. Hirsch, J. C. Webb, P. Kravtsov, S. Bueltmann, Elena Bruna, F. Videbæk, G. Webb, Sukalyan Chattopadhyay, M. S. Ganti, Chitrasen Jena, Y. P. Lu, V. Perevoztchikov, Massachusetts Institute of Technology. Department of Physics, Massachusetts Institute of Technology. Laboratory for Nuclear Science, Laboratoire SUBATECH Nantes (SUBATECH), Mines Nantes (Mines Nantes)-Université de Nantes (UN)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Département Recherches Subatomiques (DRS-IPHC), Institut Pluridisciplinaire Hubert Curien (IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), STAR, and Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Nuclear and High Energy Physics, Particle physics, Photon, Particle Production, Meson, Hadron, FOS: Physical sciences, Elementary particle, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, 7. Clean energy, Nuclear physics, heavy ion, scattering, gold, 0103 physical sciences, Rapidity, Limiting Fragmentation, Nuclear Experiment (nucl-ex), 010306 general physics, Nuclear Experiment, Condensate, Physics, Photons, Plus Au Collisions, Nucleus-Nucleus Collisions, Matter, 010308 nuclear & particles physics, Heavy-Ion Collisions, Detector, Forward Rapidity, Collaboration, Charged particle, Multiplicity, Pseudorapidity, Perspective, Quark-Gluon Plasma, High Energy Physics::Experiment, Nucleon
Abstract: We present the multiplicity and pseudorapidity distributions of photons produced in Au+Au and Cu+Cu collisions at \sqrt{s_NN} = 62.4 and 200 GeV. The photons are measured in the region -3.7 < \eta < -2.3 using the photon multiplicity detector in the STAR experiment at RHIC. The number of photons produced per average number of participating nucleon pairs increases with the beam energy and is independent of the collision centrality. For collisions with similar average numbers of participating nucleons the photon multiplicities are observed to be similar for Au+Au and Cu+Cu collisions at a given beam energy. The ratios of the number of charged particles to photons in the measured pseudorapidity range are found to be 1.4 +/- 0.1 and 1.2 +/- 0.1 for \sqrt{s_NN} = 62.4 GeV and 200 GeV, respectively. The energy dependence of this ratio could reflect varying contributions from baryons to charged particles, while mesons are the dominant contributors to photon production in the given kinematic region. The photon pseudorapidity distributions normalized by average number of participating nucleon pairs, when plotted as a function of \eta - ybeam, are found to follow a longitudinal scaling independent of centrality and colliding ion species at both beam energies., Comment: 19 pages and 5 figures, Accepted for publication in Nuclear Physics A
Published: 2010

42. Three-Particle Coincidence of the Long Range Pseudorapidity Correlation in High Energy Nucleus-Nucleus Collisions

Author: B. I. Abelev, M. M. Aggarwal, Z. Ahammed, A. V. Alakhverdyants, B. D. Anderson, D. Arkhipkin, G. S. Averichev, J. Balewski, O. Barannikova, L. S. Barnby, S. Baumgart, D. R. Beavis, R. Bellwied, M. J. Betancourt, R. R. Betts, A. Bhasin, A. K. Bhati, H. Bichsel, J. Bielcik, J. Bielcikova, B. Biritz, L. C. Bland, I. Bnzarov, B. E. Bonner, J. Bouchet, E. Braidot, A. V. Brandin, A. Bridgeman, E. Bruna, S. Bueltmann, T. P. Burton, X. Z. Cai, H. Caines, M. Calderón de la Barca Sánchez, O. Catu, D. Cebra, R. Cendejas, M. C. Cervantes, Z. Chajecki, P. Chaloupka, S. Chattopadhyay, H. F. Chen, J. H. Chen, J. Y. Chen, J. Cheng, M. Cherney, A. Chikanian, K. E. Choi, W. Christie, P. Chung, R. F. Clarke, M. J. M. Codrington, R. Corliss, J. G. Cramer, H. J. Crawford, D. Das, S. Dash, A. Davila Leyva, L. C. De Silva, R. R. Debbe, T. G. Dedovich, M. DePhillips, A. A. Derevschikov, R. Derradi de Souza, L. Didenko, P. Djawotho, S. M. Dogra, X. Dong, J. L. Drachenberg, J. E. Draper, J. C. Dunlop, M. R. Dutta Mazumdar, L. G. Efimov, E. Elhalhuli, M. Elnimr, J. Engelage, G. Eppley, B. Erazmus, M. Estienne, L. Eun, P. Fachini, R. Fatemi, J. Fedorisin, R. G. Fersch, P. Filip, E. Finch, V. Fine, Y. Fisyak, C. A. Gagliardi, D. R. Gangadharan, M. S. Ganti, E. J. Garcia-Solis, A. Geromitsos, F. Geurts, V. Ghazikhanian, P. Ghosh, Y. N. Gorbunov, A. Gordon, O. Grebenyuk, D. Grosnick, B. Grube, S. M. Guertin, A. Gupta, N. Gupta, W. Guryn, B. Haag, T. J. Hallman, A. Hamed, L-X. Han, J. W. Harris, J. P. Hays-Wehle, M. Heinz, S. Heppelmann, A. Hirsch, E. Hjort, A. M. Hoffman, G. W. Hoffmann, D. J. Hofman, R. S. Hollis, H. Z. Huang, T. J. Humanic, L. Huo, G. Igo, A. Iordanova, P. Jacobs, W. W. Jacobs, P. Jakl, C. Jena, F. Jin, C. L. Jones, P. G. Jones, J. Joseph, E. G. Judd, S. Kabana, K. Kajimoto, K. Kang, J. Kapitan, K. Kauder, D. Keane, A. Kechechyan, D. Kettler, V. Yu. Khodyrev, D. P. Kikola, J. Kiryluk, A. Kisiel, A. G. Knospe, A. Kocoloski, D. D. Koetke, T. Kollegger, J. Konzer, M. Kopytine, I. Koralt, W. Korsch, L. Kotchenda, V. Kouchpil, P. Kravtsov, V. I. Kravtsov, K. Krueger, M. Krus, L. Kumar, P. Kurnadi, M. A. C. Lamont, J. M. Landgraf, S. LaPointe, J. Lauret, A. Lebedev, R. Lednicky, C-H. Lee, J. H. Lee, W. Leight, M. J. LeVine, C. Li, L. Li, N. Li, W. Li, X. Li, Y. Li, Z. Li, G. Lin, S. J. Lindenbaum, M. A. Lisa, F. Liu, H. Liu, J. Liu, T. Ljubicic, W. J. Llope, R. S. Longacre, W. A. Love, Y. Lu, T. Ludlam, G. L. Ma, Y. G. Ma, D. P. Mahapatra, R. Majka, O. I. Mall, L. K. Mangotra, R. Manweiler, S. Margetis, C. Markert, H. Masui, H. S. Matis, Yu. A. Matulenko, D. McDonald, T. S. McShane, A. Meschanin, R. Milner, N. G. Minaev, S. Mioduszewski, A. Mischke, M. K. Mitrovski, B. Mohanty, D. A. Morozov, M. G. Munhoz, B. K. Nandi, C. Nattrass, T. K. Nayak, J. M. Nelson, P. K. Netrakanti, M. J. Ng, L. V. Nogach, S. B. Nurushev, G. Odyniec, A. Ogawa, H. Okada, V. Okorokov, D. Olson, M. Pachr, B. S. Page, S. K. Pal, Y. Pandit, Y. Panebratsev, T. Pawlak, T. Peitzmann, V. Perevoztchikov, C. Perkins, W. Peryt, S. C. Phatak, P. Pile, M. Planinic, M. A. Ploskon, J. Pluta, D. Plyku, N. Poljak, A. M. Poskanzer, B. V. K. S. Potukuchi, C. B. Powell, D. Prindle, C. Pruneau, N. K. Pruthi, P. R. Pujahari, J. Putschke, R. Raniwala, S. Raniwala, R. L. Ray, R. Redwine, R. Reed, J. M. Rehberg, H. G. Ritter, J. B. Roberts, O. V. Rogachevskiy, J. L. Romero, A. Rose, C. Roy, L. Ruan, R. Sahoo, S. Sakai, I. Sakrejda, T. Sakuma, S. Salur, J. Sandweiss, E. Sangaline, J. Schambach, R. P. Scharenberg, N. Schmitz, T. R. Schuster, J. Seele, J. Seger, I. Selyuzhenkov, P. Seyboth, E. Shahaliev, M. Shao, M. Sharma, S. S. Shi, E. P. Sichtermann, F. Simon, R. N. Singaraju, M. J. Skoby, N. Smirnov, P. Sorensen, J. Sowinski, H. M. Spinka, B. Srivastava, T. D. S. Stanislaus, D. Staszak, J. R. Stevens, R. Stock, M. Strikhanov, B. Stringfellow, A. A. P. Suaide, M. C. Suarez, N. L. Subba, M. Sumbera, X. M. Sun, Y. Sun, Z. Sun, B. Surrow, T. J. M. Symons, A. Szanto de Toledo, J. Takahashi, A. H. Tang, Z. Tang, L. H. Tarini, T. Tarnowsky, D. Thein, J. H. Thomas, J. Tian, A. R. Timmins, S. Timoshenko, D. Tlusty, M. Tokarev, V. N. Tram, S. Trentalange, R. E. Tribble, O. D. Tsai, J. Ulery, T. Ullrich, D. G. Underwood, G. Van Buren, G. van Nieuwenhuizen, M. van Leeuwen, J. A. Vanfossen, R. Varma, G. M. S. Vasconcelos, A. N. Vasiliev, F. Videbæk, Y. P. Viyogi, S. Vokal, M. Wada, M. Walker, F. Wang, G. Wang, H. Wang, J. S. Wang, Q. Wang, X. Wang, X. L. Wang, Y. Wang, G. Webb, J. C. Webb, G. D. Westfall, C. Whitten, H. Wieman, E. Wingfield, S. W. Wissink, R. Witt, Y. Wu, W. Xie, N. Xu, Q. H. Xu, W. Xu, Y. Xu, Z. Xu, L. Xue, Y. Yang, P. Yepes, K. Yip, I-K. Yoo, Q. Yue, M. Zawisza, H. Zbroszczyk, W. Zhan, S. Zhang, W. M. Zhang, X. P. Zhang, Y. Zhang, Z. P. Zhang, J. Zhao, C. Zhong, J. Zhou, W. Zhou, X. Zhu, Y-H. Zhu, R. Zoulkarneev, Y. Zoulkarneeva, Laboratoire SUBATECH Nantes (SUBATECH), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Nantes (UN)-Mines Nantes (Mines Nantes), and STAR
Subjects: Nuclear Theory, General Physics and Astronomy, FOS: Physical sciences, 01 natural sciences, Coincidence, deuteron gold transverse momentum, High Energy Physics - Experiment, Nuclear physics, Nuclear Theory (nucl-th), Charge ordering, High Energy Physics - Experiment (hep-ex), (3particle) impact parameter, High Energy Physics - Phenomenology (hep-ph), trigger heavy ion, scattering correlation, long-range rapidity, correlation correlation, dependence STAR Brookhaven RHIC Coll 200 GeV-cms/nucleon, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Nuclear Experiment (nucl-ex), 010306 general physics, Nuclear Experiment, Physics, Range (particle radiation), 010308 nuclear & particles physics, Ridge (differential geometry), NATURAL SCIENCES. Physics, PRIRODNE ZNANOSTI. Fizika, High Energy Physics - Phenomenology, Deuterium, Pseudorapidity, Physics::Space Physics, Particle, High Energy Physics::Experiment, Atomic physics, Event (particle physics)
Abstract: We report the first three-particle coincidence measurement in pseudorapidity ($\Delta\eta$) between a high transverse momentum ($p_{\perp}$) trigger particle and two lower $p_{\perp}$ associated particles within azimuth $\mid$$\Delta\phi$$\mid$$, Comment: 7 pages, 4 figures
Published: 2010

43. Parton energy loss in heavy-ion collisions via direct-photon and charged-particle azimuthal correlations

Author: Anik Gupta, X. Zhu, M. J. Skoby, Frank Jm Geurts, E. Elhalhuli, Mateusz Andrzej Ploskon, Jifa Tian, R. Witt, S. Mioduszewski, V. Yu Khodyrev, Xiangming Sun, Subrata Pal, Donald M. McDonald, B. K. Srivastava, B. Erazmus, S. Bueltmann, M. DePhillips, Boris Hippolyte, B. D. Anderson, L. H. Tarini, J. G. Cramer, Michal Sumbera, B. Grube, W. Guryn, O. G. Grebenyuk, Neeraj Gupta, D. Cebra, K. Yip, J. S. Wang, N. K. Pruthi, J. L. Drachenberg, Russell Richard Betts, J. Fedorisin, D. G. Underwood, Lijuan Ruan, S. Zhang, A. G. Knospe, M. Shao, Elena Bruna, T. J. Hallman, J. Cheng, T. J. M. Symons, L. C. De Silva, S. Trentalange, Basanta Kumar Nandi, P. Fachini, M. Estienne, A. Szanto de Toledo, J. Kapitan, A. R. Timmins, S. M. Dogra, L. Kotchenda, A. Feng, T. Tarnowsky, T. Pawlak, A. V. Alakhverdyants, K. S.F.F. Guimaraes, F. Videbæk, A. Ridiger, S. W. Wissink, B. Biritz, G. Eppley, W. Christie, L. C. Bland, Jay Roberts, A. K. Bhati, D. Keane, G. Webb, Q. H. Xu, Nikolai Smirnov, B. Haag, K. Kang, Xiaoping Zhang, Nikola Poljak, Sukalyan Chattopadhyay, L. K. Mangotra, I. Bnzarov, V. A. Okorokov, P. R. Pujahari, H. Bichsel, J. Pluta, M. S. Ganti, G. Odyniec, L. G. Efimov, Y. Zoulkarneeva, Zebo Tang, T. P. Burton, O. I. Mall, W. M. Zhang, Andrey Vasiliev, Jorn Henning Putschke, A. V. Brandin, S. Heppelmann, T. S. McShane, H. Okada, Chitrasen Jena, Haiyan Wang, R. Manweiler, Hongfang Liu, P. Kurnadi, C-H. Lee, T. K. Nayak, C. Roy, Z. Chajecki, R. N. Singaraju, Y. P. Lu, William Axel Leight, B. E. Bonner, Zhenyu Zhang, J. W. Harris, V. Perevoztchikov, S. E. Vigdor, Christian Claude Kuhn, L. Huo, A. P. Meschanin, X. Z. Cai, M. R. Cosentino, O. D. Tsai, S. Baumgart, L. Liu, Q. Wang, C. L. Jones, C. Perkins, A. M. Poskanzer, S. R. Klein, X. L. Wang, S. M. Guertin, Alexandre Alarcon Do Passo Suaide, R. E. Tribble, M. J. Russcher, N. L. Subba, Matthew Walker, D. D. Koetke, J. E. Draper, Y. Fisyak, I. K. Yoo, D. L. Olson, Guo-Liang Ma, F. Benedosso, M. Elnimr, M. C. Cervantes, T. Peitzmann, A. Kechechyan, Andre Mischke, C. Zhong, Gerald W Hoffmann, Janet Elizabeth Seger, D. P. Mahapatra, David Jonathan Hofman, J. C. Dunlop, A. M. Hoffman, R. S. Hollis, Y. J. Sun, M. C. Suarez, H. Masui, V. Ghazikhanian, P. Yepes, I. Sakrejda, R. Milner, P. Chaloupka, M. Krus, R. Cendejas, K. Kajimoto, D. Thein, A. A. Derevschikov, S. Kabana, A. S. Hirsch, Zubayer Ahammed, J. C. Webb, M. J. LeVine, Y. P. Viyogi, J. X. Zuo, Anju Bhasin, Sergei A. Voloshin, P. Kravtsov, B. V.K.S. Potukuchi, M. Kopytine, A. Chikanian, T. J. Humanic, R. P. Redwine, Yu-Gang Ma, T. G. Dedovich, A. H. Tang, V. N. Tram, Jing Zhou, J. Engelage, Jana Bielcikova, X. Dong, Peter Martin Jacobs, Y. Yang, S. LaPointe, H. Z. Huang, S. Vokal, N. Li, D. R. Gangadharan, T. Sakuma, Christine Nattrass, Marcelo Gameiro Munhoz, D. J. Prindle, Qian Yue, S. C. Phatak, W. J. Llope, A. Lebedev, J. Sowinski, A. Gordon, E. G. Judd, A. Geromitsos, Premomoy Ghosh, Sevil Salur, Y. Wang, J. Takahashi, D. Arkhipkin, A. Hamed, R. Varma, P. Sorensen, V. Fine, X. H. Shi, T. D. S. Stanislaus, Yu A. Matulenko, Peter Graham Jones, A. Iordanova, M. Calderon De La Barca Sanchez, J. M. Landgraf, O. Catu, S. B. Nurushev, B. S. Page, Donika Plyku, M. A. Lisa, D. P. Kikola, H. H. Wieman, B. Stringfellow, M. Strikhanov, L. Didenko, Bedangadas Mohanty, J. Baudot, J. Kiryluk, J. Konzer, G. Van Buren, Ki-Seok Choi, A. Kocoloski, S. Dash, G. Wang, Jie Liu, Marek Bombara, J. Sandweiss, D. A. Morozov, P. Seyboth, S. S. Shi, Jongmin Lee, R. L. Ray, M. Zawisza, H. M. Spinka, Hanna Paulina Zbroszczyk, D. R. Beavis, M. Wada, F. Liu, T. W. Ludlam, M. Bystersky, J. L. Romero, J. M. Nelson, E. J. Garcia-Solis, D. Staszak, M. S. Daugherity, I. Koralt, Yan Li, Jing-Han Chen, W. Peryt, R. D. Majka, L. V. Nogach, M. J. Ng, J. H. Thomas, V. I. Kravtsov, G. Van Nieuwenhuizen, J. Y. Chen, S. Margetis, R. F. Clarke, J. Schambach, R. Derradi de Souza, B. I. Abelev, C-Q. Li, R. P. Scharenberg, Christina Markert, H. S. Matis, T. Ljubicic, J. Ulery, E. Finch, D. Kettler, H. G. Ritter, Y. Panebratsev, D. Grosnick, V. Kouchpil, M. J. M. Codrington, O. Barannikova, R. Bellwied, W. W. Jacobs, H. Caines, Sudhir Raniwala, J. Lauret, G. S. Averichev, L. Gaillard, A. Shabetai, R. Lednicky, P. Djawotho, C. A. Whitten, Feng Jin, Z. J. Sun, Yi Zhang, E. Hjort, Y. F. Wu, R. Corliss, Rolf K. Reed, E. P. Sichtermann, D. Tlusty, Mirko Planinic, J. Balewski, Rashmi Raniwala, Claude Andre Pruneau, S. J. Lindenbaum, T. Ullrich, Y. N. Gorbunov, N. Xu, P. Filip, R. Zoulkarneev, S. Sakai, L. Eun, P. Pile, G. D. Westfall, Sergey Timoshenko, Petr Jákl, Wolfgang Korsch, Xuan Wang, A. Ogawa, H. F. Chen, Thomas A. Trainor, Mikhail Tokarev, Ermes Braidot, M. Sharma, Adam Ryszard Kisiel, Wei Xie, H. J. Crawford, R. Fatemi, Michael Joseph Betancourt, J. Joseph, K. Krueger, G. M.S. Vasconcelos, M. Sarsour, N. G. Minaev, J. A. Vanfossen, Y. Pandit, N. Schmitz, W. He, E. Shahaliev, M. Cherney, Thomas Michael Cormier, Lokesh Kumar, M. Heinz, Lee Stuart Barnby, Jaroslav Bielcik, M. R. Dutta Mazumdar, O. V. Rogachevskiy, W. A. Love, I. Selyuzhenkov, Bernd Surrow, Pawan Kumar Netrakanti, C. A. Gagliardi, M. Pachr, Madan M. Aggarwal, Fuqiang Wang, Yong Xu, R. S. Longacre, W. L. Zhan, Frank Simon, Debasish Das, Raghunath Sahoo, M. A.C. Lamont, G. Igo, J. Bouchet, K. Kauder, Andrew Rose, Y. Zhao, Z. Xu, G. Lin, Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire SUBATECH Nantes (SUBATECH), Mines Nantes (Mines Nantes)-Université de Nantes (UN)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), STAR, and Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Nuclear reaction, Nuclear and High Energy Physics, Meson, Astrophysics::High Energy Astrophysical Phenomena, Hadron, FOS: Physical sciences, Parton, scattering Brookhaven RHIC Coll parton, 01 natural sciences, 7. Clean energy, associated production angular correlation, Nuclear physics, Pion, 0103 physical sciences, interaction gold charged particle, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], yield parton, Nuclear Experiment (nucl-ex), 010306 general physics, Nuclear Experiment, GeneralLiterature_REFERENCE(e.g.,dictionaries,encyclopedias,glossaries), ComputingMilieux_MISCELLANEOUS, Physics, 010308 nuclear & particles physics, path length STAR 200 GeV-cms/nucleon, hadroproduction charged particle, dependence heavy ion, Charged particle, p p, energy loss photon, direct production pi0, (charged particle photon) angular correlation, (charged particle pi0) transverse momentum, NATURAL SCIENCES. Physics, PRIRODNE ZNANOSTI. Fizika, High Energy Physics::Experiment, Atomic physics, Relativistic Heavy Ion Collider, STAR detector
Abstract: Charged-particle spectra associated with direct photon ($\gamma_{dir} $) and $\pi^0$ are measured in $p$+$p$ and Au+Au collisions at center-of-mass energy $\sqrt{s_{_{NN}}}=200$ GeV with the STAR detector at RHIC. A hower-shape analysis is used to partially discriminate between $\gamma_{dir}$ and $\pi^0$. Assuming no associated charged particles in the $\gamma_{dir}$ direction (near side) and small contribution from fragmentation photons ($\gamma_{frag}$), the associated charged-particle yields opposite to $\gamma_{dir}$ (away side) are extracted. At mid-rapidity ($|\eta, Comment: submitted to Phys. Rev. Lett, 6 pages, 4 figures
Published: 2010

44. Longitudinal double-spin asymmetry and cross section for inclusive neutral pion production at midrapidity in polarized proton collisions ats=200 GeV

Author: B. I. Abelev, M. M. Aggarwal, Z. Ahammed, A. V. Alakhverdyants, B. D. Anderson, D. Arkhipkin, G. S. Averichev, J. Balewski, O. Barannikova, L. S. Barnby, S. Baumgart, D. R. Beavis, R. Bellwied, F. Benedosso, M. J. Betancourt, R. R. Betts, A. Bhasin, A. K. Bhati, H. Bichsel, J. Bielcik, J. Bielcikova, B. Biritz, L. C. Bland, B. E. Bonner, J. Bouchet, E. Braidot, A. V. Brandin, A. Bridgeman, E. Bruna, S. Bueltmann, I. Bunzarov, T. P. Burton, X. Z. Cai, H. Caines, M. Calderón de la Barca Sánchez, O. Catu, D. Cebra, R. Cendejas, M. C. Cervantes, Z. Chajecki, P. Chaloupka, S. Chattopadhyay, H. F. Chen, J. H. Chen, J. Y. Chen, J. Cheng, M. Cherney, A. Chikanian, K. E. Choi, W. Christie, P. Chung, R. F. Clarke, M. J. M. Codrington, R. Corliss, J. G. Cramer, H. J. Crawford, D. Das, S. Dash, A. Davila Leyva, L. C. De Silva, R. R. Debbe, T. G. Dedovich, M. DePhillips, A. A. Derevschikov, R. Derradi de Souza, L. Didenko, P. Djawotho, S. M. Dogra, X. Dong, J. L. Drachenberg, J. E. Draper, J. C. Dunlop, M. R. Dutta Mazumdar, L. G. Efimov, E. Elhalhuli, M. Elnimr, J. Engelage, G. Eppley, B. Erazmus, M. Estienne, L. Eun, P. Fachini, R. Fatemi, J. Fedorisin, R. G. Fersch, P. Filip, E. Finch, V. Fine, Y. Fisyak, C. A. Gagliardi, D. R. Gangadharan, M. S. Ganti, E. J. Garcia-Solis, A. Geromitsos, F. Geurts, V. Ghazikhanian, P. Ghosh, Y. N. Gorbunov, A. Gordon, O. Grebenyuk, D. Grosnick, B. Grube, S. M. Guertin, A. Gupta, N. Gupta, W. Guryn, B. Haag, T. J. Hallman, A. Hamed, L.-X. Han, J. W. Harris, J. P. Hays-Wehle, M. Heinz, S. Heppelmann, A. Hirsch, E. Hjort, A. M. Hoffman, G. W. Hoffmann, D. J. Hofman, R. S. Hollis, H. Z. Huang, T. J. Humanic, L. Huo, G. Igo, A. Iordanova, P. Jacobs, W. W. Jacobs, P. Jakl, C. Jena, F. Jin, C. L. Jones, P. G. Jones, J. Joseph, E. G. Judd, S. Kabana, K. Kajimoto, K. Kang, J. Kapitan, K. Kauder, D. Keane, A. Kechechyan, D. Kettler, D. P. Kikola, J. Kiryluk, A. Kisiel, S. R. Klein, A. G. Knospe, A. Kocoloski, D. D. Koetke, T. Kollegger, J. Konzer, M. Kopytine, I. Koralt, W. Korsch, L. Kotchenda, V. Kouchpil, P. Kravtsov, K. Krueger, M. Krus, L. Kumar, P. Kurnadi, M. A. C. Lamont, J. M. Landgraf, S. LaPointe, J. Lauret, A. Lebedev, R. Lednicky, C.-H. Lee, J. H. Lee, W. Leight, M. J. LeVine, C. Li, L. Li, N. Li, W. Li, X. Li, Y. Li, Z. Li, G. Lin, S. J. Lindenbaum, M. A. Lisa, F. Liu, H. Liu, J. Liu, T. Ljubicic, W. J. Llope, R. S. Longacre, W. A. Love, Y. Lu, G. L. Ma, Y. G. Ma, D. P. Mahapatra, R. Majka, O. I. Mall, L. K. Mangotra, R. Manweiler, S. Margetis, C. Markert, H. Masui, H. S. Matis, Yu. A. Matulenko, D. McDonald, T. S. McShane, A. Meschanin, R. Milner, N. G. Minaev, S. Mioduszewski, A. Mischke, M. K. Mitrovski, B. Mohanty, M. M. Mondal, D. A. Morozov, M. G. Munhoz, B. K. Nandi, C. Nattrass, T. K. Nayak, J. M. Nelson, P. K. Netrakanti, M. J. Ng, L. V. Nogach, S. B. Nurushev, G. Odyniec, A. Ogawa, H. Okada, V. Okorokov, D. Olson, M. Pachr, B. S. Page, S. K. Pal, Y. Pandit, Y. Panebratsev, T. Pawlak, T. Peitzmann, V. Perevoztchikov, C. Perkins, W. Peryt, S. C. Phatak, P. Pile, M. Planinic, M. A. Ploskon, J. Pluta, D. Plyku, N. Poljak, A. M. Poskanzer, B. V. K. S. Potukuchi, C. B. Powell, D. Prindle, C. Pruneau, N. K. Pruthi, P. R. Pujahari, J. Putschke, R. Raniwala, S. Raniwala, R. L. Ray, R. Redwine, R. Reed, J. M. Rehberg, H. G. Ritter, J. B. Roberts, O. V. Rogachevskiy, J. L. Romero, A. Rose, C. Roy, L. Ruan, M. J. Russcher, R. Sahoo, S. Sakai, I. Sakrejda, T. Sakuma, S. Salur, J. Sandweiss, E. Sangaline, J. Schambach, R. P. Scharenberg, N. Schmitz, T. R. Schuster, J. Seele, J. Seger, I. Selyuzhenkov, P. Seyboth, E. Shahaliev, M. Shao, M. Sharma, S. S. Shi, E. P. Sichtermann, F. Simon, R. N. Singaraju, M. J. Skoby, N. Smirnov, P. Sorensen, J. Sowinski, H. M. Spinka, B. Srivastava, T. D. S. Stanislaus, D. Staszak, J. R. Stevens, R. Stock, M. Strikhanov, B. Stringfellow, A. A. P. Suaide, M. C. Suarez, N. L. Subba, M. Sumbera, X. M. Sun, Y. Sun, Z. Sun, B. Surrow, T. J. M. Symons, A. Szanto de Toledo, J. Takahashi, A. H. Tang, Z. Tang, L. H. Tarini, T. Tarnowsky, D. Thein, J. H. Thomas, J. Tian, A. R. Timmins, S. Timoshenko, D. Tlusty, M. Tokarev, T. A. Trainor, V. N. Tram, S. Trentalange, R. E. Tribble, O. D. Tsai, J. Ulery, T. Ullrich, D. G. Underwood, G. Van Buren, G. van Nieuwenhuizen, J. A. Vanfossen, R. Varma, G. M. S. Vasconcelos, A. N. Vasiliev, F. Videbaek, Y. P. Viyogi, S. Vokal, S. A. Voloshin, M. Wada, M. Walker, F. Wang, G. Wang, H. Wang, J. S. Wang, Q. Wang, X. Wang, X. L. Wang, Y. Wang, G. Webb, J. C. Webb, G. D. Westfall, C. Whitten, H. Wieman, E. Wingfield, S. W. Wissink, R. Witt, Y. Wu, W. Xie, N. Xu, Q. H. Xu, W. Xu, Y. Xu, Z. Xu, L. Xue, Y. Yang, P. Yepes, K. Yip, I-K. Yoo, Q. Yue, M. Zawisza, H. Zbroszczyk, W. Zhan, S. Zhang, W. M. Zhang, X. P. Zhang, Y. Zhang, Z. P. Zhang, J. Zhao, C. Zhong, J. Zhou, W. Zhou, X. Zhu, Y. H. Zhu, R. Zoulkarneev, and Y. Zoulkarneeva
Subjects: Quantum chromodynamics, Physics, Nuclear and High Energy Physics, Particle physics, Proton, 010308 nuclear & particles physics, media_common.quotation_subject, Hadron, Perturbative QCD, 01 natural sciences, 7. Clean energy, Asymmetry, Gluon, Nuclear physics, Pion, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Nucleon, media_common
Abstract: We report a measurement of the longitudinal double-spin asymmetry ALL and the differential cross section for inclusive π0 production at midrapidity in polarized proton collisions at √s=200 GeV. The cross section was measured over a transverse momentum range of 1
Published: 2009

45. Long range rapidity correlations and jet production in high energy nuclear collisions

Author: M. DePhillips, Michal Sumbera, Hank Crawford, B. E. Bonner, P. R. Pujahari, S. W. Wissink, B. Haag, Nikola Poljak, L. Kotchenda, Bedangadas Mohanty, J. Lauret, O. D. Tsai, S. Kabana, B. Srivastava, M. Wada, M. Bystersky, L. C. Bland, F. Videbæk, T. P. Burton, N. Schmitz, M. Elnimr, I. K. Yoo, M. C. Cervantes, G. Webb, D. R. Gangadharan, Marcelo Gameiro Munhoz, D. J. Prindle, Zebo Tang, D. Thein, R. Milner, A. Shabetai, Debasish Das, A. Ridiger, Jongmin Lee, M. Heinz, Lee Stuart Barnby, A. H. Tang, K. Kang, Xiang Sun, R. L. Ray, B. Grube, M. Kopytine, Jie Liu, K. Kajimoto, E. G. Judd, Jaroslav Bielcik, Raghunath Sahoo, Hanna Paulina Zbroszczyk, M. A.C. Lamont, G. Igo, Mikhail Tokarev, S. Heppelmann, J. G. Cramer, Donika Plyku, Z. Chajecki, Sevil Salur, Y. Wang, M. A. Lisa, W. Guryn, William Axel Leight, L. Liu, C. L. Jones, D. R. Beavis, P. Filip, J. Bouchet, C. Perkins, M. R. Dutta Mazumdar, I. Sakrejda, M. S. Ganti, Z. J. Sun, H. Bichsel, M. C. Suarez, V. Fine, S. R. Klein, William Jacobs, N. L. Subba, J. Engelage, O. V. Rogachevskiy, T. Peitzmann, K. Kauder, Congbo Li, D. L. Olson, T. D. S. Stanislaus, A. Geromitsos, Premomoy Ghosh, D. Staszak, H. H. Wieman, J. X. Zuo, O. G. Grebenyuk, D. D. Koetke, S. Sakai, S. M. Guertin, G. Lin, P. Pile, W. A. Love, W. Christie, A. K. Bhati, D. Keane, Sudhir Raniwala, T. S. McShane, Anik Gupta, Alexandre Alarcon Do Passo Suaide, A. A. Derevschikov, D. Tlusty, J. Fedorisin, Nikolai Smirnov, Petr Jákl, L. V. Nogach, Y. Zoulkarneeva, Xiaoping Zhang, Ermes Braidot, Y. Yang, S. LaPointe, N. Li, D. P. Mahapatra, R. S. Hollis, Andrew Rose, Chitrasen Jena, Y. Zhao, Madan M. Aggarwal, Christine Nattrass, L. K. Mangotra, R. Manweiler, Hongfang Liu, O. I. Mall, Wei Xie, S. B. Nurushev, Sergei A. Voloshin, Mirko Planinic, A. G. Knospe, A. Gordon, S. Baumgart, C-H. Lee, T. K. Nayak, Fuqiang Wang, J. E. Draper, E. Shahaliev, Jorn Henning Putschke, M. Zawisza, P. Sorensen, X. H. Shi, Y. P. Lu, A. V. Brandin, M. J. Skoby, Frank Jm Geurts, L. G. Efimov, E. Elhalhuli, J. Konzer, Yong Xu, V. Perevoztchikov, B. D. Anderson, H. Okada, J. Joseph, G. M.S. Vasconcelos, Adam Ryszard Kisiel, Matthew Walker, S. E. Vigdor, J. Baudot, Jifa Tian, E. P. Sichtermann, Y. Panebratsev, D. Grosnick, V. Kouchpil, H. Caines, N. K. Pruthi, A. Kechechyan, Andre Mischke, Ki-Seok Choi, P. G. Jones, Christian Claude Kuhn, C. A. Whitten, Feng Jin, S. Vokal, Q. Wang, Yifu Sun, Christina Markert, Q. H. Xu, G. Eppley, J. Seger, R. Corliss, M. Krus, Y. Pandit, L. Didenko, R. Cendejas, Y. N. Gorbunov, Haiyan Wang, Jana Bielcikova, A. Szanto de Toledo, B. Erazmus, S. J. Lindenbaum, B. V.K.S. Potukuchi, Yi Zhang, Xu Cai, W. L. Zhan, J. Pluta, J. H. Thomas, M. J. Russcher, J. Kapitan, T. Ullrich, R. Fatemi, Michael Joseph Betancourt, H. G. Ritter, Y. P. Viyogi, Guo-Liang Ma, A. R. Timmins, S. M. Dogra, Y. Fisyak, M. S. Daugherity, Yu-Gang Ma, A. Hirsch, Rolf K. Reed, P. Kurnadi, Frank Simon, J. Balewski, Rashmi Raniwala, K. Yip, J. S. Wang, A. Chikanian, K. Krueger, A. Ogawa, Zhenyu Zhang, W. J. Llope, M. Sharma, R. N. Singaraju, L. Huo, A. P. Meschanin, T. Pawlak, M. R. Cosentino, J. A. Vanfossen, Claude Andre Pruneau, J. Sandweiss, R. E. Tribble, Gerald W Hoffmann, I. Selyuzhenkov, A. V. Alakhverdyants, J. C. Webb, J. Kiryluk, Sergey Timoshenko, P. Kravtsov, D. Kettler, F. Benedosso, W. He, Russell Richard Betts, Bernd Surrow, G. Wang, R. Zoulkarneev, M. Cherney, K. S.F.F. Guimaraes, Wolfgang Korsch, B. Stringfellow, Thomas Michael Cormier, E. Hjort, D. G. Underwood, G. S. Averichev, Lokesh Kumar, D. A. Morozov, P. Seyboth, E. J. Garcia-Solis, J. Sowinski, Lijuan Ruan, M. Sarsour, Gary Westfall, A. M. Poskanzer, Jing Zhou, Thomas Humanic, L. H. Tarini, L. Eun, R. Derradi de Souza, B. I. Abelev, S. Bueltmann, T. G. Dedovich, Pawan Kumar Netrakanti, M. Shao, Subhasis Chattopadhyay, T. J. Hallman, T. J. M. Symons, J. Ulery, T. Sakuma, Xuan Wang, T. Ljubicic, Jianping Cheng, Thomas A. Trainor, G. Odyniec, S. C. Phatak, L. C. De Silva, X. L. Wang, H. M. Spinka, C. Zhong, I. Bnzarov, S. S. Shi, Elena Bruna, H. Z. Huang, R. P. Scharenberg, C. A. Gagliardi, G. Van Buren, M. J. M. Codrington, X. Dong, H. S. Matis, M. Pachr, Neeraj Gupta, D. Cebra, V. Ghazikhanian, S. Trentalange, O. Barannikova, R. Bellwied, M. Estienne, V. N. Tram, I. Koralt, M. J. Ng, Marek Bombara, L. Gaillard, R. Lednicky, P. Djawotho, Zhongbin Xu, V. I. Kravtsov, G. Van Nieuwenhuizen, D. Arkhipkin, A. Hamed, E. Finch, A. Iordanova, T. W. Ludlam, Anju Bhasin, R. P. Redwine, J. M. Nelson, Yuanfang Wu, Yan Li, Jing-Han Chen, Basanta Kumar Nandi, W. Peryt, R. S. Longacre, T. Tarnowsky, B. Biritz, David Jonathan Hofman, H. Masui, V. A. Okorokov, P. Fachini, C. Roy, J. M. Landgraf, Peter Martin Jacobs, J. Takahashi, P. Chaloupka, S. Margetis, H. F. Chen, W. M. Zhang, Andrey Vasiliev, Nu Xu, A. M. Hoffman, F. Liu, J. L. Drachenberg, S. Zhang, M. Strikhanov, R. D. Majka, J. L. Romero, A. Feng, J. Y. Chen, R. F. Clarke, Jay Roberts, X. Zhu, Mateusz Andrzej Ploskon, R. Witt, S. Mioduszewski, V. Yu Khodyrev, Subrata Pal, Donald M. McDonald, Boris Hippolyte, J. C. Dunlop, Qian Yue, R. Varma, Yu A. Matulenko, B. S. Page, D. P. Kikola, Zubayer Ahammed, M. J. LeVine, M. Calderon De La Barca Sanchez, A. Lebedev, O. Catu, J. Schambach, A. Kocoloski, S. Dash, N. G. Minaev, J. W. Harris, and P. Yepes
Subjects: Nuclear and High Energy Physics, di-hadron, Hadron, FOS: Physical sciences, 01 natural sciences, Spectral line, Nuclear physics, correlations, 0103 physical sciences, Rapidity, Nuclear Experiment (nucl-ex), Nuclear Experiment, 010306 general physics, Physics, Jet (fluid), Range (particle radiation), 010308 nuclear & particles physics, Collaboration, NATURAL SCIENCES. Physics, PRIRODNE ZNANOSTI. Fizika, Deuterium, Perspective, Quark–gluon plasma, Quark-Gluon Plasma, High Energy Physics::Experiment, Atomic physics, Relativistic Heavy Ion Collider
Abstract: The STAR Collaboration at RHIC presents a systematic study of high transverse momentum charged di-hadron correlations at small azimuthal pair separation \dphino, in d+Au and central Au+Au collisions at $\rts = 200$ GeV. Significant correlated yield for pairs with large longitudinal separation \deta is observed in central Au+Au, in contrast to d+Au collisions. The associated yield distribution in \detano$\times$\dphi can be decomposed into a narrow jet-like peak at small angular separation which has a similar shape to that found in d+Au collisions, and a component which is narrow in \dphi and \textcolor{black}{depends only weakly on} $\deta$, the "ridge". Using two systematically independent analyses, \textcolor{black}{finite ridge yield} is found to persist for trigger $\pt > 6$ \GeVc, indicating that it is correlated with jet production. The transverse momentum spectrum of hadrons comprising the ridge is found to be similar to that of bulk particle production in the measured range ($2 < \pt < 4 \GeVc$)., Submitted to Phys. Rev. C, 9 pages, 6 figures
Published: 2009

46. Longitudinal spin transfer toΛandΛ¯hyperons in polarized proton-proton collisions ats=200 GeV

Author: B. Haag, L. K. Mangotra, R. Manweiler, Hongfang Liu, G. Eppley, Zebo Tang, Z. Chajecki, K. Yip, A. M. Poskanzer, J. C. Dunlop, J. S. Wang, H. Z. Huang, S. Vokal, C. Perkins, T. J. Humanic, J. Pluta, A. Kechechyan, Andre Mischke, Zubayer Ahammed, R. R. Debbe, D. Tlusty, Mirko Planinic, M. J. LeVine, R. S. Longacre, L. C. Bland, V. Ghazikhanian, J. Konzer, Adam Ryszard Kisiel, T. Peitzmann, H. J. Crawford, Qian Yue, M. Krus, R. Cendejas, Bedangadas Mohanty, Debasish Das, M. C. Suarez, Li Xue, J. W. Harris, J. Kiryluk, Y. N. Gorbunov, J. Ulery, H. G. Ritter, O. Barannikova, R. Bellwied, P. Kurnadi, J. L. Romero, Raghunath Sahoo, M. A.C. Lamont, Y. H. Zhu, R. Varma, James Prewitt Hays-Wehle, D. Thein, Zhenyu Zhang, Yu A. Matulenko, B. S. Page, F. Liu, D. A. Morozov, C-Q. Li, G. Igo, R. G. Fersch, R. E. Tribble, D. P. Kikola, E. Finch, Jorn Henning Putschke, P. Yepes, Z. Xu, G. Lin, B. Stringfellow, F. Benedosso, A. V. Brandin, A. H. Tang, L. Kotchenda, T. P. Burton, J. H. Chen, Gerald W Hoffmann, M. Kopytine, J. Bouchet, R. P. Scharenberg, Christina Markert, H. S. Matis, J. L. Drachenberg, M. Tokarev, Xing-Jiang Zhu, K. Kang, T. S. McShane, R. Fatemi, Michael Joseph Betancourt, Anik Gupta, H. Okada, G. Wang, R. D. Majka, Thorsten Sven Kollegger, M. Heinz, K. Krueger, W. W. Jacobs, N. Gupta, Xuan Zhang, Andrew Rose, Y. Zhao, T. G. Dedovich, Jay Roberts, E. Hjort, Y. F. Wu, E. P. Sichtermann, Lee Stuart Barnby, T. Sakuma, S. Margetis, S. Baumgart, J. A. Vanfossen, R. F. Clarke, J. Schambach, Frank Jm Geurts, S. C. Phatak, E. Elhalhuli, H. Masui, S. Heppelmann, P. Seyboth, Jifa Tian, S. Bueltmann, W. Christie, T. D. S. Stanislaus, J. Lauret, Q. H. Xu, Matthew Walker, R. Lednicky, Xiangming Sun, Guo-Liang Ma, V. Fine, E. J. Garcia-Solis, Jie Liu, W. M. Zhang, D. D. Koetke, J. E. Draper, Y. J. Sun, K. Kauder, Andrey Vasiliev, Jake Y. Chen, H. H. Wieman, Jaroslav Bielcik, P. Djawotho, I. K. Yoo, G. Van Buren, R. N. Singaraju, L. Huo, A. P. Meschanin, M. Cherney, S. Kabana, Lokesh Kumar, Hanna Paulina Zbroszczyk, I. Sakrejda, K. Kajimoto, P. Chung, Y. P. Viyogi, S. S. Shi, J. Balewski, Rashmi Raniwala, P. R. Pujahari, B. D. Anderson, Sergey Timoshenko, Wei Xie, J. Joseph, D. R. Gangadharan, E. G. Judd, Janet Elizabeth Seger, A. M. Hoffman, D. R. Beavis, R. Derradi de Souza, B. I. Abelev, S. M. Guertin, Alexandre Alarcon Do Passo Suaide, Y. Yang, G. M.S. Vasconcelos, T. W. Ludlam, Yinina Ma, Anju Bhasin, M. R. Dutta Mazumdar, J. G. Cramer, S. LaPointe, N. Li, Mateusz Andrzej Ploskon, R. Witt, N. K. Pruthi, W. Xu, Wolfgang Korsch, A. S. Hirsch, O. V. Rogachevskiy, J. M. Nelson, Y. Pandit, M. DePhillips, R. P. Redwine, S. Mioduszewski, Claude Andre Pruneau, S. Q. Zhang, C. L. Jones, A. Gordon, D. P. Mahapatra, N. Schmitz, R. S. Hollis, I. Koralt, A. Lebedev, V. Yu Khodyrev, L. V. Nogach, Donald M. McDonald, J. Engelage, M. J. Ng, V. I. Kravtsov, T. R. Schuster, Sergey Voloshin, Christine Nattrass, J. C. Webb, E. Shahaliev, Yan Li, P. Kravtsov, W. Peryt, Michal Sumbera, R. Reed, B. K. Srivastava, A. Chikanian, M. J. Skoby, G. Van Nieuwenhuizen, A. Bridgeman, W. A. Love, O. Catu, Xuan Wang, Ross Milner, S. W. Wissink, A. Ogawa, H. F. Chen, A. Geromitsos, M. K. Mitrovski, Thomas A. Trainor, T. Ullrich, A. Kocoloski, Nikola Poljak, S. Dash, Premomoy Ghosh, J. M. Landgraf, M. Wada, W. Zhou, Haiyan Wang, W. J. Llope, M. J. M. Codrington, R. Zoulkarneev, M. Strikhanov, V. N. Tram, X. Z. Cai, Ki-Seok Choi, I. Selyuzhenkov, Vitaly Okorokov, J. Sandweiss, David Jonathan Hofman, M. Sharma, Bernd Surrow, J. Sowinski, Peter Martin Jacobs, M. Calderón De Labarcasánchez, J. Takahashi, S. B. Nurushev, O. I. Mall, L. Eun, L-X. Han, Pawan Kumar Netrakanti, J. Seele, C. A. Gagliardi, J. H. Thomas, B. V.K.S. Potukuchi, F. Videbæk, M. Pachr, Y. Fisyak, D. Arkhipkin, G. Webb, A. Hamed, Madan M. Aggarwal, Fuqiang Wang, J. M. Rehberg, X. L. Wang, D. Kettler, Yong Xu, N. G. Minaev, G. S. Averichev, Sukalyan Chattopadhyay, A. Iordanova, C. Zhong, M. S. Ganti, W. L. Zhan, Frank Simon, L. H. Tarini, P. Pile, X. Dong, Chitrasen Jena, N. Xu, P. Filip, Y. P. Lu, I. Bnzarov, V. Perevoztchikov, S. K. Pal, Justin Stevens, Z. J. Sun, S. Sakai, G. D. Westfall, Basanta Kumar Nandi, Petr Jákl, T. Tarnowsky, B. Biritz, Jongmin Lee, R. L. Ray, X. Li, Elena Bruna, C. Roy, D. Staszak, T. Ljubicic, M. Zawisza, H. M. Spinka, C. A. Whitten, Feng Jin, A. Szanto de Toledo, J. Kapitan, L. C. DeSilva, R. Corliss, H. Caines, Sudhir Raniwala, P. Chaloupka, A. R. Timmins, S. M. Dogra, S. J. Lindenbaum, T. Pawlak, A. V. Alakhverdyants, Russell Richard Betts, D. G. Underwood, Lijuan Ruan, P. Fachini, M. Shao, William Axel Leight, S. R. Klein, N. L. Subba, D. L. Olson, T. J. Hallman, J. Cheng, T. J. M. Symons, A. A. Derevschikov, Jana Bielcikova, B. Grube, P. Sorensen, Peter Graham Jones, H. Bichsel, G. Odyniec, Y. Zoulkarneeva, Zhibing Li, W. Guryn, L. Didenko, O. G. Grebenyuk, J. Fedorisin, A. G. Knospe, Q. Wang, M. J. Russcher, Jing Zhou, B. Erazmus, D. Cebra, S. Trentalange, M. Estienne, Marcelo Gameiro Munhoz, D. J. Prindle, Donika Plyku, M. A. Lisa, E. Braidot, A. K. Bhati, D. Keane, Nikolai Smirnov, R. Stock, L. G. Efimov, C-H. Lee, T. K. Nayak, Y. Panebratsev, D. Grosnick, V. Kouchpil, Yi Zhang, B. E. Bonner, O. D. Tsai, M. Elnimr, M. C. Cervantes, Sevil Salur, and Y. Wang
Subjects: Physics, Nuclear and High Energy Physics, Proton, 010308 nuclear & particles physics, Nuclear Theory, Hadron, Lambda, Lambda baryon, 7. Clean energy, 01 natural sciences, Nuclear physics, Baryon, Pseudorapidity, 0103 physical sciences, Physics::Accelerator Physics, High Energy Physics::Experiment, Atomic physics, Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider, STAR detector
Abstract: The longitudinal spin transfer, D(LL), from high energy polarized protons to Lambda and Lambda hyperons has been measured for the first time in proton-proton collisions at s=200 GeV with the STAR detector at the Relativistic Heavy Ion Collider. The measurements cover pseudorapidity, eta, in the range |eta| >=0.5 and >=3.7 GeV/c. The dependence on eta and p(T) is presented.
Published: 2009

47. J/ψproduction at high transverse momenta inp+pandCu+Cucollisions atsNN=200GeV

Author: V. N. Tram, P. Kurnadi, C. A. Whitten, T. J. Humanic, Feng Jin, L. Ruan, D. Arkhipkin, A. Hamed, M. R. Cosentino, J. G. Cramer, R. Corliss, A. Rose, F. Benedosso, R. Fatemi, Michael Joseph Betancourt, S. J. Lindenbaum, A. Iordanova, J. A. Vanfossen, J. W. Harris, O. G. Grebenyuk, T. G. Dedovich, P. Yepes, A. H. Tang, Vitaly Okorokov, M. Cherney, Thomas Michael Cormier, Lokesh Kumar, R.J.M. Snellings, L. C. Bland, Bernd Surrow, M. Calderon De La Barca Sanchez, O. Catu, A. Kocoloski, M. Heinz, Pawan Kumar Netrakanti, C. L. Jones, Edmundo Javier Garcia-Solis, Ascelin Gordon, Y. Fisyak, K. Kajimoto, V. Ghazikhanian, S. C. Phatak, Anju Bhasin, C. A. Gagliardi, M. Pachr, L. Kotchenda, T. S. McShane, Marek Bombara, Jana Bielcikova, Prabhat Ranjan Pujahari, J. L. Romero, D. Thein, R. P. Redwine, I. Sakrejda, G. Lin, Q. H. Xu, M. Kopytine, J. X. Zuo, M. Tokarev, R. N. Singaraju, M. J. Skoby, Frank Jm Geurts, L. Huo, A. P. Meschanin, J. M. Joseph, A. Shabetai, G. Wang, S. Baumgart, E. Finch, Y. Yang, M. Zawisza, H. M. Spinka, K. Kang, E. Elhalhuli, S. LaPointe, N. Li, Jifa Tian, X. Z. Cai, Y. Li, S. M. Guertin, L. V. Nogach, M. J. Ng, I. K. Yoo, X. L. Wang, T. D. S. Stanislaus, X. M. Sun, Matthew Walker, A. G. Knospe, V. I. Kravtsov, H. H. Wieman, A. Lebedev, D. P. Mahapatra, Z. J. Sun, R. S. Hollis, Manish Sharma, J. C. Dunlop, V. Fine, K. Yip, J. S. Wang, J. Ulery, B. Haag, Zubayer Ahammed, E. G. Judd, Jake Y. Chen, Y. J. Sun, B. D. Anderson, M. J. LeVine, R. S. Longacre, H. G. Ritter, Zebo Tang, M. Botje, Z. Chajecki, S. Kabana, N. Xu, S. Bueltmann, Y. P. Viyogi, Lee Stuart Barnby, Jaroslav Bielcik, Raghunath Sahoo, N. K. Pruthi, B. V. K. S. Potukuchi, C. Perkins, T. Peitzmann, M. R. Dutta Mazumdar, O. V. Rogachevskiy, L. K. Mangotra, R. Manweiler, G. Igo, A. V. Brandin, H. Okada, Wolfgang Korsch, P. Filip, Debasish Das, P. Pile, G. D. Westfall, J. Bouchet, T. P. Burton, C. Roy, Ross Milner, A. Gupta, P. Sorensen, Elena Bruna, S. E. Vigdor, Christian Claude Kuhn, G. Eppley, W. A. Love, D. D. Koetke, Sergey Voloshin, A. Kechechyan, Andre Mischke, J. Putschke, Madan M. Aggarwal, Fuqiang Wang, M. Krus, R. Cendejas, Petr Jákl, A. Feng, A. Ogawa, Anthony Robert Timmins, Adam Ryszard Kisiel, L. Gaillard, H. F. Chen, Thomas A. Trainor, W. R. Edwards, Y. Wang, M. Shao, G. Van Buren, William Axel Leight, F. Videbæk, E. Braidot, Y. Zhao, Jay Roberts, H. J. Crawford, G. Webb, J. Pluta, W. L. Zhan, Marcelo Gameiro Munhoz, D. J. Prindle, Frank Simon, S. S. Shi, Sukalyan Chattopadhyay, Mirko Planinic, J. Baudot, Donika Plyku, K. Krueger, Wei Xie, M. S. Ganti, M. A. Lisa, Y. N. Gorbunov, T. W. Ludlam, T. J. Hallman, L. H. Tarini, P. Chaloupka, J. M. Nelson, G. M.S. Vasconcelos, Rene Bellwied, M. Sarsour, P. Seyboth, C-Q. Li, P. Djawotho, Chitrasen Jena, V. Emelianov, A. K. Bhati, M. DePhillips, R. P. Scharenberg, Christina Markert, H. S. Matis, Y. P. Lu, Y. G. Ma, W. Peryt, Y. Pandit, R. E. Tribble, D. Keane, R. Derradi de Souza, B. I. Abelev, S. Trentalange, Michal Sumbera, A. A. P. Suaide, V. Perevoztchikov, Sunil Dogra, N. Schmitz, X. H. Shi, E. Shahaliev, W. W. Jacobs, J. Lauret, W. He, Peter Graham Jones, Gerald W Hoffmann, Tai Sakuma, D. Tlusty, S. W. Wissink, J. H. Thomas, Y. Zhang, R. Lednicky, A. M. Vander Molen, Nikola Poljak, L. Didenko, D. R. Gangadharan, Qian Yue, E. Hjort, Y. F. Wu, J. E. Draper, L. G. Efimov, R. Varma, Basanta Kumar Nandi, S. Zhang, B. Erazmus, A. Stadnik, D. Kettler, B. Biritz, Yu A. Matulenko, S. Timoshenko, Bedangadas Mohanty, Y. F. Xu, B. S. Page, D. P. Kikola, Neeraj Gupta, D. Cebra, D. J. Hofman, B. Stringfellow, J. Engelage, M. Estienne, A. M. Poskanzer, G. S. Averichev, P. Fachini, A. Geromitsos, K. S.F.F. Guimaraes, L. Liu, R. Witt, M. Wada, Premomoy Ghosh, J. Takahashi, J. M. Landgraf, W. Christie, M. Bystersky, M. C. Suarez, C-H. Lee, T. K. Nayak, M. Strikhanov, S. Mioduszewski, V. Yu Khodyrev, M. A. C. Lamont, S. B. Nurushev, S. R. Klein, T. Tarnowsky, N. L. Subba, Donald M. McDonald, B. K. Srivastava, I. M. Vasilevski, Ki-Seok Choi, W. M. Zhang, Andrey Vasiliev, H. Bichsel, Y. Zoulkarneeva, C. Zhong, O. Barannikova, D. L. Olson, G. Odyniec, J. Sandweiss, Boris Hippolyte, Q. Wang, M. J. Russcher, N. G. Minaev, A. A. Derevschikov, A. L. Trattner, Janet Elizabeth Seger, J. C. Webb, A. M. Hoffman, Jing Zhou, Guo-Liang Ma, F. Liu, Y. Panebratsev, Z. P. Zhang, A. S. Hirsch, P. M. Jacobs, P. Kravtsov, R. D. Majka, D. Grosnick, J. L. Drachenberg, V. Kouchpil, M. S. Daugherity, J. Sowinski, R. F. Clarke, J. Schambach, Z. Z. Xu, Nikita Smirnov, B. E. Bonner, O. D. Tsai, M. Elnimr, M. C. Cervantes, Sevil Salur, Xuan Zhang, Jie Liu, B. Grube, Hanna Paulina Zbroszczyk, W. Guryn, D. R. Beavis, J. Fedorisin, R. Reed, Russell Richard Betts, O. I. Mall, D. G. Underwood, J. Cheng, T. J. M. Symons, L. C. De Silva, W. J. Llope, A. Szanto de Toledo, J. Kapitan, T. Pawlak, H. Z. Huang, S. Vokal, J. Kiryluk, J. H. Chen, Rajarshi Ray, D. A. Morozov, A. Ridiger, Christine Nattrass, S. Heppelmann, Ilya Selyuzhenkov, M. J. M. Codrington, S. Margetis, M. van Leeuwen, X. Dong, S. K. Pal, Jongmin Lee, D. Staszak, T. Ljubicic, H. Caines, Sudhir Raniwala, E. P. Sichtermann, J. Balewski, Rashmi Raniwala, Claude Andre Pruneau, Sadhana Dash, T. Ullrich, R. Zoulkarneev, L. Eun, and A. Chikanian
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Star (game theory), Hadron, 01 natural sciences, Transverse plane, 0103 physical sciences, Transverse momentum, High Energy Physics::Experiment, Production (computer science), Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider
Abstract: The STAR Collaboration at the Relativistic Heavy Ion Collider presents measurements of $J/\ensuremath{\psi}\ensuremath{\rightarrow}{e}^{+}{e}^{\ensuremath{-}}$ at midrapidity and high transverse momentum (${p}_{T}g5 \mathrm{GeV}/c$) in $p+p$ and central $\mathrm{Cu}+\mathrm{Cu}$ collisions at $\sqrt{{s}_{{}_{\mathit{NN}}}}=200$ GeV. The inclusive $J/\ensuremath{\psi}$ production cross section for $\mathrm{Cu}+\mathrm{Cu}$ collisions is found to be consistent at high ${p}_{T}$ with the binary collision-scaled cross section for $p+p$ collisions. At a confidence level of $97%$, this is in contrast to a suppression of $J/\ensuremath{\psi}$ production observed at lower ${p}_{T}$. Azimuthal correlations of $J/\ensuremath{\psi}$ with charged hadrons in $p+p$ collisions provide an estimate of the contribution of $B$-hadron decays to $J/\ensuremath{\psi}$ production of $13%\ifmmode\pm\else\textpm\fi{}5%$.
Published: 2009

48. Neutral pion production inAu+Aucollisions atsNN=200GeV

Author: O. I. Mall, A. Ridiger, K. Kajimoto, S. Heppelmann, B. V.S. Potukuchi, Yu-Gang Ma, R. Fatemi, Michael Joseph Betancourt, J. L. Drachenberg, P. Fachini, I. Selyuzhenkov, K. S.F.F. Guimaraes, K. Krueger, D. D. Koetke, J. E. Draper, J. A. Vanfossen, N. Gupta, A. Feng, K. Kang, Sergey Voloshin, Christine Nattrass, Jay Roberts, Xuan Zhang, Z. Xu, G. Lin, Jie Liu, Hanna Paulina Zbroszczyk, W. He, M. Cherney, D. R. Beavis, M. Zawisza, H. M. Spinka, Bernd Surrow, W. J. Llope, Anik Gupta, T. J. Humanic, Thomas Michael Cormier, Lokesh Kumar, H. Bichsel, M. Sarsour, G. Odyniec, Y. Zoulkarneeva, William Axel Leight, J. H. Thomas, Qian Yue, Frank Jm Geurts, E. Elhalhuli, S. R. Klein, N. L. Subba, E. Hjort, Pawan Kumar Netrakanti, R. Varma, Yu A. Matulenko, B. S. Page, P. Kurnadi, Jifa Tian, D. L. Olson, Zhenyu Zhang, D. P. Kikola, B. Grube, Q. Wang, M. J. Russcher, H. Z. Huang, S. Vokal, M. R. Cosentino, B. Stringfellow, T. S. McShane, D. Kettler, A. A. Derevschikov, J. C. Dunlop, Haiyan Wang, F. Benedosso, C. A. Gagliardi, M. Pachr, G. S. Averichev, S. Baumgart, D. Thein, J. Engelage, J. Kiryluk, Matthew Walker, X. Z. Cai, J. Baudot, M. Wada, S. Bueltmann, Zubayer Ahammed, Jana Bielcikova, B. Haag, T. G. Dedovich, W. Guryn, D. A. Morozov, M. J. LeVine, L. Kotchenda, M. Heinz, A. Geromitsos, Y. J. Sun, Lee Stuart Barnby, T. Sakuma, S. C. Phatak, M. Kopytine, V. Fine, Jaroslav Bielcik, G. Van Buren, L. H. Tarini, S. Kabana, Premomoy Ghosh, J. M. Landgraf, Y. P. Viyogi, Zebo Tang, P. Sorensen, X. H. Shi, Jing Zhou, K. Yip, P. R. Pujahari, J. S. Wang, Peter Graham Jones, O. G. Grebenyuk, V. Ghazikhanian, Bedangadas Mohanty, J. Konzer, Adam Ryszard Kisiel, M. Tokarev, T. P. Burton, M. R. Dutta Mazumdar, J. G. Cramer, T. W. Ludlam, Xing-Jiang Zhu, B. Erazmus, M. Calderon De La Barca Sanchez, Z. Chajecki, Xiangming Sun, I. Bnzarov, M. Strikhanov, Marek Bombara, J. Fedorisin, O. V. Rogachevskiy, J. M. Nelson, H. J. Crawford, Elena Bruna, C. L. Jones, Yan Li, S. M. Guertin, J. L. Romero, L. Didenko, W. A. Love, S. S. Shi, A. G. Knospe, R. Reed, C. Perkins, Jing-Han Chen, W. Peryt, Ki-Seok Choi, Alexandre Alarcon Do Passo Suaide, D. Cebra, S. Trentalange, M. Estienne, J. Sandweiss, D. P. Mahapatra, David Jonathan Hofman, I. Koralt, Madan M. Aggarwal, T. Peitzmann, H. Masui, Fuqiang Wang, R. S. Hollis, E. Finch, L. V. Nogach, M. J. Ng, Marcelo Gameiro Munhoz, T. D. S. Stanislaus, V. I. Kravtsov, G. Van Nieuwenhuizen, A. Szanto de Toledo, Yong Xu, Mateusz Andrzej Ploskon, R. Witt, D. J. Prindle, S. Mioduszewski, J. Kapitan, A. R. Timmins, S. M. Dogra, V. Yu Khodyrev, H. H. Wieman, Donika Plyku, M. Bystersky, I. Sakrejda, M. A. Lisa, Guo-Liang Ma, Peter Martin Jacobs, T. Pawlak, E. Braidot, W. L. Zhan, J. X. Zuo, Frank Simon, J. Takahashi, B. D. Anderson, A. V. Alakhverdyants, L. K. Mangotra, Donald M. McDonald, R. Manweiler, Hongfang Liu, B. K. Srivastava, M. DePhillips, Russell Richard Betts, S. B. Nurushev, D. G. Underwood, A. M. Poskanzer, Lijuan Ruan, Michal Sumbera, Boris Hippolyte, Y. Yang, S. LaPointe, N. Li, N. K. Pruthi, A. Kechechyan, Andre Mischke, M. Shao, T. J. Hallman, J. Cheng, Wei Xie, T. J. M. Symons, S. W. Wissink, A. Gordon, J. Joseph, L. C. De Silva, Nikola Poljak, M. Krus, R. Cendejas, Jorn Henning Putschke, A. V. Brandin, A. S. Hirsch, J. C. Webb, P. Kravtsov, G. M.S. Vasconcelos, Y. Pandit, W. Christie, G. Eppley, H. Okada, N. Schmitz, I. K. Yoo, E. Shahaliev, S. E. Vigdor, Christian Claude Kuhn, J. Pluta, D. R. Gangadharan, E. G. Judd, J. Sowinski, W. M. Zhang, F. Videbæk, G. Webb, Sukalyan Chattopadhyay, Andrey Vasiliev, L. C. Bland, M. S. Ganti, R. E. Tribble, Gerald W Hoffmann, Chitrasen Jena, R. S. Longacre, Yuanfang Wu, Y. P. Lu, V. Perevoztchikov, L. Liu, J. W. Harris, Debasish Das, Raghunath Sahoo, M. C. Suarez, Chang-Hwan Lee, M. A.C. Lamont, Janet Elizabeth Seger, Basanta Kumar Nandi, A. M. Hoffman, G. Igo, T. Tarnowsky, Anju Bhasin, P. Yepes, B. Biritz, R. P. Redwine, A. H. Tang, J. Bouchet, V. A. Okorokov, S. Q. Zhang, K. Kauder, A. Lebedev, C. Roy, A. Shabetai, Andrew Rose, D. Tlusty, Y. Zhao, Mirko Planinic, Q. H. Xu, J. Ulery, Z. J. Sun, Ross Milner, O. Catu, Y. N. Gorbunov, H. G. Ritter, R. N. Singaraju, A. Kocoloski, L. Huo, A. P. Meschanin, P. Chaloupka, C-Q. Li, S. Dash, F. Liu, R. P. Scharenberg, Christina Markert, Y. Fisyak, H. S. Matis, O. Barannikova, R. Bellwied, W. W. Jacobs, J. Lauret, L. Gaillard, G. Wang, R. Lednicky, P. Djawotho, R. D. Majka, P. Seyboth, E. J. Garcia-Solis, J. Y. Chen, S. Margetis, R. F. Clarke, J. Schambach, A. Chikanian, M. J. Skoby, V. N. Tram, Sergey Timoshenko, R. Derradi de Souza, B. I. Abelev, Wolfgang Korsch, M. J. M. Codrington, D. Arkhipkin, A. Hamed, A. Iordanova, M. S. Daugherity, Xuan Wang, A. Ogawa, H. F. Chen, Thomas A. Trainor, N. Xu, P. Filip, S. Sakai, P. Pile, G. D. Westfall, Petr Jákl, C. A. Whitten, Feng Jin, X. L. Wang, C. Zhong, X. Dong, R. Corliss, S. K. Pal, B. E. Bonner, E. P. Sichtermann, J. Balewski, Rashmi Raniwala, O. D. Tsai, Claude Andre Pruneau, S. J. Lindenbaum, T. Ullrich, R. Zoulkarneev, L. Eun, Jongmin Lee, R. L. Ray, D. Staszak, M. Elnimr, M. C. Cervantes, T. Ljubicic, H. Caines, Sudhir Raniwala, M. Sharma, N. G. Minaev, Sevil Salur, Y. Wang, A. K. Bhati, D. Keane, Nikolai Smirnov, L. G. Efimov, T. K. Nayak, Y. Panebratsev, D. Grosnick, V. Kouchpil, and Yi Zhang
Subjects: Physics, Quark, Nuclear and High Energy Physics, Particle physics, Time projection chamber, Meson, 010308 nuclear & particles physics, Nuclear Theory, Parton, Electron, 01 natural sciences, Spectral line, Nuclear physics, Pion, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider
Abstract: The results of midrapidity (0 < y < 0.8) neutral pion spectra over an extended transverse momentum range (1 < p(T) < 12 GeV/c) in root s(NN) = 200 GeV Au + Au collisions, measured by the STAR experiment, are presented. The neutral pions are reconstructed from photons measured either by the STAR Barrel Electro-Magnetic Calorimeter or by the Time Projection Chamber via tracking of conversion electron-positron pairs. Our measurements are compared to previously published pi(+/-) and pi(0) results. The nuclear modification factors R(CP) and R(AA) of pi(0) are also presented as a function of p(T). In the most central Au + Au collisions, the binary collision scaled pi(0) yield at high p(T) is suppressed by a factor of about 5 compared to the expectation from the yield of p + p collisions. Such a large suppression is in agreement with previous observations for light quark mesons and is consistent with the scenario that partons suffer considerable energy loss in the dense medium formed in central nucleus-nucleus collisions at the Relativistic Heavy Ion Collider.
Published: 2009

49. Growth of Long Range Forward-Backward Multiplicity Correlations with Centrality inAu+AuCollisions atsNN=200 GeV

Author: B. I. Abelev, M. M. Aggarwal, Z. Ahammed, B. D. Anderson, D. Arkhipkin, G. S. Averichev, J. Balewski, O. Barannikova, L. S. Barnby, J. Baudot, S. Baumgart, D. R. Beavis, R. Bellwied, F. Benedosso, M. J. Betancourt, R. R. Betts, A. Bhasin, A. K. Bhati, H. Bichsel, J. Bielcik, J. Bielcikova, B. Biritz, L. C. Bland, M. Bombara, B. E. Bonner, M. Botje, J. Bouchet, E. Braidot, A. V. Brandin, E. Bruna, S. Bueltmann, T. P. Burton, M. Bystersky, X. Z. Cai, H. Caines, M. Calderón de la Barca Sánchez, O. Catu, D. Cebra, R. Cendejas, M. C. Cervantes, Z. Chajecki, P. Chaloupka, S. Chattopadhyay, H. F. Chen, J. H. Chen, J. Y. Chen, J. Cheng, M. Cherney, A. Chikanian, K. E. Choi, W. Christie, R. F. Clarke, M. J. M. Codrington, R. Corliss, T. M. Cormier, M. R. Cosentino, J. G. Cramer, H. J. Crawford, D. Das, S. Dash, M. Daugherity, L. C. De Silva, T. G. Dedovich, M. DePhillips, A. A. Derevschikov, R. Derradi de Souza, L. Didenko, P. Djawotho, S. M. Dogra, X. Dong, J. L. Drachenberg, J. E. Draper, F. Du, J. C. Dunlop, M. R. Dutta Mazumdar, W. R. Edwards, L. G. Efimov, E. Elhalhuli, M. Elnimr, V. Emelianov, J. Engelage, G. Eppley, B. Erazmus, M. Estienne, L. Eun, P. Fachini, R. Fatemi, J. Fedorisin, A. Feng, P. Filip, E. Finch, V. Fine, Y. Fisyak, C. A. Gagliardi, L. Gaillard, D. R. Gangadharan, M. S. Ganti, E. J. Garcia-Solis, A. Geromitsos, F. Geurts, V. Ghazikhanian, P. Ghosh, Y. N. Gorbunov, A. Gordon, O. Grebenyuk, D. Grosnick, B. Grube, S. M. Guertin, K. S. F. F. Guimaraes, A. Gupta, N. Gupta, W. Guryn, B. Haag, T. J. Hallman, A. Hamed, J. W. Harris, W. He, M. Heinz, S. Heppelmann, B. Hippolyte, A. Hirsch, E. Hjort, A. M. Hoffman, G. W. Hoffmann, D. J. Hofman, R. S. Hollis, H. Z. Huang, T. J. Humanic, L. Huo, G. Igo, A. Iordanova, P. Jacobs, W. W. Jacobs, P. Jakl, C. Jena, F. Jin, C. L. Jones, P. G. Jones, J. Joseph, E. G. Judd, S. Kabana, K. Kajimoto, K. Kang, J. Kapitan, D. Keane, A. Kechechyan, D. Kettler, V. Yu. Khodyrev, D. P. Kikola, J. Kiryluk, A. Kisiel, A. G. Knospe, A. Kocoloski, D. D. Koetke, M. Kopytine, W. Korsch, L. Kotchenda, V. Kouchpil, P. Kravtsov, V. I. Kravtsov, K. Krueger, M. Krus, C. Kuhn, L. Kumar, P. Kurnadi, M. A. C. Lamont, J. M. Landgraf, S. LaPointe, J. Lauret, A. Lebedev, R. Lednicky, C-H. Lee, J. H. Lee, W. Leight, M. J. LeVine, N. Li, C. Li, Y. Li, G. Lin, S. J. Lindenbaum, M. A. Lisa, F. Liu, J. Liu, L. Liu, T. Ljubicic, W. J. Llope, R. S. Longacre, W. A. Love, Y. Lu, T. Ludlam, G. L. Ma, Y. G. Ma, D. P. Mahapatra, R. Majka, O. I. Mall, L. K. Mangotra, R. Manweiler, S. Margetis, C. Markert, H. S. Matis, Yu. A. Matulenko, T. S. McShane, A. Meschanin, R. Milner, N. G. Minaev, S. Mioduszewski, A. Mischke, J. Mitchell, B. Mohanty, D. A. Morozov, M. G. Munhoz, B. K. Nandi, C. Nattrass, T. K. Nayak, J. M. Nelson, P. K. Netrakanti, M. J. Ng, L. V. Nogach, S. B. Nurushev, G. Odyniec, A. Ogawa, H. Okada, V. Okorokov, D. Olson, M. Pachr, B. S. Page, S. K. Pal, Y. Pandit, Y. Panebratsev, T. Pawlak, T. Peitzmann, V. Perevoztchikov, C. Perkins, W. Peryt, S. C. Phatak, M. Planinic, J. Pluta, N. Poljak, A. M. Poskanzer, B. V. K. S. Potukuchi, D. Prindle, C. Pruneau, N. K. Pruthi, P. R. Pujahari, J. Putschke, R. Raniwala, S. Raniwala, R. Redwine, R. Reed, A. Ridiger, H. G. Ritter, J. B. Roberts, O. V. Rogachevskiy, J. L. Romero, A. Rose, C. Roy, L. Ruan, M. J. Russcher, R. Sahoo, I. Sakrejda, T. Sakuma, S. Salur, J. Sandweiss, M. Sarsour, J. Schambach, R. P. Scharenberg, N. Schmitz, J. Seger, I. Selyuzhenkov, P. Seyboth, A. Shabetai, E. Shahaliev, M. Shao, M. Sharma, S. S. Shi, X-H. Shi, E. P. Sichtermann, F. Simon, R. N. Singaraju, M. J. Skoby, N. Smirnov, R. Snellings, P. Sorensen, J. Sowinski, H. M. Spinka, B. Srivastava, A. Stadnik, T. D. S. Stanislaus, D. Staszak, M. Strikhanov, B. Stringfellow, A. A. P. Suaide, M. C. Suarez, N. L. Subba, M. Sumbera, X. M. Sun, Y. Sun, Z. Sun, B. Surrow, T. J. M. Symons, A. Szanto de Toledo, J. Takahashi, A. H. Tang, Z. Tang, T. Tarnowsky, D. Thein, J. H. Thomas, J. Tian, A. R. Timmins, S. Timoshenko, D. Tlusty, M. Tokarev, V. N. Tram, A. L. Trattner, S. Trentalange, R. E. Tribble, O. D. Tsai, J. Ulery, T. Ullrich, D. G. Underwood, G. Van Buren, M. van Leeuwen, A. M. Vander Molen, J. A. Vanfossen, R. Varma, G. M. S. Vasconcelos, I. M. Vasilevski, A. N. Vasiliev, F. Videbaek, S. E. Vigdor, Y. P. Viyogi, S. Vokal, S. A. Voloshin, M. Wada, M. Walker, F. Wang, G. Wang, J. S. Wang, Q. Wang, X. Wang, X. L. Wang, Y. Wang, G. Webb, J. C. Webb, G. D. Westfall, C. Whitten, H. Wieman, S. W. Wissink, R. Witt, Y. Wu, W. Xie, N. Xu, Q. H. Xu, Y. Xu, Z. Xu, Y. Yang, P. Yepes, I-K. Yoo, Q. Yue, M. Zawisza, H. Zbroszczyk, W. Zhan, S. Zhang, W. M. Zhang, X. P. Zhang, Y. Zhang, Z. P. Zhang, Y. Zhao, C. Zhong, J. Zhou, R. Zoulkarneev, Y. Zoulkarneeva, and J. X. Zuo
Subjects: Physics, Range (particle radiation), 010308 nuclear & particles physics, General Physics and Astronomy, Multiplicity (mathematics), Forward backward, Parton, 01 natural sciences, Color-glass condensate, Nuclear physics, 0103 physical sciences, Nuclear Experiment, 010306 general physics, Centrality, STAR detector
Abstract: Forward-backward multiplicity correlation strengths have been measured for the first time with the STAR detector for Au+Au and $\textit{p+p}$ collisions at $\sqrt{s_{NN}}$ = 200 GeV. Strong short and long range correlations are seen in central (0-10%) Au+Au collisions. The magnitude of these correlations decrease with decreasing centrality until only short range correlations are observed in 40-50% Au+Au collisions. The results are in agreement with predictions from the Dual Parton and Color Glass Condensate models.
Published: 2009

50. Azimuthal charged-particle correlations and possible local strong parity violation

Author: B. Erazmus, Neeraj Gupta, D. Cebra, S. Trentalange, M. Estienne, Marcelo Gameiro Munhoz, D. J. Prindle, H. Bichsel, Y. Zoulkarneeva, Donika Plyku, Q. Wang, M. J. Russcher, M. A. Lisa, Jing Zhou, L. Kotchenda, A. Ridiger, T. Sakuma, S. Heppelmann, K. Yip, J. S. Wang, D. D. Koetke, Guo-Liang Ma, S. M. Guertin, Alexandre Alarcon Do Passo Suaide, Yannis K. Semertzidis, P. Filip, Sergei A. Voloshin, E. Shahaliev, G. Lin, G. Wang, P. Seyboth, E. J. Garcia-Solis, D. P. Mahapatra, J. C. Webb, R. S. Hollis, S. Sakai, Jorn Henning Putschke, A. V. Brandin, P. Pile, Anik Gupta, P. Kravtsov, H. Okada, S. Vokal, G. Eppley, R. Derradi de Souza, B. I. Abelev, Petr Jákl, J. E. Draper, M. J. Skoby, Frank Jm Geurts, D. G. Underwood, J. Pluta, E. Elhalhuli, G. Van Buren, S. S. Shi, Jifa Tian, Jianping Cheng, D. Thein, J. Sowinski, Christine Nattrass, K. Kang, C-Q. Li, M. J. M. Codrington, B. E. Bonner, O. D. Tsai, S. Bueltmann, T. W. Ludlam, J. M. Nelson, Yan Li, J. Kiryluk, N. Schmitz, W. J. Llope, B. Grube, P. Chung, R. E. Tribble, E. G. Judd, M. Kopytine, I. Sakrejda, M. Sharma, J. G. Cramer, M. Elnimr, M. C. Cervantes, J. Sandweiss, Subhasis Chattopadhyay, R. P. Scharenberg, H. S. Matis, H. M. Spinka, B. Haag, Jing-Han Chen, W. Peryt, W. Guryn, Elena Bruna, J. Joseph, Gerald W Hoffmann, G. M.S. Vasconcelos, J. X. Zuo, D. A. Morozov, Xiang Sun, Z. J. Sun, Y. Pandit, Zebo Tang, J. Engelage, P. R. Pujahari, Xuan Zhang, Jie Liu, R. Lednicky, O. G. Grebenyuk, T. D. S. Stanislaus, P. Djawotho, L. G. Efimov, L. H. Tarini, F. Videbæk, V. Ghazikhanian, Z. Chajecki, C. A. Whitten, Feng Jin, Hanna Paulina Zbroszczyk, T. P. Burton, Sevil Salur, Y. Wang, G. Webb, A. Geromitsos, H. H. Wieman, Y. Yang, J. Fedorisin, D. R. Beavis, Premomoy Ghosh, F. Liu, A. Bridgeman, T. S. McShane, Haiyan Wang, T. Ullrich, R. Corliss, Zhongbin Xu, Y. Panebratsev, D. Grosnick, A. G. Knospe, L. K. Mangotra, V. Kouchpil, I. K. Yoo, Jana Bielcikova, L. V. Nogach, Y. Fisyak, M. S. Ganti, C. Perkins, X. Z. Cai, S. J. Lindenbaum, A. Ogawa, S. Baumgart, S. LaPointe, N. Li, D. Tlusty, A. Gordon, R. Manweiler, Mirko Planinic, T. Peitzmann, Yi Zhang, J. Konzer, B. D. Anderson, E. Finch, O. I. Mall, W. Christie, Matthew Walker, Rolf K. Reed, Chitrasen Jena, H. Caines, A. Szanto de Toledo, J. Kapitan, Ki-Seok Choi, N. K. Pruthi, A. R. Timmins, D. R. Gangadharan, S. M. Dogra, David Jonathan Hofman, William Jacobs, Y. N. Gorbunov, Christina Markert, Y. P. Lu, V. Perevoztchikov, E. Hjort, Y. F. Wu, H. Masui, Y. J. Sun, B. V.K.S. Potukuchi, Yinina Ma, A. Hirsch, M. Calderón De La BarcaSánchez, A. Kechechyan, Andre Mischke, T. Pawlak, I. Bnzarov, Thomas Humanic, J. M. Landgraf, Peter Martin Jacobs, Bedangadas Mohanty, S. Kabana, J. Takahashi, A. K. Bhati, D. Keane, A. V. Alakhverdyants, M. Krus, R. Cendejas, Nikolai Smirnov, Sergey Timoshenko, J. Lauret, X. R. Wang, Y. P. Viyogi, B. Srivastava, P. Fachini, C-H. Lee, T. K. Nayak, Russell Richard Betts, K. S.F.F. Guimaraes, Wolfgang Korsch, B. Stringfellow, Jongmin Lee, Lijuan Ruan, V. Dzhordzhadze, R. L. Ray, M. Wada, Gary Westfall, Xiaofeng Zhu, Qian Yue, M. DePhillips, J. W. Harris, S. B. Nurushev, M. Shao, Michal Sumbera, Hank Crawford, R. Varma, D. Staszak, T. J. Hallman, T. Ljubicic, T. J. M. Symons, Yu A. Matulenko, B. S. Page, P. Sorensen, X. H. Shi, S. W. Wissink, D. P. Kikola, L. C. De Silva, P. Yepes, Peter Graham Jones, Sudhir Raniwala, K. Kajimoto, Nikola Poljak, Saskia Mioduszewski, A. Lebedev, O. Catu, J. Schambach, S. Dash, N. G. Minaev, Anju Bhasin, L. Didenko, R. P. Redwine, X. L. Wang, J. Seele, C. Zhong, S. Q. Zhang, R. S. Longacre, X. Dong, Ross Milner, E. P. Sichtermann, J. Balewski, Rashmi Raniwala, Claude Andre Pruneau, Hengchang Liu, M. Zawisza, R. D. Majka, William Axel Leight, R. Zoulkarneev, A. M. Poskanzer, R. F. Clarke, L. Eun, W. M. Zhang, Andrey Vasiliev, Nu Xu, A. M. Hoffman, S. R. Klein, N. L. Subba, D. L. Olson, J. H. Thomas, A. A. Derevschikov, D. Kettler, G. S. Averichev, R. Fatemi, Michael Joseph Betancourt, H. G. Ritter, K. Krueger, J. L. Drachenberg, J. A. Vanfossen, M. Strikhanov, J. L. Romero, A. Feng, M. Cherney, Thomas Michael Cormier, Lokesh Kumar, Jay Roberts, A. H. Tang, Mikhail Tokarev, Ermes Braidot, J. C. Dunlop, Madan M. Aggarwal, Adam Ryszard Kisiel, Fuqiang Wang, Zubayer Ahammed, M. J. LeVine, Yong Xu, W. L. Zhan, Frank Simon, Mateusz Andrzej Ploskon, R. Witt, M. Heinz, Lee Stuart Barnby, Jaroslav Bielcik, V. Yu Khodyrev, Subrata Pal, Donald M. McDonald, M. R. Dutta Mazumdar, O. V. Rogachevskiy, W. Xie, W. A. Love, I. Selyuzhenkov, Bernd Surrow, Pawan Kumar Netrakanti, G. Odyniec, C. A. Gagliardi, M. Pachr, Q. H. Xu, R. N. Singaraju, L. Huo, A. P. Meschanin, Debasish Das, Raghunath Sahoo, M. A.C. Lamont, G. Igo, J. Bouchet, K. Kauder, Andrew Rose, Y. Zhao, Basanta Kumar Nandi, T. Tarnowsky, B. Biritz, V. A. Okorokov, A. Chikanian, V. N. Tram, V. Fine, Jake Y. Chen, D. Arkhipkin, A. Hamed, I. Koralt, M. J. Ng, V. I. Kravtsov, G. Van Nieuwenhuizen, P. Kurnadi, A. Iordanova, Zhenyu Zhang, M. R. Cosentino, F. Benedosso, C. Roy, T. G. Dedovich, S. C. Phatak, P. Chaloupka, S. Margetis, H. F. Chen, J. Seger, M. S. Daugherity, L. C. Bland, L. Liu, C. L. Jones, M. C. Suarez, A. Kocoloski, J. Ulery, H. Z. Huang, O. Barannikova, and R. Bellwied
Subjects: Quark, Particle physics, QCD vacuum, Hadron, General Physics and Astronomy, FOS: Physical sciences, 01 natural sciences, Nuclear physics, 0103 physical sciences, Nuclear Experiment (nucl-ex), 010306 general physics, Nuclear Experiment, Nuclear Collisions, parity violation, Physics, Quantum chromodynamics, 010308 nuclear & particles physics, Heavy-Ion Collisions, Observable, Fermion, NATURAL SCIENCES. Physics, Charged particle, PRIRODNE ZNANOSTI. Fizika, Hot Qcd, High Energy Physics::Experiment, charged hadrons, STAR detector
Abstract: Parity-odd domains, corresponding to non-trivial topological solutions of the QCD vacuum, might be created during relativistic heavy ion collisions. These domains are predicted to lead to charge separation of quarks along the system's orbital momentum axis. We investigate a three particle azimuthal correlator which is a \P even observable, but directly sensitive to the charge separation effect. We report measurements of charged hadrons near center-of-mass rapidity with this observable in Au+Au and Cu+Cu collisions at $\sqrt{s_{NN}}$=200 GeV using the STAR detector. A signal consistent with several expectations from the theory is detected. We discuss possible contributions from other effects that are not related to parity violation., Comment: version as published in Physical Review Letters. Figure 3 from earlier versions has been removed to add room for new Figure 1
Published: 2009

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