Author: "W. Witzke" - Searchworks@Jio Institute Digital Library Search Results

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54 results on '"W. Witzke"'

1. 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

2. Neuropsychological Profiles of Written Expression Learning Disabilities Determined by Concordance-Discordance Model Criteria

Author: Melanie E. Fenwick, Kim R. Fitzer, Justin W. Witzke, James B. Hale, Daniel C. Miller, Gina L. Harrison, Hanna A. Kubas, Denise E. Maricle, and Sarah J. Macoun
Subjects: Male, 050103 clinical psychology, Adolescent, Writing, Concordance, Specific learning disability, Academic achievement, Neuropsychological Tests, Developmental psychology, Executive Function, Fluency, Developmental and Educational Psychology, medicine, Humans, Learning, 0501 psychology and cognitive sciences, Child, Psychomotor learning, Schools, Learning Disabilities, 05 social sciences, Neuropsychology, 050301 education, Achievement, Spelling, Neuropsychology and Physiological Psychology, Learning disability, Female, medicine.symptom, Psychology, 0503 education
Abstract: Children with specific learning disabilities (SLD) have disparate neuropsychological processing deficits that interfere with academic achievement in spelling, writing fluency, and/or written expression (WE). Although there are multiple potential causes of WE SLD, there is a paucity of research exploring this critical academic skill from a neuropsychological perspective. This study examined the neuropsychological profiles of WE SLD subtypes defined using the concordance-discordance model (C-DM) of SLD identification. Participants were drawn from a sample of 283 children (194 boys, 89 girls) aged 6 years to 16 years old (M(age) = 9.58 years, SD = 2.29 years) referred for comprehensive neuropsychological evaluations in school settings and subsequently selected based on C-DM determined spelling, writing fluency, and WE SLD. WE SLD subtypes differed on several psychomotor, memory, and executive function measures (F range = 2.48-5.07, p range = .049 to
Published: 2015

3. The STAR Collaboration

Author: L. Adamczyk, G. Agakishiev, M.M. Aggarwal, Z. Ahammed, A.V. Alakhverdyants, I. Alekseev, J. Alford, B.D. Anderson, C.D. Anson, D. Arkhipkin, E. Aschenauer, G.S. Averichev, J. Balewski, A. Banerjee, Z. Barnovska, D.R. Beavis, R. Bellwied, M.J. Betancourt, R.R. Betts, A. Bhasin, A.K. Bhati, H. Bichsel, J. Bielcik, J. Bielcikova, L.C. Bland, I.G. Bordyuzhin, W. Borowski, J. Bouchet, A.V. Brandin, S.G. Brovko, E. Bruna, S. Bültmann, I. Bunzarov, T.P. Burton, J. Butterworth, X.Z. Cai, H. Caines, M. Calderón de la Barca Sánchez, D. Cebra, R. Cendejas, M.C. Cervantes, P. Chaloupka, Z. Chang, S. Chattopadhyay, H.F. Chen, J.H. Chen, J.Y. Chen, L. Chen, J. Cheng, M. Cherney, A. Chikanian, W. Christie, P. Chung, J. Chwastowski, M.J.M. Codrington, R. Corliss, J.G. Cramer, H.J. Crawford, X. Cui, S. Das, A. Davila Leyva, L.C. De Silva, R.R. Debbe, T.G. Dedovich, J. Deng, R. Derradi de Souza, S. Dhamija, L. Didenko, F. Ding, A. Dion, P. Djawotho, X. Dong, J.L. Drachenberg, J.E. Draper, C.M. Du, L.E. Dunkelberger, J.C. Dunlop, L.G. Efimov, M. Elnimr, J. Engelage, G. Eppley, L. Eun, O. Evdokimov, R. Fatemi, S. Fazio, J. Fedorisin, R.G. Fersch, P. Filip, E. Finch, Y. Fisyak, C.A. Gagliardi, D.R. Gangadharan, F. Geurts, A. Gibson, S. Gliske, Y.N. Gorbunov, O.G. Grebenyuk, D. Grosnick, S. Gupta, W. Guryn, B. Haag, O. Hajkova, A. Hamed, L-X. Han, J.W. Harris, J.P. Hays-Wehle, S. Heppelmann, A. Hirsch, G.W. Hoffmann, D.J. Hofman, S. Horvat, B. Huang, H.Z. Huang, P. Huck, T.J. Humanic, L. Huo, G. Igo, W.W. Jacobs, C. Jena, J. Joseph, E.G. Judd, S. Kabana, K. Kang, J. Kapitan, K. Kauder, H.W. Ke, D. Keane, A. Kechechyan, A. Kesich, D.P. Kikola, J. Kiryluk, I. Kisel, A. Kisiel, V. Kizka, S.R. Klein, D.D. Koetke, T. Kollegger, J. Konzer, I. Koralt, L. Koroleva, W. Korsch, L. Kotchenda, P. Kravtsov, K. Krueger, I. Kulakov, L. Kumar, 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, W. Li, X. Li, Y. Li, Z.M. Li, L.M. Lima, M.A. Lisa, F. Liu, T. Ljubicic, W.J. Llope, R.S. Longacre, Y. Lu, X. Luo, A. Luszczak, G.L. Ma, Y.G. Ma, D.M.M.D. Madagodagettige Don, D.P. Mahapatra, R. Majka, O.I. Mall, S. Margetis, C. Markert, H. Masui, H.S. Matis, D. McDonald, T.S. McShane, S. Mioduszewski, M.K. Mitrovski, Y. Mohammed, B. Mohanty, M.M. Mondal, B. Morozov, M.G. Munhoz, M.K. Mustafa, M. Naglis, B.K. Nandi, Md. Nasim, T.K. Nayak, J.M. Nelson, L.V. Nogach, J. Novak, G. Odyniec, A. Ogawa, K. Oh, A. Ohlson, V. Okorokov, E.W. Oldag, R.A.N. Oliveira, D. Olson, P. Ostrowski, M. Pachr, B.S. Page, S.K. Pal, Y.X. Pan, Y. Pandit, Y. Panebratsev, T. Pawlak, B. Pawlik, H. Pei, C. Perkins, W. Peryt, P. Pile, M. Planinic, J. Pluta, D. Plyku, N. Poljak, J. Porter, A.M. Poskanzer, C.B. Powell, C. Pruneau, N.K. Pruthi, M. Przybycien, P.R. Pujahari, J. Putschke, H. Qiu, R. Raniwala, S. Raniwala, R.L. Ray, R. Redwine, R. Reed, C.K. Riley, H.G. Ritter, J.B. Roberts, O.V. Rogachevskiy, J.L. Romero, J.F. Ross, L. Ruan, J. Rusnak, N.R. Sahoo, P.K. Sahu, I. Sakrejda, S. Salur, A. Sandacz, J. Sandweiss, E. Sangaline, A. Sarkar, J. Schambach, R.P. Scharenberg, A.M. Schmah, B. Schmidke, N. Schmitz, T.R. Schuster, J. Seele, J. Seger, P. Seyboth, N. Shah, E. Shahaliev, M. Shao, B. Sharma, M. Sharma, S.S. Shi, Q.Y. Shou, E.P. Sichtermann, R.N. Singaraju, M.J. Skoby, D. Smirnov, N. Smirnov, D. Solanki, P. Sorensen, U.G. deSouza, H.M. Spinka, B. Srivastava, T.D.S. Stanislaus, S.G. Steadman, J.R. Stevens, R. Stock, M. Strikhanov, B. Stringfellow, A.A.P. Suaide, M.C. Suarez, 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, B.A. Trzeciak, O.D. Tsai, J. Turnau, T. Ullrich, D.G. Underwood, G. Van Buren, G. van Nieuwenhuizen, J.A. Vanfossen, R. Varma, G.M.S. Vasconcelos, F. Videbæk, Y.P. Viyogi, S. Vokal, S.A. Voloshin, A. Vossen, M. Wada, 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, K. Xin, H. Xu, N. Xu, Q.H. Xu, W. Xu, Y. Xu, Z. Xu, L. Xue, Y. Yang, P. Yepes, Y. Yi, K. Yip, I-K. Yoo, M. Zawisza, H. Zbroszczyk, J.B. Zhang, S. Zhang, W.M. Zhang, X.P. Zhang, Y. Zhang, Z.P. Zhang, F. Zhao, J. Zhao, C. Zhong, X. Zhu, Y.H. Zhu, Y. Zoulkarneeva, and M. Zyzak
Subjects: Physics, Nuclear and High Energy Physics, Astronomy, Star (graph theory)
Published: 2013

4. J/ψ production at high transverse momenta in p+p and Au + Au collisions at sNN=200 GeV

Author: L. Adamczyk, G. Agakishiev, M.M. Aggarwal, Z. Ahammed, A.V. Alakhverdyants, I. Alekseev, J. Alford, C.D. Anson, D. Arkhipkin, E. Aschenauer, G.S. Averichev, J. Balewski, A. Banerjee, Z. Barnovska, D.R. Beavis, R. Bellwied, M.J. Betancourt, R.R. Betts, A. Bhasin, A.K. Bhati, H. Bichsel, J. Bielcik, J. Bielcikova, L.C. Bland, I.G. Bordyuzhin, W. Borowski, J. Bouchet, A.V. Brandin, S.G. Brovko, E. Bruna, S. Bültmann, I. Bunzarov, T.P. Burton, J. Butterworth, X.Z. Cai, H. Caines, M. Calderón de la Barca Sánchez, D. Cebra, R. Cendejas, M.C. Cervantes, P. Chaloupka, Z. Chang, S. Chattopadhyay, H.F. Chen, J.H. Chen, J.Y. Chen, L. Chen, J. Cheng, M. Cherney, A. Chikanian, W. Christie, P. Chung, J. Chwastowski, M.J.M. Codrington, R. Corliss, J.G. Cramer, H.J. Crawford, X. Cui, S. Das, A. Davila Leyva, L.C. De Silva, R.R. Debbe, T.G. Dedovich, J. Deng, R. Derradi de Souza, S. Dhamija, L. Didenko, F. Ding, A. Dion, P. Djawotho, X. Dong, J.L. Drachenberg, J.E. Draper, C.M. Du, L.E. Dunkelberger, J.C. Dunlop, L.G. Efimov, M. Elnimr, J. Engelage, G. Eppley, L. Eun, O. Evdokimov, R. Fatemi, S. Fazio, J. Fedorisin, R.G. Fersch, P. Filip, E. Finch, Y. Fisyak, C.A. Gagliardi, D.R. Gangadharan, F. Geurts, A. Gibson, S. Gliske, Y.N. Gorbunov, O.G. Grebenyuk, D. Grosnick, S. Gupta, W. Guryn, B. Haag, O. Hajkova, A. Hamed, L.-X. Han, J.W. Harris, J.P. Hays-Wehle, S. Heppelmann, A. Hirsch, G.W. Hoffmann, D.J. Hofman, S. Horvat, B. Huang, H.Z. Huang, P. Huck, T.J. Humanic, L. Huo, G. Igo, W.W. Jacobs, C. Jena, E.G. Judd, S. Kabana, K. Kang, J. Kapitan, K. Kauder, H.W. Ke, D. Keane, A. Kechechyan, A. Kesich, D.P. Kikola, J. Kiryluk, I. Kisel, A. Kisiel, V. Kizka, S.R. Klein, D.D. Koetke, T. Kollegger, J. Konzer, I. Koralt, L. Koroleva, W. Korsch, L. Kotchenda, P. Kravtsov, K. Krueger, I. Kulakov, L. Kumar, 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, W. Li, X. Li, Y. Li, Z.M. Li, L.M. Lima, M.A. Lisa, F. Liu, T. Ljubicic, W.J. Llope, R.S. Longacre, Y. Lu, X. Luo, A. Luszczak, G.L. Ma, Y.G. Ma, D.M.M.D. Madagodagettige Don, D.P. Mahapatra, R. Majka, O.I. Mall, S. Margetis, C. Markert, H. Masui, H.S. Matis, D. McDonald, T.S. McShane, S. Mioduszewski, M.K. Mitrovski, Y. Mohammed, B. Mohanty, M.M. Mondal, B. Morozov, M.G. Munhoz, M.K. Mustafa, M. Naglis, B.K. Nandi, Md. Nasim, T.K. Nayak, J.M. Nelson, L.V. Nogach, J. Novak, G. Odyniec, A. Ogawa, K. Oh, A. Ohlson, V. Okorokov, E.W. Oldag, R.A.N. Oliveira, D. Olson, P. Ostrowski, M. Pachr, B.S. Page, S.K. Pal, Y.X. Pan, Y. Pandit, Y. Panebratsev, T. Pawlak, B. Pawlik, H. Pei, C. Perkins, W. Peryt, P. Pile, M. Planinic, J. Pluta, D. Plyku, N. Poljak, J. Porter, A.M. Poskanzer, C.B. Powell, C. Pruneau, N.K. Pruthi, M. Przybycien, P.R. Pujahari, J. Putschke, H. Qiu, R. Raniwala, S. Raniwala, R.L. Ray, R. Redwine, R. Reed, C.K. Riley, H.G. Ritter, J.B. Roberts, O.V. Rogachevskiy, J.L. Romero, J.F. Ross, L. Ruan, J. Rusnak, N.R. Sahoo, P.K. Sahu, I. Sakrejda, S. Salur, A. Sandacz, J. Sandweiss, E. Sangaline, A. Sarkar, J. Schambach, R.P. Scharenberg, A.M. Schmah, B. Schmidke, N. Schmitz, T.R. Schuster, J. Seele, J. Seger, P. Seyboth, N. Shah, E. Shahaliev, M. Shao, B. Sharma, M. Sharma, S.S. Shi, Q.Y. Shou, E.P. Sichtermann, R.N. Singaraju, M.J. Skoby, D. Smirnov, N. Smirnov, D. Solanki, P. Sorensen, U.G. deSouza, H.M. Spinka, B. Srivastava, T.D.S. Stanislaus, S.G. Steadman, J.R. Stevens, R. Stock, M. Strikhanov, B. Stringfellow, A.A.P. Suaide, M.C. Suarez, 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, B.A. Trzeciak, O.D. Tsai, J. Turnau, T. Ullrich, D.G. Underwood, G. Van Buren, G. van Nieuwenhuizen, J.A. Vanfossen, R. Varma, G.M.S. Vasconcelos, F. Videbæk, Y.P. Viyogi, S. Vokal, S.A. Voloshin, A. Vossen, M. Wada, 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, K. Xin, H. Xu, N. Xu, Q.H. Xu, W. Xu, Y. Xu, Z. Xu, L. Xue, Y. Yang, P. Yepes, Y. Yi, K. Yip, I.-K. Yoo, M. Zawisza, H. Zbroszczyk, J.B. Zhang, S. Zhang, X.P. Zhang, Y. Zhang, Z.P. Zhang, F. Zhao, J. Zhao, C. Zhong, X. Zhu, Y.H. Zhu, Y. Zoulkarneeva, and M. Zyzak
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Transverse plane, Particle physics, Production (computer science), Nuclear Experiment, Quarkonium, Spectral line
Abstract: We report J / ψ spectra for transverse momenta p T > 5 GeV / c at mid-rapidity in p + p and Au + Au collisions at s NN = 200 GeV . The inclusive J / ψ spectrum and the extracted B-hadron feed-down are compared to models incorporating different production mechanisms. We observe significant suppression of the J / ψ yields for p T > 5 GeV / c in 0–30% central Au + Au collisions relative to the p + p yield scaled by the number of binary nucleon–nucleon collisions in Au + Au collisions. In 30–60% mid-central collisions, no such suppression is observed. The level of suppression is consistently less than that of high- p T π ± and low- p T J / ψ at RHIC and high- p T J / ψ at the LHC.
Published: 2013

5. Single spin asymmetry AN in polarized proton–proton elastic scattering at s=200 GeV

Author: L. Adamczyk, G. Agakishiev, M.M. Aggarwal, Z. Ahammed, A.V. Alakhverdyants, I. Alekseev, J. Alford, C.D. Anson, D. Arkhipkin, E. Aschenauer, G.S. Averichev, J. Balewski, A. Banerjee, Z. Barnovska, D.R. Beavis, R. Bellwied, M.J. Betancourt, R.R. Betts, A. Bhasin, A.K. Bhati, H. Bichsel, J. Bielcik, J. Bielcikova, L.C. Bland, I.G. Bordyuzhin, W. Borowski, J. Bouchet, A.V. Brandin, S.G. Brovko, E. Bruna, S. Bültmann, I. Bunzarov, T.P. Burton, J. Butterworth, X.Z. Cai, H. Caines, M. Calderón de la Barca Sánchez, D. Cebra, R. Cendejas, M.C. Cervantes, P. Chaloupka, Z. Chang, S. Chattopadhyay, H.F. Chen, J.H. Chen, J.Y. Chen, L. Chen, J. Cheng, M. Cherney, A. Chikanian, W. Christie, P. Chung, J. Chwastowski, M.J.M. Codrington, R. Corliss, J.G. Cramer, H.J. Crawford, X. Cui, S. Das, A. Davila Leyva, L.C. De Silva, R.R. Debbe, T.G. Dedovich, J. Deng, R. Derradi de Souza, S. Dhamija, L. Didenko, F. Ding, A. Dion, P. Djawotho, X. Dong, J.L. Drachenberg, J.E. Draper, C.M. Du, L.E. Dunkelberger, J.C. Dunlop, L.G. Efimov, M. Elnimr, J. Engelage, G. Eppley, L. Eun, O. Evdokimov, R. Fatemi, S. Fazio, J. Fedorisin, R.G. Fersch, P. Filip, E. Finch, Y. Fisyak, C.A. Gagliardi, D.R. Gangadharan, F. Geurts, A. Gibson, S. Gliske, Y.N. Gorbunov, O.G. Grebenyuk, D. Grosnick, S. Gupta, W. Guryn, B. Haag, O. Hajkova, A. Hamed, L.-X. Han, J.W. Harris, J.P. Hays-Wehle, S. Heppelmann, A. Hirsch, G.W. Hoffmann, D.J. Hofman, S. Horvat, B. Huang, H.Z. Huang, P. Huck, T.J. Humanic, L. Huo, G. Igo, W.W. Jacobs, C. Jena, E.G. Judd, S. Kabana, K. Kang, J. Kapitan, K. Kauder, H.W. Ke, D. Keane, A. Kechechyan, A. Kesich, D.P. Kikola, J. Kiryluk, I. Kisel, A. Kisiel, V. Kizka, S.R. Klein, D.D. Koetke, T. Kollegger, J. Konzer, I. Koralt, L. Koroleva, W. Korsch, L. Kotchenda, P. Kravtsov, K. Krueger, I. Kulakov, L. Kumar, 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, W. Li, X. Li, Y. Li, Z.M. Li, L.M. Lima, M.A. Lisa, F. Liu, T. Ljubicic, W.J. Llope, R.S. Longacre, Y. Lu, X. Luo, A. Luszczak, G.L. Ma, Y.G. Ma, D.M.M.D. Madagodagettige Don, D.P. Mahapatra, R. Majka, O.I. Mall, S. Margetis, C. Markert, H. Masui, H.S. Matis, D. McDonald, T.S. McShane, S. Mioduszewski, M.K. Mitrovski, Y. Mohammed, B. Mohanty, M.M. Mondal, B. Morozov, M.G. Munhoz, M.K. Mustafa, M. Naglis, B.K. Nandi, Md. Nasim, T.K. Nayak, J.M. Nelson, L.V. Nogach, J. Novak, G. Odyniec, A. Ogawa, K. Oh, A. Ohlson, V. Okorokov, E.W. Oldag, R.A.N. Oliveira, D. Olson, P. Ostrowski, M. Pachr, B.S. Page, S.K. Pal, Y.X. Pan, Y. Pandit, Y. Panebratsev, T. Pawlak, B. Pawlik, H. Pei, C. Perkins, W. Peryt, P. Pile, M. Planinic, J. Pluta, D. Plyku, N. Poljak, J. Porter, A.M. Poskanzer, C.B. Powell, C. Pruneau, N.K. Pruthi, M. Przybycien, P.R. Pujahari, J. Putschke, H. Qiu, R. Raniwala, S. Raniwala, R.L. Ray, R. Redwine, R. Reed, C.K. Riley, H.G. Ritter, J.B. Roberts, O.V. Rogachevskiy, J.L. Romero, J.F. Ross, L. Ruan, J. Rusnak, N.R. Sahoo, P.K. Sahu, I. Sakrejda, S. Salur, A. Sandacz, J. Sandweiss, E. Sangaline, A. Sarkar, J. Schambach, R.P. Scharenberg, A.M. Schmah, B. Schmidke, N. Schmitz, T.R. Schuster, J. Seele, J. Seger, P. Seyboth, N. Shah, E. Shahaliev, M. Shao, B. Sharma, M. Sharma, S.S. Shi, Q.Y. Shou, E.P. Sichtermann, R.N. Singaraju, M.J. Skoby, D. Smirnov, N. Smirnov, D. Solanki, P. Sorensen, U.G. deSouza, H.M. Spinka, B. Srivastava, T.D.S. Stanislaus, S.G. Steadman, J.R. Stevens, R. Stock, M. Strikhanov, B. Stringfellow, A.A.P. Suaide, M.C. Suarez, 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, B.A. Trzeciak, O.D. Tsai, J. Turnau, T. Ullrich, D.G. Underwood, G. Van Buren, G. van Nieuwenhuizen, J.A. Vanfossen, R. Varma, G.M.S. Vasconcelos, F. Videbæk, Y.P. Viyogi, S. Vokal, S.A. Voloshin, A. Vossen, M. Wada, 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, K. Xin, H. Xu, N. Xu, Q.H. Xu, W. Xu, Y. Xu, Z. Xu, L. Xue, Y. Yang, P. Yepes, Y. Yi, K. Yip, I.-K. Yoo, M. Zawisza, H. Zbroszczyk, J.B. Zhang, S. Zhang, X.P. Zhang, Y. Zhang, Z.P. Zhang, F. Zhao, J. Zhao, C. Zhong, X. Zhu, Y.H. Zhu, Y. Zoulkarneeva, and M. Zyzak
Subjects: Physics, Elastic scattering, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Scattering, High Energy Physics::Phenomenology, Hadron, 01 natural sciences, Nuclear physics, Scattering amplitude, Pomeron, Amplitude, 0103 physical sciences, High Energy Physics::Experiment, Spin-flip, Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider
Abstract: We report a high precision measurement of the transverse single spin asymmetry A(N) at the center of mass energy root s = 200 GeV in elastic proton-proton scattering by the STAR experiment at RHIC. The A(N) was measured in the four-momentum transfer squared t range 0.003
Published: 2013

6. 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

7. 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

8. Experimental studies of di-jets in Au plus Au collisions using angular correlations with respect to back-to-back leading hadrons

Author: L. Adamczyk, G. Agakishiev, M. M. Aggarwal, Z. Ahammed, A. V. Alakhverdyants, I. Alekseev, J. Alford, C. D. Anson, D. Arkhipkin, E. Aschenauer, G. S. Averichev, J. Balewski, A. Banerjee, Z. Barnovska, D. R. Beavis, R. Bellwied, M. J. Betancourt, R. R. Betts, A. Bhasin, A. K. Bhati, H. Bichsel, J. Bielcik, J. Bielcikova, L. C. Bland, I. G. Bordyuzhin, W. Borowski, J. Bouchet, A. V. Brandin, S. G. Brovko, E. Bruna, S. Bültmann, I. Bunzarov, T. P. Burton, J. Butterworth, X. Z. Cai, H. Caines, M. Calderón de la Barca Sánchez, D. Cebra, R. Cendejas, M. C. Cervantes, P. Chaloupka, Z. Chang, S. Chattopadhyay, H. F. Chen, J. H. Chen, J. Y. Chen, L. Chen, J. Cheng, M. Cherney, A. Chikanian, W. Christie, P. Chung, J. Chwastowski, M. J. M. Codrington, R. Corliss, J. G. Cramer, H. J. Crawford, X. Cui, S. Das, A. Davila Leyva, L. C. De Silva, R. R. Debbe, T. G. Dedovich, J. Deng, R. Derradi de Souza, S. Dhamija, L. Didenko, F. Ding, A. Dion, P. Djawotho, X. Dong, J. L. Drachenberg, J. E. Draper, C. M. Du, L. E. Dunkelberger, J. C. Dunlop, L. G. Efimov, M. Elnimr, J. Engelage, G. Eppley, L. Eun, O. Evdokimov, R. Fatemi, S. Fazio, J. Fedorisin, R. G. Fersch, P. Filip, E. Finch, Y. Fisyak, C. A. Gagliardi, D. R. Gangadharan, F. Geurts, A. Gibson, S. Gliske, Y. N. Gorbunov, O. G. Grebenyuk, D. Grosnick, S. Gupta, W. Guryn, B. Haag, O. Hajkova, A. Hamed, L-X. Han, J. W. Harris, J. P. Hays-Wehle, S. Heppelmann, A. Hirsch, G. W. Hoffmann, D. J. Hofman, S. Horvat, B. Huang, H. Z. Huang, P. Huck, T. J. Humanic, L. Huo, G. Igo, W. W. Jacobs, C. Jena, E. G. Judd, S. Kabana, K. Kang, J. Kapitan, K. Kauder, H. W. Ke, D. Keane, A. Kechechyan, A. Kesich, D. P. Kikola, J. Kiryluk, I. Kisel, A. Kisiel, V. Kizka, S. R. Klein, D. D. Koetke, T. Kollegger, J. Konzer, I. Koralt, L. Koroleva, W. Korsch, L. Kotchenda, P. Kravtsov, K. Krueger, I. Kulakov, L. Kumar, 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, W. Li, X. Li, Y. Li, Z. M. Li, L. M. Lima, M. A. Lisa, F. Liu, T. Ljubicic, W. J. Llope, R. S. Longacre, Y. Lu, X. Luo, A. Luszczak, G. L. Ma, Y. G. Ma, D. M. M. D. Madagodagettige Don, D. P. Mahapatra, R. Majka, O. I. Mall, S. Margetis, C. Markert, H. Masui, H. S. Matis, D. McDonald, T. S. McShane, S. Mioduszewski, M. K. Mitrovski, Y. Mohammed, B. Mohanty, M. M. Mondal, B. Morozov, M. G. Munhoz, M. K. Mustafa, M. Naglis, B. K. Nandi, Md. Nasim, T. K. Nayak, J. M. Nelson, L. V. Nogach, J. Novak, G. Odyniec, A. Ogawa, K. Oh, A. Ohlson, V. Okorokov, E. W. Oldag, R. A. N. Oliveira, D. Olson, P. Ostrowski, M. Pachr, B. S. Page, S. K. Pal, Y. X. Pan, Y. Pandit, Y. Panebratsev, T. Pawlak, B. Pawlik, H. Pei, C. Perkins, W. Peryt, P. Pile, M. Planinic, J. Pluta, D. Plyku, N. Poljak, J. Porter, A. M. Poskanzer, C. B. Powell, C. Pruneau, N. K. Pruthi, M. Przybycien, P. R. Pujahari, J. Putschke, H. Qiu, R. Raniwala, S. Raniwala, R. L. Ray, R. Redwine, R. Reed, C. K. Riley, H. G. Ritter, J. B. Roberts, O. V. Rogachevskiy, J. L. Romero, J. F. Ross, L. Ruan, J. Rusnak, N. R. Sahoo, P. K. Sahu, I. Sakrejda, S. Salur, A. Sandacz, J. Sandweiss, E. Sangaline, A. Sarkar, J. Schambach, R. P. Scharenberg, A. M. Schmah, B. Schmidke, N. Schmitz, T. R. Schuster, J. Seele, J. Seger, P. Seyboth, N. Shah, E. Shahaliev, M. Shao, B. Sharma, M. Sharma, S. S. Shi, Q. Y. Shou, E. P. Sichtermann, R. N. Singaraju, M. J. Skoby, D. Smirnov, N. Smirnov, D. Solanki, P. Sorensen, U. G. deSouza, H. M. Spinka, B. Srivastava, T. D. S. Stanislaus, S. G. Steadman, J. R. Stevens, R. Stock, M. Strikhanov, B. Stringfellow, A. A. P. Suaide, M. C. Suarez, 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, B. A. Trzeciak, O. D. Tsai, J. Turnau, T. Ullrich, D. G. Underwood, G. Van Buren, G. van Nieuwenhuizen, J. A. Vanfossen, R. Varma, G. M. S. Vasconcelos, F. Videbæk, Y. P. Viyogi, S. Vokal, S. A. Voloshin, A. Vossen, M. Wada, 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, K. Xin, H. Xu, N. Xu, Q. H. Xu, W. Xu, Y. Xu, Z. Xu, L. Xue, Y. Yang, P. Yepes, Y. Yi, K. Yip, I-K. Yoo, M. Zawisza, H. Zbroszczyk, J. B. Zhang, S. Zhang, X. P. Zhang, Y. Zhang, Z. P. Zhang, F. Zhao, J. Zhao, C. Zhong, X. Zhu, Y. H. Zhu, Y. Zoulkarneeva, and M. Zyzak
Subjects: Physics, AuAu, Nuclear and High Energy Physics, Particle physics, STAR, 010308 nuclear & particles physics, media_common.quotation_subject, Hadron, Di-jets, 01 natural sciences, Asymmetry, NATURAL SCIENCES. Physics, Nuclear physics, PRIRODNE ZNANOSTI. Fizika, hadrons, Deuterium, Angular correlation, 0103 physical sciences, Transverse momentum, High Energy Physics::Experiment, 010306 general physics, Relativistic Heavy Ion Collider, Nuclear Experiment, media_common
Abstract: Jet-medium interactions are studied via a multihadron correlation technique ( called "2 + 1"), where a pair of back-to-back hadron triggers with large transverse momentum is used as a proxy for a di-jet. This work extends the previous analysis for nearly symmetric trigger pairs with the highest momentum threshold of trigger hadron of 5 GeV/c with the new calorimeter-based triggers with energy thresholds of up to 10 GeV and above. The distributions of associated hadrons are studied in terms of correlation shapes and per-trigger yields on each trigger side. In contrast with di-hadron correlation results with single triggers, the associated hadron distributions for back-to-back triggers from central Au + Au data at root S-NN = 200 GeV show no strong modifications compared to d + Au data at the same energy. An imbalance in the total transverse momentum between hadrons attributed to the near-side and away-side of jetlike peaks is observed. The relative imbalance in the Au + Au measurement with respect to d + Au reference is found to increase with the asymmetry of the trigger pair, consistent with the expectation from medium-induced energy-loss effects. In addition, this relative total transverse momentum imbalance is found to decrease for softer associated hadrons. Such evolution indicates that the energy missing at higher associated momenta is converted into softer hadrons. DOI:10.1103/PhysRevC.87.044903
Published: 2013

9. Anomalous centrality evolution of two-particle angular correlations from Au-Au collisions atsNN=62and 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, L. C. Bland, I. G. Bordyuzhin, W. Borowski, J. Bouchet, E. Braidot, A. V. Brandin, 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, P. Chaloupka, S. Chattopadhyay, H. F. Chen, J. H. Chen, J. Y. Chen, L. Chen, J. Cheng, M. Cherney, A. Chikanian, W. Christie, P. Chung, M. J. M. Codrington, R. Corliss, J. G. Cramer, H. J. Crawford, X. Cui, M. S. Daugherity, A. Davila Leyva, L. C. De Silva, R. R. Debbe, T. G. Dedovich, J. Deng, A. A. Derevschikov, R. Derradi de Souza, L. Didenko, P. Djawotho, X. Dong, J. L. Drachenberg, J. E. Draper, C. M. Du, 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, A. Gupta, S. Gupta, B. Haag, O. Hajkova, A. Hamed, L.-X. Han, J. P. Hays-Wehle, S. Heppelmann, A. Hirsch, G. W. Hoffmann, D. J. Hofman, B. Huang, H. Z. Huang, T. J. Humanic, L. Huo, G. Igo, W. W. Jacobs, C. Jena, 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, D. D. Koetke, T. Kollegger, J. Konzer, I. Koralt, L. Koroleva, W. Korsch, L. Kotchenda, P. Kravtsov, K. Krueger, L. Kumar, 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, W. Li, X. Li, Y. Li, Z. M. Li, L. M. Lima, M. A. Lisa, F. Liu, T. Ljubicic, W. J. Llope, R. S. Longacre, 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, 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, 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, J. Pluta, D. Plyku, N. Poljak, J. Porter, 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, L. Ruan, J. Rusnak, N. R. Sahoo, I. Sakrejda, S. Salur, J. Sandweiss, E. Sangaline, A. Sarkar, J. Schambach, R. P. Scharenberg, J. Schaub, 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. deSouza, H. M. Spinka, B. Srivastava, T. D. S. Stanislaus, S. G. Steadman, J. R. Stevens, R. Stock, M. Strikhanov, B. Stringfellow, A. A. P. Suaide, M. C. Suarez, 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, S. Trentalange, R. E. Tribble, P. Tribedy, B. A. Trzeciak, 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, 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, X. Zhu, Y. H. Zhu, and Y. Zoulkarneeva
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Scattering, Elliptic flow, Perturbative QCD, Parton, 01 natural sciences, Charged particle, Nuclear physics, Pseudorapidity, 0103 physical sciences, Nuclear Experiment, 010306 general physics, Jet quenching, QCD matter
Abstract: We present two-dimensional (2D) two-particle angular correlations measured with the STAR detector on relative pseudorapidity η and azimuth ϕ for charged particles from Au-Au collisions at √sNN=62 and 200 GeV with transverse momentum pt≥0.15 GeV/c, |η|≤1, and 2π in azimuth. Observed correlations include a same-side (relative azimuth
Published: 2012

10. Inclusive charged hadron elliptic flow in Au+Au collisions atsNN=7.7–39 GeV

Author: L. Adamczyk, G. Agakishiev, M. M. Aggarwal, Z. Ahammed, A. V. Alakhverdyants, I. Alekseev, J. Alford, B. D. Anderson, C. D. Anson, D. Arkhipkin, E. Aschenauer, G. S. Averichev, J. Balewski, A. Banerjee, Z. Barnovska, D. R. Beavis, R. Bellwied, M. J. Betancourt, R. R. Betts, A. Bhasin, A. K. Bhati, H. Bichsel, J. Bielcik, J. Bielcikova, L. C. Bland, I. G. Bordyuzhin, W. Borowski, J. Bouchet, A. V. Brandin, S. G. Brovko, E. Bruna, S. Bültmann, I. Bunzarov, T. P. Burton, J. Butterworth, X. Z. Cai, H. Caines, M. Calderón de la Barca Sánchez, D. Cebra, R. Cendejas, M. C. Cervantes, P. Chaloupka, Z. Chang, S. Chattopadhyay, H. F. Chen, J. H. Chen, J. Y. Chen, L. Chen, J. Cheng, M. Cherney, A. Chikanian, W. Christie, P. Chung, J. Chwastowski, M. J. M. Codrington, R. Corliss, J. G. Cramer, H. J. Crawford, X. Cui, A. Davila Leyva, L. C. De Silva, R. R. Debbe, T. G. Dedovich, J. Deng, R. Derradi de Souza, S. Dhamija, L. Didenko, F. Ding, A. Dion, P. Djawotho, X. Dong, J. L. Drachenberg, J. E. Draper, C. M. Du, L. E. Dunkelberger, J. C. Dunlop, L. G. Efimov, M. Elnimr, J. Engelage, G. Eppley, L. Eun, O. Evdokimov, R. Fatemi, S. Fazio, J. Fedorisin, R. G. Fersch, P. Filip, E. Finch, Y. Fisyak, C. A. Gagliardi, D. R. Gangadharan, F. Geurts, A. Gibson, S. Gliske, Y. N. Gorbunov, O. G. Grebenyuk, D. Grosnick, S. Gupta, W. Guryn, B. Haag, O. Hajkova, A. Hamed, L-X. Han, J. W. Harris, J. P. Hays-Wehle, S. Heppelmann, A. Hirsch, G. W. Hoffmann, D. J. Hofman, S. Horvat, B. Huang, H. Z. Huang, P. Huck, T. J. Humanic, L. Huo, G. Igo, W. W. Jacobs, C. Jena, J. Joseph, E. G. Judd, S. Kabana, K. Kang, J. Kapitan, K. Kauder, H. W. Ke, D. Keane, A. Kechechyan, A. Kesich, D. Kettler, D. P. Kikola, J. Kiryluk, I. Kisel, A. Kisiel, V. Kizka, S. R. Klein, D. D. Koetke, T. Kollegger, J. Konzer, I. Koralt, L. Koroleva, W. Korsch, L. Kotchenda, P. Kravtsov, K. Krueger, I. Kulakov, L. Kumar, 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, W. Li, X. Li, Y. Li, Z. M. Li, L. M. Lima, M. A. Lisa, F. Liu, T. Ljubicic, W. J. Llope, R. S. Longacre, Y. Lu, X. Luo, A. Luszczak, G. L. Ma, Y. G. Ma, D. M. M. D. Madagodagettige Don, D. P. Mahapatra, R. Majka, O. I. Mall, S. Margetis, C. Markert, H. Masui, H. S. Matis, D. McDonald, T. S. McShane, S. Mioduszewski, M. K. Mitrovski, Y. Mohammed, B. Mohanty, M. M. Mondal, B. Morozov, M. G. Munhoz, M. K. Mustafa, M. Naglis, B. K. Nandi, Md. Nasim, T. K. Nayak, J. M. Nelson, L. V. Nogach, J. Novak, G. Odyniec, A. Ogawa, K. Oh, A. Ohlson, V. Okorokov, E. W. Oldag, R. A. N. Oliveira, D. Olson, P. Ostrowski, M. Pachr, B. S. Page, S. K. Pal, Y. X. Pan, Y. Pandit, Y. Panebratsev, T. Pawlak, B. Pawlik, H. Pei, C. Perkins, W. Peryt, P. Pile, M. Planinic, J. Pluta, D. Plyku, N. Poljak, J. Porter, A. M. Poskanzer, C. B. Powell, D. Prindle, C. Pruneau, N. K. Pruthi, M. Przybycien, P. R. Pujahari, J. Putschke, H. Qiu, R. Raniwala, S. Raniwala, R. L. Ray, R. Redwine, R. Reed, C. K. Riley, H. G. Ritter, J. B. Roberts, O. V. Rogachevskiy, J. L. Romero, J. F. Ross, L. Ruan, J. Rusnak, N. R. Sahoo, I. Sakrejda, S. Salur, A. Sandacz, J. Sandweiss, E. Sangaline, A. Sarkar, J. Schambach, R. P. Scharenberg, A. M. Schmah, B. Schmidke, N. Schmitz, T. R. Schuster, J. Seele, J. Seger, P. Seyboth, N. Shah, E. Shahaliev, M. Shao, B. Sharma, M. Sharma, S. S. Shi, Q. Y. Shou, E. P. Sichtermann, R. N. Singaraju, M. J. Skoby, D. Smirnov, N. Smirnov, D. Solanki, P. Sorensen, U. G. deSouza, H. M. Spinka, B. Srivastava, T. D. S. Stanislaus, S. G. Steadman, G. S. F. Stephans, J. R. Stevens, R. Stock, M. Strikhanov, B. Stringfellow, A. A. P. Suaide, M. C. Suarez, 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, B. A. Trzeciak, O. D. Tsai, J. Turnau, T. Ullrich, D. G. Underwood, G. Van Buren, G. van Nieuwenhuizen, J. A. Vanfossen, R. Varma, G. M. S. Vasconcelos, F. Videbæk, Y. P. Viyogi, S. Vokal, S. A. Voloshin, A. Vossen, M. Wada, 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, K. Xin, H. Xu, N. Xu, Q. H. Xu, W. Xu, Y. Xu, Z. Xu, L. Xue, Y. Yang, P. Yepes, Y. Yi, K. Yip, I-K. Yoo, M. Zawisza, H. Zbroszczyk, J. B. Zhang, S. Zhang, W. M. Zhang, X. P. Zhang, Y. Zhang, Z. P. Zhang, F. Zhao, J. Zhao, C. Zhong, X. Zhu, Y. H. Zhu, Y. Zoulkarneeva, and M. Zyzak
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Large Hadron Collider, 010308 nuclear & particles physics, Hadron, Elliptic flow, Collision, 01 natural sciences, Nuclear physics, Critical point (thermodynamics), Pseudorapidity, 0103 physical sciences, High Energy Physics::Experiment, Coordinate space, Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider
Abstract: A systematic study is presented for centrality, transverse momentum (p(T)), and pseudorapidity (eta) dependence of the inclusive charged hadron elliptic flow (v(2)) at midrapidity (vertical bar eta vertical bar < 1.0) in Au + Au collisions at root s(NN) = 7.7, 11.5, 19.6, 27, and 39 GeV. The results obtained with different methods, including correlations with the event plane reconstructed in a region separated by a large pseudorapidity gap and four-particle cumulants (v(2){4}), are presented to investigate nonflow correlations and v(2) fluctuations. We observe that the difference between v(2){2} and v(2){4} is smaller at the lower collision energies. Values of v(2), scaled by the initial coordinate space eccentricity, v(2)/epsilon, as a function of p(T) are larger in more central collisions, suggesting stronger collective flow develops in more central collisions, similar to the results at higher collision energies. These results are compared to measurements at higher energies at the Relativistic Heavy Ion Collider (root s(NN) = 62.4 and 200 GeV) and at the Large Hadron Collider (Pb + Pb collisions at root s(NN) = 2.76 TeV). The v(2)(pT) values for fixed pT rise with increasing collision energy within the pT range studied (
Published: 2012

11. Measurements ofD0andD*production inp+pcollisions ats=200 GeV

Author: C. D. Anson, Elena Bruna, William Axel Leight, K. Yip, M. J. Skoby, Frank Jm Geurts, Bedangadas Mohanty, Guo-Liang Ma, J. S. Wang, J. C. Dunlop, Z. P. Zhang, R. R. Debbe, A. S. Hirsch, P. Kravtsov, A. M. Schmah, Dmitry Smirnov, C. B. Powell, T. P. Burton, L. Kotchenda, R. G. Fersch, Jifa Tian, A. K. Bhati, D. Keane, S. G. Steadman, Zubayer Ahammed, M. J. LeVine, I. Koralt, R. Stock, F. Videbæk, G. Webb, Sukalyan Chattopadhyay, S. Heppelmann, Chitrasen Jena, Y. P. Lu, P. Djawotho, L. G. Efimov, Y. Yi, J. Rusnak, X. L. Wang, M. Wada, L. V. Nogach, E. C. Aschenauer, S. Margetis, Xuan Zhang, G. Eppley, A. V. Brandin, K. Xin, L. Li, T. K. Nayak, X. Dong, Q. Y. Shou, R. Fatemi, Michael Joseph Betancourt, J. A. Vanfossen, S. Fazio, I. G. Bordyuzhin, Mirko Planinic, S. K. Pal, Justin Stevens, Q. H. Xu, M. K. Mustafa, C. A. Whitten, L. Ruan, R. Corliss, Jana Bielcikova, Prabhat Ranjan Pujahari, J. L. Romero, Hanna Paulina Zbroszczyk, R. N. Singaraju, L. Huo, J. Alford, W. Guryn, F. Ding, E. Finch, Y. Panebratsev, Aditi Banerjee, D. Grosnick, J. Pluta, W. Li, H. Masui, A. Kesich, Amal Sarkar, P. Chaloupka, E. P. Sichtermann, J. Seele, R. Varma, James Prewitt Hays-Wehle, B. S. Page, D. R. Beavis, Haiyan Wang, Jake Y. Chen, Sergey Voloshin, Olga Evdokimov, Barbara Antonina Trzeciak, Y. Li, L. Didenko, Y. N. Gorbunov, M. Cherney, Lokesh Kumar, Hua Pei, J. Fedorisin, D. P. Kikola, B. Stringfellow, Z. Z. Xu, Rene Bellwied, Manish Sharma, R. S. Longacre, T. Kollegger, J. Balewski, Rashmi Raniwala, I. Sakrejda, L. C. Bland, Y. F. Wu, S. Trentalange, P. Ostrowski, X. Z. Cai, D. P. Mahapatra, Y. Wang, Nikita Smirnov, R. Reed, X. M. Sun, A. Luszczak, Y. H. Zhu, P. Sorensen, L. M. Lima, R. E. Tribble, S. Horvat, A. Szanto de Toledo, Jay Roberts, H. Z. Huang, Jize Zhao, J. Kapitan, F. Zhao, O. Hajkova, S. Vokal, C-Q. Li, F. Liu, Mariusz Przybycien, O. D. Tsai, Claude Andre Pruneau, M. Shao, Y. X. Pan, G. Van Buren, Zhigang Xiao, S. K. Gupta, A. Chikanian, Gerald W Hoffmann, T. Pawlak, M. Elnimr, M. C. Cervantes, E. G. Judd, J. G. Cramer, G. Igo, J. Novak, W. Witzke, Y. Mohammed, B. Sharma, J. Bouchet, P. Chung, O. I. Mall, A. V. Alakhverdyants, R. P. Scharenberg, Christina Markert, M. K. Mitrovski, Md. Nasim, R. D. Majka, J. L. Drachenberg, A. Sandacz, S. S. Shi, H. S. Matis, K. Krueger, Renato Aparecido Negrao De Oliveira, M. Calderon De La Barca Sanchez, T. Ullrich, Y. Yang, W. Borowski, K. Kauder, Wei Xie, Russell Richard Betts, J. Kiryluk, B. Huang, J. Schambach, P. Huck, Xiangyuan Cui, W. Christie, J. H. Chen, Rajarshi Ray, Sevil Salur, L-X. Han, Michal Sumbera, A. A. P. Suaide, G. M.S. Vasconcelos, Y. Pandit, S. LaPointe, Nilay Shah, D. G. Underwood, S. R. Klein, T. Tarnowsky, L. E. Dunkelberger, D. L. Olson, N. Schmitz, Y. G. Ma, W. Peryt, E. W. Oldag, J. Turnau, T. J. Humanic, E. Sangaline, T. S. McShane, D. Arkhipkin, E. Shahaliev, R. Witt, A. Hamed, W. M. Zhang, Anthony Robert Timmins, S. Mioduszewski, W. W. Jacobs, Adam Ryszard Kisiel, J. Lauret, B. D. Anderson, X.G. Li, C. M. Du, N. Xu, H. S. Xu, P. Filip, L. Eun, Donald M. McDonald, N. K. Pruthi, P. Seyboth, J. Cheng, T. J. M. Symons, H. J. Crawford, Prithwish Tribedy, B. K. Srivastava, B. Morozov, S. W. Wissink, Y. Zhang, Janet Elizabeth Seger, R. Lednicky, L. C. De Silva, D. J. Hofman, Anju Bhasin, Nikola Poljak, Y. J. Sun, Jongmin Lee, P. Pile, J. Takahashi, J. E. Draper, M. A. C. Lamont, S. Kabana, Leszek Adamczyk, J. F. Ross, R. P. Redwine, R. Derradi de Souza, K. Kang, Y. P. Viyogi, A. Lebedev, G. D. Westfall, Vitaly Okorokov, T. G. Dedovich, W. J. Llope, B. Pawlik, Zhiming Li, Basanta Kumar Nandi, Bernd Surrow, S. Zhang, W. Xu, T. Ljubicic, Wolfgang Korsch, J. W. Harris, M. J. M. Codrington, A. M. Poskanzer, H. Bichsel, H. Caines, Sudhir Raniwala, O. G. Grebenyuk, Y. Zoulkarneeva, C. Zhong, Alice Elisabeth Ohlson, J. Putschke, C. K. Riley, Xiaofeng Zhu, M. Naglis, Q. Wang, J. M. Butterworth, A. Ogawa, T. R. Schuster, J. C. Webb, H. F. Chen, Thomas A. Trainor, G. J. van Nieuwenhuizen, Hao Qiu, P. Yepes, A. Davila Leyva, Y. Fisyak, X. G. Luo, K. Oh, A. H. Tang, Marcelo Gameiro Munhoz, D. J. Prindle, C. A. Gagliardi, G. Wang, I. G. Alekseev, Donika Plyku, M. A. Lisa, I. Bunzarov, M. Pachr, Z. J. Sun, Jian Deng, G. Agakishiev, D. Cebra, Jaroslav Bielcik, Jie Zhang, Z. Barnovska, O. V. Rogachevskiy, A. Dion, D. D. Koetke, L. Xue, Li-Zhu Chen, Madan M. Aggarwal, Fuqiang Wang, A. Vossen, D. Tlusty, D. M.M.D. Madagodagettige Don, D. R. Gangadharan, Niladribihari Sahoo, J. Engelage, J. M. Landgraf, B. Haag, Zebo Tang, Janusz Chwastowski, M. Strikhanov, J. Konzer, C. Perkins, G. Odyniec, J. Sandweiss, D. Thein, D. Solanki, M. Tokarev, T. D. S. Stanislaus, H. H. Wieman, A. Kechechyan, R. Cendejas, V. A. Kizka, J. H. Thomas, U. G. Desouza, D. Kettler, G. S. Averichev, M. Zawisza, H. M. Spinka, J. Porter, L. H. Tarini, L. Koroleva, B. Schmidke, H. W. Ke, Y. F. Xu, S. Dhamija, S. G. Brovko, I-K. Yoo, M. C. Suarez, D. N. Svirida, J. M. Joseph, Stephen V. Gliske, H. G. Ritter, and S. Bueltmann
Subjects: Scattering cross-section, Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Star (game theory), High Energy Physics::Phenomenology, Hadron, Perturbative QCD, Charge (physics), 01 natural sciences, 0103 physical sciences, Transverse momentum, High Energy Physics::Experiment, Production (computer science), Nuclear Experiment, 010306 general physics, Energy (signal processing)
Abstract: We report measurements of charmed-hadron $({D}^{0},{D}^{*})$ production cross sections at midrapidity in $p+p$ collisions at a center-of-mass energy of 200 GeV by the STAR experiment. Charmed hadrons were reconstructed via the hadronic decays ${D}^{0}\ensuremath{\rightarrow}{K}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}$, ${D}^{*+}\ensuremath{\rightarrow}{D}^{0}{\ensuremath{\pi}}^{+}\ensuremath{\rightarrow}{K}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{+}$ and their charge conjugates, covering the ${p}_{T}$ range of $0.6--2.0$ and $2.0--6.0\text{ }\text{ }\mathrm{GeV}/c$ for ${D}^{0}$ and ${D}^{*+}$, respectively. From this analysis, the charm-pair production cross section at midrapidity is $d\ensuremath{\sigma}/dy{|}_{y=0}^{c\overline{c}}=170\ifmmode\pm\else\textpm\fi{}45(\mathrm{stat}{)}_{\ensuremath{-}59}^{+38}(\mathrm{sys})\text{ }\text{ }\ensuremath{\mu}\mathrm{b}$. The extracted charm-pair cross section is compared to perturbative QCD calculations. The transverse momentum differential cross section is found to be consistent with the upper bound of a fixed-order next-to-leading logarithm calculation.
Published: 2012

12. Transverse single-spin asymmetry and cross section forπ0andηmesons at large Feynmanxinp↑+pcollisions ats=200 GeV

Author: R. S. Longacre, H. Z. Huang, S. Vokal, Madan M. Aggarwal, Fuqiang Wang, G. Igo, J. Novak, J. Kiryluk, J. H. Chen, Xiaofeng Luo, B. Sharma, A. Sandacz, Y. F. Wu, Guo-Liang Ma, J. Bouchet, P. Seyboth, J. L. Drachenberg, Olga Evdokimov, Barbara Antonina Trzeciak, K. Kauder, S. G. Brovko, J. Butterworth, O. D. Tsai, Leszek Adamczyk, M. Elnimr, M. C. Cervantes, M. C. Suarez, D. N. Svirida, Z. P. Zhang, Sevil Salur, R. Derradi de Souza, A. S. Hirsch, P. Kravtsov, A. M. Schmah, A. Vossen, Jay Roberts, A. Chikanian, I. K. Yoo, Thorsten Sven Kollegger, Xuan Zhang, M. J. M. Codrington, T. J. Humanic, J. L. Romero, H. W. Ke, B. Haag, W. Xu, S. Heppelmann, Hanna Paulina Zbroszczyk, Wolfgang Korsch, D. R. Beavis, Marcelo Gameiro Munhoz, D. J. Prindle, E. Finch, Sergey Voloshin, F. Videbæk, G. Webb, E. G. Judd, Q. H. Xu, Vitaly Okorokov, E. Sangaline, D. Arkhipkin, L. Kotchenda, A. Hamed, R. Varma, Bernd Surrow, Stephen V. Gliske, H. Pei, L. Eun, Zebo Tang, Janusz Chwastowski, J. Putschke, Sukalyan Chattopadhyay, James Prewitt Hays-Wehle, J. B. Zhang, Xiaofeng Zhu, G. Eppley, Y. Wang, P. Chung, B. S. Page, J. E. Draper, F. Zhao, J. Porter, C. D. Anson, D. P. Kikola, B. Stringfellow, R. N. Singaraju, L. Huo, B. Pawlik, R. Witt, S. Mioduszewski, Wei Xie, M. Naglis, I. G. Alekseev, Donika Plyku, M. A. Lisa, J. W. Harris, Chitrasen Jena, O. I. Mall, M. A.C. Lamont, L-X. Han, J. Pluta, W. Li, B. Huang, Bedangadas Mohanty, G. Wang, C. A. Gagliardi, M. Pachr, Donald M. McDonald, Prithwish Tribedy, B. K. Srivastava, A. Ogawa, H. F. Chen, Thomas A. Trainor, C-Q. Li, R. P. Scharenberg, Christina Markert, Y. P. Lu, A. Luszczak, D. Smirnov, J. G. Cramer, Rene Bellwied, P. Yepes, A. Davila Leyva, S. Dhamija, C. Perkins, Jaroslav Bielcik, P. R. Pujahari, H. S. Matis, C. B. Powell, K. Yip, J. S. Wang, A. H. Tang, Z. J. Sun, M. K. Mustafa, J. Joseph, G. M.S. Vasconcelos, Y. Pandit, N. Schmitz, E. Shahaliev, Basanta Kumar Nandi, A. M. Poskanzer, A. Kechechyan, J. Alford, W. Guryn, Y. H. Zhu, H. G. Ritter, R. G. Fersch, I. Koralt, L. M. Lima, R. E. Tribble, J. C. Dunlop, M. Shao, Y. X. Pan, G. Van Buren, Jize Zhao, S. S. Shi, I. Bunzarov, W. W. Jacobs, L. V. Nogach, Gerald W Hoffmann, R. R. Debbe, M. Wada, R. Cendejas, Zubayer Ahammed, J. Lauret, D. Thein, T. P. Burton, M. J. LeVine, S. Bueltmann, O. V. Rogachevskiy, Y. Li, R. A.N. Oliveira, C. K. Riley, M. J. Skoby, Frank Jm Geurts, M. Calderon De La Barca Sanchez, R. Lednicky, S. G. Steadman, G. Van Nieuwenhuizen, Z. Barnovska, T. Tarnowsky, P. Djawotho, Xiangming Sun, D. P. Mahapatra, O. G. Grebenyuk, Jifa Tian, D. D. Koetke, J. F. Ross, L. Xue, H. Qiu, Michal Sumbera, A. A. P. Suaide, M. Tokarev, Q. Y. Shou, E. W. Oldag, W. J. Llope, T. S. McShane, D. Tlusty, I. G. Bordyuzhin, Mirko Planinic, S. W. Wissink, Jian Deng, Y. Zhang, D. Solanki, Y. Xu, B. D. Anderson, G. Agakishiev, Elena Bruna, J. Fedorisin, S. H. Zhang, B. Schmidke, P. Chaloupka, Y. G. Ma, W. Peryt, Nikola Poljak, Z. J. Xu, S. Fazio, N. K. Pruthi, Y. N. Gorbunov, A. V. Brandin, T. D. S. Stanislaus, Y. Fisyak, H. H. Wieman, A. Ohlson, K. Xin, O. Hajkova, D. Cebra, S. Trentalange, L. Li, K. Oh, J. Seele, Y. J. Sun, H. Bichsel, G. Odyniec, A. Kesich, Y. Zoulkarneeva, C. Zhong, S. Kabana, Haiyan Wang, Y. P. Viyogi, J. Turnau, I. Sakrejda, S. Horvat, A. Szanto de Toledo, J. Kapitan, Q. Wang, X. Z. Cai, M. K. Mitrovski, N. R. Sahoo, Y. Yang, S. LaPointe, T. R. Schuster, T. Pawlak, W. Witzke, Y. Mohammed, Nilay Shah, David Jonathan Hofman, H. Masui, T. G. Dedovich, A. V. Alakhverdyants, A. Sarkar, Russell Richard Betts, J. Takahashi, D. G. Underwood, J. Cheng, T. J. M. Symons, L. C. De Silva, J. Engelage, F. Ding, P. Ostrowski, Y. Panebratsev, D. Grosnick, J. M. Landgraf, Zhigang Xiao, Anju Bhasin, M. Sharma, Rolf K. Reed, M. Strikhanov, A. K. Bhati, D. Keane, R. P. Redwine, Nikolai Smirnov, R. Stock, L. G. Efimov, T. K. Nayak, J. Konzer, K. Kang, X. L. Wang, E. C. Aschenauer, A. Lebedev, S. Margetis, X. Dong, J. Sandweiss, S. K. Pal, Justin Stevens, Nasim, Jongmin Lee, R. L. Ray, X. Li, T. Ljubicic, D. M.M.D. Madagodagettige Don, D. R. Gangadharan, Y. Yi, J. Rusnak, H. Caines, Sudhir Raniwala, C. A. Whitten, L. Ruan, E. P. Sichtermann, J. Balewski, Rashmi Raniwala, R. Corliss, Claude Andre Pruneau, T. Ullrich, A. Dion, N. Xu, C. M. Du, H. S. Xu, P. Filip, P. Pile, G. D. Westfall, F. Liu, Mariusz Przybycien, William Axel Leight, S. R. Klein, L. E. Dunkelberger, D. L. Olson, R. D. Majka, A. Bannerjee, R. Fatemi, Michael Joseph Betancourt, J. Y. Chen, W. Borowski, J. Schambach, K. Krueger, J. A. Vanfossen, Xiangyuan Cui, W. Christie, M. Cherney, Lokesh Kumar, W. M. Zhang, Jana Bielcikova, B. Morozov, S. K. Gupta, Janet Elizabeth Seger, P. Huck, Anthony Robert Timmins, Adam Ryszard Kisiel, P. Sorensen, H. J. Crawford, L. Didenko, Zhiming Li, J. C. Webb, L. H. Tarini, L. Koroleva, Li-Yi Chen, M. Zawisza, H. M. Spinka, V. A. Kizka, J. H. Thomas, U. G. Desouza, D. Kettler, and G. S. Averichev
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Meson, 010308 nuclear & particles physics, media_common.quotation_subject, Perturbative QCD, 01 natural sciences, Asymmetry, Cross section (geometry), Transverse plane, symbols.namesake, 0103 physical sciences, symbols, Feynman diagram, Rapidity, Atomic physics, 010306 general physics, media_common, Spin-½
Abstract: Measurements of the differential cross section and the transverse single-spin asymmetry, A(N), vs x(F) for pi(0) and eta mesons are reported for 0.4 0.55, is consistent with a perturbative QCD prediction, and the eta/pi(0) cross-section ratio agrees with existing midrapidity measurements. For 0.55 < x(F) < 0.75, the average A(N) for eta is 0.210 +/- 0.056, and that for pi(0) is 0.081 +/- 0.016. The probability that these two asymmetries are equal is similar to 3%.
Published: 2012

13. Longitudinal and transverse spin asymmetries for inclusive jet production at mid-rapidity in polarizedp+pcollisions ats=200 GeV

Author: L. Adamczyk, G. Agakishiev, M. M. Aggarwal, Z. Ahammed, A. V. Alakhverdyants, I. Alekseev, J. Alford, B. D. Anderson, C. D. Anson, D. Arkhipkin, E. Aschenauer, G. S. Averichev, J. Balewski, A. Banerjee, Z. Barnovska, D. R. Beavis, R. Bellwied, M. J. Betancourt, R. R. Betts, A. Bhasin, A. K. Bhati, H. Bichsel, J. Bielcik, J. Bielcikova, L. C. Bland, I. G. Bordyuzhin, W. Borowski, J. Bouchet, A. V. Brandin, A. Bridgeman, S. G. Brovko, E. Bruna, S. Bueltmann, I. Bunzarov, T. P. Burton, J. Butterworth, X. Z. Cai, H. Caines, M. Calderón de la Barca Sánchez, D. Cebra, R. Cendejas, M. C. Cervantes, P. Chaloupka, S. Chattopadhyay, H. F. Chen, J. H. Chen, J. Y. Chen, L. Chen, J. Cheng, M. Cherney, A. Chikanian, W. Christie, P. Chung, J. Chwastowski, M. J. M. Codrington, R. Corliss, J. G. Cramer, H. J. Crawford, X. Cui, A. Davila Leyva, L. C. De Silva, R. R. Debbe, T. G. Dedovich, J. Deng, R. Derradi de Souza, S. Dhamija, L. Didenko, F. Ding, A. Dion, P. Djawotho, X. Dong, J. L. Drachenberg, J. E. Draper, C. M. Du, L. E. Dunkelberger, J. C. Dunlop, L. G. Efimov, M. Elnimr, J. Engelage, G. Eppley, L. Eun, O. Evdokimov, R. Fatemi, S. Fazio, J. Fedorisin, R. G. Fersch, P. Filip, E. Finch, Y. Fisyak, C. A. Gagliardi, D. R. Gangadharan, F. Geurts, S. Gliske, Y. N. Gorbunov, O. G. Grebenyuk, D. Grosnick, S. Gupta, W. Guryn, B. Haag, O. Hajkova, A. Hamed, L-X. Han, J. W. Harris, J. P. Hays-Wehle, S. Heppelmann, A. Hirsch, G. W. Hoffmann, D. J. Hofman, S. Horvat, B. Huang, H. Z. Huang, P. Huck, T. J. Humanic, L. Huo, G. Igo, W. W. Jacobs, C. Jena, J. Joseph, E. G. Judd, S. Kabana, K. Kang, J. Kapitan, K. Kauder, H. W. Ke, D. Keane, A. Kechechyan, A. Kesich, D. Kettler, D. P. Kikola, J. Kiryluk, A. Kisiel, V. Kizka, S. R. Klein, D. D. Koetke, T. Kollegger, J. Konzer, I. Koralt, L. Koroleva, W. Korsch, L. Kotchenda, K. Kowalik, P. Kravtsov, K. Krueger, L. Kumar, 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, W. Li, X. Li, Y. Li, Z. M. Li, L. M. Lima, M. A. Lisa, F. Liu, T. Ljubicic, W. J. Llope, R. S. Longacre, Y. Lu, X. Luo, A. Luszczak, G. L. Ma, Y. G. Ma, D. M. M. D. Madagodagettige Don, D. P. Mahapatra, R. Majka, O. I. Mall, S. Margetis, C. Markert, H. Masui, H. S. Matis, D. McDonald, T. S. McShane, J. Millane, S. Mioduszewski, M. K. Mitrovski, Y. Mohammed, B. Mohanty, M. M. Mondal, B. Morozov, M. G. Munhoz, M. K. Mustafa, M. Naglis, B. K. Nandi, Md. Nasim, T. K. Nayak, L. V. Nogach, J. Novak, G. Odyniec, A. Ogawa, K. Oh, A. Ohlson, V. Okorokov, E. W. Oldag, R. A. N. Oliveira, D. Olson, P. Ostrowski, M. Pachr, B. S. Page, S. K. Pal, Y. X. Pan, Y. Pandit, Y. Panebratsev, T. Pawlak, B. Pawlik, H. Pei, C. Perkins, W. Peryt, P. Pile, M. Planinic, J. Pluta, D. Plyku, N. Poljak, J. Porter, A. M. Poskanzer, C. B. Powell, D. Prindle, C. Pruneau, N. K. Pruthi, M. Przybycien, P. R. Pujahari, J. Putschke, H. Qiu, R. Raniwala, S. Raniwala, R. L. Ray, R. Redwine, R. Reed, C. K. Riley, H. G. Ritter, J. B. Roberts, O. V. Rogachevskiy, J. L. Romero, J. F. Ross, L. Ruan, J. Rusnak, N. R. Sahoo, I. Sakrejda, T. Sakuma, S. Salur, A. Sandacz, J. Sandweiss, E. Sangaline, A. Sarkar, M. Sarsour, J. Schambach, R. P. Scharenberg, A. M. Schmah, B. Schmidke, N. Schmitz, T. R. Schuster, J. Seele, J. Seger, P. Seyboth, N. Shah, E. Shahaliev, M. Shao, B. Sharma, M. Sharma, S. S. Shi, Q. Y. Shou, E. P. Sichtermann, R. N. Singaraju, M. J. Skoby, D. Smirnov, N. Smirnov, D. Solanki, P. Sorensen, U. G. deSouza, 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, 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, S. Trentalange, R. E. Tribble, P. Tribedy, B. A. Trzeciak, O. D. Tsai, J. Turnau, T. Ullrich, D. G. Underwood, G. Van Buren, G. van Nieuwenhuizen, J. A. Vanfossen, R. Varma, G. M. S. Vasconcelos, F. Videbæk, Y. P. Viyogi, S. Vokal, S. A. Voloshin, A. Vossen, M. Wada, 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, K. Xin, H. Xu, N. Xu, Q. H. Xu, W. Xu, Y. Xu, Z. Xu, L. Xue, Y. Yang, P. Yepes, Y. Yi, K. Yip, I-K. Yoo, M. Zawisza, H. Zbroszczyk, J. B. Zhang, S. Zhang, W. M. Zhang, X. P. Zhang, Y. Zhang, Z. P. Zhang, F. Zhao, J. Zhao, C. Zhong, X. Zhu, Y. H. Zhu, and Y. Zoulkarneeva
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, media_common.quotation_subject, Sigma, Polarization (waves), 01 natural sciences, Asymmetry, Gluon, Nuclear physics, Transverse plane, 0103 physical sciences, High Energy Physics::Experiment, Rapidity, Nuclear Experiment, 010306 general physics, Nucleon, Relativistic Heavy Ion Collider, media_common
Abstract: We report STAR measurements of the longitudinal double-spin asymmetry A_LL, the transverse single-spin asymmetry A_N, and the transverse double-spin asymmetries A_Sigma and A_TT for inclusive jet production at mid-rapidity in polarized p+p collisions at a center-of-mass energy of sqrt{s} = 200 GeV. The data represent integrated luminosities of 7.6 /pb with longitudinal polarization and 1.8 /pb with transverse polarization, with 50-55% beam polarization, and were recorded in 2005 and 2006. No evidence is found for the existence of statistically significant jet A_N, A_Sigma, or A_TT at mid-rapidity. Recent model calculations indicate the A_N results may provide new limits on the gluon Sivers distribution in the proton. The asymmetry A_LL significantly improves the knowledge of gluon polarization in the nucleon.
Published: 2012

14. Di-electron spectrum at mid-rapidity inp+pcollisions ats=200GeV

Author: L. Adamczyk, G. Agakishiev, M. M. Aggarwal, Z. Ahammed, A. V. Alakhverdyants, I. Alekseev, J. Alford, B. D. Anderson, C. D. Anson, D. Arkhipkin, E. Aschenauer, G. S. Averichev, J. Balewski, A. Banerjee, Z. Barnovska, D. R. Beavis, R. Bellwied, M. J. Betancourt, R. R. Betts, A. Bhasin, A. K. Bhati, H. Bichsel, J. Bielcik, J. Bielcikova, L. C. Bland, I. G. Bordyuzhin, W. Borowski, J. Bouchet, A. V. Brandin, S. G. Brovko, E. Bruna, S. Bueltmann, I. Bunzarov, T. P. Burton, J. Butterworth, X. Z. Cai, H. Caines, M. Calderón de la Barca Sánchez, D. Cebra, R. Cendejas, M. C. Cervantes, P. Chaloupka, Z. Chang, S. Chattopadhyay, H. F. Chen, J. H. Chen, J. Y. Chen, L. Chen, J. Cheng, M. Cherney, A. Chikanian, W. Christie, P. Chung, J. Chwastowski, M. J. M. Codrington, R. Corliss, J. G. Cramer, H. J. Crawford, X. Cui, A. Davila Leyva, L. C. De Silva, R. R. Debbe, T. G. Dedovich, J. Deng, R. Derradi de Souza, S. Dhamija, L. Didenko, F. Ding, A. Dion, P. Djawotho, X. Dong, J. L. Drachenberg, J. E. Draper, C. M. Du, L. E. Dunkelberger, J. C. Dunlop, L. G. Efimov, M. Elnimr, J. Engelage, G. Eppley, L. Eun, O. Evdokimov, R. Fatemi, S. Fazio, J. Fedorisin, R. G. Fersch, P. Filip, E. Finch, Y. Fisyak, C. A. Gagliardi, D. R. Gangadharan, F. Geurts, A. Gibson, S. Gliske, Y. N. Gorbunov, O. G. Grebenyuk, D. Grosnick, S. Gupta, W. Guryn, B. Haag, O. Hajkova, A. Hamed, L-X. Han, J. W. Harris, J. P. Hays-Wehle, S. Heppelmann, A. Hirsch, G. W. Hoffmann, D. J. Hofman, S. Horvat, B. Huang, H. Z. Huang, P. Huck, T. J. Humanic, L. Huo, G. Igo, W. W. Jacobs, C. Jena, J. Joseph, E. G. Judd, S. Kabana, K. Kang, J. Kapitan, K. Kauder, H. W. Ke, D. Keane, A. Kechechyan, A. Kesich, D. Kettler, D. P. Kikola, J. Kiryluk, A. Kisiel, V. Kizka, S. R. Klein, D. D. Koetke, T. Kollegger, J. Konzer, I. Koralt, L. Koroleva, W. Korsch, L. Kotchenda, P. Kravtsov, K. Krueger, L. Kumar, 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, W. Li, X. Li, Y. Li, Z. M. Li, L. M. Lima, M. A. Lisa, F. Liu, T. Ljubicic, W. J. Llope, R. S. Longacre, Y. Lu, X. Luo, A. Luszczak, G. L. Ma, Y. G. Ma, D. M. M. D. Madagodagettige Don, D. P. Mahapatra, R. Majka, O. I. Mall, S. Margetis, C. Markert, H. Masui, H. S. Matis, D. McDonald, T. S. McShane, S. Mioduszewski, M. K. Mitrovski, Y. Mohammed, B. Mohanty, M. M. Mondal, B. Morozov, M. G. Munhoz, M. K. Mustafa, M. Naglis, B. K. Nandi, Md. Nasim, T. K. Nayak, L. V. Nogach, J. Novak, G. Odyniec, A. Ogawa, K. Oh, A. Ohlson, V. Okorokov, E. W. Oldag, R. A. N. Oliveira, D. Olson, P. Ostrowski, M. Pachr, B. S. Page, S. K. Pal, Y. X. Pan, Y. Pandit, Y. Panebratsev, T. Pawlak, B. Pawlik, H. Pei, C. Perkins, W. Peryt, P. Pile, M. Planinic, J. Pluta, D. Plyku, N. Poljak, J. Porter, A. M. Poskanzer, C. B. Powell, D. Prindle, C. Pruneau, N. K. Pruthi, M. Przybycien, P. R. Pujahari, J. Putschke, H. Qiu, R. Raniwala, S. Raniwala, R. L. Ray, R. Redwine, R. Reed, C. K. Riley, H. G. Ritter, J. B. Roberts, O. V. Rogachevskiy, J. L. Romero, J. F. Ross, L. Ruan, J. Rusnak, N. R. Sahoo, I. Sakrejda, S. Salur, A. Sandacz, J. Sandweiss, E. Sangaline, A. Sarkar, J. Schambach, R. P. Scharenberg, A. M. Schmah, B. Schmidke, N. Schmitz, T. R. Schuster, J. Seele, J. Seger, P. Seyboth, N. Shah, E. Shahaliev, M. Shao, B. Sharma, M. Sharma, S. S. Shi, Q. Y. Shou, E. P. Sichtermann, R. N. Singaraju, M. J. Skoby, D. Smirnov, N. Smirnov, D. Solanki, P. Sorensen, U. G. deSouza, H. M. Spinka, B. Srivastava, T. D. S. Stanislaus, S. G. Steadman, J. R. Stevens, R. Stock, M. Strikhanov, B. Stringfellow, A. A. P. Suaide, M. C. Suarez, 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, S. Trentalange, R. E. Tribble, P. Tribedy, B. A. Trzeciak, O. D. Tsai, J. Turnau, T. Ullrich, D. G. Underwood, G. Van Buren, G. van Nieuwenhuizen, J. A. Vanfossen, R. Varma, G. M. S. Vasconcelos, F. Videbæk, Y. P. Viyogi, S. Vokal, S. A. Voloshin, A. Vossen, M. Wada, 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, K. Xin, H. Xu, N. Xu, Q. H. Xu, W. Xu, Y. Xu, Z. Xu, L. Xue, Y. Yang, P. Yepes, Y. Yi, K. Yip, I-K. Yoo, M. Zawisza, H. Zbroszczyk, J. B. Zhang, S. Zhang, W. M. Zhang, X. P. Zhang, Y. Zhang, Z. P. Zhang, F. Zhao, J. Zhao, C. Zhong, X. Zhu, Y. H. Zhu, and Y. Zoulkarneeva
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Meson, 010308 nuclear & particles physics, Branching fraction, High Energy Physics::Phenomenology, 01 natural sciences, 7. Clean energy, Omega, Particle identification, Nuclear physics, Pseudoscalar, 0103 physical sciences, Mass spectrum, High Energy Physics::Experiment, Rapidity, Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider
Abstract: We report on the mid-rapidity mass spectrum of di-electrons and cross sections of pseudoscalar and vector mesons via e(+) e(-) decays, from root s = 200 GeV p + p collisions, measured by the large-acceptance experiment STAR at the Relativistic Heavy Ion Collider. The ratio of the di-electron continuum to the combinatorial background is larger than 10% over the entire mass range. Simulations of di-electrons from light-meson decays and heavy-flavor decays (charmonium and open charm correlation) are found to describe the data. The extracted omega -> e(+) e(-) invariant yields are consistent with previous measurements. The mid-rapidity yields (dN/dy) of phi and J/psi are extracted through their di-electron decay channels and are consistent with the previous measurements of phi -> K+ K- and J/psi -> e(+) e(-). Our results suggest a new upper limit of the branching ratio of the eta -> e(+) e(-) of 1.7 x 10(-5) at the 90% confidence level.
Published: 2012

15. Energy and system-size dependence of two- and four-particlev2measurements in heavy-ion collisions atsNN=62.4and 200 GeV and their implications on flow fluctuations and nonflow

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, 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, 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, X. Cui, A. Davila Leyva, L. C. De Silva, R. R. Debbe, T. G. Dedovich, J. Deng, A. A. Derevschikov, R. Derradi de Souza, L. Didenko, P. Djawotho, X. Dong, J. L. Drachenberg, J. E. Draper, C. M. Du, 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, 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, G. W. Hoffmann, D. J. Hofman, B. Huang, H. Z. Huang, T. J. Humanic, L. Huo, G. Igo, 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, 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, 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, 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, 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, J. Pluta, D. Plyku, N. Poljak, J. Porter, A. M. Poskanzer, 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, J. Schaub, A. M. Schmah, N. Schmitz, T. R. Schuster, J. Seele, J. Seger, I. Selyuzhenkov, P. Seyboth, N. Shah, E. Shahaliev, M. Shao, B. Sharma, 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. de Souza, H. M. Spinka, B. Srivastava, T. D. S. Stanislaus, 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, B. A. Trzeciak, 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, X. Zhu, Y. H. Zhu, and Y. Zoulkarneeva
Subjects: Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, media_common.quotation_subject, Star (game theory), Elliptic flow, 01 natural sciences, Azimuth, Nuclear physics, 0103 physical sciences, Particle, Eccentricity (behavior), 010306 general physics, Anisotropy, Cumulant, Energy (signal processing), media_common
Abstract: We present STAR measurements of azimuthal anisotropy by means of the two- and four-particle cumulants v2 (v2{; ; 2}; ; and v2{; ; 4}; ; ) for Au+Au and Cu+Cu collisions at center-of-mass energies √sNN=62.4 and 200 GeV. The difference between v2{; ; 2}; ; 2 and v2{; ; 4}; ; 2 is related to v2 fluctuations (σv2) and nonflow (δ2). We present an upper limit to σv2/v2. Following the assumption that eccentricity fluctuations σɛ dominate v2 fluctuations σv2/v2≈σɛ/ɛ we deduce the nonflow implied for several models of eccentricity fluctuations that would be required for consistency with v2{; ; 2}; ; and v2{; ; 4}; ; . We also present results on the ratio of v2 to eccentricity.
Published: 2012

16. Measurement of theW→eνandZ/γ*→e+e−production cross sections at mid-rapidity in proton-proton collisions ats=500 GeV

Author: P. Chung, Wei Xie, J. Joseph, G. M.S. Vasconcelos, Y. Pandit, N. Schmitz, E. Shahaliev, J. W. Harris, J. L. Drachenberg, H. Bichsel, G. Odyniec, Y. Zoulkarneeva, C. Zhong, Y. F. Wu, Olga Evdokimov, Barbara Antonina Trzeciak, Q. Wang, N. R. Sahoo, T. R. Schuster, P. Yepes, A. Davila Leyva, A. H. Tang, D. R. Gangadharan, S. K. Gupta, J. L. Romero, E. Finch, C-Q. Li, I. Bunzarov, Jay Roberts, O. I. Mall, R. P. Scharenberg, Christina Markert, M. A.C. Lamont, L-X. Han, P. Huck, D. Smirnov, H. W. Ke, H. S. Matis, Anthony Robert Timmins, X. Li, Adam Ryszard Kisiel, J. Engelage, A. Luszczak, H. J. Crawford, Y. Yi, J. Rusnak, C. A. Whitten, L. Ruan, Marcelo Gameiro Munhoz, D. J. Prindle, W. W. Jacobs, J. Lauret, L. Li, J. Seele, J. M. Landgraf, Y. A. Pan, P. Seyboth, J. G. Cramer, R. Corliss, Russell Richard Betts, R. Lednicky, T. Tarnowsky, Leszek Adamczyk, J. C. Dunlop, D. G. Underwood, R. Derradi de Souza, M. Strikhanov, P. Djawotho, J. Konzer, B. Haag, A. M. Poskanzer, Zubayer Ahammed, M. J. LeVine, I. G. Alekseev, Donika Plyku, P. R. Pujahari, C. B. Powell, H. Z. Huang, S. Vokal, M. J. M. Codrington, M. Calderon De La Barca Sanchez, F. Liu, Mariusz Przybycien, A. Kechechyan, R. Cendejas, J. Cheng, T. J. M. Symons, M. A. Lisa, Xiaofeng Luo, Zebo Tang, L. Kotchenda, Guo-Liang Ma, E. W. Oldag, William Axel Leight, D. Thein, L. C. De Silva, Janusz Chwastowski, T. S. McShane, Jongmin Lee, R. L. Ray, J. Putschke, J. Kiryluk, J. H. Chen, Xiangming Sun, G. Wang, H. Qiu, M. Tokarev, T. Ljubicic, H. Caines, Sudhir Raniwala, S. R. Klein, Q. Y. Shou, Z. P. Zhang, A. S. Hirsch, P. Kravtsov, A. M. Schmah, S. Dhamija, C. Perkins, R. D. Majka, J. Y. Chen, W. Borowski, J. Turnau, B. D. Anderson, L. E. Dunkelberger, D. L. Olson, Q. H. Xu, X. L. Wang, E. C. Aschenauer, S. Margetis, Thorsten Sven Kollegger, Z. J. Sun, N. K. Pruthi, X. Dong, J. Schambach, T. G. Dedovich, G. Eppley, J. Pluta, S. K. Pal, Justin Stevens, Y. J. Sun, T. D. S. Stanislaus, M. K. Mustafa, W. Li, B. Huang, Rene Bellwied, S. Heppelmann, Y. H. Zhu, L. M. Lima, E. P. Sichtermann, S. Kabana, Y. P. Viyogi, Y. Li, R. E. Tribble, Jize Zhao, Gerald W Hoffmann, M. Shao, G. Van Buren, H. H. Wieman, J. Balewski, Rashmi Raniwala, R. Fatemi, Michael Joseph Betancourt, R. N. Singaraju, L. Huo, Claude Andre Pruneau, T. J. Humanic, D. P. Mahapatra, K. Krueger, L. Eun, S. S. Shi, C. D. Anson, J. A. Vanfossen, T. Ullrich, J. B. Zhang, P. Ostrowski, J. E. Draper, C. M. Du, H. S. Xu, Bedangadas Mohanty, M. Cherney, Zhigang Xiao, R. Varma, James Prewitt Hays-Wehle, Lokesh Kumar, M. Sharma, B. S. Page, Xiangyuan Cui, W. Christie, D. P. Kikola, H. Pei, S. Bueltmann, B. Stringfellow, R. G. Fersch, W. M. Zhang, Li-Yi Chen, B. Morozov, Xuan Zhang, Janet Elizabeth Seger, I. Koralt, A. Dion, M. Wada, N. Xu, P. Filip, R. S. Longacre, Y. G. Ma, W. Peryt, Elena Bruna, A. K. Bhati, L. V. Nogach, Anju Bhasin, D. Keane, W. Xu, R. P. Redwine, Hanna Paulina Zbroszczyk, K. Kang, Jian Deng, G. Van Nieuwenhuizen, Nikolai Smirnov, R. Stock, Wolfgang Korsch, P. Pile, G. D. Westfall, A. Lebedev, L. G. Efimov, M. Zawisza, H. M. Spinka, F. Videbæk, G. Igo, G. Agakishiev, D. R. Beavis, T. K. Nayak, G. Webb, B. Sharma, Sukalyan Chattopadhyay, J. Bouchet, Xiaofeng Zhu, A. Banerjee, F. Ding, I. K. Yoo, D. Cebra, K. Kauder, J. Porter, J. Butterworth, Y. Panebratsev, F. Zhao, D. Grosnick, Chitrasen Jena, A. Ogawa, Y. P. Lu, L. H. Tarini, H. F. Chen, Thomas A. Trainor, E. G. Judd, L. Koroleva, Z. Barnovska, W. J. Llope, Jaroslav Bielcik, D. Tlusty, I. G. Bordyuzhin, Mirko Planinic, Michal Sumbera, R. A.N. Oliveira, C. K. Riley, A. A. P. Suaide, Rolf K. Reed, Y. N. Gorbunov, O. Hajkova, S. W. Wissink, Y. Zhang, O. V. Rogachevskiy, Nikola Poljak, J. Alford, A. Ohlson, O. D. Tsai, D. D. Koetke, M. Elnimr, L. Xue, V. A. Kizka, J. H. Thomas, S. Fazio, W. Guryn, M. C. Cervantes, Y. Fisyak, U. G. Desouza, K. Oh, O. G. Grebenyuk, J. Fedorisin, Zhiming Li, D. Kettler, Sevil Salur, G. S. Averichev, Haiyan Wang, S. Horvat, A. Szanto de Toledo, J. Kapitan, M. K. Mitrovski, X. Z. Cai, M. J. Skoby, Frank Jm Geurts, J. C. Webb, Jifa Tian, R. Witt, T. Pawlak, W. Witzke, Y. Mohammed, A. V. Alakhverdyants, S. H. Zhang, S. Mioduszewski, A. Sarkar, David Jonathan Hofman, H. Masui, Donald M. McDonald, Prithwish Tribedy, B. K. Srivastava, K. Yip, J. S. Wang, R. R. Debbe, Sergey Voloshin, J. Takahashi, Jana Bielcikova, S. G. Steadman, P. Sorensen, Y. Wang, B. Pawlik, M. Naglis, L. Didenko, A. V. Brandin, Basanta Kumar Nandi, K. Xin, A. Kesich, J. Sandweiss, D. Solanki, B. Schmidke, I. Sakrejda, Y. Yang, S. LaPointe, Nilay Shah, T. P. Burton, Y. Xu, P. Chaloupka, Z. J. Xu, S. Trentalange, A. Chikanian, Vitaly Okorokov, Bernd Surrow, E. Sangaline, D. Arkhipkin, A. Hamed, C. A. Gagliardi, M. Pachr, Madan M. Aggarwal, Fuqiang Wang, A. Vossen, L. C. Bland, A. Sandacz, S. G. Brovko, M. C. Suarez, D. N. Svirida, Stephen V. Gliske, H. G. Ritter, and Nasim
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Proton, 010308 nuclear & particles physics, Parton, Electron, 7. Clean energy, 01 natural sciences, Nuclear physics, 0103 physical sciences, Rapidity, 010306 general physics, Relativistic Heavy Ion Collider, STAR detector, Lepton, Boson
Abstract: We report measurements of the charge-separated W+(-)→e+(- )+νe(ν e) and Z/γ*→e+e- production cross sections at mid-rapidity in proton-proton collisions at √s=500 GeV. These results are based on 13.2 pb-1 of data recorded in 2009 by the STAR detector at RHIC. Production cross sections for W bosons that decay via the eν channel were measured to be σ(pp→W+X)·BR(W+→e+νe)=117.3±5.9(stat)±6.2(syst)±15.2(lumi) pb, and σ(pp→W-X)·BR(W-→e-ν e)=43.3±4.6(stat)± 3.4(syst) ±5.6(lumi) pb. For Z/γ* production, σ(pp→Z/γ*X)·BR(Z/γ*→e+e- )=7.7±2.1(stat)-0.9+0.5(syst)±1.0(lumi) pb was measured for di- lepton invariant masses me+e- between 70 and 110 GeV/c2. First measurements of the W cross section ratio, σ(pp→W+X)/σ(pp→W- X), at √s=500 GeV are also reported. Theoretical predictions, calculated using recent parton distribution functions, are found to agree with the measured cross sections.
Published: 2012

17. Directed Flow of Identified Particles inAu+AuCollisions atSNN=200 GeVat RHIC

Author: M. Tokarev, T. D. S. Stanislaus, H. H. Wieman, Nasim, A. M. Poskanzer, B. Haag, A. Kechechyan, R. Cendejas, E. P. Sichtermann, L. Kotchenda, R. S. Longacre, David Jonathan Hofman, Russell Richard Betts, J. Balewski, J. L. Drachenberg, Vitaly Okorokov, Bernd Surrow, H. Z. Huang, S. Vokal, D. Tlusty, I. G. Bordyuzhin, Mirko Planinic, Rashmi Raniwala, Claude Andre Pruneau, F. Videbæk, S. K. Gupta, H. Masui, G. Webb, Sergey Voloshin, Xiangming Sun, P. Chung, Wei Xie, M. Calderon De La Barca Sanchez, J. Joseph, J. Takahashi, G. Igo, Zebo Tang, Janusz Chwastowski, D. G. Underwood, J. Putschke, T. Ullrich, G. Wang, Sukalyan Chattopadhyay, G. M.S. Vasconcelos, Y. N. Gorbunov, Y. Wang, O. Hajkova, C. A. Gagliardi, T. S. McShane, Olga Evdokimov, Barbara Antonina Trzeciak, J. Kiryluk, J. H. Chen, P. Huck, A. Chikanian, I. K. Yoo, Stephen V. Gliske, B. Sharma, J. Bouchet, C. M. Du, B. Huang, M. Pachr, Y. Pandit, W. J. Llope, K. Kauder, S. Dhamija, H. S. Xu, N. Schmitz, Jay Roberts, D. R. Gangadharan, William Axel Leight, Chitrasen Jena, Thorsten Sven Kollegger, E. Shahaliev, J. Butterworth, K. Yip, N. Xu, Anthony Robert Timmins, Adam Ryszard Kisiel, H. Pei, C. Perkins, J. Cheng, T. J. M. Symons, Z. J. Sun, Y. P. Lu, J. S. Wang, S. Heppelmann, W. Xu, Jaroslav Bielcik, Wolfgang Korsch, Haiyan Wang, H. J. Crawford, S. R. Klein, L. E. Dunkelberger, P. Filip, L. C. De Silva, D. L. Olson, B. D. Anderson, P. R. Pujahari, C. B. Powell, M. K. Mustafa, L. Eun, H. W. Ke, R. R. Debbe, J. B. Zhang, J. E. Draper, J. Porter, R. Fatemi, Michael Joseph Betancourt, E. G. Judd, Y. F. Wu, I. Koralt, O. V. Rogachevskiy, Q. H. Xu, X. Z. Cai, Xiaofeng Zhu, K. Krueger, Y. Li, N. K. Pruthi, C. D. Anson, S. Bueltmann, J. A. Vanfossen, M. Shao, Y. X. Pan, G. Van Buren, D. D. Koetke, J. Alford, L. V. Nogach, P. Seyboth, A. Ogawa, H. G. Ritter, H. F. Chen, Thomas A. Trainor, S. S. Shi, L. Xue, Jana Bielcikova, W. Guryn, G. Eppley, S. G. Steadman, D. P. Mahapatra, C-Q. Li, Madan M. Aggarwal, G. Van Nieuwenhuizen, P. Sorensen, Bedangadas Mohanty, M. Cherney, Lokesh Kumar, R. P. Scharenberg, Christina Markert, J. Pluta, E. Sangaline, Fuqiang Wang, D. Arkhipkin, Leszek Adamczyk, J. C. Dunlop, R. N. Singaraju, Elena Bruna, L. Huo, P. Pile, G. D. Westfall, J. Engelage, W. Li, Y. G. Ma, W. Peryt, H. S. Matis, R. Derradi de Souza, J. L. Romero, O. G. Grebenyuk, M. J. Skoby, Frank Jm Geurts, L. Li, A. Hamed, A. Ohlson, L. H. Tarini, R. G. Fersch, L. Didenko, Zubayer Ahammed, M. J. LeVine, W. W. Jacobs, A. Vossen, J. Fedorisin, Xiaofeng Luo, J. Turnau, Zhiming Li, Rene Bellwied, J. Lauret, E. Finch, Jifa Tian, Guo-Liang Ma, Y. H. Zhu, I. Sakrejda, L. M. Lima, R. E. Tribble, M. Wada, R. Lednicky, M. J. M. Codrington, T. Tarnowsky, P. Djawotho, Jize Zhao, J. C. Webb, J. Seele, Gerald W Hoffmann, R. A.N. Oliveira, Q. Y. Shou, T. G. Dedovich, Z. P. Zhang, Z. Barnovska, S. Horvat, A. Szanto de Toledo, A. S. Hirsch, C. K. Riley, S. H. Zhang, P. Kravtsov, A. M. Schmah, J. Kapitan, J. M. Landgraf, Michal Sumbera, A. A. P. Suaide, M. K. Mitrovski, T. P. Burton, Y. Yang, D. Solanki, T. Pawlak, W. Witzke, S. LaPointe, Y. Mohammed, Y. Fisyak, R. Witt, A. V. Alakhverdyants, S. W. Wissink, Nilay Shah, A. Sarkar, Y. Zhang, K. Oh, L. Koroleva, S. Mioduszewski, Xuan Zhang, A. V. Brandin, Nikola Poljak, K. Xin, Donald M. McDonald, Prithwish Tribedy, B. K. Srivastava, M. Strikhanov, A. Kesich, Hanna Paulina Zbroszczyk, J. Konzer, D. R. Beavis, L. C. Bland, F. Zhao, Y. J. Sun, J. W. Harris, O. I. Mall, M. A.C. Lamont, L-X. Han, Zhigang Xiao, J. Sandweiss, M. Sharma, Xiangyuan Cui, W. Christie, S. Kabana, Y. P. Viyogi, Y. Xu, W. M. Zhang, T. J. Humanic, S. G. Brovko, P. Yepes, A. Davila Leyva, P. Chaloupka, Z. J. Xu, A. H. Tang, X. Li, B. Morozov, R. Varma, James Prewitt Hays-Wehle, M. C. Suarez, D. N. Svirida, I. Bunzarov, Y. Yi, J. Rusnak, B. S. Page, D. P. Kikola, Janet Elizabeth Seger, C. A. Whitten, B. Stringfellow, S. Trentalange, L. Ruan, A. Luszczak, V. A. Kizka, J. H. Thomas, J. G. Cramer, B. Pawlik, R. Corliss, M. Naglis, Anju Bhasin, U. G. Desouza, E. W. Oldag, R. P. Redwine, K. Kang, Basanta Kumar Nandi, A. Lebedev, D. Kettler, G. S. Averichev, Li-Yi Chen, F. Liu, Mariusz Przybycien, R. D. Majka, J. Y. Chen, W. Borowski, J. Schambach, M. Zawisza, H. M. Spinka, A. Banerjee, Marcelo Gameiro Munhoz, D. J. Prindle, I. G. Alekseev, Donika Plyku, M. A. Lisa, F. Ding, Y. Panebratsev, H. Bichsel, D. Grosnick, G. Odyniec, Y. Zoulkarneeva, C. Zhong, Rolf K. Reed, Q. Wang, A. K. Bhati, D. Keane, Nikolai Smirnov, R. Stock, L. G. Efimov, T. K. Nayak, O. D. Tsai, N. R. Sahoo, T. R. Schuster, M. Elnimr, M. C. Cervantes, Sevil Salur, Hao Qiu, Jian Deng, G. Agakishiev, D. Cebra, X. L. Wang, S. Margetis, X. Dong, S. K. Pal, Justin Stevens, Jongmin Lee, R. L. Ray, T. Ljubicic, H. Caines, Sudhir Raniwala, and D. Thein
Subjects: Excitation function, Physics, 010308 nuclear & particles physics, Nuclear Theory, General Physics and Astronomy, Transport theory, Parton, 01 natural sciences, Nuclear physics, Pion, Flow (mathematics), Antiproton, 0103 physical sciences, Atomic physics, Nuclear Experiment, 010306 general physics, Recombination, Bar (unit)
Abstract: STAR's measurements of directed flow (v(1)) around midrapidity for pi(+/-), K-+/-, K-S(0), p, and (p) over bar in Au + Au collisions at root s(NN) = 200 GeV are presented. A negative v(1) (y) slope is observed for most of produced particles (pi(+/-), K-+/-, K-S(0), p, and (p) over bar). In 5%-30% central collisions, a sizable difference is present between the v(1)(y) slope of protons and antiprotons, with the former being consistent with zero within errors. The v(1) excitation function is presented. Comparisons to model calculations (RQMD, UrQMD, AMPT, QGSM with parton recombination, and a hydrodynamics model with a tilted source) are made. For those models which have calculations of v(1) for both pions and protons, none of them can describe v(1()y) forpions and protons simultaneously. The hydrodynamics model with a tilted source as currently implemented cannot explain the centrality dependence of the difference between the v(1)(y) slopes of protons and antiprotons.
Published: 2012

18. Identified Hadron Compositions inp+pandAu+AuCollisions at High Transverse Momenta atsNN=200 GeV

Author: D. Thein, Nasim, R. A.N. Oliveira, N. Xu, P. Filip, M. Tokarev, P. Pile, G. D. Westfall, C. D. Anson, Y. Fisyak, T. D. S. Stanislaus, W. L. Zhan, D. R. Gangadharan, H. H. Wieman, K. Oh, Frank Simon, V. A. Kizka, J. H. Thomas, P. R. Pujahari, H. Bichsel, C. B. Powell, Bedangadas Mohanty, U. G. Desouza, H. Z. Huang, S. Vokal, G. Odyniec, Y. Zoulkarneeva, G. Eppley, I. Selyuzhenkov, Vitaly Okorokov, G. Wang, C. Zhong, D. Kettler, R. G. Fersch, J. C. Dunlop, Zhigang Xiao, J. Pluta, O. I. Mall, W. Li, Rene Bellwied, Y. H. Zhu, L. M. Lima, R. E. Tribble, Jize Zhao, Gerald W Hoffmann, M. Shao, G. Van Buren, M. Sharma, T. J. Humanic, Bernd Surrow, Zubayer Ahammed, K. Yip, Xiangming Sun, B. Huang, J. Engelage, B. D. Anderson, M. A.C. Lamont, L-X. Han, N. K. Pruthi, J. S. Wang, A. M. Poskanzer, Q. Wang, M. J. LeVine, P. Chung, R. R. Debbe, N. G. Minaev, S. S. Shi, M. Wada, L. Kotchenda, Z. J. Sun, G. S. Averichev, N. R. Sahoo, A. Kechechyan, T. R. Schuster, Russell Richard Betts, Wei Xie, X. Li, H. G. Ritter, D. G. Underwood, S. G. Steadman, Q. Y. Shou, Premomoy Ghosh, C. A. Gagliardi, M. Pachr, R. Cendejas, J. M. Landgraf, Anik Gupta, Anju Bhasin, R. Varma, James Prewitt Hays-Wehle, J. L. Drachenberg, H. Pei, Hao Qiu, J. Joseph, S. K. Gupta, P. Seyboth, J. Rusnak, R. S. Longacre, J. Porter, R. P. Redwine, J. Kiryluk, J. H. Chen, B. S. Page, Y. G. Ma, W. Peryt, C. A. Whitten, L. Ruan, Olga Evdokimov, Barbara Antonina Trzeciak, G. M.S. Vasconcelos, K. Kang, Sergey Voloshin, D. P. Kikola, Lee Stuart Barnby, O. D. Tsai, M. Strikhanov, M. K. Mustafa, J. Konzer, A. Lebedev, M. Naglis, L. H. Tarini, R. Corliss, Michal Sumbera, A. A. P. Suaide, Jaroslav Bielcik, W. J. Llope, B. Stringfellow, Jorn Henning Putschke, L. Koroleva, M. J. Skoby, Frank Jm Geurts, T. S. McShane, Y. Wang, Y. Li, S. Bueltmann, Jian Deng, Jay Roberts, I. Koralt, R. Derradi de Souza, J. Sandweiss, A. V. Brandin, Y. Pandit, G. Igo, L. V. Nogach, A. Ohlson, O. V. Rogachevskiy, Jifa Tian, Ermes Braidot, J. Cheng, M. Elnimr, T. J. M. Symons, Ross Milner, M. C. Cervantes, J. Bouchet, G. Van Nieuwenhuizen, Mitali Mondal, M. J. M. Codrington, D. Cebra, K. Kauder, D. D. Koetke, Matthew Walker, N. Schmitz, D. Solanki, M. Estienne, L. C. De Silva, L. Xue, D. P. Mahapatra, Anthony Robert Timmins, D. A. Morozov, Haiyan Wang, Adam Ryszard Kisiel, V. Fine, S. W. Wissink, Li-Yi Chen, H. W. Ke, Xiangyuan Cui, W. Christie, H. J. Crawford, S. H. Zhang, Y. J. Sun, Xuan Zhang, X. Z. Cai, E. V. Lukashov, Basanta Kumar Nandi, R. Fatemi, Michael Joseph Betancourt, Q. H. Xu, E. Shahaliev, W. M. Zhang, Andrey Vasiliev, Marcelo Gameiro Munhoz, D. J. Prindle, Hanna Paulina Zbroszczyk, Nikola Poljak, Thorsten Sven Kollegger, B. Haag, K. Krueger, M. Zawisza, H. M. Spinka, Elena Bruna, David Jonathan Hofman, H. Masui, S. Kabana, Y. P. Viyogi, J. A. Vanfossen, L. C. Bland, I. Sakrejda, R. N. Singaraju, L. Huo, B. Morozov, D. R. Beavis, I. G. Alekseev, Janet Elizabeth Seger, Donika Plyku, A. Szanto de Toledo, Zebo Tang, A. P. Meschanin, J. Kapitan, S. Heppelmann, M. A. Lisa, M. K. Mitrovski, F. Zhao, M. Cherney, Lokesh Kumar, J. Takahashi, J. G. Cramer, Y. Yang, S. G. Brovko, Sevil Salur, F. Liu, S. LaPointe, T. Pawlak, A. Gordon, Nilay Shah, S. B. Nurushev, W. Witzke, Guo-Liang Ma, Y. Mohammed, I. K. Yoo, R. Witt, A. V. Alakhverdyants, C. Perkins, T. G. Dedovich, M. C. Suarez, D. N. Svirida, J. B. Zhang, J. E. Draper, Y. F. Wu, A. Sarkar, A. Chikanian, S. Mioduszewski, T. Peitzmann, Y. Panebratsev, D. Grosnick, R. D. Majka, J. Y. Chen, E. W. Oldag, W. Borowski, J. Schambach, Donald M. McDonald, E. G. Judd, Prithwish Tribedy, B. K. Srivastava, Yi Zhang, J. Alford, Rolf K. Reed, Z. P. Zhang, E. Sangaline, D. Arkhipkin, A. Hamed, W. Guryn, A. S. Hirsch, P. Kravtsov, O. G. Grebenyuk, A. M. Schmah, A. K. Bhati, D. Keane, J. Fedorisin, Nikolai Smirnov, R. Stock, J. L. Romero, L. G. Efimov, E. Finch, T. K. Nayak, T. P. Burton, F. Videbæk, G. Webb, Sukalyan Chattopadhyay, Y. Xu, P. Chaloupka, Chitrasen Jena, Z. J. Xu, S. Trentalange, Y. P. Lu, W. Xu, Wolfgang Korsch, Xiaofeng Zhu, A. Ogawa, H. F. Chen, Thomas A. Trainor, C-Q. Li, R. P. Scharenberg, Christina Markert, H. S. Matis, W. W. Jacobs, J. Lauret, R. Lednicky, T. Tarnowsky, P. Djawotho, D. Tlusty, I. G. Bordyuzhin, Mirko Planinic, Y. N. Gorbunov, O. Hajkova, M. Calderon De La Barca Sanchez, J. W. Harris, P. Yepes, A. Davila Leyva, X. G. Luo, A. H. Tang, I. Bunzarov, L. Li, J. Seele, Jana Bielcikova, P. Sorensen, G. Agakishiev, L. Didenko, Zhiming Li, J. C. Webb, P. Fachini, William Axel Leight, S. R. Klein, D. L. Olson, A. A. Derevschikov, Jongmin Lee, R. L. Ray, T. Ljubicic, H. Caines, Sudhir Raniwala, X. L. Wang, S. Margetis, X. Dong, S. K. Pal, Justin Stevens, E. P. Sichtermann, J. Balewski, Rashmi Raniwala, Claude Andre Pruneau, T. Ullrich, C. M. Du, H. S. Xu, L. Eun, Madan M. Aggarwal, and Fuqiang Wang
Subjects: Physics, Energy loss, Particle physics, 010308 nuclear & particles physics, Hadron, General Physics and Astronomy, Parton, 01 natural sciences, Nuclear physics, Casimir effect, Transverse plane, 0103 physical sciences, Transverse momentum, Fragmentation function, Yield ratio, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics
Abstract: We report transverse momentum (p(T) = 8 GeV/c are measured to be similar to the p + p results, despite the expected Casimir effect for parton energy loss.
Published: 2012

19. Strangeness Enhancement in Cu-Cu and Au-Au Collisions atsNN=200 GeV

Author: L. Kotchenda, Bedangadas Mohanty, E. P. Sichtermann, R. G. Fersch, J. Balewski, Rashmi Raniwala, Claude Andre Pruneau, T. Ullrich, C. M. Du, H. S. Xu, L. Eun, M. Calderon De La Barca Sanchez, M. Wada, R. Fatemi, Michael Joseph Betancourt, M. K. Mustafa, K. Krueger, T. S. McShane, D. P. Mahapatra, Jongmin Lee, R. L. Ray, T. Ljubicic, H. Caines, Sudhir Raniwala, J. A. Vanfossen, X. L. Wang, C. Zhong, Thorsten Sven Kollegger, S. Heppelmann, X. Dong, S. K. Pal, Justin Stevens, M. Cherney, Lokesh Kumar, Matthew Walker, F. Liu, J. B. Zhang, D. D. Koetke, J. E. Draper, Y. J. Sun, J. L. Romero, T. P. Burton, R. Manweiler, Hongfang Liu, J. Engelage, R. D. Majka, Li-Yi Chen, J. Y. Chen, W. Borowski, S. Margetis, J. Schambach, S. Kabana, E. Finch, A. M. Poskanzer, Premomoy Ghosh, J. M. Landgraf, Y. P. Viyogi, Xiangyuan Cui, W. Christie, David Jonathan Hofman, H. Masui, F. Videbæk, M. Zawisza, H. M. Spinka, Mateusz Andrzej Ploskon, R. Witt, G. Webb, Q. H. Xu, A. Kechechyan, W. M. Zhang, Andrey Vasiliev, L. Li, S. Mioduszewski, R. A.N. Oliveira, B. Morozov, J. Seele, M. Krus, R. Cendejas, J. Porter, Peter Martin Jacobs, Janet Elizabeth Seger, O. I. Mall, Madan M. Aggarwal, Anju Bhasin, J. Takahashi, D. Thein, Fuqiang Wang, R. P. Redwine, M. A.C. Lamont, L-X. Han, Donald M. McDonald, S. B. Nurushev, L. H. Tarini, J. W. Harris, Prithwish Tribedy, Chitrasen Jena, A. Lebedev, H. Pei, Y. Fisyak, E. Hjort, B. K. Srivastava, R. N. Singaraju, L. Huo, Jana Bielcikova, A. P. Meschanin, Y. F. Wu, M. Tokarev, K. Oh, L. Koroleva, Yong Xu, Y. P. Lu, P. Yepes, A. Davila Leyva, S. Chattopadhyay, B. V.K.S. Potukuchi, W. Xu, Wolfgang Korsch, X. G. Luo, Ross Milner, A. H. Tang, G. Wang, P. Seyboth, W. J. Llope, I. Bunzarov, Jian Deng, P. Sorensen, T. D. S. Stanislaus, G. Agakishiev, Zhigang Xiao, M. Sharma, H. H. Wieman, I. Koralt, Peter Graham Jones, R. Derradi de Souza, S. K. Gupta, D. Cebra, N. G. Minaev, M. Estienne, Kejun Kang, L. V. Nogach, W. L. Zhan, A. Ohlson, Xiaofeng Zhu, I. K. Yoo, Y.Y. Li, Frank Simon, Marcelo Gameiro Munhoz, D. J. Prindle, G. Van Nieuwenhuizen, J. H. Thomas, U. G. Desouza, Xuan Zhang, Jie Liu, Ermes Braidot, P. Chung, A. Ogawa, M. J. M. Codrington, L. Didenko, I. G. Alekseev, Donika Plyku, H. F. Chen, M. A. Lisa, V. Fine, Thomas A. Trainor, E. G. Judd, Anthony Robert Timmins, Adam Ryszard Kisiel, Wei Xie, Hanna Paulina Zbroszczyk, H. J. Crawford, H. Bichsel, G. Odyniec, Y. Zoulkarneeva, E. V. Lukashov, D. R. Beavis, J. Joseph, William Axel Leight, J. G. Cramer, G. M.S. Vasconcelos, Q. Wang, J. L. Drachenberg, Olga Evdokimov, Barbara Antonina Trzeciak, N. R. Sahoo, Haiyan Wang, S. R. Klein, Y. Pandit, T. R. Schuster, N. L. Subba, D. Kettler, N. Schmitz, E. Shahaliev, F. Zhao, D. L. Olson, C-Q. Li, R. P. Scharenberg, Christina Markert, X. Z. Cai, Jay Roberts, H. Z. Huang, S. Vokal, G. S. Averichev, A. A. Derevschikov, H. W. Ke, R. S. Longacre, M. Shao, G. Van Buren, I. Selyuzhenkov, Michal Sumbera, A. A. P. Suaide, Vitaly Okorokov, Bernd Surrow, S. S. Shi, E. W. Oldag, S. W. Wissink, A. Bridgeman, G. Igo, J. Kiryluk, Nikola Poljak, J. H. Chen, J. Bouchet, Russell Richard Betts, J. Schaub, K. Kauder, J. M. Nelson, Zhenyu Zhang, D. A. Morozov, Z. J. Sun, D. G. Underwood, B. Haag, W. Peryt, J. Cheng, T. J. M. Symons, Zhiming Li, Zebo Tang, A. K. Bhati, L. C. De Silva, Sergey Voloshin, D. Keane, T. G. Dedovich, Nikolai Smirnov, R. Stock, J. C. Dunlop, A. Szanto de Toledo, L. G. Efimov, J. Kapitan, J. C. Webb, Zubayer Ahammed, S. M. Dogra, T. J. Humanic, M. J. LeVine, T. K. Nayak, T. Pawlak, W. Witzke, Y. Mohammed, A. V. Alakhverdyants, A. Sarkar, C. Perkins, O. D. Tsai, S. Bueltmann, J. Alford, Q. Y. Shou, W. Guryn, O. G. Grebenyuk, M. Elnimr, M. C. Cervantes, J. Fedorisin, T. Peitzmann, A. G. Knospe, P. R. Pujahari, C. B. Powell, R. Varma, James Prewitt Hays-Wehle, B. S. Page, Anik Gupta, D. P. Kikola, Elena Bruna, B. Stringfellow, Sevil Salur, Y. Wang, M. J. Skoby, Frank Jm Geurts, Y. Panebratsev, D. Grosnick, V. Kouchpil, Jifa Tian, Guo-Liang Ma, Yi Zhang, Rolf K. Reed, S. H. Zhang, A. S. Hirsch, P. Kravtsov, Yinina Ma, A. M. Schmah, M. Strikhanov, J. Konzer, Ki-Seok Choi, J. Sandweiss, D. R. Gangadharan, K. Yip, J. S. Wang, R. R. Debbe, H. S. Matis, S. G. Steadman, W. W. Jacobs, J. Lauret, I. Sakrejda, X. Li, M. Naglis, J. Rusnak, C. A. Whitten, R. Lednicky, Feng Jin, L. Ruan, L. C. Bland, R. Corliss, Y. Yang, T. Tarnowsky, P. Djawotho, N. Xu, P. Filip, Basanta Kumar Nandi, M. K. Mitrovski, S. LaPointe, N. Li, P. Pile, G. D. Westfall, A. Gordon, Nilay Shah, S. G. Brovko, D. Tlusty, I. G. Bordyuzhin, Mirko Planinic, M. C. Suarez, D. N. Svirida, A. Chikanian, Xiangming Sun, B. Huang, V. Kizka, Hao Qiu, Y. N. Gorbunov, B. D. Anderson, O. Hajkova, E. Sangaline, D. Arkhipkin, A. Hamed, N. K. Pruthi, G. Eppley, D. Solanki, J. Pluta, W. Li, Rene Bellwied, Y. H. Zhu, L. M. Lima, R. E. Tribble, Jize Zhao, Gerald W Hoffmann, C. A. Gagliardi, M. Pachr, Jorn Henning Putschke, A. V. Brandin, M. Heinz, Lee Stuart Barnby, Jaroslav Bielcik, Nirbhay Kumar Behera, H. G. Ritter, O. V. Rogachevskiy, Mitali Mondal, L. Xue, P. Chaloupka, Z. J. Xu, S. Trentalange, and C. D. Anson
Subjects: Physics, Quantitative Biology::Neurons and Cognition, 010308 nuclear & particles physics, Hadron, General Physics and Astronomy, chemistry.chemical_element, Strangeness, Lambda, 01 natural sciences, Omega, Copper, Nuclear physics, chemistry, 0103 physical sciences, High Energy Physics::Experiment, Atomic physics, Nuclear Experiment, 010306 general physics, Nucleon, Relativistic Heavy Ion Collider, Bar (unit)
Abstract: We report new STAR measurements of midrapidity yields for the Lambda, (Lambda) over bar, K-S(0), Xi(-), (Xi) over bar (+), Omega(-), (Omega) over bar (+) particles in Cu + Cu collisions at root s(NN) = 200 GeV, and midrapidity yields for the Lambda, (Lambda) over bar, K-S(0) particles in Au + Au at root s(NN) = 200 GeV. We show that, at a given number of participating nucleons, the production of strange hadrons is higher in Cu + Cu collisions than in Au + Au collisions at the same center-of-mass energy. We find that aspects of the enhancement factors for all particles can be described by a parametrization based on the fraction of participants that undergo multiple collisions.
Published: 2012

20. ρ0photoproduction in AuAu collisions atsNN=62.4GeV measured with the STAR detector

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, 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, 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, J. Deng, A. A. Derevschikov, R. Derradi de Souza, L. Didenko, P. Djawotho, S. M. Dogra, X. Dong, J. L. Drachenberg, J. E. Draper, C. M. Du, 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, F. Geurts, P. Ghosh, Y. N. Gorbunov, A. Gordon, O. G. Grebenyuk, D. Grosnick, 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, 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, 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, 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, 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, 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. L. Ray, 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, J. Schaub, 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. deSouza, H. M. Spinka, B. Srivastava, T. D. S. Stanislaus, 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, S. Trentalange, R. E. Tribble, P. Tribedy, B. A. Trzeciak, 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, X. Zhu, Y. H. Zhu, and Y. Zoulkarneeva
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Meson, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, Nuclear Theory, Theoretical models, Virtual particle, 01 natural sciences, Nuclear physics, medicine.anatomical_structure, 0103 physical sciences, medicine, High Energy Physics::Experiment, Vector meson, Center of mass, Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider, Nucleus, STAR detector
Abstract: Vector mesons may be photoproduced in relativistic heavy-ion collisions when a virtual photon emitted by one nucleus scatters from the other nucleus, emerging as a vector meson. The STAR Collaboration has previously presented measurements of coherent rho(0) photoproduction at center of mass energies of 130 GeV and 200 GeV in AuAu collisions. Here, we present a measurement of the cross section at 62.4 GeV; we find that the cross section for coherent rho(0) photoproduction with nuclear breakup is 10.5 +/- 1.5 +/- 1.6mb at 62.4 GeV. The cross-section ratio between 200 GeV and 62.4 GeV is 4.4 +/- 0.6, less than is predicted by most theoretical models. It is, however, proportionally much larger than the previously observed 15% +/- 55% increase between 130 GeV and 200 GeV.
Published: 2012

21. Directed and elliptic flow of charged particles in Cu+Cu collisions atsNN=22.4GeV

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, 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, 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, null Cui, A. Davila Leyva, L. C. De Silva, R. R. Debbe, T. G. Dedovich, J. Deng, A. A. Derevschikov, R. Derradi de Souza, L. Didenko, P. Djawotho, S. M. Dogra, X. Dong, J. L. Drachenberg, J. E. Draper, C. M. Du, 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, 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, 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, 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, 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, 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, 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. L. Ray, 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, J. Schaub, 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. deSouza, H. M. Spinka, B. Srivastava, T. D. S. Stanislaus, 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, B. A. Trzeciak, 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, X. Zhu, Y. H. Zhu, and Y. Zoulkarneeva
Subjects: Physics, Nuclear and High Energy Physics, Range (particle radiation), Time projection chamber, Quantitative Biology::Neurons and Cognition, 010308 nuclear & particles physics, Elliptic flow, 01 natural sciences, Charged particle, Nuclear physics, 0103 physical sciences, Quark–gluon plasma, Particle, Atomic physics, Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider, STAR detector
Abstract: This paper reports results for directed flow v1 and elliptic flow v2 of charged particles in Cu + Cu collisions at √sNN=22.4 GeV at the Relativistic Heavy Ion Collider. The measurements are for the 0–60% most central collisions, using charged particles observed in the STAR detector. Our measurements extend to 22.4-GeV Cu + Cu collisions the prior observation that v1 is independent of the system size at 62.4 and 200 GeV and also extend the scaling of v1 with η/ybeam to this system. The measured v2(pT) in Cu + Cu collisions is similar for √sNN throughout the range 22.4 to 200 GeV. We also report a comparison with results from transport model (ultrarelativistic quantum molecular dynamics and multiphase transport model) calculations. The model results do not agree quantitatively with the measured v1(η), v2(pT), and v2(η).
Published: 2012

22. Directed flow of identified particles in Au+Au collisions at √[SNN]=200 GeV at RHIC

Author: L, Adamczyk, 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, A, Banerjee, Z, Barnovska, D R, Beavis, R, Bellwied, M J, Betancourt, R R, Betts, A, Bhasin, A K, Bhati, H, Bichsel, J, Bielcik, J, Bielcikova, L C, Bland, I G, Bordyuzhin, W, Borowski, J, Bouchet, A V, Brandin, S G, Brovko, E, Bruna, S, Bueltmann, I, Bunzarov, T P, Burton, J, Butterworth, X Z, Cai, H, Caines, M, Calderón de la Barca Sánchez, D, Cebra, R, Cendejas, M C, Cervantes, P, Chaloupka, S, Chattopadhyay, H F, Chen, J H, Chen, J Y, Chen, L, Chen, J, Cheng, M, Cherney, A, Chikanian, W, Christie, P, Chung, J, Chwastowski, M J M, Codrington, R, Corliss, J G, Cramer, H J, Crawford, X, Cui, A, Davila Leyva, L C, De Silva, R R, Debbe, T G, Dedovich, J, Deng, R, Derradi de Souza, S, Dhamija, L, Didenko, F, Ding, P, Djawotho, X, Dong, J L, Drachenberg, J E, Draper, C M, Du, L E, Dunkelberger, J C, Dunlop, L G, Efimov, M, Elnimr, J, Engelage, G, Eppley, L, Eun, O, Evdokimov, R, Fatemi, J, Fedorisin, R G, Fersch, P, Filip, E, Finch, Y, Fisyak, C A, Gagliardi, D R, Gangadharan, F, Geurts, S, Gliske, Y N, Gorbunov, O G, Grebenyuk, D, Grosnick, S, Gupta, W, Guryn, B, Haag, O, Hajkova, A, Hamed, L-X, Han, J W, Harris, J P, Hays-Wehle, S, Heppelmann, A, Hirsch, G W, Hoffmann, D J, Hofman, S, Horvat, B, Huang, H Z, Huang, P, Huck, T J, Humanic, L, Huo, G, Igo, W W, Jacobs, C, Jena, J, Joseph, E G, Judd, S, Kabana, K, Kang, J, Kapitan, K, Kauder, H W, Ke, D, Keane, A, Kechechyan, A, Kesich, D, Kettler, D P, Kikola, J, Kiryluk, A, Kisiel, V, Kizka, S R, Klein, D D, Koetke, T, Kollegger, J, Konzer, I, Koralt, L, Koroleva, W, Korsch, L, Kotchenda, P, Kravtsov, K, Krueger, L, Kumar, 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, W, Li, X, Li, Y, Li, Z M, Li, L M, Lima, M A, Lisa, F, Liu, T, Ljubicic, W J, Llope, R S, Longacre, Y, Lu, X, Luo, A, Luszczak, G L, Ma, Y G, Ma, D P, Mahapatra, R, Majka, O I, Mall, S, Margetis, C, Markert, H, Masui, H S, Matis, D, McDonald, T S, McShane, S, Mioduszewski, M K, Mitrovski, Y, Mohammed, B, Mohanty, B, Morozov, M G, Munhoz, M K, Mustafa, M, Naglis, B K, Nandi, Md, Nasim, T K, Nayak, L V, Nogach, 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 X, Pan, Y, Pandit, Y, Panebratsev, T, Pawlak, B, Pawlik, H, Pei, C, Perkins, W, Peryt, P, Pile, M, Planinic, J, Pluta, D, Plyku, N, Poljak, J, Porter, A M, Poskanzer, C B, Powell, D, Prindle, C, Pruneau, N K, Pruthi, M, Przybycien, P R, Pujahari, J, Putschke, H, Qiu, R, Raniwala, S, Raniwala, R L, Ray, R, Redwine, R, Reed, C K, Riley, 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, P, Seyboth, N, Shah, E, Shahaliev, M, Shao, B, Sharma, M, Sharma, S S, Shi, Q Y, Shou, E P, Sichtermann, R N, Singaraju, M J, Skoby, N, Smirnov, D, Solanki, P, Sorensen, U G, deSouza, H M, Spinka, B, Srivastava, T D S, Stanislaus, S G, Steadman, J R, Stevens, R, Stock, M, Strikhanov, B, Stringfellow, A A P, Suaide, M C, Suarez, 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, S, Trentalange, R E, Tribble, P, Tribedy, B A, Trzeciak, O D, Tsai, J, Turnau, T, Ullrich, D G, Underwood, G, Van Buren, G, van Nieuwenhuizen, J A, Vanfossen, R, Varma, G M S, Vasconcelos, F, Videbæk, Y P, Viyogi, S, Vokal, S A, Voloshin, A, Vossen, M, Wada, 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, K, Xin, H, Xu, N, Xu, Q H, Xu, W, Xu, Y, Xu, Z, Xu, L, Xue, Y, Yang, P, Yepes, Y, Yi, K, Yip, I-K, Yoo, M, Zawisza, H, Zbroszczyk, J B, Zhang, S, Zhang, W M, Zhang, X P, Zhang, Y, Zhang, Z P, Zhang, F, Zhao, J, Zhao, C, Zhong, X, Zhu, Y H, Zhu, and Y, Zoulkarneeva
Abstract: STAR's measurements of directed flow (v1) around midrapidity for π±, K±, KS0, p, and p[over ¯] in Au+Au collisions at √[sNN]=200 GeV are presented. A negative v1(y) slope is observed for most of produced particles (π±, K±, KS0, and p[over ¯]). In 5%-30% central collisions, a sizable difference is present between the v1(y) slope of protons and antiprotons, with the former being consistent with zero within errors. The v1 excitation function is presented. Comparisons to model calculations (RQMD, UrQMD, AMPT, QGSM with parton recombination, and a hydrodynamics model with a tilted source) are made. For those models which have calculations of v1 for both pions and protons, none of them can describe v1(y) for pions and protons simultaneously. The hydrodynamics model with a tilted source as currently implemented cannot explain the centrality dependence of the difference between the v1(y) slopes of protons and antiprotons.
Published: 2011

23. Identified hadron compositions in p+p and Au+Au collisions at high transverse momenta at √S(NN)=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, 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, L C, Bland, I G, Bordyuzhin, W, Borowski, J, Bouchet, E, Braidot, A V, Brandin, 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, P, Chaloupka, S, Chattopadhyay, H F, Chen, J H, Chen, J Y, Chen, L, Chen, J, Cheng, M, Cherney, A, Chikanian, W, Christie, P, Chung, M J M, Codrington, R, Corliss, J G, Cramer, H J, Crawford, X, Cui, A Davila, Leyva, L C, De Silva, R R, Debbe, T G, Dedovich, J, Deng, A A, Derevschikov, R Derradi, de Souza, L, Didenko, P, Djawotho, X, Dong, J L, Drachenberg, J E, Draper, C M, Du, J C, Dunlop, L G, Efimov, M, Elnimr, J, Engelage, G, Eppley, 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, F, Geurts, P, Ghosh, Y N, Gorbunov, A, Gordon, O G, Grebenyuk, D, Grosnick, A, Gupta, S, Gupta, W, Guryn, B, Haag, O, Hajkova, A, Hamed, L-X, Han, J W, Harris, J P, Hays-Wehle, S, Heppelmann, A, Hirsch, G W, Hoffmann, D J, Hofman, B, Huang, H Z, Huang, T J, Humanic, L, Huo, G, Igo, W W, Jacobs, C, Jena, 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, D D, Koetke, T, Kollegger, J, Konzer, I, Koralt, L, Koroleva, W, Korsch, L, Kotchenda, P, Kravtsov, K, Krueger, L, Kumar, 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, W, Li, X, Li, Y, Li, Z M, Li, L M, Lima, M A, Lisa, F, Liu, T, Ljubicic, W J, Llope, R S, Longacre, Y, Lu, E V, Lukashov, X, Luo, G L, Ma, Y G, Ma, D P, Mahapatra, R, Majka, O I, Mall, S, Margetis, C, Markert, H, Masui, H S, Matis, 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, Md, Nasim, T K, Nayak, 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, J, Pluta, D, Plyku, N, Poljak, J, Porter, A M, Poskanzer, 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, 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, deSouza, H M, Spinka, B, Srivastava, T D S, Stanislaus, S G, Steadman, J R, Stevens, R, Stock, M, Strikhanov, B, Stringfellow, A A P, Suaide, M C, Suarez, 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, S, Trentalange, R E, Tribble, P, Tribedy, B A, Trzeciak, 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, X, Zhu, Y H, Zhu, and Y, Zoulkarneeva
Abstract: We report transverse momentum (p(T)≤15 GeV/c) spectra of π(±), K(±), p, p[over ¯], K(S)(0), and ρ(0) at midrapidity in p+p and Au+Au collisions at √S(NN)=200 GeV. Perturbative QCD calculations are consistent with π(±) spectra in p+p collisions but do not reproduce K and p(p[over ¯]) spectra. The observed decreasing antiparticle-to-particle ratios with increasing p(T) provide experimental evidence for varying quark and gluon jet contributions to high-p(T) hadron yields. The relative hadron abundances in Au+Au at p(T)≳8 GeV/c are measured to be similar to the p+p results, despite the expected Casimir effect for parton energy loss.
Published: 2011

24. 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

25. 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

26. 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

27. 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

28. How vegetative is the vegetative state? Preserved semantic processing in VS patients--evidence from N 400 event-related potentials

Author: Paul W, Schoenle and W, Witzke
Subjects: Adult, Male, Cognition, Blinking, Brain Injuries, Persistent Vegetative State, Humans, Female, Middle Aged, Evoked Potentials, Language, Semantics
Abstract: Event-related potentials (ERPs) can provide valuable information about cognitive capabilities in severely brain-damaged patients. This study examined 120 patients with severe brain damage using event related potentials ERPs (N 400) to gain information about their remaining semantic processing capabilities and to contribute to differential diagnosis. Patients were classified into three diagnostic groups: patients in vegetative state (VS), patients in near vegetative state (NEVS) and patients not in vegetative state (NOVS). N400 ERPs were analyzed on an individual basis. All three groups could be differentiated by N400. While VS-patients as a group were least likely to show N400, some VS-patients (approx. 12%) showed clear semantic N400 potentials as an indication of semantic processing capabilities. Patients in NEVS showed significantly more intact semantic capabilities (76.74%) than the VS-group despite little clinical differences between the two groups. Thus, ERPs provide valuable information about patients with brain injury whose clinical conditions often do not allow a true assessment of their cognitive capabilities. Given these findings, we would espouse that both ethical and legal debate should take into account results of ERP studies of such patients.
Published: 2005

29. Contingent negative variation and attention in schizophrenic and depressed patients

Author: W. Witzke, Edith Holsboer-Trachsler, U. Gerhard, G. Naber, U. Hemmeter, S. Zechner, V. Dittmann, D.R. Heimberg, and V. Hobi
Subjects: Adult, Male, Psychosis, medicine.medical_specialty, Aging, Psychometrics, media_common.quotation_subject, Contingent Negative Variation, Electroencephalography, Audiology, Arousal, Schizophrenic Psychology, medicine, Humans, Attention, Evoked potential, Psychiatry, Biological Psychiatry, media_common, Psychiatric Status Rating Scales, Depressive Disorder, medicine.diagnostic_test, Middle Aged, medicine.disease, Contingent negative variation, Electrophysiology, Psychiatry and Mental health, Neuropsychology and Physiological Psychology, Schizophrenia, Female, Psychology, Vigilance (psychology)
Abstract: Contingent negative variation (CNV) is supposed to be a psychophysiological indicator of attention and arousal. Both have been reported to be deteriorated in schizophrenic and depressed patients. Thirty-four patients with major depression, 43 patients with schizophrenia and 49 healthy subjects were investigated during acute illness with a complex three-stimulus go/no-go task which requires different states of attention: trials consisted of three complex figures that were tachistoscopically presented. Three identical figures had to be confirmed by pressing a button (target condition). CNV was measured: (1) after the first figure waiting for the second (baseline condition), (2) after two identical figures waiting for the third (response-relevant condition), (3) after two different figures waiting for the third (response-irrelevant condition). The response-relevant condition compared to baseline significantly intensified CNV in healthy controls and to a minor extent in depressed patients but not in schizophrenics. In the response-relevant conditions in healthy controls, CNV was significantly reduced compared to the response-relevant condition. This clear discrimination between response-relevant and response-irrelevant conditions was not observed in either group of patients. Thus, the applied CNV paradigm was able to discriminate schizophrenic and depressed patients from healthy controls. Furthermore, subtle differences between schizophrenic and depressed patients were detected, reflected by the different CNV development across experimental conditions.
Published: 1999

30. The Role of the General Practitioner in the Care of Mentally Disturbed Subjects in the General Population — Results of the Upper Bavarian Study

Author: W. Witzke, Ingeborg Meller, and M. M. Fichter
Subjects: Adult, Male, Rural Population, medicine.medical_specialty, Urban Population, Population, 03 medical and health sciences, 0302 clinical medicine, medicine, Humans, Longitudinal Studies, 030212 general & internal medicine, education, Psychiatry, Referral and Consultation, Aged, education.field_of_study, business.industry, Incidence, Mental Disorders, Germany, West, Middle Aged, Mental illness, medicine.disease, Neuroticism, 030227 psychiatry, Psychiatry and Mental health, Cross-Sectional Studies, Social Class, Psychiatric consultation, Sample size determination, Female, Family Practice, business
Abstract: The role of the general practitioner in the care of mentally disturbed non institutionalised persons aged 20 years and older was examined. Data were based on the representative community sample of the Upper Bavarian Field Study with a sample size of 1495 interviewees — aged 20 years and older. The 5-year prevalence of mental illness according to the definition used was 32.8%. 38.5% of all persons, identified as cases, consulted their general practitioner because of psychiatric or emo tional problems. Females and the elderly were most likely to have received treatment by their general practitioner. The majority of treated persons were neurotic and psychosomatic patients. The general practitioner provided care for more psychiatric patients than the psychiatrist and for 25% of all "cases", without additional psychiatric consultation.
Published: 1989

31. Paper 39: In Situ Out-of-Roundness Measurement

Author: F. W. Witzke
Subjects: Crankshaft, Embryology, Engineering, business.product_category, business.industry, Mechanical engineering, Cell Biology, Fixture, Rod, Roundness (object), Machine tool, law.invention, law, Anatomy, business, Developmental Biology
Abstract: A new method is described for measurement of out-of-roundness characteristics of parts under conditions that are now considered extremely difficult or impossible. For example, it is now possible to measure very large parts while they are still mounted in the machine tool, on a makeshift inspection fixture, or even in an assembly. Typical of parts now being measured by this method are crankshaft journals and throw surfaces, piston pins, machine tool spindle shafts, mill rolls, and reactor fuel rods. No expensive masters, precision spindles, or special skills are required. Results are plotted and measured on polar charts such as used on the more conventional roundness gauge. Accuracy of the out-of-roundness measurement is within ±10 per cent for most parts.
Published: 1967

32. Psychotropic drug use in a representative community sample: the Upper Bavarian study

Author: Manfred M. Fichter, K. Leibl, W. Witzke, and H. Hippius
Subjects: Adult, Male, medicine.medical_specialty, Adolescent, Cross-sectional study, medicine.drug_class, Benzodiazepines, Sex Factors, Epidemiology, medicine, Humans, Psychiatric epidemiology, Psychiatry, Aged, Psychiatric Status Rating Scales, Benzodiazepine, Psychotropic Drugs, Extraversion and introversion, business.industry, Mental Disorders, Codeine, Age Factors, Germany, West, Middle Aged, Neuroticism, Antidepressive Agents, Psychiatry and Mental health, Psychotropic drug, Cross-Sectional Studies, Female, business, medicine.drug
Abstract: A sample of 1979 community residents aged 15 years and above was assessed in a major survey of health status and consumption of psychotropic medication. Interviews were conducted in the subjects' home by a psychiatrically trained physician, who actually inspected the subjects' medical supplies. Of all subjects 6.9% (4.3% of the males and 9.0% of the females) had used a drug containing a benzodiazepine at least once in the 4 weeks preceding the interview. In the same period 3.6% had taken a medication containing a barbiturate, 2.2% a medicine containing an opioid (mainly codeine), 1.8% had taken a neuroleptic drug, 1.5% an antidepressant, 0.8% a carbamine-acid derivative and 0.1% lithium. High use of psychotropic medication was associated with higher age, female sex, higher psychiatric morbidity, higher somatic morbidity, reduced work capacity and higher neuroticism but not with social class and not with the personality factor extra- or introversion.
Published: 1989

33. Verbreitung und Verlauf

Author: K. Leibl, I. Meller, W. Witzke, Jürgen Rehm, S. Weyerer, Horst Dilling, J. Karschny, M. M. Fichter, T. Eiberger, H.-U. Wittchen, H. Hippius, and J. Angst
Abstract: Die Einfuhrung des DSM-III (American Psychiatric Association 1980) und die bevorstehende 10. Revision der International Classification of Diseases (ICD-10; World Health Organization 1987) vollziehen einen nosologischen Wandel der Klassifikation psychiatrischer Phanomene. Dieser Entwicklung folgend prasentieren wir die Ergebnisse unserer psychiatrisch-epidemiologischen Felduntersuchung in Oberbayern bezogen auf den Bereich affektiver Storungen — depressive und Angsterkrankungen —, nachdem unsere Resultate bereits fruher insgesamt, bezogen auf die Diagnostik nach ICD-8 (Degkwitz et al. 1973), dargestellt sind (Dilling et al. 1984).
Published: 1988

34. Creep-rupture behavior of seven iron-base alloys after long term aging at 760/sup 0/C in low pressure hydrogen

Author: W. Witzke and J. Stephens
Published: 1980

35. The use of psychiatric facilities by depressives: results of the Upper Bavarian Study

Author: I. Meller, Manfred M. Fichter, W. Witzke, and S. Weyerer
Subjects: Adult, Male, medicine.medical_specialty, Social Environment, Consultation rate, Risk Factors, medicine, Humans, Psychiatric epidemiology, Psychiatry, Referral and Consultation, Depression (differential diagnoses), Ability to work, Depressive Disorder, Mental Disorders, Germany, West, Mental health, Community Mental Health Services, Psychiatry and Mental health, Cross-Sectional Studies, Personality Development, Sample size determination, Endogenous depression, Female, Psychology, Psychosocial, Clinical psychology
Abstract: Utilization of psychiatric facilities by noninstitutionalized persons aged 20 years and older, identified as "depressive cases", was examined. Data were based on the representative community sample of the Upper Bavarian follow-up field study with an original sample size of 1668 people. In the 5-year follow-up 1384 (83%) subjects were interviewed, while 80 subjects (4.8%) had died. The 5-year prevalence of depressive disorders, according to the definition used, was 10.3%. We analyzed which people with depressive disorders sought help from mental health professionals according to type of depressive disorder, sociodemographic data, psychosocial factors and course of disorder. The psychiatric treatment rate (in- or outpatient) was 23.9% of the depressive cases. The majority of treated persons were outpatients. Patients with the diagnosis of endogenous depression were most likely to have received psychiatric treatment. Limitation in the ability to work due to depression was the most important psychosocial factor influencing help-seeking behavior. The highest consultation rate in psychiatric facilities was obtained from the depressives who had grown up without their parents.
Published: 1989

36. Hypertension in depression

Author: N. Matussek, W. Witzke, and M. Nakagawara
Subjects: Risk, Depressive Disorder, medicine.medical_specialty, business.industry, Receptors, Adrenergic, alpha, Psychiatry and Mental health, Inheritance (object-oriented programming), Endocrinology, Internal medicine, Hypertension, medicine, Humans, business, Psychiatry, Biological Psychiatry, Depression (differential diagnoses)
Published: 1987

37. N400 predicts recovery from disorders of consciousness.

Author: Steppacher I, Eickhoff S, Jordanov T, Kaps M, Witzke W, and Kissler J
Subjects: Adult, Aged, Cognition Disorders diagnosis, Electroencephalography, Female, Follow-Up Studies, Humans, Male, Middle Aged, Predictive Value of Tests, Severity of Illness Index, Spectrum Analysis, Speech Disorders diagnosis, Cognition Disorders etiology, Consciousness Disorders complications, Evoked Potentials physiology, Recovery of Function physiology, Speech Disorders etiology
Abstract: Objective: Patients with the unresponsive wakefulness syndrome (UWS; formerly vegetative state) or in a minimally conscious state (MCS) open their eyes spontaneously but show no (UWS) or only marginal (MCS) signs of awareness. Because these states can become permanent, residual information processing capacities need to be determined, and reliable outcome predictors need to be found. We assessed higher-order cortical information processing in UWS or MCS in a large group of patients using electroencephalographic event-related potentials (ERPs) and determined their long-term prognostic value for recovery., Methods: Cognitive ERPs elicited by sound (P300) and speech (N400) were used to assess information processing in 92 behaviorally unresponsive patients diagnosed as in the state of either UWS (n=53) or MCS (n=39). ERPs were assessed with a clinical standard evaluation method and a computerized method, the t-continuous wavelet transform. The patients' clinical outcome was followed up between 2 and 14 years after discharge from the rehabilitation center., Results: Within the first year of the disease, many patients showed an intact P300 and several also an N400, indicating considerable residual information processing. At clinical follow-up, about 25% of the patients recovered and regained communicative capabilities. A highly significant relationship between N400, but not P300, presence and subsequent recovery was found., Interpretation: Results specify cognitive capabilities in disorders of consciousness, and determine their prognostic value. Specifically the N400 ERP is suggested as an important tool to assess information-processing capacities that can predict the likelihood of recovery of patients in UWS or MCS., (Copyright © 2012 American Neurological Association.)
Published: 2013
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38. Directed flow of identified particles in Au+Au collisions at √[SNN]=200 GeV at RHIC.

Author: Adamczyk L, Agakishiev G, Aggarwal MM, Ahammed Z, Alakhverdyants AV, Alekseev I, Alford J, Anderson BD, Anson CD, Arkhipkin D, Averichev GS, Balewski J, Banerjee A, Barnovska Z, Beavis DR, Bellwied R, Betancourt MJ, Betts RR, Bhasin A, Bhati AK, Bichsel H, Bielcik J, Bielcikova J, Bland LC, Bordyuzhin IG, Borowski W, Bouchet J, Brandin AV, Brovko SG, Bruna E, Bueltmann S, Bunzarov I, Burton TP, Butterworth J, Cai XZ, Caines H, Calderón de la Barca Sánchez M, Cebra D, Cendejas R, Cervantes MC, Chaloupka P, Chattopadhyay S, Chen HF, Chen JH, Chen JY, Chen L, Cheng J, Cherney M, Chikanian A, Christie W, Chung P, Chwastowski J, Codrington MJ, Corliss R, Cramer JG, Crawford HJ, Cui X, Davila Leyva A, De Silva LC, Debbe RR, Dedovich TG, Deng J, Derradi de Souza R, Dhamija S, Didenko L, Ding F, Djawotho P, Dong X, Drachenberg JL, Draper JE, Du CM, Dunkelberger LE, Dunlop JC, Efimov LG, Elnimr M, Engelage J, Eppley G, Eun L, Evdokimov O, Fatemi R, Fedorisin J, Fersch RG, Filip P, Finch E, Fisyak Y, Gagliardi CA, Gangadharan DR, Geurts F, Gliske S, Gorbunov YN, Grebenyuk OG, Grosnick D, Gupta S, Guryn W, Haag B, Hajkova O, Hamed A, Han LX, Harris JW, Hays-Wehle JP, Heppelmann S, Hirsch A, Hoffmann GW, Hofman DJ, Horvat S, Huang B, Huang HZ, Huck P, Humanic TJ, Huo L, Igo G, Jacobs WW, Jena C, Joseph J, Judd EG, Kabana S, Kang K, Kapitan J, Kauder K, Ke HW, Keane D, Kechechyan A, Kesich A, Kettler D, Kikola DP, Kiryluk J, Kisiel A, Kizka V, Klein SR, Koetke DD, Kollegger T, Konzer J, Koralt I, Koroleva L, Korsch W, Kotchenda L, Kravtsov P, Krueger K, Kumar L, Lamont MA, Landgraf JM, LaPointe S, Lauret J, Lebedev A, Lednicky R, Lee JH, Leight W, LeVine MJ, Li C, Li L, Li W, Li X, Li X, Li Y, Li ZM, Lima LM, Lisa MA, Liu F, Ljubicic T, Llope WJ, Longacre RS, Lu Y, Luo X, Luszczak A, Ma GL, Ma YG, Mahapatra DP, Majka R, Mall OI, Margetis S, Markert C, Masui H, Matis HS, McDonald D, McShane TS, Mioduszewski S, Mitrovski MK, Mohammed Y, Mohanty B, Morozov B, Munhoz MG, Mustafa MK, Naglis M, Nandi BK, Nasim M, Nayak TK, Nogach LV, Odyniec G, Ogawa A, Oh K, Ohlson A, Okorokov V, Oldag EW, Oliveira RA, Olson D, Pachr M, Page BS, Pal SK, Pan YX, Pandit Y, Panebratsev Y, Pawlak T, Pawlik B, Pei H, Perkins C, Peryt W, Pile P, Planinic M, Pluta J, Plyku D, Poljak N, Porter J, Poskanzer AM, Powell CB, Prindle D, Pruneau C, Pruthi NK, Przybycien M, Pujahari PR, Putschke J, Qiu H, Raniwala R, Raniwala S, Ray RL, Redwine R, Reed R, Riley CK, Ritter HG, Roberts JB, Rogachevskiy OV, Romero JL, Ruan L, Rusnak J, Sahoo NR, Sakrejda I, Salur S, Sandweiss J, Sangaline E, Sarkar A, Schambach J, Scharenberg RP, Schmah AM, Schmitz N, Schuster TR, Seele J, Seger J, Seyboth P, Shah N, Shahaliev E, Shao M, Sharma B, Sharma M, Shi SS, Shou QY, Sichtermann EP, Singaraju RN, Skoby MJ, Smirnov N, Solanki D, Sorensen P, deSouza UG, Spinka HM, Srivastava B, Stanislaus TD, Steadman SG, Stevens JR, Stock R, Strikhanov M, Stringfellow B, Suaide AA, Suarez MC, Sumbera M, Sun XM, Sun Y, Sun Z, Surrow B, Svirida DN, Symons TJ, Szanto de Toledo A, Takahashi J, Tang AH, Tang Z, Tarini LH, Tarnowsky T, Thein D, Thomas JH, Tian J, Timmins AR, Tlusty D, Tokarev M, Trainor TA, Trentalange S, Tribble RE, Tribedy P, Trzeciak BA, Tsai OD, Turnau J, Ullrich T, Underwood DG, Van Buren G, van Nieuwenhuizen G, Vanfossen JA Jr, Varma R, Vasconcelos GM, Videbæk F, Viyogi YP, Vokal S, Voloshin SA, Vossen A, Wada M, Wang F, Wang G, Wang H, Wang JS, Wang Q, Wang XL, Wang Y, Webb G, Webb JC, Westfall GD, Whitten C Jr, Wieman H, Wissink SW, Witt R, Witzke W, Wu YF, Xiao Z, Xie W, Xin K, Xu H, Xu N, Xu QH, Xu W, Xu Y, Xu Z, Xue L, Yang Y, Yang Y, Yepes P, Yi Y, Yip K, Yoo IK, Zawisza M, Zbroszczyk H, Zhang JB, Zhang S, Zhang WM, Zhang XP, Zhang Y, Zhang ZP, Zhao F, Zhao J, Zhong C, Zhu X, Zhu YH, and Zoulkarneeva Y
Abstract: STAR's measurements of directed flow (v1) around midrapidity for π±, K±, KS0, p, and p[over ¯] in Au+Au collisions at √[sNN]=200 GeV are presented. A negative v1(y) slope is observed for most of produced particles (π±, K±, KS0, and p[over ¯]). In 5%-30% central collisions, a sizable difference is present between the v1(y) slope of protons and antiprotons, with the former being consistent with zero within errors. The v1 excitation function is presented. Comparisons to model calculations (RQMD, UrQMD, AMPT, QGSM with parton recombination, and a hydrodynamics model with a tilted source) are made. For those models which have calculations of v1 for both pions and protons, none of them can describe v1(y) for pions and protons simultaneously. The hydrodynamics model with a tilted source as currently implemented cannot explain the centrality dependence of the difference between the v1(y) slopes of protons and antiprotons.
Published: 2012
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39. Strangeness enhancement in Cu-Cu and Au-Au collisions at √S(NN)=200 GeV.

Author: Agakishiev G, Aggarwal MM, Ahammed Z, Alakhverdyants AV, Alekseev I, Alford J, Anderson BD, Anson CD, Arkhipkin D, Averichev GS, Balewski J, Barnby LS, Beavis DR, Behera NK, Bellwied R, Betancourt MJ, Betts RR, Bhasin A, Bhati AK, Bichsel H, Bielcik J, Bielcikova J, Bland LC, Bordyuzhin IG, Borowski W, Bouchet J, Braidot E, Brandin AV, Bridgeman A, Brovko SG, Bruna E, Bueltmann S, Bunzarov I, Burton TP, Cai XZ, Caines H, Sánchez MC, Cebra D, Cendejas R, Cervantes MC, Chaloupka P, Chattopadhyay S, Chen HF, Chen JH, Chen JY, Chen L, Cheng J, Cherney M, Chikanian A, Choi KE, Christie W, Chung P, Codrington MJ, Corliss R, Cramer JG, Crawford HJ, Cui X, Leyva AD, De Silva LC, Debbe RR, Dedovich TG, Deng J, Derevschikov AA, de Souza RD, Didenko L, Djawotho P, Dogra SM, Dong X, Drachenberg JL, Draper JE, Du CM, Dunlop JC, Efimov LG, Elnimr M, Engelage J, Eppley G, Estienne M, Eun L, Evdokimov O, Fatemi R, Fedorisin J, Fersch RG, Filip P, Finch E, Fine V, Fisyak Y, Gagliardi CA, Gangadharan DR, Geurts F, Ghosh P, Gorbunov YN, Gordon A, Grebenyuk OG, Grosnick D, Gupta A, Gupta S, Guryn W, Haag B, Hajkova O, Hamed A, Han LX, Harris JW, Hays-Wehle JP, Heinz M, Heppelmann S, Hirsch A, Hjort E, Hoffmann GW, Hofman DJ, Huang B, Huang HZ, Humanic TJ, Huo L, Igo G, Jacobs P, Jacobs WW, Jena C, Jin F, Jones PG, Joseph J, Judd EG, Kabana S, Kang K, Kapitan J, Kauder K, Ke HW, Keane D, Kechechyan A, Kettler D, Kikola DP, Kiryluk J, Kisiel A, Kizka V, Klein SR, Knospe AG, Koetke DD, Kollegger T, Konzer J, Koralt I, Koroleva L, Korsch W, Kotchenda L, Kouchpil V, Kravtsov P, Krueger K, Krus M, Kumar L, Lamont MA, Landgraf JM, LaPointe S, Lauret J, Lebedev A, Lednicky R, Lee JH, Leight W, LeVine MJ, Li C, Li L, Li N, Li W, Li X, Li X, Li Y, Li ZM, Lima LM, Lisa MA, Liu F, Liu H, Liu J, Ljubicic T, Llope WJ, Longacre RS, Lu Y, Lukashov EV, Luo X, Ma GL, Ma YG, Mahapatra DP, Majka R, Mall OI, Manweiler R, Margetis S, Markert C, Masui H, Matis HS, McDonald D, McShane TS, Meschanin A, Milner R, Minaev NG, Mioduszewski S, Mitrovski MK, Mohammed Y, Mohanty B, Mondal MM, Morozov B, Morozov DA, Munhoz MG, Mustafa MK, Naglis M, Nandi BK, Nayak TK, Nelson JM, Nogach LV, Nurushev SB, Odyniec G, Ogawa A, Oh K, Ohlson A, Okorokov V, Oldag EW, Oliveira RA, Olson D, Pachr M, Page BS, Pal SK, Pandit Y, Panebratsev Y, Pawlak T, Pei H, Peitzmann T, Perkins C, Peryt W, Pile P, Planinic M, Ploskon MA, Pluta J, Plyku D, Poljak N, Porter J, Poskanzer AM, Potukuchi BV, Powell CB, Prindle D, Pruneau C, Pruthi NK, Pujahari PR, Putschke J, Qiu H, Raniwala R, Raniwala S, Ray RL, Redwine R, Reed R, Ritter HG, Roberts JB, Rogachevskiy OV, Romero JL, Ruan L, Rusnak J, Sahoo NR, Sakrejda I, Salur S, Sandweiss J, Sangaline E, Sarkar A, Schambach J, Scharenberg RP, Schaub J, Schmah AM, Schmitz N, Schuster TR, Seele J, Seger J, Selyuzhenkov I, Seyboth P, Shah N, Shahaliev E, Shao M, Sharma M, Shi SS, Shou QY, Sichtermann EP, Simon F, Singaraju RN, Skoby MJ, Smirnov N, Solanki D, Sorensen P, deSouza UG, Spinka HM, Srivastava B, Stanislaus TD, Steadman SG, Stevens JR, Stock R, Strikhanov M, Stringfellow B, Suaide AA, Suarez MC, Subba NL, Sumbera M, Sun XM, Sun Y, Sun Z, Surrow B, Svirida DN, Symons TJ, de Toledo AS, Takahashi J, Tang AH, Tang Z, Tarini LH, Tarnowsky T, Thein D, Thomas JH, Tian J, Timmins AR, Tlusty D, Tokarev M, Trainor TA, Trentalange S, Tribble RE, Tribedy P, Trzeciak BA, Tsai OD, Ullrich T, Underwood DG, Van Buren G, van Nieuwenhuizen G, Vanfossen JA Jr, Varma R, Vasconcelos GM, Vasiliev AN, Videbæk F, Viyogi YP, Vokal S, Voloshin SA, Wada M, Walker M, Wang F, Wang G, Wang H, Wang JS, Wang Q, Wang XL, Wang Y, Webb G, Webb JC, Westfall GD, Whitten C Jr, Wieman H, Wissink SW, Witt R, Witzke W, Wu YF, Xiao Z, Xie W, Xu H, Xu N, Xu QH, Xu W, Xu Y, Xu Z, Xue L, Yang Y, Yang Y, Yepes P, Yip K, Yoo IK, Zawisza M, Zbroszczyk H, Zhan W, Zhang JB, Zhang S, Zhang WM, Zhang XP, Zhang Y, Zhang ZP, Zhao F, Zhao J, Zhong C, Zhu X, Zhu YH, and Zoulkarneeva Y
Abstract: We report new STAR measurements of midrapidity yields for the Λ, Λ[over ¯], K(S)(0), Ξ(-), Ξ[over ¯](+), Ω(-), Ω[over ¯](+) particles in Cu+Cu collisions at √S(NN)==200 GeV, and midrapidity yields for the Λ, Λ[over ¯], K(S)(0) particles in Au+Au at √S(NN)==200 GeV. We show that, at a given number of participating nucleons, the production of strange hadrons is higher in Cu+Cu collisions than in Au+Au collisions at the same center-of-mass energy. We find that aspects of the enhancement factors for all particles can be described by a parametrization based on the fraction of participants that undergo multiple collisions.
Published: 2012
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40. Identified hadron compositions in p+p and Au+Au collisions at high transverse momenta at √S(NN)=200 GeV.

Author: Agakishiev G, Aggarwal MM, Ahammed Z, Alakhverdyants AV, Alekseev I, Alford J, Anderson BD, Anson CD, Arkhipkin D, Averichev GS, Balewski J, Barnby LS, Beavis DR, Bellwied R, Betancourt MJ, Betts RR, Bhasin A, Bhati AK, Bichsel H, Bielcik J, Bielcikova J, Bland LC, Bordyuzhin IG, Borowski W, Bouchet J, Braidot E, Brandin AV, Brovko SG, Bruna E, Bueltmann S, Bunzarov I, Burton TP, Cai XZ, Caines H, Sánchez MC, Cebra D, Cendejas R, Cervantes MC, Chaloupka P, Chattopadhyay S, Chen HF, Chen JH, Chen JY, Chen L, Cheng J, Cherney M, Chikanian A, Christie W, Chung P, Codrington MJ, Corliss R, Cramer JG, Crawford HJ, Cui X, Leyva AD, De Silva LC, Debbe RR, Dedovich TG, Deng J, Derevschikov AA, de Souza RD, Didenko L, Djawotho P, Dong X, Drachenberg JL, Draper JE, Du CM, Dunlop JC, Efimov LG, Elnimr M, Engelage J, Eppley G, Estienne M, Eun L, Evdokimov O, Fachini P, Fatemi R, Fedorisin J, Fersch RG, Filip P, Finch E, Fine V, Fisyak Y, Gagliardi CA, Gangadharan DR, Geurts F, Ghosh P, Gorbunov YN, Gordon A, Grebenyuk OG, Grosnick D, Gupta A, Gupta S, Guryn W, Haag B, Hajkova O, Hamed A, Han LX, Harris JW, Hays-Wehle JP, Heppelmann S, Hirsch A, Hoffmann GW, Hofman DJ, Huang B, Huang HZ, Humanic TJ, Huo L, Igo G, Jacobs WW, Jena C, Joseph J, Judd EG, Kabana S, Kang K, Kapitan J, Kauder K, Ke HW, Keane D, Kechechyan A, Kettler D, Kikola DP, Kiryluk J, Kisiel A, Kizka V, Klein SR, Koetke DD, Kollegger T, Konzer J, Koralt I, Koroleva L, Korsch W, Kotchenda L, Kravtsov P, Krueger K, Kumar L, Lamont MA, Landgraf JM, LaPointe S, Lauret J, Lebedev A, Lednicky R, Lee JH, Leight W, LeVine MJ, Li C, Li L, Li W, Li X, Li X, Li Y, Li ZM, Lima LM, Lisa MA, Liu F, Ljubicic T, Llope WJ, Longacre RS, Lu Y, Lukashov EV, Luo X, Ma GL, Ma YG, Mahapatra DP, Majka R, Mall OI, Margetis S, Markert C, Masui H, Matis HS, McDonald D, McShane TS, Meschanin A, Milner R, Minaev NG, Mioduszewski S, Mitrovski MK, Mohammed Y, Mohanty B, Mondal MM, Morozov B, Morozov DA, Munhoz MG, Mustafa MK, Naglis M, Nandi BK, Nasim M, Nayak TK, Nogach LV, Nurushev SB, Odyniec G, Ogawa A, Oh K, Ohlson A, Okorokov V, Oldag EW, Oliveira RA, Olson D, Pachr M, Page BS, Pal SK, Pandit Y, Panebratsev Y, Pawlak T, Pei H, Peitzmann T, Perkins C, Peryt W, Pile P, Planinic M, Pluta J, Plyku D, Poljak N, Porter J, Poskanzer AM, Powell CB, Prindle D, Pruneau C, Pruthi NK, Pujahari PR, Putschke J, Qiu H, Raniwala R, Raniwala S, Ray RL, Redwine R, Reed R, Ritter HG, Roberts JB, Rogachevskiy OV, Romero JL, Ruan L, Rusnak J, Sahoo NR, Sakrejda I, Salur S, Sandweiss J, Sangaline E, Sarkar A, Schambach J, Scharenberg RP, Schmah AM, Schmitz N, Schuster TR, Seele J, Seger J, Selyuzhenkov I, Seyboth P, Shah N, Shahaliev E, Shao M, Sharma M, Shi SS, Shou QY, Sichtermann EP, Simon F, Singaraju RN, Skoby MJ, Smirnov N, Solanki D, Sorensen P, deSouza UG, Spinka HM, Srivastava B, Stanislaus TD, Steadman SG, Stevens JR, Stock R, Strikhanov M, Stringfellow B, Suaide AA, Suarez MC, Sumbera M, Sun XM, Sun Y, Sun Z, Surrow B, Svirida DN, Symons TJ, de Toledo AS, Takahashi J, Tang AH, Tang Z, Tarini LH, Tarnowsky T, Thein D, Thomas JH, Tian J, Timmins AR, Tlusty D, Tokarev M, Trainor TA, Trentalange S, Tribble RE, Tribedy P, Trzeciak BA, Tsai OD, Ullrich T, Underwood DG, Van Buren G, van Nieuwenhuizen G, Vanfossen JA Jr, Varma R, Vasconcelos GM, Vasiliev AN, Videbæk F, Viyogi YP, Vokal S, Voloshin SA, Wada M, Walker M, Wang F, Wang G, Wang H, Wang JS, Wang Q, Wang XL, Wang Y, Webb G, Webb JC, Westfall GD, Whitten C Jr, Wieman H, Wissink SW, Witt R, Witzke W, Wu YF, Xiao Z, Xie W, Xu H, Xu N, Xu QH, Xu W, Xu Y, Xu Z, Xue L, Yang Y, Yang Y, Yepes P, Yip K, Yoo IK, Zawisza M, Zbroszczyk H, Zhan W, Zhang JB, Zhang S, Zhang WM, Zhang XP, Zhang Y, Zhang ZP, Zhao F, Zhao J, Zhong C, Zhu X, Zhu YH, and Zoulkarneeva Y
Abstract: We report transverse momentum (p(T)≤15 GeV/c) spectra of π(±), K(±), p, p[over ¯], K(S)(0), and ρ(0) at midrapidity in p+p and Au+Au collisions at √S(NN)=200 GeV. Perturbative QCD calculations are consistent with π(±) spectra in p+p collisions but do not reproduce K and p(p[over ¯]) spectra. The observed decreasing antiparticle-to-particle ratios with increasing p(T) provide experimental evidence for varying quark and gluon jet contributions to high-p(T) hadron yields. The relative hadron abundances in Au+Au at p(T)≳8 GeV/c are measured to be similar to the p+p results, despite the expected Casimir effect for parton energy loss.
Published: 2012
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41. How vegetative is the vegetative state? Preserved semantic processing in VS patients--evidence from N 400 event-related potentials.

Author: Schoenle PW and Witzke W
Subjects: Adult, Blinking, Female, Humans, Male, Middle Aged, Semantics, Brain Injuries rehabilitation, Cognition physiology, Evoked Potentials physiology, Language, Persistent Vegetative State
Abstract: Event-related potentials (ERPs) can provide valuable information about cognitive capabilities in severely brain-damaged patients. This study examined 120 patients with severe brain damage using event related potentials ERPs (N 400) to gain information about their remaining semantic processing capabilities and to contribute to differential diagnosis. Patients were classified into three diagnostic groups: patients in vegetative state (VS), patients in near vegetative state (NEVS) and patients not in vegetative state (NOVS). N400 ERPs were analyzed on an individual basis. All three groups could be differentiated by N400. While VS-patients as a group were least likely to show N400, some VS-patients (approx. 12%) showed clear semantic N400 potentials as an indication of semantic processing capabilities. Patients in NEVS showed significantly more intact semantic capabilities (76.74%) than the VS-group despite little clinical differences between the two groups. Thus, ERPs provide valuable information about patients with brain injury whose clinical conditions often do not allow a true assessment of their cognitive capabilities. Given these findings, we would espouse that both ethical and legal debate should take into account results of ERP studies of such patients.
Published: 2004

42. Error detection in patients with lesions to the medial prefrontal cortex: an ERP study.

Author: Stemmer B, Segalowitz SJ, Witzke W, and Schönle PW
Subjects: Aged, Aged, 80 and over, Discrimination, Psychological physiology, Electroencephalography, Female, Gyrus Cinguli physiology, Humans, Intracranial Aneurysm pathology, Intracranial Aneurysm physiopathology, Intracranial Aneurysm surgery, Magnetic Resonance Imaging, Male, Middle Aged, Neuropsychological Tests, Neurosurgical Procedures, Prefrontal Cortex pathology, Prefrontal Cortex surgery, Reaction Time physiology, Evoked Potentials physiology, Prefrontal Cortex physiopathology, Psychomotor Performance physiology
Abstract: When people detect their own errors in a discrimination task, a negative-going waveform can be observed in scalp-recorded EEG that has been coined the error-related negativity (Ne/ERN). Generation of the Ne/ERN has been associated with structures in the prefrontal cortex, especially the anterior cingulate region, but also the supplementary motor cortex and subcortical structures. There is some controversy as to whether the Ne/ERN is a necessary concomitant to error detection. We examined the Ne/ERN in five patients with damage to the medial prefrontal cortex, including the anterior cingulate region. Our findings support the implication of the rostral anterior cingulate in Ne/ERN production, but they also show that subjects can be aware of errors and yet not produce an Ne/ERN. Thus, error detection leads to the Ne/ERN process and damage to the anterior cingulate region may interrupt this relay, suggesting that error detection may be supported by circuits outside the anterior cingulate region.
Published: 2004
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43. Inclusion of 3-D computed tomography rendering and immersive VR in a third year medical student surgery curriculum.

Author: Mastrangelo MJ Jr, Adrales G, McKinlay R, George I, Witzke W, Plymale M, Witzke D, Donnelly M, Stich J, Nichols M, and Park AE
Subjects: Humans, Computer Simulation statistics & numerical data, Curriculum, Education, Medical methods, Imaging, Three-Dimensional, Models, Anatomic, Tomography, X-Ray Computed methods, User-Computer Interface
Abstract: Computed tomography (CT) scans are frequently used for preoperative evaluation of patients undergoing complex surgery and are therefore commonly encountered by medical students on their surgical rotations. Interpretation of these CT scan images is therefore an integral component of all medical students' surgical rotations. Additionally, advanced rendering available from modem scanners and registration of multimodal or serial scans require the student to understand how volumetric anatomy relates to cross-sectional anatomy. The utility of three-dimensional (3-D) models for conveying surgical anatomy has been demonstrated. Immersive 3-D VR overcomes many of the conceptual limitations encountered when conveying or teaching 3-D relationships via 2-D images traditionally produced by these scans. We are currently using augmented reality as a teaching tool and have incorporated 3-D immersive environments in the third year medical student Surgery rotation. Initial results suggest that this is an effective tool for teaching third year medical students. 3-D CT rendering and immersive VR provide an effective process for utilizing CT datasets to teach surgical anatomy to medical students.
Published: 2003

44. Using semi-automated image processing and desktop systems to incorporate actual patient volumetric data in immersive surgical planning and viewing systems for multiple patients.

Author: George I, Mastrangelo M Jr, Hoskins J, Witzke W, Stich J, Garrison J, Witzke DB, Nichols M, and Park A
Subjects: Computer Simulation, Data Interpretation, Statistical, Humans, Image Processing, Computer-Assisted instrumentation, Imaging, Three-Dimensional, Laparoscopy, Microcomputers, Nephrectomy, Surgery, Computer-Assisted instrumentation, Tomography, Spiral Computed, User-Computer Interface
Abstract: This paper describes how patient specific volumetric data are managed from image acquisition through final processing for the purposes of creating a 3D VR rendering of user selected and manipulated 3D models. The system described here allows for the development of quick, inexpensive, and clinician manipulated patient-specific models. The utility of this process is demonstrated by being able to move VRML models to desktop or immersive environments for both pre-operative planning and patient-specific surgical and anatomical training.
Published: 2002

45. Advancements in immersive VR as a tool for preoperative planning for laparoscopic surgery.

Author: Mastrangelo MJ Jr, Stich J, Hoskins JD, Witzke W, George I, Garrison J, Nichols M, and Park AE
Subjects: Humans, Kidney diagnostic imaging, Kidney surgery, Software Design, Computer Simulation, Image Processing, Computer-Assisted, Imaging, Three-Dimensional, Laparoscopy, Models, Anatomic, Surgery, Computer-Assisted, Tomography, Spiral Computed, User-Computer Interface
Abstract: The utility of three-dimensional (3D) models for planning laparoscopic surgery and surgical training has been demonstrated. (1) Computed tomography (CT) scans with oral and intravenous contrast medium are frequently used for preoperative evaluation of patients undergoing complex laparoscopic surgery. Immersive 3D VR overcomes many of the conceptual limitations encountered when conveying or teaching 3D relationships via 2D images traditionally produced by these scans. Over the past year we have made advancements in several areas. First, we have improved the quality of our datasets by utilizing higher resolution multi-detector scans and altering the protocols used. Second, we now register multiple isosurface views with standard axial views and volume textured views to provide additional information and perspective. Third, we now routinely use auto-segmentation techniques to visualize individual structures.
Published: 2002

46. Wireless live streaming video of laparoscopic surgery: a bandwidth analysis for handheld computers.

Author: Gandsas A, McIntire K, George IM, Witzke W, Hoskins JD, and Park A
Subjects: Electric Wiring, General Surgery education, Hernia, Ventral surgery, Humans, Internship and Residency, Computers, Handheld, Laparoscopy, Video Recording instrumentation
Abstract: Over the last six years, streaming media has emerged as a powerful tool for delivering multimedia content over networks. Concurrently, wireless technology has evolved, freeing users from desktop boundaries and wired infrastructures. At the University of Kentucky Medical Center, we have integrated these technologies to develop a system that can wirelessly transmit live surgery from the operating room to a handheld computer. This study establishes the feasibility of using our system to view surgeries and describes the effect of bandwidth on image quality. A live laparoscopic ventral hernia repair was transmitted to a single handheld computer using five encoding speeds at a constant frame rate, and the quality of the resulting streaming images was evaluated. No video images were rendered when video data were encoded at 28.8 kilobytes per second (Kbps), the slowest encoding bitrate studied. The highest quality images were rendered at encoding speeds greater than or equal to 150 Kbps. Of note, a 15 second transmission delay was experienced using all four encoding schemes that rendered video images. We believe that the wireless transmission of streaming video to handheld computers has tremendous potential to enhance surgical education. For medical students and residents, the ability to view live surgeries, lectures, courses and seminars on handheld computers means a larger number of learning opportunities. In addition, we envision that wireless enabled devices may be used to telemonitor surgical procedures. However, bandwidth availability and streaming delay are major issues that must be addressed before wireless telementoring becomes a reality.
Published: 2002

47. The development and implementation of a computerized database for clinical research in minimal access surgery. An international pilot study.

Author: Birch DW, Park A, Bailey M, Witzke W, Witzke D, and Hoskins J
Subjects: Attitude of Health Personnel, Database Management Systems organization & administration, Databases as Topic statistics & numerical data, Humans, Pilot Projects, Databases as Topic organization & administration, General Surgery statistics & numerical data, Minimally Invasive Surgical Procedures statistics & numerical data, Research statistics & numerical data
Abstract: Background: The measurement of outcomes after minimal access surgery (MAS) relies on the maintenance of an accurate, prospective clinical database. The development of a system for data management often proves to be challenging, expensive, and extremely time-consuming., Methods: We developed a computerized relational database for MAS using Microsoft Access 97 to reside on a hospital server, taking advantage of existing network connections, security, and backup systems. The design of the database includes a point-and-click approach with dropdown boxes for diagnoses, procedures, and complications (limited free-text entry). A fundamental feature of this database allows surgeons and surgical trainees to record clinical information at the point and time of data acquisition., Results: A "beta version" or fully functional draft of the database was presented to a group of surgeons from a variety of specialties (n = 8), and a structured interview based on a questionnaire was used to elicit the surgeon's evaluations of the database. Using the information from the interviews, the database was extensively revised and restructured., Conclusions: We have developed a relational database that reflects the needs of surgeons interested in clinical research. This database may serve as a template for other centers. It can be expanded to adopt new procedures or modified for other surgical specialties.
Published: 2001
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48. Losing the error related negativity in the EEG of human subjects: an indicator for willed action.

Author: Stemmer B, Witzke W, and Schönle PW
Subjects: Humans, Neuropsychological Tests, Reaction Time physiology, Cerebral Cortex physiology, Electroencephalography, Movement physiology, Psychomotor Performance physiology, Volition physiology
Abstract: When people make errors in a discrimination task, a negative-going waveform can be observed in scalp-recorded EEG that has been coined the error-related negativity (ERN). We hypothesized that the ERN only occurs with slips, that is unwilled action errors, but not if an error is committed willingly and intentionally. We investigated the occurrence of the ERN in a choice reaction time task that has been shown to produce an ERN and in an error simulation task where subjects had to fake errors while the EEG was recorded. We observed a loss of the ERN when errors were committed in willed actions but not in unwilled actions thus supporting the idea that the production of the ERN is tied to slips in unwilled actions but not mistakes in willed actions.
Published: 2001
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49. Contingent negative variation and attention in schizophrenic and depressed patients.

Author: Heimberg DR, Naber G, Hemmeter U, Zechner S, Witzke W, Gerhard U, Dittmann V, Holsboer-Trachsler E, and Hobi V
Subjects: Adult, Aging physiology, Electroencephalography, Electrophysiology, Female, Humans, Male, Middle Aged, Psychiatric Status Rating Scales, Psychometrics, Attention physiology, Contingent Negative Variation physiology, Depressive Disorder physiopathology, Depressive Disorder psychology, Schizophrenia physiopathology, Schizophrenic Psychology
Abstract: Contingent negative variation (CNV) is supposed to be a psychophysiological indicator of attention and arousal. Both have been reported to be deteriorated in schizophrenic and depressed patients. Thirty-four patients with major depression, 43 patients with schizophrenia and 49 healthy subjects were investigated during acute illness with a complex three-stimulus go/no-go task which requires different states of attention: trials consisted of three complex figures that were tachistoscopically presented. Three identical figures had to be confirmed by pressing a button (target condition). CNV was measured: (1) after the first figure waiting for the second (baseline condition), (2) after two identical figures waiting for the third (response-relevant condition), (3) after two different figures waiting for the third (response-irrelevant condition). The response-relevant condition compared to baseline significantly intensified CNV in healthy controls and to a minor extent in depressed patients but not in schizophrenics. In the response-relevant conditions in healthy controls, CNV was significantly reduced compared to the response-relevant condition. This clear discrimination between response-relevant and response-irrelevant conditions was not observed in either group of patients. Thus, the applied CNV paradigm was able to discriminate schizophrenic and depressed patients from healthy controls. Furthermore, subtle differences between schizophrenic and depressed patients were detected, reflected by the different CNV development across experimental conditions.
Published: 1999
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50. Psychotropic drug use in a representative community sample: the Upper Bavarian study.

Author: Fichter MM, Witzke W, Leibl K, and Hippius H
Subjects: Adolescent, Adult, Age Factors, Aged, Antidepressive Agents administration & dosage, Benzodiazepines administration & dosage, Cross-Sectional Studies, Female, Germany, West, Humans, Male, Mental Disorders drug therapy, Middle Aged, Psychiatric Status Rating Scales, Sex Factors, Mental Disorders epidemiology, Psychotropic Drugs administration & dosage
Abstract: A sample of 1979 community residents aged 15 years and above was assessed in a major survey of health status and consumption of psychotropic medication. Interviews were conducted in the subjects' home by a psychiatrically trained physician, who actually inspected the subjects' medical supplies. Of all subjects 6.9% (4.3% of the males and 9.0% of the females) had used a drug containing a benzodiazepine at least once in the 4 weeks preceding the interview. In the same period 3.6% had taken a medication containing a barbiturate, 2.2% a medicine containing an opioid (mainly codeine), 1.8% had taken a neuroleptic drug, 1.5% an antidepressant, 0.8% a carbamine-acid derivative and 0.1% lithium. High use of psychotropic medication was associated with higher age, female sex, higher psychiatric morbidity, higher somatic morbidity, reduced work capacity and higher neuroticism but not with social class and not with the personality factor extra- or introversion.
Published: 1989
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