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78 results on '"Bernd Surrow"'

1. Invariant jet mass measurements in pp collisions at s=200 GeV at RHIC

Author: A. Pandav, Z. Ye, Maowu Nie, Xiaoyu Liu, Muhammad Usman Ashraf, Li Yi, X. Huang, A. Kechechyan, G. Agakishiev, J. H. Thomas, D. Cebra, T. Nonaka, M. M. Mondal, E. G. Judd, Zhanwen Zhu, P. Kravtsov, W. Guryn, R. Lacey, W. J. Llope, C. Zhou, F-H. Chang, R. Kunnawalkam Elayavalli, Yunlan Ji, Sergey Voloshin, Xinyue Ju, L. V. Nogach, N. Xu, P. Filip, R. Nishitani, A. Ewigleben, L. S. Pinsky, Alexander Jentsch, A. Attri, R. Seto, Y. Huang, G. D. Westfall, A. Gupta, P. Seyboth, J. Fedorisin, M. Tokarev, K. Yip, J. S. Wang, P. Bhagat, C. Racz, J. B. Singh, S. Kumar, F. G. Atetalla, O. D. Tsai, Vitaly Okorokov, K. Jiang, Y. Wang, C. Fu, A. Dhamija, J. K. Adkins, R. Fatemi, G. S. Averichev, Guannan Xie, Xuan Zhang, I. G. Alekseev, M. A. Lisa, T. G. Dedovich, P. C. Weidenkaff, D. Kincses, H. Z. Huang, V. Verkest, S. Vokal, Wei Xie, X. Chu, W. He, J. D. Nam, F. Videbæk, M. J. Skoby, Frank Jm Geurts, Audrey Francisco, T. Galatyuk, K. Gopal, R. S. Longacre, A. Aparin, Hanna Paulina Zbroszczyk, Daniel Nemes, J. D. Brandenburg, A. Gibson, P. Szymanski, T. D. S. Stanislaus, B. K. Chan, Michal Sumbera, Sukalyan Chattopadhyay, A. A. P. Suaide, Catherine Tomkiel, J. Rusnak, I. Upsal, Jan Vanek, J. Porter, L. Didenko, H. H. Wieman, Leszek Adamczyk, L. Di Carlo, Bernd Surrow, David Stewart, Chitrasen Jena, M. L. Kabir, S. W. Wissink, D. Neff, Y. Zhang, E. C. Aschenauer, Diana Pawlowska, A. G. Knospe, L. Ruan, J. H. Chen, C. J. Feng, Rajarshi Ray, Ivan Kisel, J. M. Butterworth, W. Zha, N. Schmitz, Sevil Salur, A. K. Pandey, B. Pawlik, Y. Li, J. C. Webb, E. Shahaliev, C. Yang, D. Shen, S. Margetis, M. Csanad, Z. J. Zhang, R. Reed, K. N. Barish, Y. Yang, T. Todoroki, J. R. Adams, Y. F. Xu, Xiangming Sun, B. Xi, P. Federic, A. Mukherjee, Susumu Sato, N. Elsey, P. V. Shanmuganathan, G. Ponimatkin, Hua Pei, N. Magdy, Lukas Holub, Bedangadas Mohanty, S. K. Tripathy, D. A. Morozov, Nilay Shah, Hao Qiu, W. Solyst, D. Keane, J. Putschke, Xiaofeng Zhu, Ying Liang, X. Dong, T. Tarnowsky, M. I. Nagy, Y. F. Wu, D. G. Underwood, S. Zhang, A. V. Brandin, B. R. Pokhrel, W. Christie, N. K. Pruthi, E. Loyd, F. M. Fawzi, N. Raha, Z. Chang, Z. Liu, K. Kauder, A. Taranenko, W. Baker, Zebo Tang, D. Kapukchyan, A. Ogawa, W. B. Schmidke, A. S. Nunes, Zhigang Xiao, T. Huang, H. Harrison, C. A. Gagliardi, S. Lan, Vipul Bairathi, Yunpeng Liu, Y. Han, Y. Söhngen, D. Kalinkin, Irakli Chakaberia, Jiangyong Jia, S. Heppelmann, J. Cheng, B. J. Summa, J. Wu, A. A. Derevschikov, F. Seck, H. Liu, N. G. Minaev, H. Sako, Peng Liu, Y. Panebratsev, Saehanseul Oh, D. Grosnick, M. Posik, Arabinda Behera, C-Q. Li, B. Kimelman, Qi Yang, Zuojia Wang, Q. H. Xu, P. Parfenov, C. Perkins, Jana Bielcikova, Zhenyu Chen, H. M. Spinka, Isaac Mooney, J. L. Romero, Madan M. Aggarwal, Fuqiang Wang, Subhash Singha, Z. W. Sweger, Somnath Choudhury, S. Harabasz, D. Isenhower, D. N. Svirida, Benjamin Schweid, Christina Markert, T. J. Humanic, Lukas Kramarik, A. Hamed, Sooraj Krishnan Radhakrishnan, Y. He, E. Finch, Andrey Vasiliev, X. C. Chen, Z. Z. Xu, H. S. Matis, O. Eyser, G. Eppley, M. Chevalier, Nikita Smirnov, K. Nayak, P. Sorensen, J. Pluta, Joseph Kwasizur, M. Shao, G. Van Buren, Alexander Kiselev, T. Shao, X. Gou, L. K. Kosarzewski, Robert Licenik, W. W. Jacobs, Anthony Robert Timmins, M. Zyzak, N. Chankova-Bunzarova, W. Li, Skipper Kagamaster, Jongmin Lee, D. Zhang, R. Ma, S. Esumi, S. S. Shi, Roland Laszlo Pinter, H. J. Crawford, X.G. Li, Rene Bellwied, J. Lauret, R. E. Tribble, P. Chaloupka, Y. Fisyak, J. M. Nelson, Ting Lin, Yevheniia Khyzhniak, R. Lednicky, L. Kochenda, I. Aggarwal, J. G. Ball Cap, T. Ljubicic, X. H. He, Jize Zhao, S. Trentalange, Y. Lin, Y. G. Ma, Jing-Han Chen, Lin Ma, H. Caines, Janet Elizabeth Seger, Z. Tu, A. Quintero, Jaroslav Bielcik, E. P. Sichtermann, Maria Stefaniak, Y. Hu, O. V. Rogachevskiy, S. Fazio, Zongye Zhang, V. Prozorova, I. G. Bordyuzhin, M. S. Abdallah, I. M. Deppner, T. Ullrich, G. Wang, C. C. Zhang, X. Z. Cai, H. S. Xu, X. M. Sun, M. S. Daugherity, Anju Bhasin, H. W. Ke, M. D. Harasty, L. Fulek, N. Herrmann, N. Ghimire, K. Kang, T. Niida, Chong Kim, Ashik Ikbal Sheikh, Donald M. Anderson, H. G. Ritter, A. Lebedev, E. Hoffman, Rafal Sikora, F. Liu, Miroslav Simko, Mariusz Przybycien, J. W. Harris, Md. Nasim, N. S. Lukow, R. D. Majka, J. L. Drachenberg, X. G. Luo, A. H. Tang, Pengdong Wang, I. Bunzarov, M. Calderon De La Barca Sanchez, A. I. Hamad, M. Robotkova, Dukhishyam Mallick, Lokesh Kumar, Jaroslav Adam, Y. H. Leung, X. Liang, Y. Yu, R. Witt, S. Mioduszewski, Prithwish Tribedy, B. K. Srivastava, Shengli Huang, J. C. Dunlop, L. Wen, Zubayer Ahammed, Q. Y. Shou, R. Pak, Olga Evdokimov, Barbara Antonina Trzeciak, Maria Zurek, Yicheng Feng, Y. Shi, J. Engelage, G. Nigmatkulov, J. M. Landgraf, D. Chen, M. Strikhanov, G. Odyniec, J. Sandweiss, Joel Anthony Mazer, S. He, D. Tlusty, Niladribihari Sahoo, Tong Liu, M. Sergeeva, T. Truhlar, B. S. Page, Avishek Chatterjee, D. P. Kikola, B. Stringfellow, I. Vassiliev, Y. J. Sun, and S. Kabana
Subjects: Physics, Particle physics, Jet (fluid), Chatterjee, Transverse momentum, Perturbative QCD, Invariant (mathematics)
Abstract: Author(s): Abdallah, MS; Adam, J; Adamczyk, L; Adams, JR; Adkins, JK; Agakishiev, G; Aggarwal, I; Aggarwal, MM; Ahammed, Z; Alekseev, I; Anderson, DM; Aparin, A; Aschenauer, EC; Ashraf, MU; Atetalla, FG; Attri, A; Averichev, GS; Bairathi, V; Baker, W; Ball Cap, JG; Barish, K; Behera, A; Bellwied, R; Bhagat, P; Bhasin, A; Bielcik, J; Bielcikova, J; Bordyuzhin, IG; Brandenburg, JD; Brandin, AV; Bunzarov, I; Butterworth, J; Cai, XZ; Caines, H; De La Barca Sanchez, MC; Cebra, D; Chakaberia, I; Chaloupka, P; Chan, BK; Chang, FH; Chang, Z; Chankova-Bunzarova, N; Chatterjee, A; Chattopadhyay, S; Chen, D; Chen, J; Chen, JH; Chen, X; Chen, Z; Cheng, J; Chevalier, M; Choudhury, S; Christie, W; Chu, X; Crawford, HJ; Csanad, M; Daugherity, M; Dedovich, TG; Deppner, IM; Derevschikov, AA; Dhamija, A; Di Carlo, L; Didenko, L; Dong, X; Drachenberg, JL; Dunlop, JC; Elsey, N; Engelage, J; Eppley, G; Esumi, S; Evdokimov, O; Ewigleben, A; Eyser, O; Fatemi, R; Fawzi, FM; Fazio, S; Federic, P; Fedorisin, J; Feng, CJ; Feng, Y; Filip, P; Finch, E; Fisyak, Y; Francisco, A; Fu, C | Abstract: We present the first inclusive measurements of the invariant and softdrop jet mass in proton-proton collisions at s=200 GeV at STAR. The measurements are fully corrected for detector effects, and reported differentially in both the jet transverse momentum and jet radius parameter. We compare the measurements to established leading-order Monte Carlo event generators and find that STAR-tuned pythia-6 reproduces the data, while LHC tunes of pythia-8 and herwig-7 do not agree with the data, providing further constraints on parameter tuning. Finally, we observe that softdrop grooming, for which the contribution of wide-angle nonperturbative radiation is suppressed, shifts the jet mass distributions into closer agreement with the partonic jet mass as determined by both pythia-8 and a next-to-leading-logarithmic accuracy perturbative QCD calculation. These measurements complement recent LHC measurements in a different kinematic region, as well as establish a baseline for future jet mass measurements in heavy-ion collisions at RHIC.
Published: 2021

2. Longitudinal double-spin asymmetry for inclusive jet and dijet production in polarized proton collisions at s=200 GeV

Author: Muhammad Usman Ashraf, Qi Yang, Sergey Voloshin, Zuojia Wang, Xinyue Ju, Q. H. Xu, C. Racz, H. Z. Huang, V. Verkest, S. Vokal, A. Ewigleben, L. S. Pinsky, J. Porter, E. P. Sichtermann, M. Calderon De La Barca Sanchez, K. Jiang, Y. Wang, K. Yip, J. S. Wang, Audrey Francisco, A. I. Hamad, V. Prozorova, Ivan Kisel, W. Baker, M. Robotkova, N. Raha, Shangfeng Yang, J. H. Chen, C. J. Feng, Rajarshi Ray, Jiangyong Jia, Isaac Mooney, D. G. Underwood, Dukhishyam Mallick, Wei Xie, Y. Fisyak, Lin Ma, J. D. Nam, D. A. Morozov, M. S. Abdallah, A. Aparin, T. Ullrich, Joel Anthony Mazer, Zebo Tang, C. C. Zhang, S. He, Anju Bhasin, J. Cheng, L. V. Nogach, X. C. Chen, T. Shao, M. Sergeeva, Z. J. Zhang, D. Tlusty, B. R. Pokhrel, D. Kalinkin, Yunlan Ji, H. S. Xu, G. Wang, A. V. Brandin, N. Schmitz, N. Magdy, Robert Licenik, Anthony Robert Timmins, K. Kang, T. Niida, M. Tokarev, A. Lebedev, Y. F. Xu, F. G. Atetalla, J. Wu, S. Heppelmann, B. J. Summa, R. S. Longacre, J. W. Harris, Roland Laszlo Pinter, C. Perkins, N. S. Lukow, T. Truhlar, K. N. Barish, B. Xi, E. Shahaliev, C. Yang, H. J. Crawford, O. D. Tsai, Niladribihari Sahoo, Tong Liu, S. Harabasz, M. L. Kabir, Y. Söhngen, Vipul Bairathi, M. D. Harasty, D. Kincses, L. Di Carlo, J. K. Adkins, E. C. Aschenauer, R. Fatemi, N. Herrmann, Daniel Nemes, D. N. Svirida, J. B. Singh, S. Kumar, M. I. Nagy, Y. F. Wu, Olga Evdokimov, Barbara Antonina Trzeciak, P. Seyboth, I. Upsal, Irakli Chakaberia, J. Engelage, O. Eyser, P. V. Shanmuganathan, T. Tarnowsky, Zhenyu Chen, X. G. Luo, A. H. Tang, Pengdong Wang, P. Parfenov, Lukas Holub, Bedangadas Mohanty, C. Fu, A. Dhamija, P. Szymanski, T. D. S. Stanislaus, B. Pawlik, D. Shen, E. Loyd, Guannan Xie, P. C. Weidenkaff, K. Gopal, S. Margetis, X. Dong, T. G. Dedovich, G. Nigmatkulov, Xuan Zhang, F. M. Fawzi, B. S. Page, Avishek Chatterjee, D. P. Kikola, D. Kapukchyan, Y. Li, S. Zhang, Z. Chang, H. H. Wieman, Jan Vanek, Leszek Adamczyk, M. J. Skoby, Frank Jm Geurts, Z. Liu, B. Stringfellow, I. Bunzarov, W. Zha, K. Kauder, A. Taranenko, A. K. Pandey, J. M. Landgraf, J. R. Adams, T. Galatyuk, David Stewart, Xiangming Sun, Hanna Paulina Zbroszczyk, P. Sorensen, M. Chevalier, P. Federic, Hua Pei, W. Christie, S. K. Tripathy, Y. Han, Jongmin Lee, D. Chen, S. Lan, Joseph Kwasizur, A. A. Derevschikov, Alexander Kiselev, Sevil Salur, H. Sako, A. G. Knospe, M. Strikhanov, A. S. Nunes, R. Ma, A. Pandav, F. Seck, M. S. Daugherity, W. Guryn, M. Posik, M. Shao, G. Van Buren, Subhash Singha, Andrey Vasiliev, H. W. Ke, X. Gou, Arabinda Behera, L. Fulek, Maria Zurek, R. Lacey, Jana Bielcikova, J. G. Ball Cap, J. L. Romero, Lokesh Kumar, S. S. Shi, Jaroslav Adam, N. Ghimire, X.G. Li, Z. Ye, H. M. Spinka, G. Odyniec, J. Sandweiss, R. Kunnawalkam Elayavalli, Maowu Nie, Z. W. Sweger, T. Ljubicic, Somnath Choudhury, X. H. He, R. Reed, I. G. Alekseev, Y. H. Leung, Y. J. Sun, R. Nishitani, N. K. Pruthi, Chong Kim, Ashik Ikbal Sheikh, Janet Elizabeth Seger, H. Caines, X. Huang, A. Kechechyan, Yicheng Feng, Y. Shi, A. Quintero, J. H. Thomas, Lukas Kramarik, Sooraj Krishnan Radhakrishnan, Y. Yang, G. Eppley, Y. He, S. Kabana, G. Ponimatkin, I. M. Deppner, D. Keane, X. Liang, Nilay Shah, J. M. Nelson, Donald M. Anderson, H. G. Ritter, T. Nonaka, W. J. Llope, C. Zhou, J. Fedorisin, M. A. Lisa, E. Hoffman, Rafal Sikora, Y. G. Ma, Jing-Han Chen, E. Finch, P. Chaloupka, Xiaoyu Liu, J. Pluta, M. Zyzak, F. Liu, Miroslav Simko, F-H. Chang, J. C. Dunlop, L. Wen, Mariusz Przybycien, Alexander Jentsch, N. Chankova-Bunzarova, W. Li, Skipper Kagamaster, Ting Lin, Maria Stefaniak, H. Harrison, G. S. Averichev, A. Attri, Rene Bellwied, I. Vassiliev, S. Trentalange, P. Bhagat, H. Liu, Zubayer Ahammed, R. Seto, M. M. Mondal, E. G. Judd, Y. Huang, X. Chu, R. E. Tribble, Jize Zhao, Y. Lin, X. Z. Cai, Peng Liu, X. M. Sun, B. K. Chan, Michal Sumbera, A. A. P. Suaide, Catherine Tomkiel, S. W. Wissink, D. Neff, Y. Zhang, Benjamin Schweid, T. J. Humanic, A. Hamed, Y. Panebratsev, Q. Y. Shou, W. He, Saehanseul Oh, D. Grosnick, D. Isenhower, Z. Z. Xu, Nikita Smirnov, K. Nayak, R. Pak, Y. Yu, R. Witt, J. D. Brandenburg, S. Mioduszewski, Prithwish Tribedy, G. Agakishiev, B. K. Srivastava, D. Cebra, Shengli Huang, Zhanwen Zhu, A. Gibson, L. Didenko, J. M. Butterworth, J. C. Webb, Susumu Sato, Hao Qiu, W. Solyst, F. Videbæk, Sukalyan Chattopadhyay, Chitrasen Jena, Diana Pawlowska, Li Yi, P. Kravtsov, N. Xu, P. Filip, G. D. Westfall, A. Gupta, Zhigang Xiao, T. Huang, Yunpeng Liu, N. G. Minaev, B. Kimelman, J. Rusnak, L. Ruan, T. Todoroki, Jaroslav Bielcik, Y. Hu, O. V. Rogachevskiy, Vitaly Okorokov, Bernd Surrow, M. Csanad, J. Putschke, Xiaofeng Zhu, A. Mukherjee, N. Elsey, Ying Liang, A. Ogawa, W. B. Schmidke, C-Q. Li, C. A. Gagliardi, Christina Markert, H. S. Matis, L. K. Kosarzewski, W. W. Jacobs, J. Lauret, Madan M. Aggarwal, Yevheniia Khyzhniak, R. Lednicky, L. Kochenda, Z. Tu, Fuqiang Wang, S. Fazio, Zongye Zhang, I. G. Bordyuzhin, D. Zhang, S. Esumi, I. Aggarwal, Md. Nasim, R. D. Majka, and J. L. Drachenberg
Subjects: Physics, Particle physics, Proton, 010308 nuclear & particles physics, media_common.quotation_subject, Chatterjee, Jet (particle physics), 01 natural sciences, Asymmetry, Helicity, 0103 physical sciences, Production (computer science), 010306 general physics, media_common, Spin-½
Abstract: Author(s): Abdallah, MS; Adam, J; Adamczyk, L; Adams, JR; Adkins, JK; Agakishiev, G; Aggarwal, I; Aggarwal, MM; Ahammed, Z; Alekseev, I; Anderson, DM; Aparin, A; Aschenauer, EC; Ashraf, MU; Atetalla, FG; Attri, A; Averichev, GS; Bairathi, V; Baker, W; Ball Cap, JG; Barish, K; Behera, A; Bellwied, R; Bhagat, P; Bhasin, A; Bielcik, J; Bielcikova, J; Bordyuzhin, IG; Brandenburg, JD; Brandin, AV; Bunzarov, I; Butterworth, J; Cai, XZ; Caines, H; Calderon De La Barca Sanchez, M; Cebra, D; Chakaberia, I; Chaloupka, P; Chan, BK; Chang, FH; Chang, Z; Chankova-Bunzarova, N; Chatterjee, A; Chattopadhyay, S; Chen, D; Chen, J; Chen, JH; Chen, X; Chen, Z; Cheng, J; Chevalier, M; Choudhury, S; Christie, W; Chu, X; Crawford, HJ; Csanad, M; Daugherity, M; Dedovich, TG; Deppner, IM; Derevschikov, AA; Dhamija, A; Di Carlo, L; Didenko, L; Dong, X; Drachenberg, JL; Dunlop, JC; Elsey, N; Engelage, J; Eppley, G; Esumi, S; Evdokimov, O; Ewigleben, A; Eyser, O; Fatemi, R; Fawzi, FM; Fazio, S; Federic, P; Fedorisin, J; Feng, CJ; Feng, Y; Filip, P; Finch, E; Fisyak, Y; Francisco, A; Fu, C | Abstract: We report high-precision measurements of the longitudinal double-spin asymmetry, ALL, for midrapidity inclusive jet and dijet production in polarized pp collisions at a center-of-mass energy of s=200 GeV. The new inclusive jet data are sensitive to the gluon helicity distribution, Δg(x,Q2), for gluon momentum fractions in the range from x≃0.05 to x≃0.5, while the new dijet data provide further constraints on the x dependence of Δg(x,Q2). The results are in good agreement with previous measurements at s=200 GeV and with recent theoretical evaluations of prior world data. Our new results have better precision and thus strengthen the evidence that Δg(x,Q2) is positive for xg0.05.
Published: 2021

3. Centrality and transverse momentum dependence of D0 -meson production at mid-rapidity in Au + Au collisions at sNN=200 GeV

Author: M. Calderon De La Barca Sanchez, A. I. Hamad, Chong Kim, Sedigheh Jowzaee, J. L. Romero, Madan M. Aggarwal, M. A. Szelezniak, H. G. Ritter, Xiaofeng Luo, Fuqiang Wang, Benjamin Schweid, J. L. Drachenberg, D. K. Mishra, Guo-Liang Ma, Rafal Sikora, Tetsuro Sugiura, D. Arkhipkin, Nasim, A. Hamed, Olga Evdokimov, J. Rusnak, A. F. Kraishan, Lukas Kramarik, E. Finch, M. Kocan, D. Kalinkin, Li Yi, Jorn Henning Putschke, Y. J. Sun, I. Upsal, L. Ruan, A. V. Brandin, C. Dilks, J. Porter, A. Vossen, Y. Wang, Y. Fisyak, Jay Roberts, A. S. Hirsch, P. Kravtsov, D. Zhang, Fuwang Shen, A. M. Schmah, W. Christie, Ivan Kisel, Maksym Zyzak, Maria Zurek, S. Esumi, Vipul Bairathi, K. Oh, H. W. Ke, T. Todoroki, J. C. Webb, L. C. Bland, Giacomo Contin, K. Kauder, Chi Yang, D. N. Svirida, L. Zhang, Justin Ewigleben, G. Odyniec, C. Zhong, Wei Xie, Nihar Sahoo, Andrey Vasiliev, R. Seto, A. Aparin, G. Eppley, I. Vassiliev, J. C. Dunlop, L. Wen, S. L. Huang, T. J. Humanic, D. L. Olvitt, Anik Gupta, Jaroslav Bielcik, S. K. Radhakrishnan, L. Fulek, J. Pluta, R. S. Longacre, Robert Licenik, P. Szymanski, X.G. Li, E. P. Sichtermann, Anthony Robert Timmins, Adam Ryszard Kisiel, N. Chankova-Bunzarova, W. Li, Frank Jm Geurts, Zubayer Ahammed, N. Schmitz, K. N. Barish, Skipper Kagamaster, J. Engelage, Shize Yang, Janet Elizabeth Seger, Roland Laszlo Pinter, H. J. Crawford, Jaroslav Adam, L. Ma, O. V. Rogachevskiy, A. Quintero, J. Y. Zhang, T. Galatyuk, B. S. Page, Maowu Nie, E. Shahaliev, N. Xu, Rene Bellwied, G. Nigmatkulov, D. P. Kikola, X. Huang, A. Kechechyan, R. E. Tribble, B. Stringfellow, I. M. Deppner, J. K. Adkins, J. R. Adams, P. V. Shanmuganathan, F. Seck, Q. Y. Shou, J. M. Landgraf, Pradip Kumar Sahu, T. Nonaka, P. Chaloupka, W. Solyst, C. Zhou, K. Meehan, M. Posik, R. Fatemi, L. He, Todd Kinghorn, F. Videbæk, P. Filip, K. Krueger, Ting Lin, R. Pak, Z. J. Xu, Arabinda Behera, H. M. Spinka, D. Mallick, Xiangming Sun, Vitaly Okorokov, M. Strikhanov, Sukalyan Chattopadhyay, David Brown, G. Wang, J. Kvapil, A. A. Derevschikov, H. Qiu, Bernd Surrow, S. Trentalange, R. Witt, J. W. Harris, J. Sandweiss, M. Tokarev, G. D. Westfall, Zebo Tang, J. H. Thomas, N. Elsey, Nilay Shah, G. Igo, S. Mioduszewski, N. K. Pruthi, M. Cherney, I. G. Alekseev, D. Kapukchyan, Z. Chang, Lokesh Kumar, Hua Pei, M. A. Lisa, J. C. Mei, W. B. Schmidke, Jana Bielcikova, Prithwish Tribedy, B. K. Srivastava, S. K. Tripathy, Leo Clifford Greiner, M. Kelsey, F-H. Chang, Q. Yang, C. A. Gagliardi, F. Liu, K. Yip, P. Sorensen, T. D. S. Stanislaus, T. Ullrich, H. H. Wieman, C. Perkins, L. Krauth, J. D. Brandenburg, N. Herrmann, S. Siejka, Mariusz Przybycien, G. S. Averichev, Y. Yang, J. Bryslawskyj, B. Pawlik, A. Gibson, S. Zhang, J. Butterworth, Z. Ye, L. Didenko, I. Chakaberia, P. Seyboth, Y. F. Xu, J. Lidrych, Jan Vanek, Leszek Adamczyk, P. Federic, Q. H. Xu, A. H. Tang, Pengdong Wang, S. Fazio, Xuliang Chen, B. Huang, R. D. Majka, E. C. Aschenauer, I. Bunzarov, S. Margetis, O. Matonoha, X. Dong, G. Agakishiev, D. S. Gunarathne, J. Schambach, Zhigang Xiao, T. Huang, D. Cebra, Zhanwen Zhu, H. Xu, Anju Bhasin, S. Kabana, G. Xie, A. J. Bassill, Yunpeng Liu, Derek Anderson, Jongmin Lee, R. L. Ray, K. Kang, T. Niida, R. Ma, A. Lebedev, N. G. Minaev, T. Ljubicic, Niseem Magdy, H. Caines, M. Lomnitz, Siwei Luo, Joseph Kwasizur, Jiangyong Jia, M. Shao, G. Van Buren, Isaac Mooney, S. S. Shi, Muhammad Usman Ashraf, Sergey Voloshin, Xinyue Ju, K. Jiang, Jasvinder A. Singh, Yanjun Wu, M. Sergeeva, Arkadiy Taranenko, D. G. Underwood, J. Cheng, Arka Chatterjee, Peng Huo, A. Harlenderova, M. K. Mustafa, W. Guryn, R. Lacey, Y. Li, S. Singha, Alexandre Alarcon Do Passo Suaide, J. Fedorisin, M. M. Mondal, Roli Esha, Daniel Nemes, Jie Zhao, S. Horvat, M. Simko, A. Lipiec, W. Zha, Lukas Holub, Bedangadas Mohanty, C-Q. Li, Christina Markert, D. Smirnov, O. Rusnakova, H. S. Matis, Z. Moravcova, W. W. Jacobs, J. Lauret, R. Lednicky, L. Kochenda, T. Tarnowsky, M. Csanad, Xiaofeng Zhu, Ying Liang, A. Ogawa, T. G. Dedovich, I. K. Yoo, Zongye Zhang, Y. Guo, I. G. Bordyuzhin, Xiaoyu Liu, J. A. Mazer, N. Kulathunga Mudiyanselage, L. V. Nogach, Sumit R. Das, C. E. Flores, E. G. Judd, Y. Hong, Zhaoping Liu, B. K. Chan, Michal Sumbera, Catherine Tomkiel, S. W. Wissink, Y. Zhang, H. Z. Huang, S. Vokal, F. G. Atetalla, O. D. Tsai, J. H. Chen, D. A. Morozov, T. Edmonds, W. Q. Shen, B. J. Summa, H. Liu, David Stewart, Sevil Salur, Y. Panebratsev, Saehanseul Oh, D. Grosnick, S. Ramachandran, O. Eyser, Samuel Heppelmann, B. Tu, K. Nayak, A. K. Bhati, D. Keane, Nikolai Smirnov, L. G. Efimov, Yu-Gang Ma, L. K. Kosarzewski, J. M. Nelson, W. J. Llope, Alexander Jentsch, A. Attri, P. Liu, Xuan Zhang, R. Aoyama, Hanna Paulina Zbroszczyk, R. Kunnawalkam Elayavalli, and R. Reed
Subjects: Physics, Quark, Particle physics, Strange quark, Meson, 010308 nuclear & particles physics, Hadron, Kinetic energy, 01 natural sciences, Spectral line, Charm quark, 0103 physical sciences, Rapidity, 010306 general physics
Abstract: Author(s): Adam, J; Adamczyk, L; Adams, JR; Adkins, JK; Agakishiev, G; Aggarwal, MM; Ahammed, Z; Alekseev, I; Anderson, DM; Aoyama, R; Aparin, A; Arkhipkin, D; Aschenauer, EC; Ashraf, MU; Atetalla, F; Attri, A; Averichev, GS; Bairathi, V; Barish, K; Bassill, AJ; Behera, A; Bellwied, R; Bhasin, A; Bhati, AK; Bielcik, J; Bielcikova, J; Bland, LC; Bordyuzhin, IG; Brandenburg, JD; Brandin, AV; Brown, D; Bryslawskyj, J; Bunzarov, I; Butterworth, J; Caines, H; Calderon De La Barca Sanchez, M; Cebra, D; Chakaberia, I; Chaloupka, P; Chan, BK; Chang, FH; Chang, Z; Chankova-Bunzarova, N; Chatterjee, A; Chattopadhyay, S; Chen, JH; Chen, X; Cheng, J; Cherney, M; Christie, W; Contin, G; Crawford, HJ; Csanad, M; Das, S; Dedovich, TG; Deppner, IM; Derevschikov, AA; Didenko, L; Dilks, C; Dong, X; Drachenberg, JL; Dunlop, JC; Edmonds, T; Efimov, LG; Elsey, N; Engelage, J; Eppley, G; Esha, R; Esumi, S; Evdokimov, O; Ewigleben, J; Eyser, O; Fatemi, R; Fazio, S; Federic, P; Fedorisin, J; Filip, P; Finch, E; Fisyak, Y; Flores, CE; Fulek, L; Gagliardi, CA; Galatyuk, T; Geurts, F; Gibson, A | Abstract: We report a new measurement of D0-meson production at mid-rapidity (|y|l1) in Au + Au collisions at sNN=200GeV utilizing the heavy flavor tracker, a high resolution silicon detector at the STAR experiment. Invariant yields of D0 mesons with transverse momentum pT9GeV/c are reported in various centrality bins (0-10%, 10-20%, 20-40%, 40-60%, and 60-80%). Blast-wave thermal models are used to fit the D0-meson pT spectra to study D0 hadron kinetic freeze-out properties. The average radial flow velocity extracted from the fit is considerably smaller than that of light hadrons (π,K, and p), but comparable to that of hadrons containing multiple strange quarks (φ,Ξ-), indicating that D0 mesons kinetically decouple from the system earlier than light hadrons. The calculated D0 nuclear modification factors reaffirm that charm quarks suffer a large amount of energy loss in the medium, similar to those of light quarks for pTg4GeV/c in central 0-10% Au + Au collisions. At low pT, the nuclear modification factors show a characteristic structure qualitatively consistent with the expectation from model predictions that charm quarks gain sizable collective motion during the medium evolution. The improved measurements are expected to offer new constraints to model calculations and help gain further insights into the hot and dense medium created in these collisions.
Published: 2019

4. Measurement of the longitudinal spin asymmetries for weak boson production in proton-proton collisions at s=510 GeV

Author: Y. K. Sun, Bernd Surrow, I. G. Alekseev, M. A. Lisa, J. C. Mei, N. Elsey, G. Eppley, Long Ma, Peifeng Liu, J. Pluta, C. A. Gagliardi, Guannan Xie, Yanfang Liu, R. Lednicky, J. Bryslawskyj, N. Chankova-Bunzarova, Skipper Kagamaster, Subhash Singha, Justin Ewigleben, J. Fedorisin, T. Nonaka, Christina Markert, A. Gibson, G. Odyniec, Mate Csanad, Anju Bhasin, O. Rusnakova, Nasim, L. C. Bland, T. Ljubicic, H. S. Matis, Hanna Paulina Zbroszczyk, B. Pawlik, L. K. Kosarzewski, Chris Perkins, Joel Anthony Mazer, Rene Bellwied, A. J. Bassill, Liang He, Alexandre Alarcon Do Passo Suaide, Lukas Holub, Bedangadas Mohanty, Isaac Upsal, J. Lauret, H. Caines, A. Quintero, A. Aparin, Jaroslav Bielcik, J. Rusnak, Z. Chang, J. M. Butterworth, S. Stanislaus, L. Kochenda, Yaping Wang, J. C. Webb, Spiros Margetis, T. Niida, A. F. Kraishan, M. Kocan, Jie Zhang, Saskia Mioduszewski, Shusu Shi, Xiaofeng Luo, F. Seck, Guo-Liang Ma, E. Shahaliev, Dingwei Zhang, A. Lebedev, W. Solyst, John Nelson, O. V. Rogachevskiy, Vitalii Okorokov, A. H. Tang, Feng-Han Chang, Muhammad Usman Ashraf, Neha Shah, L. Ruan, Pavol Federic, Alexander Vasiliev, Li Yi, M. Posik, Tetsuro Sugiura, J. L. Drachenberg, Olga Evdokimov, M. Tokarev, Yang Yang, Matthew Kelsey, Gary Westfall, Arghya Chatterjee, Xiangming Sun, Kevin Adkins, B. Huang, C. Zhong, E. C. Aschenauer, Norbert Herrmann, Chi Yang, P. Kravtsov, G. Agakishiev, D. S. Gunarathne, Kun Jiang, J. Putschke, C. Dilks, S. W. Wissink, Wen-Qing Shen, Jaroslav Adam, Kejun Kang, S. Das, S. Horvat, Jana Bielcikova, Madan M. Aggarwal, Fuqiang Wang, S. Kabana, Z. Moravcova, Jeong-Hun Lee, O. D. Tsai, A. Ogawa, D. Cebra, Nalinda Kulathunga Mudiyanselage, Xinyue Ju, S. Trentalange, Zhen Liu, L. V. Nogach, T. Todoroki, Jay Roberts, Zhenyu Ye, D. K. Mishra, X. Dong, Maria Zurek, ShinIchi Esumi, Benjamin Schweid, Manuel Calderon De La Barca Sanchez, P. Szymanski, Zhanwen Zhu, Gang Wang, Robert E. Tribble, J. H. Thomas, Yuliang Sun, T. J. Humanic, Jiangyong Jia, D. Arkhipkin, A. Hamed, N. K. Pruthi, D. N. Svirida, S. Fazio, K. Krueger, I. G. Bordyuzhin, Joseph Kwasizur, J. Engelage, D. L. Olvitt, Miroslav Simko, Ron Longacre, Mariusz Przybycien, Paul Sorensen, G. Nigmatkulov, Cheng Li, D. Kapukchyan, I. K. Yoo, Subhasis Chattopadhyay, Yicheng Feng, A. Vossen, H. H. Wieman, Xiaolong Chen, Arabinda Behera, Xiaoyu Liu, J. W. Harris, R. Witt, Yu-Gang Ma, Roli Esha, E. P. Sichtermann, W. J. Llope, G. S. Averichev, Shuai Yang, J. M. Landgraf, I. Vassiliev, J. C. Dunlop, L. Wen, Daniel Nemes, Jie Zhao, Zhongbin Xu, Jing-Han Chen, Qiye Shou, Dmitry Morozov, J. Schambach, Alexander Jentsch, Ivan Kisel, Zubayer Ahammed, M. Strikhanov, Norbert Schmitz, F. Videbæk, M. M. Mondal, C. E. Flores, E. G. Judd, D. P. Kikola, A. Attri, Wei Li, Z. Ye, Yuanjing Li, Dmitri Smirnov, B. Stringfellow, Chensheng Zhou, A. Lipiec, Lukas Kramarik, Maowu Nie, L. Zhang, P. Huo, Sooraj Krishnan Radhakrishnan, E. Finch, Chong Kim, Niseem Magdy Abdelwahab Abdelrahman, M. Sergeeva, Kishora Nayak, W. Zha, Zhigang Xiao, Jagbir Singh, T. Huang, J. Porter, Nu Xu, Raghav Kunnawalkam Elayavalli, J. Sandweiss, A. Kechechyan, Pradip Kumar Sahu, B. K. Chan, Michal Sumbera, Yifei Zhang, P. Chaloupka, Yi-Fei Xu, Derek Anderson, Janet Elizabeth Seger, Ting Lin, I. Bunzarov, O. Matonoha, M. Lomnitz, I. M. Deppner, N. G. Minaev, Catherine Tomkiel, Hank Crawford, T. Ullrich, H. Z. Huang, Yi Wang, R. Pak, Siwei Luo, Feng Liu, A. I. Hamad, Sedigheh Jowzaee, P. Filip, Dave Underwood, Rafal Sikora, Gene Van Buren, Bill Christie, Hans Georg Ritter, Declan Keane, Xinjie Huang, Joseph Adams, Prithwish Tribedy, B. K. Srivastava, Juan M. Romero, Shengli Huang, T. G. Dedovich, Isaac Mooney, Shenghui Zhang, William Jacobs, B. Schmidke, Alena Harlenderova, H. W. Ke, L. Fulek, Yang Wu, Anik Gupta, Frank Jm Geurts, T. Galatyuk, K. Meehan, Jindrich Lidrych, Yifan Hong, Song Zhang, Zebo Tang, K. Yip, Giacomo Contin, Rongrong Ma, Nihar Sahoo, Robert Licenik, Anthony Robert Timmins, Adam Ryszard Kisiel, Roland Laszlo Pinter, R. Fatemi, Todd Kinghorn, Brian Page, Ming Shao, M. Cherney, Rosi Reed, Lokesh Kumar, A. V. Brandin, Hua Pei, S. K. Tripathy, Vipul Bairathi, Irakli Chakaberia, Y. Fisyak, K. Oh, Qian Yang, Richard Daniel Majka, D. Kalinkin, S. Heppelmann, Xin Li, B. J. Summa, S. Siejka, Z. Y. Zhang, P. Seyboth, Jan Vanek, Leszek Adamczyk, S. Ramachandran, O. Eyser, Jianping Cheng, Sergei A. Voloshin, S. Vokal, Yue Liang, Wei Xie, Hal Spinka, Hao-jie Xu, Roy A. Lacey, T. Edmonds, Pengfei Wang, P. V. Shanmuganathan, D. Mallick, G. Igo, K. Kauder, A. Taranenko, F. G. Atetalla, Alexander Schmah, Lanny Ray, H. Liu, David Stewart, Jakub Kvapil, Sevil Salur, A. K. Bhati, Nikolai Smirnov, Xiaoping Zhang, L. G. Efimov, L. Didenko, Peng Liu, Wlodek Guryn, Y. Panebratsev, Saehanseul Oh, D. Grosnick, R. Aoyama, Samuel Heppelmann, B. Tu, Qinghua Xu, Maksym Zyzak, D. D. Brown, R. Seto, James Brandenburg, K. N. Barish, T. Tarnowsky, Xianglei Zhu, and A. A. Derevschikov
Subjects: Physics, Quark, Particle physics, Proton, 010308 nuclear & particles physics, Drell–Yan process, 01 natural sciences, Helicity, Pseudorapidity, 0103 physical sciences, High Energy Physics::Experiment, Production (computer science), Nuclear Experiment, 010306 general physics, Spin-½, Boson
Abstract: We report new STAR measurements of the single-spin asymmetries $A_L$ for $W^+$ and $W^-$ bosons produced in polarized proton--proton collisions at $\sqrt{s}$ = 510 GeV as a function of the decay-positron and decay-electron pseudorapidity. The data were obtained in 2013 and correspond to an integrated luminosity of 250 pb$^{-1}$. The results are combined with previous results obtained with 86 pb$^{-1}$. A comparison with theoretical expectations based on polarized lepton-nucleon deep-inelastic scattering and prior polarized proton--proton data suggests a difference between the $\bar{u}$ and $\bar{d}$ quark helicity distributions for $0.05 < x < 0.25$. In addition, we report new results for the double-spin asymmetries $A_{LL}$ for $W^\pm$, as well as $A_L$ for $Z/\gamma^*$ production and subsequent decay into electron--positron pairs.
Published: 2019

5. Erratum: Observation of D0 Meson Nuclear Modifications in Au+Au Collisions at sNN=200 GeV [Phys. Rev. Lett. 113 , 142301 (2014)]

Author: Zebo Tang, Janusz Chwastowski, Leo Clifford Greiner, C. Perkins, F. Ding, P. Djawotho, F. Videbæk, G. Webb, Wenbin Yan, Y. Panebratsev, D. Grosnick, Rihan Haque, Zhigang Xiao, H. Z. Huang, S. Vokal, Sukalyan Chattopadhyay, N. G. Minaev, Z. Z. Xu, Madan M. Aggarwal, Fuqiang Wang, Jaroslav Bielcik, Jie Zhang, A. Vossen, Nikita Smirnov, O. D. Tsai, Y. Zawisza, M. J. Skoby, Frank Jm Geurts, K. Yip, J. S. Wang, N. Xu, P. Filip, H. W. Ke, O. V. Rogachevskiy, H. J. Jang, T. Kollegger, F. Liu, D. D. Koetke, M. C. Cervantes, J. H. Chen, Li-Zhu Chen, W. Q. Shen, Vitaly Okorokov, Bernd Surrow, P. Pile, G. D. Westfall, B. Pawlik, R. R. Debbe, D. A. Morozov, Nasim, S. Das, B. Huang, A. Gupta, D. Solanki, Mariusz Przybycien, L. Kotchenda, W. B. Schmidke, C. A. Gagliardi, M. Pachr, D. Garand, Y. Wang, Y. F. Xu, S. Dhamija, M. Lomnitz, Sevil Salur, Basanta Kumar Nandi, M. Tokarev, D. Tlusty, D. Kalinkin, S. Zhang, S. G. Brovko, R. D. Majka, S. Heppelmann, J. Rusnak, N. K. Pruthi, D. M.M.D. Madagodagettige Don, D. R. Gangadharan, A. F. Kraishan, D. N. Svirida, Niladribihari Sahoo, T. D. S. Stanislaus, L. Ruan, A. M. Poskanzer, Maxence Vandenbroucke, M. K. Mustafa, S. K. Gupta, Giacomo Contin, J. L. Drachenberg, W. Borowski, J. Schambach, Anju Bhasin, Z. H. Khan, Guo-Liang Ma, S. Ramachandran, G. Eppley, Y. Li, H. H. Wieman, Li Yi, A. Chikanian, C. Yang, I. Sakrejda, O. Eyser, J. Pluta, M. Zyzak, Stephen V. Gliske, A. K. Bhati, D. Keane, Y. F. Wu, K. Kang, Aditi Banerjee, R. Stock, W. Li, A. Lebedev, L. G. Efimov, T. J. Humanic, J. Putschke, E. Sangaline, D. Arkhipkin, Xiaofeng Zhu, D. P. Mahapatra, T. K. Nayak, Z. P. Zhang, A. Hamed, A. S. Hirsch, J. Engelage, Rene Bellwied, H. G. Ritter, G. Nigmatkulov, P. Kravtsov, A. M. Schmah, Y. H. Zhu, R. E. Tribble, Dmitry Smirnov, Z. Ye, T. P. Burton, Jize Zhao, Y. Yang, Gerald W Hoffmann, X. Huang, A. Kechechyan, J. M. Landgraf, D. J. Hofman, Xiangyuan Cui, W. Christie, Nilay Shah, Pradip Kumar Sahu, R. Cendejas, A. V. Brandin, A. Ogawa, P. Chaloupka, Andrey Vasiliev, M. Strikhanov, K. Xin, J. Takahashi, S. Trentalange, X.G. Li, H. F. Chen, P. Huck, M. A. C. Lamont, S. B. Nurushev, J. Konzer, P. Sorensen, Janet Elizabeth Seger, D. L. Olvitt, A. Kesich, G. Odyniec, J. Sandweiss, J. Turnau, M. Shao, Y. X. Pan, G. Van Buren, S. Fazio, I. G. Bordyuzhin, S. S. Shi, Mirko Planinic, Jana Bielcikova, Anthony Robert Timmins, Adam Ryszard Kisiel, Prabhat Ranjan Pujahari, J. L. Romero, J. M. Nelson, H. J. Crawford, J. K. Adkins, Y. G. Ma, W. Peryt, E. Finch, C-Q. Li, R. P. Scharenberg, Christina Markert, R. Fatemi, O. Rusnakova, H. S. Matis, W. W. Jacobs, J. Lauret, J. A. Vanfossen, R. Lednicky, Haiyan Wang, J. F. Ross, X. M. Sun, Wei Xie, T. G. Dedovich, M. Cherney, Xiangming Sun, A. Aparin, G. M.S. Vasconcelos, Y. Pandit, K. S. Engle, Lokesh Kumar, Hua Pei, N. Schmitz, E. Shahaliev, Amal Sarkar, I. Koralt, N. Yu, L. V. Nogach, J. H. Thomas, G. S. Averichev, Jian Deng, J. Porter, Ivan Kisel, G. Agakishiev, D. S. Gunarathne, E. P. Sichtermann, A. Roy, Z. Chang, D. Cebra, Rashmi Raniwala, H. M. Spinka, T. Ullrich, Radoslaw Antoni Kycia, C. M. Du, H. S. Xu, L. Eun, I. G. Alekseev, Y. Guo, Jongmin Lee, R. L. Ray, M. A. Lisa, T. Ljubicic, C. D. Anson, R. Witt, H. Caines, Sudhir Raniwala, A. Quintero, S. Mioduszewski, Bedangadas Mohanty, Zhiming Li, H. Bichsel, A. Gibson, Y. Zoulkarneeva, C. Zhong, X. L. Wang, Donald M. McDonald, E. C. Aschenauer, S. Margetis, Prithwish Tribedy, B. K. Srivastava, Alice Elisabeth Ohlson, X. Dong, S. K. Pal, Justin Stevens, J. M. Butterworth, M. Calderon De La Barca Sanchez, M. Wada, J. C. Webb, Robert Vertesi, Olga Evdokimov, Barbara Antonina Trzeciak, H. Masui, L. Didenko, I. K. Yoo, Hao Qiu, P. V. Shanmuganathan, T. Tarnowsky, L. E. Dunkelberger, M. M. Mondal, C. E. Flores, E. G. Judd, Jay Roberts, A. A. Derevschikov, Michal Sumbera, S. Bültmann, S. W. Wissink, Y. Zhang, Nikola Poljak, J. E. Draper, G. Wang, Z. J. Sun, K. Krueger, C. K. Riley, G. J. van Nieuwenhuizen, M. A. Szelezniak, L. C. Bland, J. Alford, W. Guryn, Y. Fisyak, K. Oh, J. Fedorisin, P. Seyboth, J. C. Dunlop, Leszek Adamczyk, R. Derradi de Souza, Q. H. Xu, J. W. Harris, J. Xu, I. Kulakov, M. J. M. Codrington, B. Di Ruzza, Zubayer Ahammed, S. Horvat, R. N. Singaraju, T. Pawlak, W. Zha, M. J. LeVine, D. G. Underwood, J. Cheng, T. J. M. Symons, L. C. De Silva, P. Yepes, R. S. Longacre, A. Davila Leyva, Xuan Zhang, Q. Y. Shou, X. G. Luo, A. H. Tang, G. Igo, J. Novak, B. Sharma, J. Bouchet, K. D. Landry, K. Kauder, I. Bunzarov, Hanna Paulina Zbroszczyk, D. R. Beavis, F. Zhao, W. J. Llope, R. Varma, L-X. Han, S. Y. Noh, J. L. Zhang, B. S. Page, D. P. Kikola, B. Stringfellow, J. G. Cramer, M. R. Girard, E. W. Oldag, T. S. McShane, P. Bhattarai, Y. J. Sun, C. Dilks, S. Kabana, Y. P. Viyogi, and B. Haag
Subjects: Physics, Particle physics, Meson, 010308 nuclear & particles physics, 0103 physical sciences, General Physics and Astronomy, Heavy ion, Charm (quantum number), 010306 general physics, 01 natural sciences
Published: 2018

6. Longitudinal double-spin asymmetries for dijet production at intermediate pseudorapidity in polarized pp collisions at s=200 GeV

Author: Jorn Henning Putschke, A. V. Brandin, G. Wang, Xiangming Sun, Vipul Bairathi, J. Porter, N. Herrmann, Ivan Kisel, I. Vassiliev, Anik Gupta, Frank Jm Geurts, S. Siejka, T. Galatyuk, C. Zhou, K. Meehan, S. H. Zhang, Benjamin Schweid, N. K. Pruthi, M. Calderon De La Barca Sanchez, A. I. Hamad, Sedigheh Jowzaee, Xiaofeng Luo, Giacomo Contin, Siwei Luo, D. Arkhipkin, A. Hamed, E. P. Sichtermann, Zebo Tang, Guo-Liang Ma, Li Yi, K. Yip, I. K. Yoo, C. Perkins, S. L. Huang, P. Seyboth, N. N. Ajitanand, Nihar Sahoo, G. Eppley, Jan Vanek, A. S. Hirsch, P. Kravtsov, Fuwang Shen, A. M. Schmah, Leszek Adamczyk, J. L. Drachenberg, R. S. Longacre, S. Fazio, J. Pluta, N. Chankova-Bunzarova, W. Li, Xuliang Chen, Jiangyong Jia, P. Federic, L. Ma, Rene Bellwied, P. V. Shanmuganathan, M. Tokarev, D. Mallick, Olga Evdokimov, Roli Esha, Isaac Mooney, Daniel Nemes, Jie Zhao, S. Horvat, S. Heppelmann, B. J. Summa, C. E. Flores, E. G. Judd, J. L. Romero, Lukas Kramarik, E. Finch, Anthony Robert Timmins, Adam Ryszard Kisiel, R. E. Tribble, Xuedong Bai, T. J. Humanic, Shize Yang, F. Seck, I. G. Alekseev, Arka Chatterjee, F. Videbæk, D. Tlusty, G. Igo, T. Ullrich, T. D. S. Stanislaus, Xiaofeng Zhu, Ying Liang, K. Kauder, H. J. Crawford, M. A. Lisa, J. C. Mei, Sukalyan Chattopadhyay, J. K. Adkins, H. H. Wieman, L. Krauth, M. Simko, M. Posik, Arabinda Behera, Jay Roberts, L. Zhang, Y. Panebratsev, Yu-Gang Ma, Lukas Holub, Bedangadas Mohanty, R. Fatemi, L. He, T. Nonaka, H. M. Spinka, Shaji Kumar, Todd Kinghorn, K. Krueger, J. Butterworth, A. Lipiec, A. Ogawa, Saehanseul Oh, Muhammad Usman Ashraf, J. Kvapil, W. Zha, D. Grosnick, Nilay Shah, B. S. Page, Xuan Zhang, S. Ramachandran, P. Chaloupka, Wei Xie, Y. F. Xu, H. W. Ke, J. M. Campbell, Jana Bielcikova, Y. Li, S. Singha, Alexandre Alarcon Do Passo Suaide, Ting Lin, Sergey Voloshin, Z. J. Xu, D. P. Kikola, Y. Wang, Y. Fisyak, O. Eyser, R. Aoyama, B. Stringfellow, Q. H. Xu, Z. Ye, J. Xu, J. H. Thomas, A. Aparin, S. Trentalange, Jaroslav Adam, J. W. Harris, K. Oh, Isaac Upsal, Hanna Paulina Zbroszczyk, D. G. Underwood, L. P. Zhou, J. Lidrych, D. L. Olvitt, Maowu Nie, T. G. Dedovich, K. Jiang, X. Huang, A. Kechechyan, P. Szymanski, J. D. Negrete, M. Cherney, F-H. Chang, Q. Yang, Lokesh Kumar, Hua Pei, S. K. Tripathy, Yanjun Wu, B. Pawlik, Pradip Kumar Sahu, P. Federicova, J. Bryslawskyj, C-Q. Li, H. Z. Huang, S. Vokal, J. Cheng, R. Witt, B. Huang, A. Gibson, Tetsuro Sugiura, R. Reed, G. Agakishiev, D. S. Gunarathne, N. Schmitz, E. Shahaliev, Y. J. Sun, B. Tu, Jongmin Lee, G. S. Averichev, A. H. Tang, N. Kulathunga, D. Cebra, M. Sergeeva, Michal Sumbera, C. Dilks, P. Sorensen, S. Mioduszewski, Peng Huo, A. Harlenderova, A. Taranenko, Zhanwen Zhu, J. M. Nelson, W. J. Llope, Catherine Tomkiel, J. H. Chen, N. Xu, P. Filip, I. Bunzarov, W. Guryn, R. L. Ray, V. A. Okorokov, R. Lacey, Prithwish Tribedy, B. K. Srivastava, R. Ma, S. W. Wissink, O. Matonoha, S. Kabana, Justin Ewigleben, G. Odyniec, Christina Markert, Alexander Jentsch, J. Y. Zhang, Y. Zhang, J. Fedorisin, M. M. Mondal, D. A. Morozov, A. Attri, N. Yu, Kejun Kang, L. V. Nogach, J. C. Dunlop, L. Wen, P. Liu, Sumit R. Das, Zubayer Ahammed, S. B. Nurushev, A. K. Bhati, D. Keane, Joseph Kwasizur, Nikolai Smirnov, L. G. Efimov, J. R. Adams, M. Shao, G. Van Buren, F. G. Atetalla, D. Smirnov, O. D. Tsai, O. Rusnakova, W. Solyst, S. S. Shi, T. Ljubicic, Q. Y. Shou, R. Pak, G. D. Westfall, W. Q. Shen, Xiang Sun, H. Liu, David Stewart, H. S. Matis, Sevil Salur, Niseem Magdy, H. Caines, D. Kapukchyan, M. Lomnitz, L. Didenko, I. Chakaberia, C. Zhong, E. C. Aschenauer, L. K. Kosarzewski, S. Margetis, James Brandenburg, X. Dong, W. W. Jacobs, K. N. Barish, J. Lauret, R. Lednicky, L. Kochenda, T. Tarnowsky, A. A. Derevschikov, Zhigang Xiao, T. Huang, Zongye Zhang, Y. Guo, Maksym Zyzak, I. G. Bordyuzhin, J. C. Webb, R. Seto, Yunpeng Liu, Derek Anderson, N. G. Minaev, J. A. Mazer, S. K. Radhakrishnan, L. Fulek, L. C. Bland, Chi Yang, J. Rusnak, A. F. Kraishan, L. Ruan, D. N. Svirida, Chong Kim, T. Todoroki, H. G. Ritter, Rafal Sikora, Jaroslav Bielcik, O. V. Rogachevskiy, J. Engelage, A. Quintero, G. Nigmatkulov, J. M. Landgraf, M. Strikhanov, J. Sandweiss, Nasim, Madan M. Aggarwal, Fuqiang Wang, D. K. Mishra, D. Kalinkin, A. Vossen, S. Esumi, W. Christie, Bernd Surrow, Andrey Vasiliev, N. Elsey, D. Mayes, Z. Chang, X.G. Li, W. B. Schmidke, Janet Elizabeth Seger, C. A. Gagliardi, I. M. Deppner, David Brown, F. Liu, Mariusz Przybycien, Y. Yang, R. D. Majka, J. Schambach, Anju Bhasin, G. Xie, A. J. Bassill, T. Niida, and A. Lebedev
Subjects: Physics, Particle physics, 010308 nuclear & particles physics, Pseudorapidity, 0103 physical sciences, Chatterjee, 010306 general physics, 01 natural sciences
Abstract: Author(s): Adam, J; Adamczyk, L; Adams, JR; Adkins, JK; Agakishiev, G; Aggarwal, MM; Ahammed, Z; Ajitanand, NN; Alekseev, I; Anderson, DM; Aoyama, R; Aparin, A; Arkhipkin, D; Aschenauer, EC; Ashraf, MU; Atetalla, F; Attri, A; Averichev, GS; Bai, X; Bairathi, V; Barish, K; Bassill, AJ; Behera, A; Bellwied, R; Bhasin, A; Bhati, AK; Bielcik, J; Bielcikova, J; Bland, LC; Bordyuzhin, IG; Brandenburg, JD; Brandin, AV; Brown, D; Bryslawskyj, J; Bunzarov, I; Butterworth, J; Caines, H; Calderon De La Barca Sanchez, M; Campbell, JM; Cebra, D; Chakaberia, I; Chaloupka, P; Chang, FH; Chang, Z; Chankova-Bunzarova, N; Chatterjee, A; Chattopadhyay, S; Chen, JH; Chen, X; Chen, X; Cheng, J; Cherney, M; Christie, W; Contin, G; Crawford, HJ; Das, S; Dedovich, TG; Deppner, IM; Derevschikov, AA; Didenko, L; Dilks, C; Dong, X; Drachenberg, JL; Dunlop, JC; Efimov, LG; Elsey, N; Engelage, J; Eppley, G; Esha, R; Esumi, S; Evdokimov, O; Ewigleben, J; Eyser, O; Fatemi, R; Fazio, S; Federic, P; Federicova, P; Fedorisin, J; Filip, P; Finch, E; Fisyak, Y; Flores, CE; Fulek, L; Gagliardi, CA; Galatyuk, T | Abstract: We present the first measurements of the longitudinal double-spin asymmetry ALL for dijets with at least one jet reconstructed within the pseudorapidity range 0.8lηl1.8. The dijets were measured in polarized pp collisions at a center-of-mass energy s=200 GeV. Values for ALL are determined for several distinct event topologies, defined by the jet pseudorapidities, and span a range of parton momentum fraction x down to x∼0.01. The measured asymmetries are found to be consistent with the predictions of global analyses that incorporate the results of previous RHIC measurements. They will provide new constraints on Δg(x) in this poorly constrained region when included in future global analyses.
Published: 2018

7. Azimuthal transverse single-spin asymmetries of inclusive jets and charged pions within jets from polarized-proton collisions at s=500 GeV

Author: J. M. Campbell, Jaroslav Bielcik, M. Calderon De La Barca Sanchez, A. I. Hamad, Sedigheh Jowzaee, G. Eppley, W. Christie, I. G. Alekseev, Maksym Zyzak, O. V. Rogachevskiy, M. A. Lisa, A. Quintero, J. C. Mei, T. G. Dedovich, J. Porter, J. C. Webb, J. Pluta, N. Chankova-Bunzarova, W. Li, Ivan Kisel, Andrey Vasiliev, I. K. Yoo, C. E. Flores, E. G. Judd, Anik Gupta, J. Lidrych, R. Seto, Nasim, R. Witt, Vitaly Okorokov, Jian Deng, S. Mioduszewski, D. G. Underwood, J. D. Roth, Rene Bellwied, Janet Elizabeth Seger, G. Agakishiev, D. S. Gunarathne, O. D. Tsai, J. Y. Zhang, Bernd Surrow, Frank Jm Geurts, Prithwish Tribedy, Q. H. Xu, B. K. Srivastava, Z. Ye, D. Cebra, N. Elsey, Jana Bielcikova, A. Taranenko, N. Yu, D. Mayes, J. K. Adkins, K. Kauder, Maowu Nie, W. Q. Shen, Xiang Sun, J. H. Thomas, X. Huang, A. Kechechyan, Kejun Kang, L. V. Nogach, Zhanwen Zhu, S. Kabana, W. B. Schmidke, J. C. Dunlop, L. Wen, C. Zhou, P. Sorensen, J. Xu, C. A. Gagliardi, M. R. Girard, L. P. Zhou, Sumit R. Das, G. Van Nieuwenhuizen, H. Liu, David Stewart, Justin Ewigleben, G. Odyniec, J. Cheng, Pradip Kumar Sahu, R. Fatemi, L. He, K. Krueger, Benjamin Schweid, S. B. Nurushev, D. Arkhipkin, Zubayer Ahammed, A. Hamed, K. Meehan, Q. Yang, Sevil Salur, R. E. Tribble, J. W. Harris, M. J. Skoby, Joseph Kwasizur, D. Kapukchyan, Z. H. Khan, N. N. Ajitanand, Q. Y. Shou, Jorn Henning Putschke, Xiao-yan Li, A. V. Brandin, L. Fulek, R. Pak, J. L. Drachenberg, L. Didenko, I. Chakaberia, Thorsten Sven Kollegger, M. Cherney, M. Shao, G. Van Buren, Olga Evdokimov, Barbara Antonina Trzeciak, Xiangming Sun, J. Bryslawskyj, Roli Esha, M. Tokarev, James Brandenburg, J. Engelage, J. Fujita, G. S. Averichev, L. C. Bland, G. Nigmatkulov, Daniel Nemes, Jie Zhao, T. Lin, S. Horvat, Lokesh Kumar, J. R. Adams, Hua Pei, S. K. Tripathy, J. L. Romero, Vipul Bairathi, S. Heppelmann, A. K. Bhati, D. Keane, W. Solyst, Jay Roberts, S. S. Shi, K. N. Barish, B. J. Summa, A. H. Tang, E. Finch, Nikolai Smirnov, H. W. Ke, Z. Chang, Xuedong Bai, M. Simko, P. Federicova, J. M. Landgraf, Shize Yang, T. D. S. Stanislaus, K. Poniatowska, I. Bunzarov, J. B. Zhang, L. G. Efimov, Zebo Tang, B. Huang, Chi Yang, Giacomo Contin, M. Strikhanov, H. H. Wieman, P. Chaloupka, W. Zha, J. E. Draper, T. Nonaka, T. K. Nayak, N. K. Pruthi, P. Bhattarai, R. S. Longacre, M. Posik, Isaac Upsal, Arabinda Behera, Z. J. Xu, M. Kocmanek, Wei Xie, S. Trentalange, D. N. Svirida, H. M. Spinka, S. Ramachandran, O. Eyser, Nihar Sahoo, X. C. Chen, A. Aparin, Y. Panebratsev, Y. Pandit, C. Perkins, J. Sandweiss, K. Yip, P. V. Shanmuganathan, D. Grosnick, S. Fazio, D. Mallick, B. Pawlik, N. Schmitz, A. Gibson, E. Shahaliev, H. Z. Huang, S. Vokal, Peng Huo, A. Harlenderova, Anthony Robert Timmins, Adam Ryszard Kisiel, G. Igo, S. Zhang, A. A. Derevschikov, L. Yi, S. Esumi, M. Saur, J. Bouchet, L. Krauth, H. J. Crawford, Chong Kim, W. Guryn, R. Lacey, J. H. Chen, K. D. Landry, H. G. Ritter, J. Butterworth, D. A. Morozov, Tetsuro Sugiura, J. Thäder, Rafal Sikora, Y. J. Sun, Y. F. Xu, C. Dilks, T. J. Humanic, Zongye Zhang, Abdel Nasser Tawfik, J. Fedorisin, M. M. Mondal, Y. Guo, I. G. Bordyuzhin, B. S. Page, D. P. Kikola, B. Stringfellow, J. Kvapil, Nilay Shah, Xiaofeng Zhu, A. Ogawa, C-Q. Li, M. J. Rehbein, Christina Markert, D. Smirnov, O. Rusnakova, H. S. Matis, L. K. Kosarzewski, W. W. Jacobs, J. Lauret, R. Lednicky, L. Kochenda, T. Tarnowsky, I. M. Deppner, David Brown, F. Liu, Mariusz Przybycien, Y. Yang, R. D. Majka, J. Schambach, Anju Bhasin, T. Niida, A. Lebedev, Z. Shi, N. Kulathunga, N. Xu, P. Filip, Xiaofeng Luo, Guannan Xie, Xuan Zhang, R. Aoyama, Guo-Liang Ma, Hanna Paulina Zbroszczyk, G. D. Westfall, A. S. Hirsch, P. Kravtsov, R. Reed, A. M. Schmah, Bedangadas Mohanty, Michal Sumbera, S. W. Wissink, Y. Zhang, S. Mizuno, D. L. Olvitt, J. Rusnak, A. F. Kraishan, Arka Chatterjee, L. Ruan, Yu-Gang Ma, Muhammad Usman Ashraf, M. K. Mustafa, T. Todoroki, J. M. Nelson, W. J. Llope, Sergey Voloshin, Y. Li, S. Singha, Alexandre Alarcon Do Passo Suaide, Alexander Jentsch, A. Attri, K. Jiang, Y. Wang, Y. Fisyak, Zhigang Xiao, P. Liu, Yanjun Wu, T. Huang, F. Videbæk, Lin Ma, K. Oh, G. Webb, Yunpeng Liu, Sukalyan Chattopadhyay, M. Sergeeva, Derek Anderson, Siwei Luo, N. G. Minaev, P. Seyboth, Z. Feng, Jiangyong Jia, Leszek Adamczyk, P. Federic, Z. W. Miller, D. Tlusty, G. Wang, C. Zhong, E. C. Aschenauer, S. Margetis, X. Dong, E. P. Sichtermann, T. Ullrich, Jongmin Lee, R. L. Ray, R. Ma, Madan M. Aggarwal, T. Ljubicic, Fuqiang Wang, D. K. Mishra, Niseem Magdy, H. Caines, M. Lomnitz, D. Kalinkin, A. Vossen, and N. Herrmann
Subjects: Physics, Nuclear physics, Particle physics, Pion, 010308 nuclear & particles physics, 0103 physical sciences, Chatterjee, Fragmentation function, Beam polarization, 010306 general physics, 01 natural sciences
Abstract: Author(s): AdamczyK, L; Adams, JR; Adkins, JK; Agakishiev, G; Aggarwal, MM; Ahammed, Z; Ajitanand, NN; Alekseev, I; Anderson, DM; Aoyama, R; Aparin, A; Arkhipkin, D; Aschenauer, EC; Ashraf, MU; Attri, A; Averichev, GS; Bai, X; Bairathi, V; Barish, K; Behera, A; Bellwied, R; Bhasin, A; Bhati, AK; Bhattarai, P; BielciK, J; Bielcikova, J; Bland, LC; Bordyuzhin, IG; Bouchet, J; Brandenburg, JD; Brandin, AV; Brown, D; Bryslawskyj, J; Bunzarov, I; Butterworth, J; Caines, H; Calderon De La Barca Sanchez, M; Campbell, JM; Cebra, D; Chakaberia, I; Chaloupka, P; Chang, Z; Chankova-Bunzarova, N; Chatterjee, A; Chattopadhyay, S; Chen, X; Chen, X; Chen, JH; Cheng, J; Cherney, M; Christie, W; Contin, G; Crawford, HJ; Das, S; Dedovich, TG; Deng, J; Deppner, IM; Derevschikov, AA; Didenko, L; Dilks, C; Dong, X; Drachenberg, JL; Draper, JE; Dunlop, JC; Efimov, LG; Elsey, N; Engelage, J; Eppley, G; Esha, R; Esumi, S; Evdokimov, O; Ewigleben, J; Eyser, O; Fatemi, R; Fazio, S; Federic, P; Federicova, P; Fedorisin, J; Feng, Z; Filip, P; Finch, E; FisyaK, Y; Flores, CE; Fujita, J; FuleK, L | Abstract: We report the first measurements of transverse single-spin asymmetries for inclusive jet and jet+π± production at midrapidity from transversely polarized proton-proton collisions at s=500 GeV. The data were collected in 2011 with the STAR detector sampled from 23 pb-1 integrated luminosity with an average beam polarization of 53%. Asymmetries are reported for jets with transverse momenta 6
Published: 2018

8. Dijet imbalance measurements in Au+Au and pp collisions at sNN=200 GeV at STAR

Author: Jana Bielcikova, N. Xu, P. Filip, Guannan Xie, J. L. Romero, Xuan Zhang, Anik Gupta, P. Pile, G. D. Westfall, Madan M. Aggarwal, Xiaofeng Luo, E. Finch, L. Yi, Xuedong Bai, Robert Vertesi, Hanna Paulina Zbroszczyk, M. Tokarev, Yang Yang, J. M. Campbell, Jun Deng, T. Nonaka, Frank Jm Geurts, Wei Xie, A. Aparin, Y. Pandit, N. Schmitz, E. Shahaliev, Guo-Liang Ma, Fuqiang Wang, D. K. Mishra, J. W. Harris, Q. H. Xu, P. Sorensen, J. Xu, J. Engelage, H. G. Ritter, A. S. Hirsch, P. Kravtsov, A. M. Schmah, A. Manion, D. Kalinkin, T. G. Dedovich, Xiaofeng Zhu, Xiangming Sun, Mukesh Sharma, G. Wang, S. Heppelmann, J. Porter, Rafal Sikora, K. Meehan, G. Nigmatkulov, R. Reed, P. Bhattarai, L. Didenko, I. Chakaberia, T. D. S. Stanislaus, B. J. Summa, K. Poniatowska, S. K. Gupta, A. Vossen, Muhammad Usman Ashraf, A. Ogawa, Isaac Upsal, Giacomo Contin, Jorn Henning Putschke, J. M. Landgraf, A. H. Tang, H. H. Wieman, Roli Esha, A. V. Brandin, O. D. Tsai, G. Agakishiev, D. S. Gunarathne, Hao Qiu, Jie Zhao, T. Lin, James Brandenburg, A. Sharma, Arka Chatterjee, S. Esumi, J. B. Zhang, D. D. Koetke, M. Strikhanov, D. Cebra, Sergey Voloshin, F. Videbæk, J. E. Draper, I. K. Yoo, S. Ramachandran, S. Horvat, O. Eyser, G. Webb, Nihar Sahoo, K. Xin, Zhigang Xiao, T. Huang, I. Bunzarov, C-Q. Li, M. J. Rehbein, M. Calderon De La Barca Sanchez, A. I. Hamad, R. P. Scharenberg, Christina Markert, L. Song, Vipul Bairathi, D. Smirnov, O. Rusnakova, W. Q. Shen, L. C. Bland, H. S. Matis, B. Huang, X. C. Chen, Z. J. Sun, S. McKinzie, P. Huck, S. Kabana, M. M. Mondal, Jaroslav Bielcik, L. E. Dunkelberger, Sedigheh Jowzaee, N. K. Pruthi, Xiang Li, A. M. Poskanzer, Z. Ye, L. K. Kosarzewski, Yunpeng Liu, Derek Anderson, W. W. Jacobs, J. Lauret, N. G. Minaev, M. A.C. Lamont, K. Jiang, J. Sandweiss, Sukalyan Chattopadhyay, J. Y. Zhang, H. Z. Huang, Yanjun Wu, Anthony Robert Timmins, Adam Ryszard Kisiel, H. J. Crawford, S. Vokal, O. V. Rogachevskiy, Tetsuro Sugiura, Y. J. Sun, C. Dilks, Nasim, A. Quintero, X. Huang, A. Kechechyan, W. Zha, R. Lednicky, L. Kochenda, R. Haque, T. Tarnowsky, I. G. Alekseev, K. Yip, J. S. Wang, G. Eppley, D. N. Svirida, R. S. Longacre, Zebo Tang, Leo Clifford Greiner, M. K. Mustafa, Y. Li, S. Singha, M. A. Lisa, J. C. Mei, N. Yu, Z. Feng, M. Lomnitz, Y. Fisyak, Kejun Kang, L. V. Nogach, Sumit R. Das, M. Zyzak, G. Van Nieuwenhuizen, J. Pluta, W. Li, D. Garand, Sevil Salur, Y. Wang, C. E. Flores, E. G. Judd, R. R. Debbe, C. Zhong, Shangfeng Yang, J. H. Chen, C. Yang, Pradip Kumar Sahu, P. V. Shanmuganathan, C. Perkins, E. C. Aschenauer, P. Federic, A. A. Derevschikov, Justin Ewigleben, Lin Ma, Siwei Luo, K. Oh, D. L. Olvitt, J. K. Adkins, R. Fatemi, L. He, Zongye Zhang, I. G. Bordyuzhin, J. D. Roth, Rene Bellwied, J. Rusnak, R. Stock, P. Seyboth, Vitaly Okorokov, R. E. Tribble, A. F. Kraishan, L. Ruan, Leszek Adamczyk, Z. H. Khan, G. Odyniec, W. Guryn, Y. Zoulkarneeva, G. Igo, J. Novak, D. A. Morozov, W. J. Llope, Alexander Jentsch, Bernd Surrow, Z. W. Miller, A. K. Bhati, D. Keane, B. Sharma, J. Bouchet, M. R. Girard, A. Attri, K. D. Landry, N. Elsey, Gerald W Hoffmann, T. Todoroki, D. Tlusty, Nikolai Smirnov, I. Sakrejda, K. Kauder, S. Margetis, X. Dong, J. Butterworth, J. C. Webb, K. Krueger, W. B. Schmidke, C. A. Gagliardi, L. G. Efimov, M. J. Skoby, Yinina Ma, I. Kisel, T. K. Nayak, E. P. Sichtermann, Y. F. Xu, L. Fulek, W. Solyst, Z. Chang, Y. Panebratsev, J. Fedorisin, D. Grosnick, Nilay Shah, T. J. Humanic, Bedangadas Mohanty, R. Aoyama, M. Posik, Abdel Nasser Tawfik, M. Cherney, T. Ullrich, H. M. Spinka, Lokesh Kumar, D. G. Underwood, Hua Pei, S. K. Tripathy, J. H. Thomas, Q. Yang, C. M. Du, J. Jia, L. P. Zhou, H. S. Xu, S. B. Nurushev, B. S. Page, Y. Guo, Jongmin Lee, R. L. Ray, J. Cheng, R. Ma, M. Stepanov, T. Ljubicic, L. C. De Silva, D. P. Kikola, G. S. Averichev, B. Stringfellow, Niseem Magdy, H. Caines, M. Shao, Y. X. Pan, G. Van Buren, S. S. Shi, Michal Sumbera, S. Fazio, S. W. Wissink, Y. Zhang, D. Arkhipkin, J. Thäder, A. Hamed, P. Chaloupka, Z. J. Xu, S. Trentalange, B. Pawlik, A. Gibson, S. Zhang, David Brown, F. Liu, Miroslav Simko, Mariusz Przybycien, R. D. Majka, J. Schambach, W. Christie, Andrey Vasiliev, Janet Elizabeth Seger, Anju Bhasin, T. Niida, A. Lebedev, Z. Shi, R. Witt, S. Mioduszewski, Donald M. McDonald, Prithwish Tribedy, B. K. Srivastava, J. C. Dunlop, L. Wen, Zubayer Ahammed, Q. Y. Shou, R. Pak, J. L. Drachenberg, Olga Evdokimov, Jay Roberts, and H. W. Ke
Subjects: Physics, Nuclear reaction, Particle physics, 010308 nuclear & particles physics, media_common.quotation_subject, Hadron, General Physics and Astronomy, Jet (particle physics), 01 natural sciences, Asymmetry, Nuclear physics, Momentum, 0103 physical sciences, Quark–gluon plasma, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Jet quenching, media_common, STAR detector
Abstract: We report the first dijet transverse momentum asymmetry measurements from Au+Au and pp collisions at RHIC. The two highest-energy back-to-back jets reconstructed from fragments with transverse momenta above 2 GeV/c display a significantly higher momentum imbalance in heavy-ion collisions than in the pp reference. When reexamined with correlated soft particles included, we observe that these dijets then exhibit a unique new feature-momentum balance is restored to that observed in pp for a jet resolution parameter of R=0.4, while rebalancing is not attained with a smaller value of R=0.2.
Published: 2017

9. Measurement of the cross section and longitudinal double-spin asymmetry for dijet production in polarized pp collisions at s=200 GeV

Author: Nasim, Jongmin Lee, R. L. Ray, R. Ma, D. Kalinkin, T. Ljubicic, B. Pawlik, S. Heppelmann, D. Tlusty, Niseem Magdy, H. Caines, M. Calderon De La Barca Sanchez, A. I. Hamad, Sedigheh Jowzaee, J. K. Adkins, A. Quintero, B. J. Summa, S. Zhang, S. Fazio, Zongye Zhang, P. Chaloupka, Ting Lin, S. Trentalange, V. A. Okorokov, R. Fatemi, L. He, P. Seyboth, H. Liu, I. G. Bordyuzhin, Madan M. Aggarwal, Arka Chatterjee, P. Sorensen, Joseph Kwasizur, Benjamin Schweid, T. J. Humanic, D. Arkhipkin, A. Hamed, Qi Yang, M. Saur, Fuqiang Wang, D. K. Mishra, Dukhishyam Mallick, Niladribihari Sahoo, Z. H. Khan, I. Upsal, Leszek Adamczyk, Z. W. Miller, J. Thäder, Chong Kim, A. V. Brandin, J. Porter, Ivan Kisel, M. Sergeeva, Xin Chen, M. Cherney, S. Ramachandran, O. Eyser, A. Vossen, Xiangming Sun, Lokesh Kumar, Hua Pei, I. K. Yoo, E. P. Sichtermann, S. Esumi, S. K. Tripathy, M. Shao, G. Van Buren, Q. H. Xu, J. Xu, M. K. Mustafa, H. G. Ritter, Vipul Bairathi, Abdel Nasser Tawfik, B. Huang, Jana Bielcikova, J. Engelage, G. Nigmatkulov, Y. F. Wu, M. M. Mondal, C. E. Flores, E. G. Judd, Jaroslav Bielcik, J. Rusnak, A. F. Kraishan, L. Ruan, Justin Ewigleben, A. Gibson, C. Zhong, David Brown, J. Putschke, Xiaofeng Zhu, T. Ullrich, S. S. Shi, Y. Li, Guo-Liang Ma, A. Ogawa, K. Poniatowska, S. K. Gupta, Giacomo Contin, N. N. Ajitanand, Li Yi, Jie Zhang, J. M. Landgraf, Yu-Gang Ma, T. Kollegger, Bedangadas Mohanty, Muhammad Usman Ashraf, Sergey Voloshin, J. W. Harris, C-Q. Li, J. H. Thomas, J. M. Nelson, M. Strikhanov, B. S. Page, Rafal Sikora, G. Wang, D. P. Kikola, Guannan Xie, H. Z. Huang, Xuan Zhang, O. V. Rogachevskiy, S. Vokal, L. Didenko, I. Chakaberia, Manish Sharma, P. Federicova, B. Stringfellow, T. Todoroki, D. Kapukchyan, James Brandenburg, N. K. Pruthi, J. Fujita, P. Federic, L. P. Zhou, Anthony Robert Timmins, Adam Ryszard Kisiel, A. S. Hirsch, R. Aoyama, M. J. Rehbein, Christina Markert, O. Rusnakova, Zebo Tang, L. C. Bland, K. N. Barish, N. Kulathunga, N. Xu, P. Filip, H. S. Matis, G. Eppley, H. J. Crawford, P. V. Shanmuganathan, K. Yip, G. S. Averichev, G. Odyniec, J. Sandweiss, L. K. Kosarzewski, R. R. Debbe, Y. F. Xu, M. Tokarev, Yang Yang, J. L. Romero, P. Pile, G. D. Westfall, S. Das, W. W. Jacobs, T. Tarnowsky, P. Kravtsov, A. M. Schmah, Dmitry Smirnov, F. Liu, Miroslav Simko, Shangfeng Yang, J. H. Chen, J. C. Webb, Z. Chang, L. E. Dunkelberger, Mariusz Przybycien, Archana Sharma, C. Yang, Michal Sumbera, Bernd Surrow, J. Lauret, R. S. Longacre, Hao Qiu, A. Gupta, J. Pluta, E. Finch, M. Zyzak, D. A. Morozov, W. Solyst, M. Posik, Arabinda Behera, H. M. Spinka, Hanna Paulina Zbroszczyk, Xuedong Bai, R. Lednicky, T. D. S. Stanislaus, S. W. Wissink, N. Elsey, K. Jiang, C. Perkins, E. C. Aschenauer, Y. Wang, L. Kochenda, N. Chankova-Bunzarova, W. Li, A. A. Derevschikov, Y. Zhang, X. G. Luo, A. H. Tang, H. H. Wieman, G. Igo, I. Bunzarov, J. D. Roth, S. Margetis, Rene Bellwied, W. B. Schmidke, J. E. Draper, J. Bouchet, L. Krauth, Wei Xie, G. J. van Nieuwenhuizen, R. Reed, Zhigang Xiao, C. A. Gagliardi, T. Huang, R. E. Tribble, K. D. Landry, K. Kauder, A. Taranenko, I. G. Alekseev, M. A. Lisa, J. Butterworth, F. Videbæk, Y. Fisyak, G. Webb, Yunpeng Liu, Derek Anderson, J. C. Mei, D. N. Svirida, A. Aparin, Sukalyan Chattopadhyay, Lin Ma, X. Dong, K. Oh, N. G. Minaev, Gerald W Hoffmann, R. Seto, M. J. Skoby, Frank Jm Geurts, Y. Pandit, Z. Ye, N. Schmitz, W. J. Llope, Maowu Nie, C. Zhou, R. D. Majka, E. Shahaliev, X. Huang, S. B. Nurushev, A. Kechechyan, Pradip Kumar Sahu, K. Meehan, T. Nonaka, J. Kvapil, Jindrich Lidrych, Nilay Shah, Alexander Jentsch, Siwei Luo, J. L. Drachenberg, Jian Deng, S. Mizuno, Z. Feng, M. Lomnitz, Roli Esha, A. Attri, Jie Zhao, S. Horvat, G. Agakishiev, D. S. Gunarathne, M. R. Girard, D. L. Olvitt, Jiangyong Jia, D. Cebra, P. Bhattarai, J. Schambach, H. W. Ke, L. Fulek, W. Zha, Zhanwen Zhu, W. Christie, Tetsuro Sugiura, Y. J. Sun, C. Dilks, S. Kabana, Peng Huo, A. Harlenderova, Subhash Singha, Andrey Vasiliev, X. M. Sun, W. Guryn, R. Lacey, X.G. Li, Janet Elizabeth Seger, J. Fedorisin, Anju Bhasin, K. Kang, T. Niida, A. Lebedev, D. G. Underwood, Z. Shi, J. Cheng, L. C. De Silva, R. Witt, S. Mioduszewski, Prithwish Tribedy, B. K. Srivastava, J. C. Dunlop, L. Wen, Zubayer Ahammed, Q. Y. Shou, R. Pak, Olga Evdokimov, Barbara Antonina Trzeciak, Jay Roberts, K. Krueger, J. M. Campbell, T. G. Dedovich, J. Y. Zhang, N. Yu, L. V. Nogach, O. D. Tsai, L. Song, W. Q. Shen, D. Garand, Sevil Salur, A. K. Bhati, D. Keane, L. G. Efimov, T. K. Nayak, M. Kocmanek, Peng Liu, Y. Panebratsev, D. Grosnick, Z. Z. Xu, Nikita Smirnov, and Y. Guo
Subjects: Physics, Particle physics, 010308 nuclear & particles physics, media_common.quotation_subject, High Energy Physics::Phenomenology, Perturbative QCD, Polarization (waves), 01 natural sciences, Asymmetry, Gluon, Nuclear physics, 0103 physical sciences, Quark–gluon plasma, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, media_common
Abstract: We report the first measurement of the longitudinal double-spin asymmetry A(LL) for midrapidity dijet production in polarized pp collisions at a center-of-mass energy of root s = 200 GeV. The dijet cross section was measured and is shown to be consistent with next-to-leading order (NLO) perturbative QCD predictions. A(LL) results are presented for two distinct topologies, defined by the jet pseudorapidities, and are compared to predictions from several recent NLO global analyses. The measured asymmetries, the first such correlation measurements, support those analyses that find positive gluon polarization at the level of roughly 0.2 over the region of Bjorken-x > 0.05.
Published: 2017

10. Elliptic flow of electrons from heavy-flavor hadron decays in Au + Au collisions at sNN=200 , 62.4, and 39 GeV

Author: P. Filip, P. Pile, G. D. Westfall, S. Das, I. G. Alekseev, M. A. Lisa, J. C. Mei, A. Gupta, M. Calderon De La Barca Sanchez, A. I. Hamad, Sedigheh Jowzaee, N. N. Ajitanand, Peng Huo, A. Harlenderova, M. Tokarev, Yang Yang, W. Guryn, R. Lacey, C-Q. Li, Dukhishyam Mallick, Justin Ewigleben, A. Gibson, T. D. S. Stanislaus, C. Zhong, J. Fedorisin, H. H. Wieman, Zhigang Xiao, David Brown, T. Kollegger, T. Huang, Yunpeng Liu, Derek Anderson, N. G. Minaev, J. Rusnak, A. F. Kraishan, Arka Chatterjee, E. P. Sichtermann, F. Liu, M. J. Rehbein, Christina Markert, L. Ruan, W. J. Llope, C. Zhou, Miroslav Simko, Mariusz Przybycien, F. Videbæk, T. Todoroki, K. Yip, R. R. Debbe, O. Rusnakova, H. S. Matis, J. C. Webb, J. C. Dunlop, L. Wen, Zebo Tang, G. Webb, Jaroslav Bielcik, Alexander Jentsch, D. G. Underwood, M. K. Mustafa, Sukalyan Chattopadhyay, L. K. Kosarzewski, W. W. Jacobs, R. D. Majka, G. Eppley, A. Attri, Y. Li, Zubayer Ahammed, J. Lauret, Jie Zhang, J. L. Drachenberg, J. Schambach, A. V. Brandin, P. Bhattarai, T. Ullrich, O. V. Rogachevskiy, J. Cheng, Wei Xie, Z. Ye, P. Seyboth, Siwei Luo, Vipul Bairathi, Anju Bhasin, Maowu Nie, X. Huang, A. Kechechyan, A. Aparin, P. Federic, J. H. Thomas, L. C. De Silva, Pradip Kumar Sahu, T. Nonaka, C. Perkins, R. Lednicky, L. Kochenda, R. S. Longacre, Q. Y. Shou, D. Kalinkin, S. Heppelmann, S. Mizuno, Z. Feng, James Brandenburg, J. W. Harris, K. Kang, T. Niida, Leszek Adamczyk, M. Kocmanek, Peng Liu, Y. Panebratsev, D. Grosnick, M. Lomnitz, L. P. Zhou, Y. Pandit, A. Lebedev, P. V. Shanmuganathan, Z. Shi, N. Schmitz, B. J. Summa, E. Shahaliev, R. Pak, Roli Esha, T. Tarnowsky, M. J. Skoby, Frank Jm Geurts, J. Pluta, M. Zyzak, W. Xu, S. Horvat, Z. W. Miller, D. L. Olvitt, L. E. Dunkelberger, Jiangyong Jia, X. G. Luo, A. H. Tang, G. S. Averichev, Bernd Surrow, N. Elsey, Z. Z. Xu, N. Chankova-Bunzarova, J. Kvapil, J. L. Romero, E. C. Aschenauer, J. Putschke, Xiaofeng Zhu, R. Witt, I. Bunzarov, G. Igo, J. Porter, W. Christie, W. Li, S. Ramachandran, S. Margetis, K. Meehan, Jindrich Lidrych, W. Zha, O. Eyser, H. W. Ke, L. Fulek, A. A. Derevschikov, W. B. Schmidke, Nikita Smirnov, Nilay Shah, C. A. Gagliardi, S. Mioduszewski, E. Finch, X. Dong, Ivan Kisel, A. Ogawa, Subhash Singha, Xuedong Bai, J. Bouchet, Andrey Vasiliev, J. D. Roth, Rene Bellwied, Madan M. Aggarwal, O. D. Tsai, Fuqiang Wang, D. K. Mishra, Guo-Liang Ma, J. M. Campbell, Li Yi, K. D. Landry, K. Kauder, A. Taranenko, J. Butterworth, Jana Bielcikova, Tetsuro Sugiura, Prithwish Tribedy, B. K. Srivastava, X.G. Li, Janet Elizabeth Seger, A. Vossen, T. G. Dedovich, L. Song, S. Fazio, Zongye Zhang, Y. F. Wu, W. Q. Shen, R. E. Tribble, Y. J. Sun, S. Esumi, Y. Guo, A. S. Hirsch, Muhammad Usman Ashraf, Sergey Voloshin, C. Dilks, Jize Zhao, Jongmin Lee, R. L. Ray, I. G. Bordyuzhin, M. Saur, Olga Evdokimov, Barbara Antonina Trzeciak, R. Ma, P. Kravtsov, A. M. Schmah, Dmitry Smirnov, J. Y. Zhang, Qi Yang, S. Kabana, D. Garand, N. Yu, L. V. Nogach, K. Jiang, M. Sergeeva, Gerald W Hoffmann, Q. H. Xu, T. Ljubicic, Y. Wang, G. J. van Nieuwenhuizen, L. Didenko, I. Chakaberia, Sevil Salur, H. G. Ritter, H. Caines, Rafal Sikora, A. Quintero, J. Xu, Y. Fisyak, Jay Roberts, Abdel Nasser Tawfik, Z. Chang, Lin Ma, L. C. Bland, K. Oh, B. Huang, A. K. Bhati, D. Keane, Archana Sharma, K. Krueger, Y. F. Xu, R. Stock, L. G. Efimov, G. Wang, K. Poniatowska, S. K. Gupta, M. Posik, T. K. Nayak, N. K. Pruthi, Giacomo Contin, Arabinda Behera, B. S. Page, Manish Sharma, H. M. Spinka, P. Federicova, D. N. Svirida, D. P. Kikola, Hao Qiu, W. Solyst, B. Stringfellow, Guannan Xie, Xuan Zhang, H. Liu, R. Aoyama, Hanna Paulina Zbroszczyk, R. Reed, Jian Deng, Benjamin Schweid, Anthony Robert Timmins, Adam Ryszard Kisiel, T. J. Humanic, D. Arkhipkin, A. Hamed, J. Engelage, G. Nigmatkulov, G. Agakishiev, D. S. Gunarathne, D. Cebra, J. M. Landgraf, M. Strikhanov, H. J. Crawford, J. K. Adkins, M. R. Girard, R. Fatemi, L. He, H. Z. Huang, S. Vokal, G. Odyniec, J. Sandweiss, Nasim, I. Upsal, P. Chaloupka, Ting Lin, D. Tlusty, Shangfeng Yang, J. Thäder, J. H. Chen, S. Trentalange, N. Magdy, M. Cherney, Xiangming Sun, Niladribihari Sahoo, Lokesh Kumar, D. A. Morozov, Bedangadas Mohanty, Hua Pei, S. K. Tripathy, Z. H. Khan, B. Pawlik, S. Zhang, V. A. Okorokov, A. M. Poskanzer, Zhanwen Zhu, Michal Sumbera, S. W. Wissink, Y. Zhang, Xuliang Chen, J. E. Draper, I. K. Yoo, M. M. Mondal, C. E. Flores, E. G. Judd, X. M. Sun, C. Yang, S. B. Nurushev, P. Sorensen, Joseph Kwasizur, M. Shao, G. Van Buren, S. S. Shi, J. M. Nelson, Y. G. Ma, N. Kulathunga, and N. Xu
Subjects: Physics, Particle physics, 010308 nuclear & particles physics, Elliptic flow, Hadron, Elementary particle, Fermion, Electron, 01 natural sciences, Charged particle, Charm quark, Nuclear physics, 0103 physical sciences, 010306 general physics, Lepton
Abstract: Author(s): Adamczyk, L; Adkins, JK; Agakishiev, G; Aggarwal, MM; Ahammed, Z; Ajitanand, NN; Alekseev, I; Anderson, DM; Aoyama, R; Aparin, A; Arkhipkin, D; Aschenauer, EC; Ashraf, MU; Attri, A; Averichev, GS; Bai, X; Bairathi, V; Behera, A; Bellwied, R; Bhasin, A; Bhati, AK; Bhattarai, P; Bielcik, J; Bielcikova, J; Bland, LC; Bordyuzhin, IG; Bouchet, J; Brandenburg, JD; Brandin, AV; Brown, D; Bunzarov, I; Butterworth, J; Caines, H; Calderon De La Barca Sanchez, M; Campbell, JM; Cebra, D; Chakaberia, I; Chaloupka, P; Chang, Z; Chankova-Bunzarova, N; Chatterjee, A; Chattopadhyay, S; Chen, X; Chen, JH; Chen, X; Cheng, J; Cherney, M; Christie, W; Contin, G; Crawford, HJ; Das, S; De Silva, LC; Debbe, RR; Dedovich, TG; Deng, J; Derevschikov, AA; Didenko, L; Dilks, C; Dong, X; Drachenberg, JL; Draper, JE; Dunkelberger, LE; Dunlop, JC; Efimov, LG; Elsey, N; Engelage, J; Eppley, G; Esha, R; Esumi, S; Evdokimov, O; Ewigleben, J; Eyser, O; Fatemi, R; Fazio, S; Federic, P; Federicova, P; Fedorisin, J; Feng, Z; Filip, P; Finch, E; Fisyak, Y; Flores, CE; Fulek, L; Gagliardi, CA; Garand, D | Abstract: We present measurements of elliptic flow (v2) of electrons from the decays of heavy-flavor hadrons (eHF) by the STAR experiment. For Au+Au collisions at sNN=200 GeV we report v2, for transverse momentum (pT) between 0.2 and 7 GeV/c, using three methods: the event plane method (v2{EP}), two-particle correlations (v2{2}), and four-particle correlations (v2{4}). For Au+Au collisions at sNN=62.4 and 39 GeV we report v2{2} for pTl2GeV/c. v2{2} and v2{4} are nonzero at low and intermediate pT at 200 GeV, and v2{2} is consistent with zero at low pT at other energies. The v2{2} at the two lower beam energies is systematically lower than at sNN=200 GeV for pTl1GeV/c. This difference may suggest that charm quarks interact less strongly with the surrounding nuclear matter at those two lower energies compared to sNN=200 GeV.
Published: 2017

11. Measurement of elliptic flow of light nuclei atsNN=200, 62.4, 39, 27, 19.6, 11.5, and 7.7 GeV at the BNL Relativistic Heavy Ion Collider

Author: A. V. Brandin, K. Xin, J. L. Romero, Amal Sarkar, Bernd Surrow, Vipul Bairathi, Xuedong Bai, D. Kalinkin, M. R. Girard, S. Heppelmann, B. J. Summa, J. C. Dunlop, L. Wen, W. B. Schmidke, P. Bhattarai, Nasim, B. Pawlik, K. Poniatowska, Zubayer Ahammed, C. A. Gagliardi, S. Ramachandran, N. Xu, P. Filip, O. Eyser, S. K. Gupta, Giacomo Contin, Qi Yang, Q. H. Xu, J. Xu, P. Sorensen, Y. J. Sun, James Brandenburg, D. Tlusty, J. Y. Zhang, N. Yu, L. V. Nogach, C. Dilks, Sumit R. Das, M. Calderon De La Barca Sanchez, A. I. Hamad, Roli Esha, M. Shao, Y. X. Pan, G. Van Buren, X. C. Chen, Q. Y. Shou, P. Pile, G. D. Westfall, P. V. Shanmuganathan, S. Kabana, Madan M. Aggarwal, Fuqiang Wang, D. K. Mishra, Jie Zhao, S. Horvat, S. S. Shi, A. Gupta, T. Tarnowsky, Z. H. Khan, R. Pak, Wei Xie, P. Huck, L. E. Dunkelberger, I. Sakrejda, J. H. Thomas, Bedangadas Mohanty, J. M. Campbell, T. G. Dedovich, Guannan Xie, Xuan Zhang, A. Aparin, Anthony Robert Timmins, A. Gibson, G. Eppley, Rihan Haque, J. Engelage, G. Nigmatkulov, Adam Ryszard Kisiel, L. P. Zhou, A. Vossen, Manish Sharma, Y. Pandit, H. J. Crawford, W. Zha, H. Z. Huang, A. A. Derevschikov, S. Vokal, J. M. Landgraf, Abdel Nasser Tawfik, N. Schmitz, E. Shahaliev, M. Strikhanov, R. Witt, Y. Zoulkarneeva, C. Zhong, J. Pluta, M. Zyzak, R. S. Longacre, W. Li, S. McKinzie, R. Varma, J. K. Adkins, S. Mioduszewski, G. Odyniec, J. Sandweiss, R. Fatemi, D. G. Underwood, Zebo Tang, J. Rusnak, A. F. Kraishan, L. He, Arka Chatterjee, Hanna Paulina Zbroszczyk, Jaroslav Bielcik, B. S. Page, Haiyan Wang, Rene Bellwied, Donald M. McDonald, Shangfeng Yang, D. P. Kikola, L. Ruan, J. Thäder, Prithwish Tribedy, B. K. Srivastava, Leo Clifford Greiner, Jie Zhang, I. Upsal, Y. F. Wu, B. Stringfellow, X. M. Sun, J. H. Chen, G. S. Averichev, Basanta Kumar Nandi, R. E. Tribble, S. Zhang, Olga Evdokimov, C. Perkins, G. Igo, J. Porter, J. W. Harris, J. Novak, B. Sharma, J. Bouchet, C. Yang, T. Todoroki, J. Cheng, Jiangyong Jia, O. V. Rogachevskiy, Nilay Shah, H. J. Jang, Gerald W Hoffmann, J. C. Webb, M. Cherney, Michal Sumbera, V. A. Okorokov, D. A. Morozov, L. C. De Silva, Hua Pei, Jay Roberts, Ivan Kisel, M. K. Mustafa, S. K. Tripathy, A. M. Poskanzer, D. D. Koetke, K. D. Landry, K. Kauder, J. Butterworth, M. A. C. Lamont, S. B. Nurushev, Hao Qiu, W. Solyst, Zhigang Xiao, M. J. Skoby, Frank Jm Geurts, K. Krueger, S. W. Wissink, P. Yepes, Y. Zhang, T. Huang, X. G. Luo, B. Di Ruzza, Jana Bielcikova, A. H. Tang, Y. Li, T. J. Humanic, D. Arkhipkin, A. Hamed, B. Huang, J. E. Draper, K. Meehan, N. G. Minaev, Robert Vertesi, Jian Deng, K. Yip, G. Agakishiev, D. S. Gunarathne, I. Bunzarov, D. Cebra, Z. Chang, J. S. Wang, W. Guryn, R. R. Debbe, I. K. Yoo, L. Didenko, I. Chakaberia, N. K. Pruthi, P. Chaloupka, Ting Lin, I. G. Alekseev, M. M. Mondal, C. E. Flores, E. G. Judd, M. A. Lisa, J. C. Mei, S. Trentalange, M. Posik, W. J. Llope, Sergey Voloshin, H. M. Spinka, Lokesh Kumar, K. Jiang, Y. Wang, J. Fedorisin, Alexander Jentsch, P. Federic, Maxence Vandenbroucke, A. Attri, S. Y. Noh, Yu-Gang Ma, J. Putschke, Xiaofeng Zhu, A. Ogawa, C-Q. Li, R. P. Scharenberg, Christina Markert, O. Rusnakova, H. S. Matis, L. K. Kosarzewski, W. W. Jacobs, J. Lauret, R. Lednicky, L. Kochenda, S. Fazio, Zongye Zhang, I. G. Bordyuzhin, W. Christie, M. Tokarev, Yang Yang, Subhash Singha, Andrey Vasiliev, T. D. S. Stanislaus, H. H. Wieman, O. D. Tsai, Z. Ye, X. Huang, A. Kechechyan, Pradip Kumar Sahu, X.G. Li, L. Song, H. W. Ke, L. Fulek, W. Q. Shen, Janet Elizabeth Seger, M. Stepanov, H. G. Ritter, Rafal Sikora, D. Garand, L. C. Bland, Y. F. Xu, Sevil Salur, G. J. van Nieuwenhuizen, F. Liu, Miroslav Simko, D. N. Svirida, Y. Fisyak, Y. Panebratsev, D. L. Olvitt, D. Grosnick, Lin Ma, K. Oh, Z. Z. Xu, Nikita Smirnov, A. K. Bhati, D. Keane, R. Stock, L. G. Efimov, R. D. Majka, J. L. Drachenberg, T. K. Nayak, P. Seyboth, J. Schambach, Anju Bhasin, Leszek Adamczyk, K. Kang, T. Niida, A. Lebedev, Guo-Liang Ma, Z. Shi, N. R. Sahoo, Li Yi, A. S. Hirsch, P. Kravtsov, G. Wang, A. M. Schmah, Dmitry Smirnov, Z. J. Sun, F. Videbæk, G. Webb, Sukalyan Chattopadhyay, Z. Feng, M. Lomnitz, E. P. Sichtermann, Rashmi Raniwala, T. Ullrich, C. M. Du, A. Manion, H. S. Xu, Y. Guo, Jongmin Lee, R. L. Ray, R. Ma, T. Ljubicic, Niseem Magdy, H. Caines, Sudhir Raniwala, A. Quintero, E. C. Aschenauer, S. Margetis, and X. Dong
Subjects: Mass number, Physics, Nuclear physics, Light nucleus, Particle physics, 010308 nuclear & particles physics, 0103 physical sciences, Chatterjee, Elliptic flow, 010306 general physics, Relativistic Heavy Ion Collider, 01 natural sciences
Abstract: Author(s): Adamczyk, L; Adkins, JK; Agakishiev, G; Aggarwal, MM; Ahammed, Z; Alekseev, I; Aparin, A; Arkhipkin, D; Aschenauer, EC; Attri, A; Averichev, GS; Bai, X; Bairathi, V; Bellwied, R; Bhasin, A; Bhati, AK; Bhattarai, P; Bielcik, J; Bielcikova, J; Bland, LC; Bordyuzhin, IG; Bouchet, J; Brandenburg, JD; Brandin, AV; Bunzarov, I; Butterworth, J; Caines, H; Calderon De La Barca Sanchez, M; Campbell, JM; Cebra, D; Chakaberia, I; Chaloupka, P; Chang, Z; Chatterjee, A; Chattopadhyay, S; Chen, JH; Chen, X; Cheng, J; Cherney, M; Christie, W; Contin, G; Crawford, HJ; Das, S; De Silva, LC; Debbe, RR; Dedovich, TG; Deng, J; Derevschikov, AA; Di Ruzza, B; Didenko, L; Dilks, C; Dong, X; Drachenberg, JL; Draper, JE; Du, CM; Dunkelberger, LE; Dunlop, JC; Efimov, LG; Engelage, J; Eppley, G; Esha, R; Evdokimov, O; Eyser, O; Fatemi, R; Fazio, S; Federic, P; Fedorisin, J; Feng, Z; Filip, P; Fisyak, Y; Flores, CE; Fulek, L; Gagliardi, CA; Garand, D; Geurts, F; Gibson, A; Girard, M; Greiner, L; Grosnick, D; Gunarathne, DS; Guo, Y; Gupta, S; Gupta, A; Guryn, W; Hamad, AI | Abstract: We present measurements of second-order azimuthal anisotropy (v2) at midrapidity (|y|l1.0) for light nuclei d,t,He3 (for sNN=200, 62.4, 39, 27, 19.6, 11.5, and 7.7 GeV) and antinuclei d; (sNN=200, 62.4, 39, 27, and 19.6 GeV) and Hē3 (sNN=200 GeV) in the STAR (Solenoidal Tracker at RHIC) experiment. The v2 for these light nuclei produced in heavy-ion collisions is compared with those for p and p. We observe mass ordering in nuclei v2(pT) at low transverse momenta (pTl2.0 GeV/c). We also find a centrality dependence of v2 for d and d. The magnitude of v2 for t and He3 agree within statistical errors. Light-nuclei v2 are compared with predictions from a blast-wave model. Atomic mass number (A) scaling of light-nuclei v2(pT) seems to hold for pT/Al1.5GeV/c. Results on light-nuclei v2 from a transport-plus-coalescence model are consistent with the experimental measurements.
Published: 2016

12. Near-side azimuthal and pseudorapidity correlations using neutral strange baryons and mesons ind+Au, Cu + Cu, and Au + Au collisions atsNN=200GeV

Author: N. Xu, P. Filip, D. G. Underwood, Q. Yang, Jorn Henning Putschke, J. Cheng, L. C. De Silva, A. V. Brandin, P. Pile, G. D. Westfall, K. Xin, R. Witt, W. Guryn, D. L. Olvitt, Xiangming Sun, Vipul Bairathi, Roli Esha, Jie Zhao, T. Lin, S. Horvat, M. Simko, James Brandenburg, W. Zha, A. Sarkar, J. Fedorisin, R. Vertesi, Q. H. Xu, S. Mioduszewski, J. Xu, W. J. Llope, J. Porter, L. Yi, F. Liu, H. Z. Huang, S. Vokal, N. K. Pruthi, Lee Stuart Barnby, J. Engelage, G. Odyniec, D. Arkhipkin, Donald M. McDonald, Siwei Luo, A. Hamed, Y. Zoulkarneeva, J. K. Adkins, C. Zhong, E. C. Aschenauer, S. Margetis, G. Nigmatkulov, Alexander Jentsch, Prithwish Tribedy, B. K. Srivastava, P. V. Shanmuganathan, T. J. Humanic, R. Fatemi, L. He, Xiaofeng Luo, Guo-Liang Ma, G. Eppley, Ivan Kisel, K. Yip, B. Huang, K. Krueger, Jaroslav Bielcik, J. S. Wang, Shangfeng Yang, J. M. Landgraf, Zhigang Xiao, X. Dong, Mukesh Sharma, T. Huang, G. Wang, Zongye Zhang, R. R. Debbe, J. Jia, Arka Chatterjee, M. Calderon De La Barca Sanchez, A. I. Hamad, J. H. Chen, L. E. Dunkelberger, A. Attri, H. G. Ritter, M. Strikhanov, M. Vandenbroucke, R. D. Majka, Y. Guo, Michal Sumbera, Rafal Sikora, J. Pluta, A. S. Hirsch, W. Li, Rene Bellwied, D. A. Morozov, J. C. Dunlop, L. Wen, J. Sandweiss, L. Gaillard, R. E. Tribble, R. S. Longacre, Jongmin Lee, R. L. Ray, M.U. Ashraf, Xiang Li, N. G. Minaev, Guannan Xie, Xuan Zhang, I. G. Bordyuzhin, M. Cherney, H. Qiu, Nasim, A. A. Derevschikov, O. V. Rogachevskiy, H. J. Jang, M. K. Mustafa, Y. Li, S. Singha, R. Ma, P. Kravtsov, A. M. Schmah, T. Ljubicic, Sergey Voloshin, J. Schambach, F. Videbæk, Christine Nattrass, Anju Bhasin, L. C. Bland, M. Tokarev, Yang Yang, G. Igo, Lokesh Kumar, J. Novak, G. Webb, B. Pawlik, Gerald W Hoffmann, J. Rusnak, Z. J. Sun, Hua Pei, S. K. Tripathy, Hanna Paulina Zbroszczyk, Abdel Nasser Tawfik, A. F. Kraishan, R. Varma, I. Sakrejda, B. Sharma, Niseem Magdy, K. Jiang, H. Caines, Zubayer Ahammed, Jana Bielcikova, A. Quintero, Sukalyan Chattopadhyay, J. Bouchet, L. Ruan, T. Niida, B. J. Summa, K. Poniatowska, A. Lebedev, A. Gibson, Yanjun Wu, S. K. Gupta, Giacomo Contin, Q. Y. Shou, Yi-Fei Xu, Basanta Kumar Nandi, P. Seyboth, E. P. Sichtermann, K. D. Landry, J. Butterworth, D. N. Svirida, S. W. Wissink, Y. Zhang, R. Pak, J. L. Drachenberg, T. Todoroki, Olga Evdokimov, Nihar Sahoo, Z. Shi, B. S. Page, D. P. Kikola, Z. H. Khan, W. Solyst, P. Sorensen, X. C. Chen, P. Huck, Z. Chang, T. D. S. Stanislaus, V. A. Okorokov, Madan M. Aggarwal, Peter Graham Jones, Fuqiang Wang, Anthony Robert Timmins, Z. Feng, Jay Roberts, B. Stringfellow, J. B. Zhang, D. K. Mishra, D. D. Koetke, J. E. Draper, Leszek Adamczyk, T. Ullrich, H. H. Wieman, X. Bai, Adam Ryszard Kisiel, Nilay Shah, M. Lomnitz, C-Q. Li, H. W. Ke, P. Federic, Bedangadas Mohanty, H. J. Crawford, Z. W. Miller, S. Ramachandran, O. Eyser, B. Di Ruzza, C. M. Du, H. S. Xu, J. M. Campbell, Jian Deng, R. P. Scharenberg, Christina Markert, L. Didenko, I. Chakaberia, A. Manion, D. Kalinkin, M. J. Skoby, M. M. Mondal, D. Smirnov, D. Tlusty, L. Fulek, G. Agakishiev, D. S. Gunarathne, A. M. Poskanzer, Z. Ye, O. Rusnakova, H. S. Matis, M. A.C. Lamont, S. Y. Noh, W. Christie, A. Vossen, M. Posik, T. G. Dedovich, X. Huang, A. Kechechyan, D. Cebra, M. R. Girard, I. K. Yoo, L. K. Kosarzewski, R. Haque, Maksym Zyzak, W. W. Jacobs, C. E. Flores, E. G. Judd, S. Kabana, Pradip Kumar Sahu, H. M. Spinka, Andrey Vasiliev, J. Lauret, Yu-Gang Ma, P. Chaloupka, Z. J. Xu, P. Bhattarai, Isaac Upsal, Y. Fisyak, J. C. Webb, J. Y. Zhang, Lin Ma, N. Yu, Kejun Kang, K. Oh, S. Trentalange, L. V. Nogach, I. G. Alekseev, Sumit R. Das, R. Lednicky, G. Van Nieuwenhuizen, M. A. Lisa, J. C. Mei, L. Kochenda, Janet Elizabeth Seger, T. Tarnowsky, J. H. Thomas, Bernd Surrow, Y. J. Sun, L. P. Zhou, C. Dilks, S. Fazio, B. I. Abelev, M. Stepanov, G. S. Averichev, W. B. Schmidke, C. A. Gagliardi, Haiyan Wang, J. Thäder, C. Yang, Xiaofeng Zhu, K. Kauder, S. B. Nurushev, A. Ogawa, M. Shao, Y. X. Pan, G. Van Buren, S. S. Shi, Marek Bombara, J. L. Romero, J. W. Harris, A. H. Tang, I. Bunzarov, Wei Xie, A. Aparin, Y. Pandit, N. Schmitz, E. Shahaliev, Anik Gupta, Frank Jm Geurts, K. Meehan, S. H. Zhang, A. Sharma, S. McKinzie, Zebo Tang, Leo Clifford Greiner, C. Perkins, O. D. Tsai, L. Song, W. Q. Shen, D. Garand, Sevil Salur, Y. Wang, A. K. Bhati, D. Keane, Nikolai Smirnov, R. Stock, L. G. Efimov, T. K. Nayak, Y. Panebratsev, D. Grosnick, and Samuel Heppelmann
Subjects: Physics, Strange quark, Particle physics, Meson, 010308 nuclear & particles physics, Branching fraction, Hadron, Hyperon, Elementary particle, 01 natural sciences, Charged particle, Nuclear physics, Pseudorapidity, 0103 physical sciences, 010306 general physics
Abstract: Author(s): Abelev, B; Adamczyk, L; Adkins, JK; Agakishiev, G; Aggarwal, MM; Ahammed, Z; Alekseev, I; Aparin, A; Arkhipkin, D; Aschenauer, EC; Ashraf, MU; Attri, A; Averichev, GS; Bai, X; Bairathi, V; Barnby, LS; Bellwied, R; Bhasin, A; Bhati, AK; Bhattarai, P; Bielcik, J; Bielcikova, J; Bland, LC; Bombara, M; Bordyuzhin, IG; Bouchet, J; Brandenburg, JD; Brandin, AV; Bunzarov, I; Butterworth, J; Caines, H; Calderon De La Barca Sanchez, M; Campbell, JM; Cebra, D; Chakaberia, I; Chaloupka, P; Chang, Z; Chatterjee, A; Chattopadhyay, S; Chen, JH; Chen, X; Cheng, J; Cherney, M; Christie, W; Contin, G; Crawford, HJ; Das, S; De Silva, LC; Debbe, RR; Dedovich, TG; Deng, J; Derevschikov, AA; Di Ruzza, B; Didenko, L; Dilks, C; Dong, X; Drachenberg, JL; Draper, JE; Du, CM; Dunkelberger, LE; Dunlop, JC; Efimov, LG; Engelage, J; Eppley, G; Esha, R; Evdokimov, O; Eyser, O; Fatemi, R; Fazio, S; Federic, P; Fedorisin, J; Feng, Z; Filip, P; Fisyak, Y; Flores, CE; Fulek, L; Gagliardi, CA; Gaillard, L; Garand, D; Geurts, F; Gibson, A; Girard, M; Greiner, L; Grosnick, D; Gunarathne, DS | Abstract: We present measurements of the near side of triggered di-hadron correlations using neutral strange baryons (Λ,Λ) and mesons (KS0) at intermediate transverse momentum (3 l pT l6 GeV/c) to look for possible flavor and baryon-meson dependence. This study is performed in d+Au, Cu+Cu, and Au+Au collisions at sNN=200 GeV measured by the STAR experiment at RHIC. The near-side di-hadron correlation contains two structures, a peak which is narrow in azimuth and pseudorapidity consistent with correlations from jet fragmentation, and a correlation in azimuth which is broad in pseudorapidity. The particle composition of the jet-like correlation is determined using identified associated particles. The dependence of the conditional yield of the jet-like correlation on the trigger particle momentum, associated particle momentum, and centrality for correlations with unidentified trigger particles are presented. The neutral strange particle composition in jet-like correlations with unidentified charged particle triggers is not well described by PYTHIA. However, the yield of unidentified particles in jet-like correlations with neutral strange particle triggers is described reasonably well by the same model.
Published: 2016

13. Measurement of the Transverse Single-Spin Asymmetry inp↑+p→W±/Z0at RHIC

Author: R. P. Scharenberg, Christina Markert, E. P. Sichtermann, D. Smirnov, O. Rusnakova, L. K. Kosarzewski, Y. X. Pan, Nasim, W. W. Jacobs, K. D. Landry, Y. Fisyak, J. Lauret, Rashmi Raniwala, Lin Ma, K. Oh, Z. Chang, A. K. Bhati, Xiangming Sun, D. Keane, R. Lednicky, L. Kochenda, T. Tarnowsky, R. S. Longacre, Nikolai Smirnov, R. Stock, L. E. Dunkelberger, L. G. Efimov, Mukesh Sharma, T. Ullrich, Zebo Tang, M. Posik, T. K. Nayak, K. Poniatowska, Junjie Zhang, D. Cebra, H. M. Spinka, C. M. Du, Maksym Zyzak, H. S. Xu, J. Novak, P. Seyboth, A. Banerjee, Leo Clifford Greiner, S. K. Gupta, Giacomo Contin, Leszek Adamczyk, Z. J. Sun, N. K. Pruthi, P. Federic, Z. H. Khan, Bedangadas Mohanty, B. Sharma, D. Tlusty, J. Bouchet, M. K. Mustafa, J. C. Webb, Y. Li, S. Singha, G. Igo, C. Perkins, J. Butterworth, Nihar Sahoo, I. G. Alekseev, G. Eppley, X. C. Chen, P. Huck, J. Porter, W. J. Llope, M. A. Lisa, J. C. Mei, B. Pawlik, Ivan Kisel, Y. F. Xu, Xiaofeng Zhu, J. Pluta, C. Zhong, E. C. Aschenauer, S. Margetis, A. Roy, Anthony Robert Timmins, Adam Ryszard Kisiel, W. Li, Xiaofeng Luo, Y. Panebratsev, D. Grosnick, Alexander Jentsch, X. Dong, A. Ogawa, P. Bhattarai, A. Gibson, G. Wang, J. Engelage, Rene Bellwied, H. J. Crawford, S. Heppelmann, G. Nigmatkulov, A. Attri, R. Esha, Guo-Liang Ma, Basanta Kumar Nandi, Zongye Zhang, J. Rusnak, A. Sarkar, J. Jia, A. F. Kraishan, Q. H. Xu, L. Ruan, J. Xu, Anik Gupta, I. G. Bordyuzhin, M. J. Skoby, B. J. Summa, R. E. Tribble, Jana Bielcikova, Isaac Upsal, L. Fulek, J. K. Adkins, J. M. Landgraf, R. Fatemi, Gerald W Hoffmann, Robert Vertesi, L. He, K. Kauder, Xuan Zhang, Yinina Ma, K. Krueger, Y. Guo, L. C. Bland, Jongmin Lee, J. H. Thomas, G. Odyniec, R. L. Ray, R. Ma, Madan M. Aggarwal, A. S. Hirsch, P. Kravtsov, Y. Zoulkarneeva, A. M. Schmah, Fuqiang Wang, Frank Jm Geurts, K. Yip, J. S. Wang, F. Liu, M. Strikhanov, P. Sorensen, Jie Zhao, T. Lin, S. Horvat, T. Todoroki, Xuedong Bai, L. P. Zhou, Michal Sumbera, R. R. Debbe, Sergey Voloshin, D. K. Mishra, J. B. Zhang, T. Ljubicic, M. Shao, G. Van Buren, L. Wen, L. Song, W. Q. Shen, H. Z. Huang, L. Didenko, I. Chakaberia, Jinhui Chen, S. S. Shi, D. N. Svirida, M. Vandenbroucke, B. Huang, J. Sandweiss, S. H. Zhang, Hanna Paulina Zbroszczyk, R. D. Majka, A. I. Hamad, M. Stepanov, G. S. Averichev, Zhigang Xiao, T. Huang, M. Simko, D. Garand, L. Yi, M. Cherney, Lokesh Kumar, Hua Pei, N. G. Minaev, A. Manion, D. Kalinkin, Y. J. Sun, C. Dilks, D. D. Koetke, James Brandenburg, F. Videbæk, Niseem Magdy, H. Caines, Sudhir Raniwala, A. Quintero, J. M. Campbell, G. Webb, W. Zha, Sevil Salur, Y. Wang, S. Ramachandran, O. Eyser, M. M. Mondal, Xin-Yuan Huang, S. K. Tripathy, K. Jiang, Yanjun Wu, Sukalyan Chattopadhyay, N. Xu, P. Filip, W. Solyst, J. Schambach, S. W. Wissink, Y. Zhang, J. L. Romero, H. G. Ritter, A. Vossen, P. V. Shanmuganathan, W. Guryn, W. Christie, P. Pile, G. D. Westfall, S. Fazio, Rafal Sikora, Jun Deng, M. A.C. Lamont, J. Fedorisin, S. Vokal, S. Y. Noh, M. R. Girard, Andrey Vasiliev, Z. Feng, M. Lomnitz, J. W. Harris, J. E. Draper, M. Calderon De La Barca Sanchez, T. G. Dedovich, C. E. Flores, Haiyan Wang, G. Agakishiev, D. S. Gunarathne, P. Chaloupka, J. Thäder, D. L. Olvitt, D. G. Underwood, X. Xie, Z. J. Xu, P. Yepes, X.G. Li, A. H. Tang, Janet Elizabeth Seger, Q. Yang, Jaroslav Bielcik, T. J. Humanic, A. A. Derevschikov, I. Bunzarov, C. Yang, David Jonathan Hofman, S. Kabana, Anju Bhasin, J. Cheng, Abdel Nasser Tawfik, L. C. De Silva, Shangfeng Yang, T. Niida, R. Varma, S. B. Nurushev, B. S. Page, D. P. Kikola, I. K. Yoo, A. Lebedev, B. Stringfellow, Z. Shi, O. V. Rogachevskiy, S. Trentalange, D. Arkhipkin, H. J. Jang, A. Hamed, I. Sakrejda, R. Haque, D. A. Morozov, E. G. Judd, Vitaly Okorokov, Bernd Surrow, W. B. Schmidke, C. A. Gagliardi, N. Yu, Kejun Kang, L. V. Nogach, Nilay Shah, Sumit R. Das, K. Meehan, Jorn Henning Putschke, A. V. Brandin, G. Van Nieuwenhuizen, K. Xin, Vipul Bairathi, A. M. Poskanzer, Z. Ye, A. Kechechyan, Pradip Kumar Sahu, H. Qiu, M. Tokarev, Yang Yang, T. D. S. Stanislaus, H. H. Wieman, J. C. Dunlop, Zubayer Ahammed, Q. Y. Shou, R. Pak, R. Witt, S. Mioduszewski, Donald M. McDonald, Prithwish Tribedy, B. K. Srivastava, J. L. Drachenberg, Olga Evdokimov, Jay Roberts, H. W. Ke, B. Di Ruzza, Wei Xie, A. Aparin, Y. Pandit, N. Schmitz, E. Shahaliev, O. D. Tsai, and C-Q. Li
Subjects: Quantum chromodynamics, Physics, Particle physics, 010308 nuclear & particles physics, media_common.quotation_subject, General Physics and Astronomy, Perturbative QCD, Parton, Deep inelastic scattering, 01 natural sciences, Asymmetry, Nuclear physics, 0103 physical sciences, Quark–gluon plasma, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider, media_common, Boson
Abstract: We present the measurement of the transverse single-spin asymmetry of weak boson production in transversely polarized proton-proton collisions at sqrt[s]=500 GeV by the STAR experiment at RHIC. The measured observable is sensitive to the Sivers function, one of the transverse-momentum-dependent parton distribution functions, which is predicted to have the opposite sign in proton-proton collisions from that observed in deep inelastic lepton-proton scattering. These data provide the first experimental investigation of the nonuniversality of the Sivers function, fundamental to our understanding of QCD.
Published: 2016

14. Centrality and Transverse Momentum Dependence of Elliptic Flow of Multistrange Hadrons andϕMeson inAu+AuCollisions atsNN=200 GeV

Author: Zongye Zhang, J. K. Adkins, Jorn Henning Putschke, I. G. Bordyuzhin, Mirko Planinic, R. Fatemi, L. He, K. Krueger, Xuan Zhang, D. G. Underwood, H. Qiu, M. Tokarev, Yang Yang, A. V. Brandin, K. Xin, Q. Yang, Zhiming Li, H. Z. Huang, S. Vokal, I. Kisel, R. S. Longacre, Xiangming Sun, Hanna Paulina Zbroszczyk, C-Q. Li, Vipul Bairathi, R. P. Scharenberg, Christina Markert, D. Smirnov, O. Rusnakova, Jaroslav Bielcik, H. S. Matis, L. K. Kosarzewski, J. Cheng, Xiaofeng Zhu, W. W. Jacobs, Xiaofeng Luo, A. Ogawa, J. Lauret, Radoslaw Antoni Kycia, T. D. S. Stanislaus, Y. Fisyak, R. Lednicky, L. Kochenda, T. Tarnowsky, L. C. De Silva, I. K. Yoo, M. Cherney, Lin Ma, Lokesh Kumar, Hua Pei, R. Witt, J. C. Webb, H. H. Wieman, K. Oh, E. C. Aschenauer, I. G. Alekseev, M. A. Lisa, Shangfeng Yang, J. H. Chen, Guo-Liang Ma, S. K. Tripathy, O. V. Rogachevskiy, H. J. Jang, R. Haque, S. Mioduszewski, Z. Chang, S. Margetis, G. Igo, J. Novak, J. W. Harris, X. Dong, D. A. Morozov, I. Sakrejda, Mukesh Sharma, K. Poniatowska, M. Zyzak, Donald M. McDonald, B. Sharma, J. Bouchet, Zebo Tang, G. Wang, W. Guryn, C. E. Flores, E. G. Judd, N. Yu, K. D. Landry, S. K. Gupta, Giacomo Contin, Kejun Kang, L. V. Nogach, Prithwish Tribedy, B. K. Srivastava, A. S. Hirsch, J. Engelage, J. Butterworth, Leo Clifford Greiner, A. M. Poskanzer, Z. Ye, G. Nigmatkulov, J. Fedorisin, Y. Guo, D. Kalinkin, Robert Vertesi, Anju Bhasin, M. Posik, B. J. Summa, Jongmin Lee, R. L. Ray, G. Eppley, Madan M. Aggarwal, Nihar Sahoo, X. C. Chen, Fuqiang Wang, P. Huck, M. R. Girard, M. A.C. Lamont, Z. J. Sun, P. Sorensen, Sumit R. Das, G. Van Nieuwenhuizen, X. Huang, A. Kechechyan, H. M. Spinka, R. Ma, P. Kravtsov, A. M. Schmah, J. M. Landgraf, Roli Esha, D. K. Mishra, X. Li, Jie Zhao, S. Horvat, T. Ljubicic, Anthony Robert Timmins, Adam Ryszard Kisiel, P. Yepes, J. Pluta, S. Y. Noh, J. C. Dunlop, L. Wen, Nilay Shah, A. H. Tang, Pradip Kumar Sahu, S. Fazio, A. Banerjee, J. Porter, M. Strikhanov, C. Perkins, A. Lebedev, A. Manion, H. Caines, Sudhir Raniwala, J. B. Zhang, D. D. Koetke, J. E. Draper, G. Agakishiev, D. S. Gunarathne, Michal Sumbera, S. Ramachandran, O. Eyser, A. Quintero, W. Li, H. J. Crawford, L. Didenko, I. Chakaberia, S. Heppelmann, Zubayer Ahammed, P. Seyboth, P. Bhattarai, Isaac Upsal, Sergey Voloshin, K. Yip, M. K. Mustafa, J. S. Wang, J. Sandweiss, A. Vossen, W. Zha, Nasim, M. M. Mondal, D. Cebra, Q. H. Xu, I. Bunzarov, Rene Bellwied, R. R. Debbe, Zhigang Xiao, Leszek Adamczyk, K. Jiang, Q. Y. Shou, M. Vandenbroucke, S. W. Wissink, R. Stock, Y. Li, S. Singha, Anik Gupta, E. P. Sichtermann, Y. Zhang, Yanjun Wu, D. Tlusty, R. E. Tribble, F. Videbæk, P. V. Shanmuganathan, M. A. Szelezniak, M. Calderon De La Barca Sanchez, Gerald W Hoffmann, A. I. Hamad, N. G. Minaev, G. Webb, A. Sarkar, Nikola Poljak, R. Pak, J. L. Drachenberg, S. Kabana, Sukalyan Chattopadhyay, P. Federic, Vitaly Okorokov, Frank Jm Geurts, G. Odyniec, Rashmi Raniwala, Y. Zoulkarneeva, C. Zhong, Bernd Surrow, W. J. Llope, L. E. Dunkelberger, Olga Evdokimov, Barbara Antonina Trzeciak, A. Roy, J. H. Thomas, N. Magdy, T. Ullrich, A. Peterson, Z. H. Khan, Haiyan Wang, Junjie Zhang, Y. J. Sun, C. Dilks, Bedangadas Mohanty, A. A. Derevschikov, J. Rusnak, Jay Roberts, L. P. Zhou, W. Christie, A. F. Kraishan, C. M. Du, K. Meehan, W. B. Schmidke, H. S. Xu, C. A. Gagliardi, B. Huang, L. Ruan, J. M. Campbell, Z. Feng, M. Lomnitz, Y. P. Viyogi, H. W. Ke, D. L. Olvitt, T. J. Humanic, T. G. Dedovich, B. Di Ruzza, Andrey Vasiliev, M. Stepanov, G. S. Averichev, N. Xu, P. Filip, Abdel Nasser Tawfik, M. Shao, Y. X. Pan, G. Van Buren, P. Pile, G. D. Westfall, K. Kauder, Jun Deng, R. Varma, S. S. Shi, B. S. Page, D. P. Kikola, B. Stringfellow, Y. G. Ma, Janet Elizabeth Seger, C. Yang, David Jonathan Hofman, H. Masui, T. Kollegger, S. B. Nurushev, F. Liu, Miroslav Simko, R. D. Majka, J. Schambach, Wei Xie, A. Aparin, Y. Pandit, N. Schmitz, D. Arkhipkin, A. Hamed, E. Shahaliev, Jana Bielcikova, J. L. Romero, B. Pawlik, A. Gibson, Y. F. Wu, Basanta Kumar Nandi, S. Zhang, P. Chaloupka, Z. J. Xu, S. Trentalange, O. D. Tsai, M. C. Cervantes, L. Yi, L. Song, W. Q. Shen, Xiang Sun, N. Svirida, I. Kulakov, D. Garand, H. G. Ritter, Rafal Sikora, Sevil Salur, Y. Wang, L. C. Bland, Y. F. Xu, A. K. Bhati, D. Keane, Nikolai Smirnov, L. G. Efimov, T. K. Nayak, Y. Panebratsev, M. J. Skoby, D. Grosnick, and L. Fulek
Subjects: Physics, Quark, Strange quark, Particle physics, Meson, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Nuclear Theory, Elliptic flow, General Physics and Astronomy, Constituent quark, 01 natural sciences, Nuclear physics, Strange matter, 0103 physical sciences, High Energy Physics::Experiment, Invariant mass, Vector meson, Nuclear Experiment, 010306 general physics
Abstract: We present high precision measurements of elliptic flow near midrapidity (|y
Published: 2016

15. Centrality dependence of identified particle elliptic flow in relativistic heavy ion collisions atsNN=7.7–62.4GeV

Author: A. Manion, A. Vossen, Bernd Surrow, W. B. Schmidke, C. A. Gagliardi, Jaroslav Bielcik, O. V. Rogachevskiy, H. J. Jang, R. S. Longacre, Junjie Zhang, Bedangadas Mohanty, Zebo Tang, Leo Clifford Greiner, P. V. Shanmuganathan, J. Novak, B. Sharma, J. Bouchet, J. Engelage, C. Perkins, G. Nigmatkulov, J. Butterworth, Sergey Voloshin, Mukesh Sharma, I. K. Yoo, J. M. Landgraf, A. A. Derevschikov, Zhiqing Zhang, Anik Gupta, R. Haque, M. Strikhanov, Zhiming Li, K. Jiang, Q. H. Xu, A. M. Poskanzer, Maksym Zyzak, Yanjun Wu, Z. J. Sun, Frank Jm Geurts, E. G. Judd, Z. Ye, N. Yu, Kejun Kang, L. V. Nogach, E. P. Sichtermann, P. Chaloupka, J. C. Webb, G. Igo, J. Sandweiss, Nasim, K. Poniatowska, X. Huang, A. Kechechyan, Z. J. Xu, Sumit R. Das, S. K. Gupta, P. Seyboth, Giacomo Contin, Michal Sumbera, A. Peterson, Pradip Kumar Sahu, G. Van Nieuwenhuizen, Leszek Adamczyk, Rashmi Raniwala, Nihar Sahoo, D. Tlusty, I. G. Bordyuzhin, Mirko Planinic, X. C. Chen, P. Federic, D. Brandenburg, O. Chisman, P. Huck, B. Pawlik, I. Kulakov, B. Huang, X. Li, Z. H. Khan, S. W. Wissink, Y. Zhang, A. Gibson, N. Xu, Jana Bielcikova, H. Qiu, T. Ullrich, R. Esha, P. Filip, M. K. Mustafa, Xiaofeng Luo, Anthony Robert Timmins, M. Tokarev, Adam Ryszard Kisiel, Robert Vertesi, Anju Bhasin, Basanta Kumar Nandi, J. C. Dunlop, Nikola Poljak, C-Q. Li, R. P. Scharenberg, Christina Markert, P. Pile, D. Smirnov, O. Rusnakova, G. D. Westfall, S. Zhang, P. Sorensen, C. M. Du, Y. Li, S. Singha, Guo-Liang Ma, H. J. Crawford, J. K. Adkins, T. Niida, H. S. Xu, H. S. Matis, J. E. Draper, L. K. Kosarzewski, Y. X. Pan, W. W. Jacobs, K. D. Landry, A. Lebedev, V. A. Okorokov, R. Fatemi, L. He, Zubayer Ahammed, Y. Fisyak, Y. Guo, J. M. Campbell, K. Krueger, T. D. S. Stanislaus, J. Lauret, Jongmin Lee, R. L. Ray, R. Ma, L. Didenko, I. Chakaberia, Lin Ma, K. Oh, H. H. Wieman, R. Lednicky, L. Kochenda, T. Tarnowsky, A. S. Hirsch, S. Trentalange, D. Arkhipkin, T. Ljubicic, T. G. Dedovich, A. Hamed, P. Kravtsov, A. M. Schmah, F. Liu, A. Roy, Niseem Magdy, H. Caines, Sudhir Raniwala, H. Z. Huang, M. Cherney, A. Quintero, J. Rusnak, Lokesh Kumar, A. F. Kraishan, Xiaofeng Zhu, G. Odyniec, R. D. Majka, Hua Pei, S. K. Tripathy, Y. Zoulkarneeva, C. Zhong, A. Ogawa, J. Schambach, F. Videbæk, A. I. Hamad, W. Christie, L. Ruan, G. Wang, G. Webb, Q. Y. Shou, Sukalyan Chattopadhyay, E. C. Aschenauer, Andrey Vasiliev, S. Margetis, K. Yip, J. S. Wang, X. Dong, M. A.C. Lamont, Z. Feng, M. Lomnitz, Janet Elizabeth Seger, R. R. Debbe, M. Vandenbroucke, S. Y. Noh, L. C. Bland, Jian Deng, D. L. Olvitt, G. Agakishiev, D. S. Gunarathne, R. Pak, Y. F. Xu, S. Kabana, Radoslaw Antoni Kycia, Xiangming Sun, J. W. Harris, S. Heppelmann, I. G. Alekseev, J. L. Drachenberg, M. A. Lisa, Olga Evdokimov, Barbara Antonina Trzeciak, A. K. Bhati, D. Keane, Zhigang Xiao, Nikolai Smirnov, R. Stock, X. Bai, K. Meehan, Jorn Henning Putschke, L. E. Dunkelberger, L. G. Efimov, P. Yepes, N. G. Minaev, A. V. Brandin, K. Xin, A. H. Tang, Z. Chang, N. K. Pruthi, Yu-Gang Ma, T. K. Nayak, G. Eppley, Vipul Bairathi, I. Bunzarov, J. Pluta, Xuan Zhang, W. Li, M. J. Skoby, Rene Bellwied, Jay Roberts, M. Posik, Y. Panebratsev, D. Grosnick, R. E. Tribble, L. Fulek, Gerald W Hoffmann, K. Kauder, H. M. Spinka, L. Yi, Hanna Paulina Zbroszczyk, N. Svirida, A. Banerjee, J. Porter, Y. Yang, H. W. Ke, H. G. Ritter, B. Di Ruzza, Ivan Kisel, W. Guryn, Rafal Sikora, Nilay Shah, J. Fedorisin, M. Calderon De La Barca Sanchez, A. Sarkar, Jie Zhao, S. Horvat, J. L. Romero, J. H. Thomas, M. Simko, W. J. Llope, M. C. Cervantes, L. Wen, W. Zha, L. Song, W. Q. Shen, L. P. Zhou, D. Cebra, Xiang Sun, R. Witt, D. G. Underwood, Q. Yang, D. Garand, S. Mioduszewski, M. Stepanov, G. S. Averichev, Sevil Salur, Y. Wang, J. Cheng, L. C. De Silva, Donald M. McDonald, Prithwish Tribedy, B. K. Srivastava, T. J. Humanic, Abdel Nasser Tawfik, R. Varma, B. S. Page, D. P. Kikola, B. Stringfellow, M. R. Girard, C. E. Flores, P. Bhattarai, Isaac Upsal, M. A. Szelezniak, Y. J. Sun, C. Dilks, Y. P. Viyogi, Thorsten Sven Kollegger, D. Kalinkin, B. J. Summa, J. B. Zhang, D. D. Koetke, S. Ramachandran, O. Eyser, M. M. Mondal, S. Vokal, Wei Xie, A. Aparin, Shangfeng Yang, J. H. Chen, Y. Pandit, D. A. Morozov, N. Schmitz, E. Shahaliev, Y. F. Wu, O. D. Tsai, S. Fazio, Haiyan Wang, J. Thäder, M. Shao, G. Van Buren, S. S. Shi, C. Yang, David Jonathan Hofman, H. Masui, S. B. Nurushev, Madan M. Aggarwal, Fuqiang Wang, and D. K. Mishra
Subjects: Quark, Physics, Antiparticle, Particle physics, 010308 nuclear & particles physics, Elliptic flow, 01 natural sciences, Nuclear physics, Flow (mathematics), 0103 physical sciences, Physics::Accelerator Physics, Particle, Impact parameter, Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider, Scaling
Abstract: Elliptic flow (v2) values for identified particles at midrapidity in Au + Au collisions measured by the STAR experiment in the Beam Energy Scan at the
Published: 2016

16. Observation of Transverse Spin-Dependent Azimuthal Correlations of Charged Pion Pairs inp↑+pats=200 GeV

Author: Nasim, Mukesh Sharma, G. Wang, Zebo Tang, J. W. Harris, E. P. Sichtermann, Leo Clifford Greiner, Rashmi Raniwala, Z. J. Sun, C. Perkins, G. Eppley, Jaroslav Bielcik, J. Pluta, P. V. Shanmuganathan, W. Li, Z. Chang, T. Ullrich, Rene Bellwied, Thorsten Sven Kollegger, D. Kalinkin, L. E. Dunkelberger, P. Yepes, A. H. Tang, R. E. Tribble, Gerald W Hoffmann, F. Videbæk, C. M. Du, H. S. Xu, Xiaofeng Zhu, W. Christie, Xiangming Sun, N. Magdy, N. K. Pruthi, M. Posik, S. Heppelmann, B. J. Summa, G. Webb, A. A. Derevschikov, O. V. Rogachevskiy, H. J. Jang, I. Bunzarov, Andrey Vasiliev, Z. H. Khan, Junjie Zhang, Bedangadas Mohanty, A. Roy, Sukalyan Chattopadhyay, Y. Wang, Y. Fisyak, Lin Ma, H. M. Spinka, A. Banerjee, Y. Guo, Anik Gupta, M. K. Mustafa, K. Oh, A. Ogawa, J. Rusnak, Jongmin Lee, R. L. Ray, J. B. Zhang, D. D. Koetke, Y. Li, Xuan Zhang, H. Qiu, M. Tokarev, Zhiming Li, Frank Jm Geurts, J. E. Draper, S. Ramachandran, Janet Elizabeth Seger, A. F. Kraishan, L. Ruan, Radoslaw Antoni Kycia, J. H. Thomas, T. Ljubicic, Z. Feng, M. Lomnitz, Anju Bhasin, Maksym Zyzak, H. Caines, Sudhir Raniwala, O. Eyser, M. M. Mondal, P. Seyboth, L. P. Zhou, I. G. Alekseev, Madan M. Aggarwal, Fuqiang Wang, Hanna Paulina Zbroszczyk, Zongye Zhang, A. Lebedev, D. Tlusty, I. G. Bordyuzhin, Mirko Planinic, K. Poniatowska, M. A. Lisa, K. Meehan, Jorn Henning Putschke, J. C. Webb, A. V. Brandin, J. Engelage, A. Quintero, J. Alford, Leszek Adamczyk, G. Nigmatkulov, Xiaofeng Luo, Guo-Liang Ma, X. Li, T. D. S. Stanislaus, A. Manion, P. Federic, S. K. Gupta, M. Stepanov, G. S. Averichev, Giacomo Contin, R. Witt, K. Kauder, H. Z. Huang, Michal Sumbera, W. Guryn, S. Vokal, I. Kulakov, J. Porter, K. Xin, A. Vossen, H. H. Wieman, J. M. Landgraf, Ivan Kisel, R. Vertesi, A. S. Hirsch, P. Kravtsov, A. M. Schmah, Nihar Sahoo, E. C. Aschenauer, S. Mioduszewski, M. Strikhanov, F. Liu, C-Q. Li, X. C. Chen, J. M. Campbell, J. L. Romero, Jian Deng, P. Huck, Shangfeng Yang, J. H. Chen, G. Agakishiev, D. S. Gunarathne, R. P. Scharenberg, Christina Markert, R. Ma, Vitaly Okorokov, S. W. Wissink, S. Margetis, Y. Zhang, D. Smirnov, O. Rusnakova, H. S. Matis, X. Dong, D. L. Olvitt, Bernd Surrow, J. Sandweiss, W. J. Llope, Donald M. McDonald, D. Cebra, L. K. Kosarzewski, J. Fedorisin, Prithwish Tribedy, B. K. Srivastava, Nikola Poljak, B. Pawlik, A. M. Poskanzer, Z. Ye, W. W. Jacobs, M. Shao, Y. X. Pan, G. Van Buren, Anthony Robert Timmins, Adam Ryszard Kisiel, K. Yip, J. S. Wang, R. D. Majka, J. Schambach, R. R. Debbe, M. Calderon De La Barca Sanchez, A. I. Hamad, T. G. Dedovich, D. A. Morozov, S. Kabana, J. Lauret, W. B. Schmidke, X. Huang, H. J. Crawford, M. Vandenbroucke, C. A. Gagliardi, J. K. Adkins, Roli Esha, R. Lednicky, L. Kochenda, T. Tarnowsky, Jana Bielcikova, Zhigang Xiao, P. Sorensen, A. Kechechyan, D. Arkhipkin, A. Hamed, R. Fatemi, Pradip Kumar Sahu, L. He, S. S. Shi, Jie Zhao, S. Horvat, K. Krueger, N. G. Minaev, J. L. Drachenberg, Olga Evdokimov, Barbara Antonina Trzeciak, I. Sakrejda, M. A.C. Lamont, S. Y. Noh, M. Simko, N. Yu, Kejun Kang, L. V. Nogach, I. K. Yoo, L. Yi, W. Zha, Sumit R. Das, G. Van Nieuwenhuizen, Kun Jiang, Jay Roberts, M. Cherney, Nilay Shah, A. Sarkar, Lokesh Kumar, L. Didenko, I. Chakaberia, Hua Pei, S. K. Tripathy, D. G. Underwood, R. Haque, Q. Yang, H. W. Ke, J. Cheng, N. Xu, B. Di Ruzza, Yang Yang, L. C. De Silva, J. C. Dunlop, L. Wen, Zubayer Ahammed, C. E. Flores, E. G. Judd, Q. Y. Shou, R. Pak, M. R. Girard, P. Filip, Sergey Voloshin, P. Pile, G. D. Westfall, Wei Xie, A. Aparin, Y. G. Ma, Y. Pandit, N. Schmitz, E. Shahaliev, C. Yang, David Jonathan Hofman, Y. F. Wu, H. Masui, T. J. Humanic, A. Gibson, S. B. Nurushev, S. Fazio, Basanta Kumar Nandi, Abdel Nasser Tawfik, S. Zhang, Haiyan Wang, R. Varma, B. S. Page, D. P. Kikola, T. P. Burton, B. Stringfellow, P. Bhattarai, Isaac Upsal, P. Chaloupka, M. A. Szelezniak, Z. J. Xu, S. Trentalange, N. Svirida, H. G. Ritter, Rafal Sikora, Y. J. Sun, C. Dilks, L. C. Bland, Y. F. Xu, Y. P. Viyogi, M. J. Skoby, Y. Panebratsev, D. Grosnick, L. Fulek, A. K. Bhati, D. Keane, Nikolai Smirnov, R. Stock, L. G. Efimov, T. K. Nayak, O. D. Tsai, M. C. Cervantes, L. Song, W. Q. Shen, Xiang Sun, D. Garand, Sevil Salur, Q. H. Xu, A. Peterson, B. Huang, R. S. Longacre, G. Igo, J. Novak, B. Sharma, J. Bouchet, K. D. Landry, J. Butterworth, G. Odyniec, Y. Zoulkarneeva, and C. Zhong
Subjects: Physics, Quark, Quantum chromodynamics, Particle physics, Meson, Nuclear Theory, Hadron, General Physics and Astronomy, Nuclear physics, Pion, Pair production, High Energy Physics::Experiment, Invariant mass, Nuclear Experiment, Nucleon
Abstract: We report the observation of transverse polarization-dependent azimuthal correlations in charged pion pair production with the STAR experiment in p↑+p collisions at RHIC. These correlations directly probe quark transversity distributions. We measure signals in excess of 5 standard deviations at high transverse momenta, at high pseudorapidities η>0.5, and for pair masses around the mass of the ρ meson. This is the first direct transversity measurement in p+p collisions.
Published: 2015

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

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

18. Azimuthal Anisotropy inU+UandAu+AuCollisions at RHIC

Author: N. Xu, P. Filip, O. D. Tsai, H. Qiu, M. Tokarev, Yang Yang, M. K. Mustafa, M. C. Cervantes, L. Song, P. Pile, G. D. Westfall, K. Poniatowska, D. Kalinkin, Anju Bhasin, Y. Li, Jun Deng, F. Videbæk, W. Q. Shen, Xiang Sun, T. D. S. Stanislaus, S. K. Gupta, Giacomo Contin, A. Roy, J. Rusnak, J. L. Zhang, M. Calderon De La Barca Sanchez, A. I. Hamad, A. F. Kraishan, Wei Xie, B. J. Summa, G. Webb, L. Ruan, J. C. Dunlop, L. Wen, H. H. Wieman, A. Aparin, R. P. Scharenberg, Christina Markert, R. Ma, I. Kulakov, D. Smirnov, O. Rusnakova, H. S. Matis, D. Garand, Xiang Li, A. Lebedev, Nihar Sahoo, G. Eppley, Zhigang Xiao, Zubayer Ahammed, Y. Pandit, X. C. Chen, Zebo Tang, Zhiming Li, Sevil Salur, Y. Wang, P. Huck, N. G. Minaev, J. B. Zhang, D. D. Koetke, J. E. Draper, P. Federic, L. K. Kosarzewski, W. W. Jacobs, Leo Clifford Greiner, Sergey Voloshin, J. Lauret, N. Schmitz, E. Shahaliev, S. Ramachandran, O. Eyser, R. Lednicky, J. Pluta, J. Alford, J. C. Webb, Y. Guo, Z. Feng, A. M. Poskanzer, Z. Ye, T. Tarnowsky, W. Guryn, Jongmin Lee, Q. Y. Shou, T. P. Burton, M. M. Mondal, M. Lomnitz, Anthony Robert Timmins, Adam Ryszard Kisiel, W. Li, Y. F. Wu, R. L. Ray, Thomas Humanic, A. Kechechyan, A. K. Bhati, C. Perkins, Zongye Zhang, Abdel Nasser Tawfik, D. Keane, I. G. Bordyuzhin, Mirko Planinic, W. J. Llope, Xiaofeng Luo, Z. Chang, P. Seyboth, Pradip Kumar Sahu, Nikolai Smirnov, J. Fedorisin, Cheng Li, B. Pawlik, R. Pak, Guo-Liang Ma, K. Yip, J. S. Wang, H. J. Crawford, L. G. Efimov, H. Z. Huang, R. Varma, S. Vokal, T. K. Nayak, J. Engelage, Roli Esha, T. Ljubicic, J. K. Adkins, B. S. Page, Rene Bellwied, Jie Zhao, S. Horvat, R. Witt, T. Kollegger, D. P. Kikola, A. S. Hirsch, Anik Gupta, Robert Vertesi, G. Nigmatkulov, R. Fatemi, Y. Panebratsev, L. He, Niseem Magdy, R. R. Debbe, H. Caines, Sudhir Raniwala, Leszek Adamczyk, B. Stringfellow, P. Sorensen, S. Mioduszewski, Jaroslav Bielcik, P. Kravtsov, A. M. Schmah, Jana Bielcikova, P. Bhattarai, Isaac Upsal, F. Liu, Miroslav Simko, Shangfeng Yang, J. H. Chen, K. Krueger, A. Quintero, J. L. Romero, W. Zha, G. Agakishiev, D. S. Gunarathne, Donald M. McDonald, D. Grosnick, M. Vandenbroucke, M. Posik, R. E. Tribble, Frank Jm Geurts, P. Chaloupka, D. A. Morozov, Prithwish Tribedy, Xiaofeng Zhu, M. A. Szelezniak, L. Didenko, I. Chakaberia, Z. J. Xu, D. Cebra, B. K. Srivastava, D. G. Underwood, I. Kisel, H. M. Spinka, A. Ogawa, Q. Yang, J. Y. Zhang, D. L. Olvitt, S. Trentalange, Gerald W Hoffmann, J. M. Landgraf, P. V. Shanmuganathan, Y. J. Sun, Subhasis Chattopadhyay, K. Meehan, C. Dilks, S. Kabana, K. Kauder, Lokesh Kumar, A. Banerjee, L. E. Dunkelberger, J. Cheng, R. D. Majka, G. Odyniec, M. Cherney, N. Yu, Y. Zoulkarneeva, L. C. De Silva, E. C. Aschenauer, C. Zhong, J. L. Drachenberg, O. V. Rogachevskiy, Olga Evdokimov, Barbara Antonina Trzeciak, Kejun Kang, L. V. Nogach, Y. P. Viyogi, Hua Pei, S. K. Tripathy, J. Porter, A. Gibson, J. Schambach, S. Margetis, H. J. Jang, Xiangming Sun, M. Strikhanov, A. A. Derevschikov, Basanta Kumar Nandi, Y. Fisyak, Sumit R. Das, S. Zhang, X. Dong, Lin Ma, K. Oh, I. Sakrejda, W. Christie, G. Van Nieuwenhuizen, M. Zyzak, V. A. Okorokov, Kun Jiang, J. Sandweiss, M. A.C. Lamont, S. Y. Noh, Nasim, M. R. Girard, Mukesh Sharma, R. Stock, G. Wang, E. P. Sichtermann, Jay Roberts, N. K. Pruthi, D. Tlusty, D. Arkhipkin, A. Hamed, Rashmi Raniwala, Xin-Yuan Huang, Z. J. Sun, L. Yi, A. Sarkar, Andrey Vasiliev, J. M. Campbell, Nilay Shah, H. W. Ke, Jorn Henning Putschke, T. Ullrich, S. Heppelmann, Radoslaw Antoni Kycia, A. V. Brandin, K. Xin, Z. H. Khan, I. G. Alekseev, J. H. Thomas, C. M. Du, B. Di Ruzza, H. S. Xu, M. A. Lisa, Janet Elizabeth Seger, T. G. Dedovich, L. P. Zhou, Yu-Gang Ma, Madan M. Aggarwal, Fuqiang Wang, Xuan Zhang, J. W. Harris, A. Manion, Hanna Paulina Zbroszczyk, A. Vossen, M. Stepanov, G. S. Averichev, F. Zhao, P. Yepes, A. H. Tang, I. Bunzarov, Bernd Surrow, W. B. Schmidke, C. A. Gagliardi, Michal Sumbera, S. W. Wissink, Y. Zhang, Nikola Poljak, Q. H. Xu, Bedangadas Mohanty, A. Peterson, I. K. Yoo, R. Haque, B. Huang, C. E. Flores, E. G. Judd, R. S. Longacre, G. Igo, J. Novak, B. Sharma, J. Bouchet, K. D. Landry, J. Butterworth, H. G. Ritter, Rafal Sikora, L. C. Bland, Y. F. Xu, D. N. Svirida, M. J. Skoby, L. Fulek, C. Yang, David Jonathan Hofman, H. Masui, S. B. Nurushev, S. Fazio, Haiyan Wang, M. Shao, Y. X. Pan, G. Van Buren, S. S. Shi, and L. Kotchenda
Subjects: Quark, Quantum chromodynamics, Physics, Particle physics, Nuclear Theory, Hadron, Elliptic flow, General Physics and Astronomy, Gluon, Nuclear physics, Quark–gluon plasma, Multiplicity (chemistry), Nuclear Experiment, Relativistic Heavy Ion Collider
Abstract: Collisions between prolate uranium nuclei are used to study how particle production and azimuthal anisotropies depend on initial geometry in heavy-ion collisions. We report the two- and four-particle cumulants, v(2){2} and v(2){4}, for charged hadrons from U + U collisions at root s(NN) = 193 GeV and Au + Au collisions at root s(NN) = 200 GeV. Nearly fully overlapping collisions are selected based on the energy deposited by spectators in zero degree calorimeters (ZDCs). Within this sample, the observed dependence of v(2){2} on multiplicity demonstrates that ZDC information combined with multiplicity can preferentially select different overlap configurations in U + U collisions. We also show that v(2) vs multiplicity can be better described by models, such as gluon saturation or quark participant models, that eliminate the dependence of the multiplicity on the number of binary nucleon-nucleon collisions.
Published: 2015

19. Precision Measurement of the Longitudinal Double-Spin Asymmetry for Inclusive Jet Production in Polarized Proton Collisions ats=200 GeV

Author: Z. P. Zhang, A. S. Hirsch, P. Kravtsov, A. M. Schmah, B. Haag, J. L. Drachenberg, Olga Evdokimov, Barbara Antonina Trzeciak, A. Roy, F. Videbæk, G. Webb, Xiangyuan Cui, W. Christie, P. R. Pujahari, Sukalyan Chattopadhyay, I. Sakrejda, J. K. Adkins, E. P. Sichtermann, M. A.C. Lamont, M. Lomnitz, D. L. Olvitt, Zebo Tang, Janusz Chwastowski, X. Li, Andrey Vasiliev, Q. H. Xu, L-X. Han, S. Y. Noh, R. Fatemi, Jay Roberts, J. Rusnak, Rashmi Raniwala, Nasim, J. Xu, Leo Clifford Greiner, K. Krueger, J. A. Vanfossen, T. Ullrich, Janet Elizabeth Seger, J. H. Thomas, S. Dhamija, L. Yi, Nilay Shah, L. Kotchenda, C. Perkins, A. F. Kraishan, L. Ruan, R. Vertesi, A. K. Bhati, D. Keane, Nikolai Smirnov, R. Stock, J. M. Campbell, J. Turnau, Xiaofeng Zhu, L. C. Bland, A. M. Poskanzer, Z. Ye, M. Cherney, L. G. Efimov, C. M. Du, F. Liu, Mariusz Przybycien, K. S. Engle, R. N. Singaraju, X. Huang, C. K. Riley, A. Ogawa, D. G. Underwood, Hua Pei, H. S. Xu, Jian Deng, T. K. Nayak, H. F. Chen, K. Yip, J. S. Wang, B. Pawlik, S. G. Brovko, R. R. Debbe, Y. Guo, T. G. Dedovich, A. Kechechyan, J. Cheng, I. K. Yoo, Pradip Kumar Sahu, Anik Gupta, F. Ding, Jongmin Lee, R. L. Ray, H. W. Ke, B. Di Ruzza, D. M.M.D. Madagodagettige Don, D. R. Gangadharan, K. Poniatowska, R. D. Majka, M. Vandenbroucke, A. Gibson, T. J. M. Symons, Y. Zawisza, Y. Panebratsev, D. N. Svirida, S. K. Gupta, Giacomo Contin, W. Borowski, R. Haque, D. Grosnick, G. Agakishiev, D. S. Gunarathne, J. Schambach, Frank Jm Geurts, C-Q. Li, Yang Yang, L. C. De Silva, Z. H. Khan, Y. Fisyak, Basanta Kumar Nandi, Nihar Sahoo, G. Eppley, Anju Bhasin, T. Ljubicic, H. Qiu, R. P. Scharenberg, Christina Markert, D. Smirnov, M. Tokarev, O. Rusnakova, P. Huck, H. S. Matis, K. Oh, M. K. Mustafa, J. C. Dunlop, S. Zhang, Yu-Gang Ma, D. Cebra, H. Caines, Sudhir Raniwala, Wenbin Yan, Anthony Robert Timmins, Adam Ryszard Kisiel, G. S. Averichev, J. Alford, L. K. Kosarzewski, A. Lebedev, J. Engelage, A. Quintero, Y. Li, H. J. Crawford, C. E. Flores, E. G. Judd, R. S. Longacre, J. Pluta, W. Guryn, G. Nigmatkulov, V. A. Okorokov, Zhigang Xiao, T. D. S. Stanislaus, Zubayer Ahammed, W. W. Jacobs, J. Lauret, T. P. Burton, C. D. Anson, Xuan Zhang, M. J. LeVine, D. P. Mahapatra, H. H. Wieman, W. Li, Madan M. Aggarwal, H. Bichsel, G. Wang, Jorn Henning Putschke, Fuqiang Wang, J. M. Landgraf, G. Odyniec, R. Lednicky, T. Tarnowsky, G. Igo, P. Djawotho, J. Fedorisin, N. G. Minaev, Y. Zoulkarneeva, C. Zhong, Z. Chang, Li-Yi Chen, Bedangadas Mohanty, B. Huang, J. Novak, I. Koralt, A. V. Brandin, B. Sharma, X. L. Wang, E. C. Aschenauer, D. Solanki, M. Strikhanov, N. Xu, P. Filip, Z. J. Sun, Hanna Paulina Zbroszczyk, J. Bouchet, K. D. Landry, K. Kauder, A. Vossen, J. F. Ross, S. Margetis, Q. Y. Shou, J. Butterworth, Rene Bellwied, K. Xin, N. Yu, Kejun Kang, L. V. Nogach, X. Dong, Y. H. Zhu, Jie Zhao, O. D. Tsai, J. Konzer, P. Pile, D. R. Beavis, G. D. Westfall, P. Seyboth, S. Horvat, D. Tlusty, I. G. Bordyuzhin, Mirko Planinic, S. K. Pal, Justin Stevens, R. E. Tribble, Sumit R. Das, Y. Xu, M. C. Cervantes, P. Chaloupka, Leszek Adamczyk, G. Van Nieuwenhuizen, R. Derradi de Souza, M. J. Skoby, Bernd Surrow, M. Wada, T. Pawlak, Z. J. Xu, H. M. Spinka, J. L. Zhang, W. Q. Shen, J. Sandweiss, R. Witt, F. Zhao, A. Kesich, W. Zha, Gerald W Hoffmann, I. Kulakov, A. Banerjee, Xiang Sun, A. B. Cudd, A. Sarkar, W. B. Schmidke, S. Mioduszewski, J. Porter, S. Trentalange, C. A. Gagliardi, R. Cendejas, Ivan Kisel, Donald M. McDonald, M. Pachr, Stephen V. Gliske, Prithwish Tribedy, B. K. Srivastava, D. Garand, A. Chikanian, Lokesh Kumar, W. J. Llope, Jaroslav Bielcik, Michal Sumbera, Sevil Salur, Y. Wang, Xiangming Sun, H. G. Ritter, O. V. Rogachevskiy, H. J. Jang, S. Bültmann, A. Ohlson, S. W. Wissink, J. W. Harris, Radoslaw Antoni Kycia, Y. Zhang, E. Sangaline, D. Arkhipkin, A. Hamed, Nikola Poljak, I. G. Alekseev, P. Yepes, A. Davila Leyva, A. H. Tang, M. A. Lisa, N. K. Pruthi, I. Bunzarov, M. Calderon De La Barca Sanchez, Y. F. Wu, Wei Xie, J. G. Cramer, A. Aparin, G. M.S. Vasconcelos, Y. Pandit, N. Schmitz, E. Shahaliev, M. R. Girard, J. L. Romero, E. Finch, E. W. Oldag, T. J. Humanic, H. Z. Huang, S. Vokal, R. Varma, B. S. Page, D. P. Kikola, B. Stringfellow, T. S. McShane, J. H. Chen, S. S. Shi, P. Bhattarai, M. A. Szelezniak, D. A. Morozov, Thorsten Sven Kollegger, Y. J. Sun, D. Kalinkin, C. Dilks, S. Heppelmann, S. Kabana, Y. P. Viyogi, L. Eun, J. B. Zhang, D. D. Koetke, J. E. Draper, S. Ramachandran, O. Eyser, M. M. Mondal, M. Shao, Y. X. Pan, G. Van Buren, J. M. Nelson, W. Peryt, C. Yang, David Jonathan Hofman, M. J.M. Codrington, H. Masui, J. Takahashi, S. B. Nurushev, S. Fazio, Haiyan Wang, P. V. Shanmuganathan, L. E. Dunkelberger, A. A. Derevschikov, Jana Bielcikova, P. Sorensen, L. Didenko, Zhiming Li, Maksym Zyzak, J. C. Webb, Xiaofeng Luo, and Guo-Liang Ma
Subjects: Physics, Particle physics, Scattering, media_common.quotation_subject, General Physics and Astronomy, Parton, Polarization (waves), Asymmetry, Gluon, Nuclear physics, Distribution function, High Energy Physics::Experiment, Nuclear Experiment, Relativistic Heavy Ion Collider, media_common
Abstract: We report a new measurement of the midrapidity inclusive jet longitudinal double-spin asymmetry, A_{LL}, in polarized pp collisions at center-of-mass energy sqrt[s]=200 GeV. The STAR data place stringent constraints on polarized parton distribution functions extracted at next-to-leading order from global analyses of inclusive deep-inelastic scattering (DIS), semi-inclusive DIS, and RHIC pp data. The measured asymmetries provide evidence at the 3σ level for positive gluon polarization in the Bjorken-x region x>0.05.
Published: 2015

20. Measurements of dielectron production in Au + Au collisions atsNN=200GeV from the STAR experiment

Author: Zhigang Xiao, S. Fazio, Jorn Henning Putschke, A. V. Brandin, Bernd Surrow, J. C. Dunlop, L. Wen, Nasim, K. Xin, Z. H. Khan, N. G. Minaev, J. W. Harris, J. Engelage, Xiangming Sun, P. Bhattarai, Isaac Upsal, Zubayer Ahammed, W. B. Schmidke, J. Porter, T. P. Burton, G. Nigmatkulov, C. A. Gagliardi, N. Yu, J. M. Landgraf, M. Strikhanov, J. Sandweiss, Q. H. Xu, Kejun Kang, L. V. Nogach, Haiyan Wang, Michal Sumbera, J. K. Adkins, Ivan Kisel, Jaroslav Bielcik, Zhiming Li, Sumit R. Das, M. A. Szelezniak, R. Fatemi, L. He, G. Van Nieuwenhuizen, Zongye Zhang, J. L. Romero, Anik Gupta, P. Yepes, D. Tlusty, I. G. Bordyuzhin, Mirko Planinic, K. Krueger, D. L. Olvitt, Maksym Zyzak, N. Xu, Frank Jm Geurts, P. Seyboth, O. V. Rogachevskiy, H. J. Jang, P. Chaloupka, P. Filip, P. Pile, G. D. Westfall, S. W. Wissink, A. H. Tang, Q. Y. Shou, Yi-Fei Xu, J. C. Webb, Y. J. Sun, C. Dilks, A. M. Poskanzer, Z. Ye, I. Bunzarov, N. K. Pruthi, M. J. Skoby, L. Fulek, Madan M. Aggarwal, Fuqiang Wang, X. Li, Z. J. Xu, Leszek Adamczyk, S. Trentalange, M. K. Mustafa, Nikola Poljak, K. Yip, A. Roy, J. S. Wang, K. Meehan, R. Pak, J. L. Drachenberg, Olga Evdokimov, Barbara Antonina Trzeciak, M. Cherney, X. Huang, A. Kechechyan, P. Federic, A. Manion, Pradip Kumar Sahu, Y. P. Viyogi, T. J. Humanic, L. C. Bland, R. R. Debbe, C-Q. Li, Y. F. Wu, S. H. Zhang, A. Vossen, Lokesh Kumar, G. Eppley, I. Kulakov, Y. Li, M. Calderon De La Barca Sanchez, A. I. Hamad, A. Peterson, M. Vandenbroucke, Hua Pei, S. K. Tripathy, R. P. Scharenberg, Christina Markert, Z. Chang, J. Rusnak, Abdel Nasser Tawfik, A. F. Kraishan, J. Pluta, D. Smirnov, B. Pawlik, H. Qiu, O. Rusnakova, L. Ruan, Jay Roberts, J. M. Campbell, I. K. Yoo, H. S. Matis, M. Tokarev, W. Li, A. Gibson, K. Poniatowska, Zebo Tang, Jana Bielcikova, B. Huang, S. K. Gupta, R. Varma, Giacomo Contin, R. Haque, Radoslaw Antoni Kycia, Leo Clifford Greiner, B. S. Page, Rene Bellwied, Basanta Kumar Nandi, T. D. S. Stanislaus, R. S. Longacre, M. Posik, H. W. Ke, T. G. Dedovich, I. G. Alekseev, L. K. Kosarzewski, D. P. Kikola, R. E. Tribble, C. E. Flores, Nihar Sahoo, Y. Wang, H. H. Wieman, Y. Fisyak, H. M. Spinka, B. Stringfellow, Sergey Voloshin, P. Sorensen, E. G. Judd, X. C. Chen, W. W. Jacobs, Wei Xie, V. A. Okorokov, Gerald W Hoffmann, P. Huck, Lin Ma, M. A. Lisa, C. Perkins, K. Oh, B. Di Ruzza, I. Sakrejda, J. Lauret, A. Banerjee, A. Aparin, Junjie Zhang, O. D. Tsai, Bedangadas Mohanty, Xiaofeng Luo, K. Jiang, G. Igo, G. Odyniec, Y. Pandit, Anthony Robert Timmins, J. Novak, Adam Ryszard Kisiel, Y. Zoulkarneeva, N. Svirida, Mukesh Sharma, G. Wang, B. Sharma, J. Bouchet, N. Schmitz, H. J. Crawford, L. Didenko, I. Chakaberia, R. Lednicky, L. Kochenda, T. Tarnowsky, Anju Bhasin, Guo-Liang Ma, L. Yi, E. Shahaliev, J. H. Thomas, K. D. Landry, J. Butterworth, D. Arkhipkin, A. Hamed, H. G. Ritter, R. Witt, M. C. Cervantes, Z. J. Sun, A. Lebedev, Nilay Shah, Rafal Sikora, P. V. Shanmuganathan, L. P. Zhou, M. R. Girard, S. Mioduszewski, L. Song, L. E. Dunkelberger, Donald M. McDonald, Prithwish Tribedy, Jian Deng, A. S. Hirsch, B. K. Srivastava, W. Q. Shen, R. Vertesi, G. Agakishiev, D. S. Gunarathne, A. A. Derevschikov, P. Kravtsov, A. M. Schmah, D. Cebra, F. Liu, Xiaofeng Zhu, S. Kabana, Xiang Sun, A. Ogawa, R. D. Majka, J. Schambach, F. Videbæk, G. Webb, W. Christie, Sukalyan Chattopadhyay, Andrey Vasiliev, Janet Elizabeth Seger, Yifei Zhang, Z. Feng, M. Lomnitz, M. Stepanov, G. S. Averichev, K. Kauder, D. Garand, Sevil Salur, Y. Panebratsev, D. Grosnick, A. K. Bhati, D. Keane, Nikolai Smirnov, R. Stock, L. G. Efimov, T. K. Nayak, M. Shao, Y. X. Pan, G. Van Buren, S. S. Shi, C. Yang, David Jonathan Hofman, H. Masui, S. B. Nurushev, M. A.C. Lamont, S. Y. Noh, Roli Esha, Yu-Gang Ma, Jie Zhao, S. Horvat, Xuan Zhang, Hanna Paulina Zbroszczyk, M. Simko, W. Zha, Kurt Jung, A. Sarkar, W. J. Llope, J. Alford, W. Guryn, J. Fedorisin, H. Z. Huang, S. Vokal, D. G. Underwood, Q. Yang, J. Cheng, Yang Yang, L. C. De Silva, Shangfeng Yang, J. H. Chen, D. A. Morozov, Thorsten Sven Kollegger, D. Kalinkin, S. Heppelmann, B. J. Summa, J. B. Zhang, D. D. Koetke, J. E. Draper, S. Ramachandran, O. Eyser, M. M. Mondal, C. Zhong, E. C. Aschenauer, S. Margetis, X. Dong, Y. Guo, Jongmin Lee, R. L. Ray, R. Ma, T. Ljubicic, Niseem Magdy, H. Caines, Sudhir Raniwala, A. Quintero, E. P. Sichtermann, Rashmi Raniwala, T. Ullrich, C. M. Du, and H. S. Xu
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Hadron, Phi meson, Super Proton Synchrotron, Nuclear physics, Quark–gluon plasma, High Energy Physics::Experiment, Multiplicity (chemistry), Nuclear Experiment, Nucleon, Relativistic Heavy Ion Collider, STAR detector
Abstract: We report on measurements of dielectron (e(+) e(-)) production in Au + Au collisions at a center-of-mass energy of 200 GeV per nucleon-nucleon pair using the STAR detector at BNL Relativistic Heavy Ion Collider. Systematic measurements of the dielectron yield as a function of transverse momentum (p(T)) and collision centrality show an enhancement compared to a cocktail simulation of hadronic sources in the low invariant-mass region (M-ee < 1 GeV / c(2)). This enhancement cannot be reproduced by the rho-meson vacuum spectral function. In minimum-bias collisions, in the invariant-mass range of 0.30-0.76 GeV / c(2), integrated over the full pT acceptance, the enhancement factor is 1.76 +/- 0.06 (stat.) +/- 0.26 (sys.) +/- 0.29 (cocktail). The enhancement factor exhibits weak centrality and pT dependence in STAR's accessible kinematic regions, while the excess yield in this invariant-mass region as a function of the number of participating nucleons follows a power-law shape with a power of 1.44 +/- 0.10. Models that assume an in-medium broadening of the rho-meson spectral function consistently describe the observed excess in these measurements. Additionally, we report on measurements of omega-and phi-meson production through their e+ e(-) decay channel. These measurements show good agreement with Tsallis blast-wave model predictions, as well as, in the case of the phi meson, results through its K+ K- decay channel. In the intermediate invariant-mass region (1.1 < Mee < 3 GeV / c(2)), we investigate the spectral shapes from different collision centralities. Physics implications for possible in-medium modification of charmed hadron production and other physics sources are discussed.
Published: 2015

21. Energy dependence ofKπ,pπ, andKpfluctuations in Au + Au collisions fromsNN=7.7to 200 GeV

Author: J. W. Harris, H. Qiu, Vitaly Okorokov, M. Tokarev, E. P. Sichtermann, Bernd Surrow, Mukesh Sharma, G. Wang, T. D. S. Stanislaus, K. Poniatowska, S. K. Gupta, Rashmi Raniwala, H. H. Wieman, Giacomo Contin, I. K. Yoo, R. Haque, Q. H. Xu, E. G. Judd, J. Porter, Nihar Sahoo, W. B. Schmidke, Michal Sumbera, C. A. Gagliardi, Z. J. Sun, T. Ullrich, S. W. Wissink, Y. Zhang, Nikola Poljak, P. Yepes, Ivan Kisel, X. C. Chen, J. C. Dunlop, L. Wen, A. H. Tang, P. Huck, Nasim, Jaroslav Bielcik, L. Kotchenda, J. E. Draper, N. Magdy, Bedangadas Mohanty, C. M. Du, Xiaofeng Luo, I. Bunzarov, Zhigang Xiao, A. Peterson, Anthony Robert Timmins, Adam Ryszard Kisiel, O. V. Rogachevskiy, Zubayer Ahammed, Guo-Liang Ma, H. S. Xu, H. J. Jang, A. M. Poskanzer, Z. Ye, Xuan Zhang, A. I. Hamad, D. Solanki, Q. Y. Shou, B. Huang, H. J. Crawford, R. S. Longacre, J. H. Thomas, M. Calder On De La Barca S'Anchez, M. J. Skoby, L. Fulek, X. Huang, A. Kechechyan, N. G. Minaev, J. L. Drachenberg, Olga Evdokimov, Barbara Antonina Trzeciak, M. K. Mustafa, Zebo Tang, Leo Clifford Greiner, Hanna Paulina Zbroszczyk, W. Christie, Pradip Kumar Sahu, B. Pawlik, A. Gibson, Jian Deng, G. Eppley, L. C. Bland, Y. Wang, Y. Fisyak, Lin Ma, P. Bhattarai, C. Perkins, G. Igo, J. Novak, B. Sharma, Y. Li, A. S. Hirsch, P. Kravtsov, A. M. Schmah, I. Sakrejda, K. Oh, Basanta Kumar Nandi, Y. F. Xu, S. Zhang, A. Sandacz, J. Bouchet, Madan M. Aggarwal, Fuqiang Wang, X. Li, Sergey Voloshin, Jay Roberts, N. Xu, P. Filip, G. Agakishiev, D. S. Gunarathne, G. S. Averichev, K. D. Landry, K. Kauder, J. Butterworth, P. Pile, G. D. Westfall, A. Manion, H. W. Ke, A. Vossen, Anik Gupta, P. Seyboth, D. N. Svirida, Isaac Upsal, Thorsten Sven Kollegger, Andrey Vasiliev, B. Di Ruzza, Z. Chang, J. Pluta, Zongye Zhang, D. Tlusty, I. G. Bordyuzhin, W. Li, Y. F. Wu, Leszek Adamczyk, T. P. Burton, D. Kalinkin, P. Federic, Z. H. Khan, Frank Jm Geurts, H. M. Spinka, H. G. Ritter, R. Witt, F. Videbæk, I. Kulakov, F. Zhao, Mirko Planinic, G. Webb, Rafal Sikora, A. Banerjee, Jifa Tian, J. L. Zhang, L. Yi, S. Mioduszewski, S. Kabana, Sukalyan Chattopadhyay, G. Odyniec, J. Y. Zhang, Rene Bellwied, J. Engelage, G. Nigmatkulov, A. Roy, N. Yu, S. Heppelmann, Y. Zoulkarneeva, C. Zhong, Kejun Kang, L. V. Nogach, Nilay Shah, K. Meehan, Donald M. McDonald, J. M. Landgraf, Sumit R. Das, J. Rusnak, R. E. Tribble, B. J. Summa, P. Chaloupka, Jorn Henning Putschke, A. F. Kraishan, W. J. Llope, G. Van Nieuwenhuizen, Prithwish Tribedy, B. K. Srivastava, A. V. Brandin, M. Strikhanov, L. Ruan, Z. J. Xu, S. Trentalange, K. Xin, J. M. Campbell, Gerald W Hoffmann, Janet Elizabeth Seger, J. Sandweiss, M. Lomnitz, T. G. Dedovich, M. A. Szelezniak, D. Arkhipkin, A. Hamed, D. L. Olvitt, M. A.C. Lamont, S. Y. Noh, Xiangming Sun, K. Yip, J. S. Wang, R. R. Debbe, M. Vandenbroucke, C. Yang, David Jonathan Hofman, M. J.M. Codrington, H. Masui, R. Vertesi, N. K. Pruthi, Y. J. Sun, Wei Xie, J. B. Zhang, D. D. Koetke, J. Takahashi, A. Aparin, S. B. Nurushev, C. Dilks, C-Q. Li, S. Ramachandran, F. Liu, Y. Pandit, N. Schmitz, O. Eyser, Radoslaw Antoni Kycia, E. Shahaliev, M. Shao, Y. X. Pan, G. Van Buren, M. M. Mondal, R. P. Scharenberg, Christina Markert, D. Smirnov, O. Rusnakova, H. Z. Huang, S. Vokal, H. S. Matis, I. G. Alekseev, M. A. Lisa, Y. P. Viyogi, Shangfeng Yang, L. K. Kosarzewski, J. H. Chen, S. S. Shi, R. D. Majka, W. W. Jacobs, D. A. Morozov, T. J. Humanic, J. Schambach, J. Lauret, Anju Bhasin, A. Lebedev, Y. G. Ma, R. Lednicky, T. Tarnowsky, S. Fazio, Abdel Nasser Tawfik, Xiaofeng Zhu, A. Ogawa, R. Varma, B. S. Page, D. P. Kikola, B. Stringfellow, Haiyan Wang, M. R. Girard, C. E. Flores, Y. Guo, Jongmin Lee, R. L. Ray, R. Ma, T. Ljubicic, H. Caines, Sudhir Raniwala, A. Quintero, E. C. Aschenauer, J. K. Adkins, R. Fatemi, L. He, S. Margetis, K. Krueger, X. Dong, M. Cherney, Lokesh Kumar, Hua Pei, S. K. Tripathy, P. V. Shanmuganathan, S. R. Klein, L. E. Dunkelberger, A. A. Derevschikov, Zhiming Li, Maksym Zyzak, J. C. Webb, Jana Bielcikova, P. Sorensen, L. Didenko, I. Chakaberia, D. G. Underwood, Q. Yang, J. Cheng, Yang Yang, L. C. De Silva, Y. Panebratsev, D. Grosnick, Feng, J. Alford, W. Guryn, J. Fedorisin, Roli Esha, Jie Zhao, S. Horvat, O. D. Tsai, J. L. Romero, M. Simko, T. Pawlak, M. C. Cervantes, W. Zha, L. Song, W. Q. Shen, D. Cebra, A. Sarkar, Xiang Sun, D. Garand, Sevil Salur, A. K. Bhati, D. Keane, Nikolai Smirnov, R. Stock, L. G. Efimov, and T. K. Nayak
Subjects: Physics, Quantum chromodynamics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Observable, Collision, 01 natural sciences, 7. Clean energy, Particle identification, Nuclear physics, Critical point (thermodynamics), 0103 physical sciences, Quark–gluon plasma, Heavy ion, Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider
Abstract: © 2015 American Physical Society. ©2015 American Physical Society. A search for the quantum chromodynamics (QCD) critical point was performed by the STAR experiment at the BNL Relativistic Heavy Ion Collider, using dynamical fluctuations of unlike particle pairs. Heavy ion collisions were studied over a large range of collision energies with homogeneous acceptance and excellent particle identification, covering a significant range in the QCD phase diagram where a critical point may be located. Dynamical Kπ, pπ, and Kp fluctuations as measured by the STAR experiment in central 0-5% Au + Au collisions from center-of-mass collision energies sNN=7.7 to 200 GeV are presented. The observable νdyn was used to quantify the magnitude of the dynamical fluctuations in event-by-event measurements of the Kπ, pπ, and Kp pairs. The energy dependences of these fluctuations from central 0-5% Au + Au collisions all demonstrate a smooth evolution with collision energy.
Published: 2015

22. Charged-to-neutral correlation at forward rapidity in Au + Au collisions atsNN=200GeV

Author: Y. Zoulkarneeva, C. Zhong, Y. Guo, Guo-Liang Ma, Zhigang Xiao, R. L. Ray, I-K. Yoo, Li Yi, T. Ljubicic, N. G. Minaev, R. Varma, A. S. Hirsch, B. S. Page, D. P. Kikola, T. Kollegger, W. J. Llope, P. Kravtsov, A. M. Schmah, Dmitry Smirnov, H. Caines, Sudhir Raniwala, J. C. Webb, S. Ramachandran, A. Quintero, B. Stringfellow, F. Liu, Stephen V. Gliske, Miroslav Simko, Mariusz Przybycien, Hao Qiu, H. G. Ritter, P. Filip, L. C. De Silva, Vitaly Okorokov, Michal Sumbera, E. P. Sichtermann, L. C. Bland, N. Xu, P. Pile, G. D. Westfall, S. Bültmann, J. Porter, Y. F. Xu, Bernd Surrow, J. Putschke, Rashmi Raniwala, Nasim, R. D. Majka, J. G. Cramer, S. W. Wissink, Y. Zhang, J. L. Drachenberg, A. Sandacz, John Nelson, Y.X. Pan, A. Gupta, Ivan Kisel, D. N. Svirida, Alice Elisabeth Ohlson, W. Borowski, J. Schambach, Nikola Poljak, M. R. Girard, D. Solanki, M. Tokarev, J. E. Draper, A. Ogawa, Jian Deng, T. Ullrich, Xuan Zhang, H. F. Chen, D. G. Underwood, D. L. Olvitt, C. A. Gagliardi, C. Yang, G. Agakishiev, D. S. Gunarathne, H. W. Ke, Jun-jie Zhang, C. M. Du, H. S. Xu, L. Eun, S. K. Das, E. W. Oldag, T. S. McShane, L. Kotchenda, P. Bhattarai, D. Tlusty, B. Pawlik, B. Huang, Lisa, M. J.M. Codrington, D. J. Hofman, F. Ding, Xiangyuan Cui, W. Christie, Hanna Paulina Zbroszczyk, D. R. Beavis, C-Q. Li, Madan M. Aggarwal, Fuqiang Wang, J. Rusnak, Basanta Kumar Nandi, A. F. Kraishan, P. Djawotho, R. P. Scharenberg, Christina Markert, O. Rusnakova, H. S. Matis, X. L. Wang, M. M. Mondal, J. Cheng, T. J. M. Symons, Andrey Vasiliev, J. Takahashi, T. D. S. Stanislaus, M. A. C. Lamont, S. B. Nurushev, S.Y. Noh, A. Roy, C. E. Flores, E. G. Judd, A. Kechechyan, N.R. Sahoo, X.G. Li, S. Zhang, H. H. Wieman, Szelezniak, E. C. Aschenauer, L. K. Kosarzewski, S. Margetis, R. Witt, L. Ruan, C. D. Anson, J. Novak, A. Vossen, F. Videbæk, Z. Chang, Li-Yi Chen, N. K. Pruthi, G. Eppley, P. Sorensen, W. W. Jacobs, J.H. Lee, F. Zhao, J. M. Campbell, J. Turnau, J. Lauret, K. Xin, Y. J. Sun, A. M. Poskanzer, X. Dong, G. Webb, Z. H. Khan, C. Dilks, Bedangadas Mohanty, Sukalyan Chattopadhyay, Justin Stevens, B. Di Ruzza, Jie Zhao, S. Horvat, M. Shao, G. Van Buren, A. Chikanian, Anju Bhasin, J. W. Harris, S. S. Shi, S. Kabana, Y. P. Viyogi, Z.P. Zhang, J. Pluta, M. Zyzak, W. Li, Jana Bielcikova, K. Kang, R. Lednicky, J.M. Landgraf, M. K. Mustafa, J. F. Ross, Robert Vertesi, Radoslaw Antoni Kycia, J. Engelage, Z.M. Li, Jaroslav Bielcik, Z. Ye, A. Lebedev, A. Banerjee, W. Zha, M. Wada, W.B. Schmidke, T. J. Humanic, G. Nigmatkulov, T. G. Dedovich, X. Huang, Rene Bellwied, Wei Xie, Y. Li, E. Sangaline, D. Arkhipkin, Prithwish Tribedy, L-X. Han, J. L. Zhang, B. K. Srivastava, M. Lomnitz, J. H. Thomas, A. Hamed, P. Yepes, S.G. Brovko, A. Davila Leyva, S. Mioduszewski, X. G. Luo, Pradip Kumar Sahu, O. V. Rogachevskiy, H. J. Jang, R.E. Tribble, J. Alford, D. P. Mahapatra, S. Fazio, I. G. Bordyuzhin, X. Zhu, Y. H. Zhu, Y. Wang, Mirko Planinic, W. Guryn, I. G. Alekseev, A. H. Tang, A. Aparin, D. D. Koetke, G. M.S. Vasconcelos, L. Didenko, M. Strikhanov, J. Konzer, Haiyan Wang, G. S. Averichev, J. Fedorisin, D.R. Gangadharan, T. P. Burton, H. Masui, Gerald W Hoffmann, K.S. Engle, M. Calderon De La Barca Sanchez, Yu-Gang Ma, P. V. Shanmuganathan, I. Bunzarov, Y. Pandit, G. Odyniec, J. Sandweiss, X. M. Sun, N. Schmitz, J. C. Dunlop, E. Shahaliev, T. Tarnowsky, M.J. Skoby, L. E. Dunkelberger, Zubayer Ahammed, I. Koralt, N. Yu, L. V. Nogach, D. McDonald, A. A. Derevschikov, W. Yan, T. Pawlak, P. Chaloupka, Amal Sarkar, Q. Y. Shou, S. Trentalange, H.M. Spinka, Olga Evdokimov, Barbara Antonina Trzeciak, Y. F. Wu, Jay Roberts, K. Krueger, B. Haag, Zebo Tang, Janusz Chwastowski, Leo Clifford Greiner, C. Perkins, Frank Jm Geurts, K. Poniatowska, P. Seyboth, S. K. Gupta, Giacomo Contin, Leszek Adamczyk, R. Derradi de Souza, P. Huck, Anthony Robert Timmins, Adam Ryszard Kisiel, H. J. Crawford, J. K. Adkins, I. Kulakov, R. Fatemi, J. A. Vanfossen, M. Cherney, Lokesh Kumar, A. V. Brandin, Hua Pei, J. Seger, Y. Panebratsev, D. Grosnick, G. Wang, Z. Z. Xu, J.L. Romero, A. Kesich, R. Cendejas, Nikita Smirnov, Z. J. Sun, A. K. Bhati, D. Keane, R. Stock, Xu Sun, K. Yip, J. S. Wang, R. R. Debbe, C. K. Riley, Rihan Haque, H. Z. Huang, L. G. Efimov, T. K. Nayak, O. D. Tsai, S. Vokal, M. C. Cervantes, Q. H. Xu, W. Q. Shen, G. J. van Nieuwenhuizen, D. Cebra, D. Garand, Y. Fisyak, Maxence Vandenbroucke, Sevil Salur, K. Oh, J. Xu, I. Sakrejda, Y. Yang, Nilay Shah, J. H. Chen, D. A. Morozov, D. Kalinkin, R. S. Longacre, S. Heppelmann, O. Eyser, G. Igo, B. Sharma, J. Bouchet, K. D. Landry, K. Kauder, J. Butterworth, H. Bichsel, and A. Gibson
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Photon, 010308 nuclear & particles physics, 01 natural sciences, Charged particle, Nuclear physics, Particle decay, Pion, Isospin, 0103 physical sciences, Quark–gluon plasma, Rapidity, 010306 general physics, Relativistic Heavy Ion Collider
Abstract: Event-by-event fluctuations of the multiplicities of inclusive charged particles and photons at forward rapidity in Au + Au collisions at root s(NN) = 200 GeV have been studied. The dominant contribution to such fluctuations is expected to come from correlated production of charged and neutral pions. We search for evidence of dynamical fluctuations of different physical origins. Observables constructed out of moments of multiplicities are used as measures of fluctuations. Mixed events and model calculations are used as base lines. Results are compared to the dynamical net-charge fluctuations measured in the same acceptance. A nonzero statistically significant signal of dynamical fluctuations is observed in excess to the model prediction when charged particles and photons are measured in the same acceptance. We find that, unlike dynamical net-charge fluctuation, charge-neutral fluctuation is not dominated by correlation owing to particle decay. Results are compared to the expectations based on the generic production mechanism of pions owing to isospin symmetry, for which no significant (
Published: 2015

23. ΛΛCorrelation Function inAu+AuCollisions atsNN=200 GeV

Author: J. G. Cramer, Rashmi Raniwala, Michal Sumbera, L. Kotchenda, M. R. Girard, S. Bültmann, D. L. Olvitt, Amal Sarkar, T. Ullrich, S. W. Wissink, E. W. Oldag, Y. Zhang, Nikola Poljak, C. M. Du, H. S. Xu, L. Eun, J. E. Draper, M. K. Mustafa, P. V. Shanmuganathan, B. Haag, T. Tarnowsky, L. E. Dunkelberger, Y. Guo, Jongmin Lee, Y. Li, A. K. Bhati, D. Keane, Haiyan Wang, J. Rusnak, Z. Ye, H. W. Ke, A. F. Kraishan, S. Fazio, Olga Evdokimov, Barbara Antonina Trzeciak, R. Stock, Jay Roberts, K. Krueger, L. G. Efimov, D. P. Mahapatra, L. Ruan, X. Huang, Zebo Tang, Janusz Chwastowski, Q. H. Xu, A. Kechechyan, I. G. Bordyuzhin, Mirko Planinic, T. Ljubicic, A. A. Derevschikov, T. K. Nayak, D. G. Underwood, F. Videbæk, G. Eppley, X. M. Sun, C. D. Anson, O. D. Tsai, H. Caines, Sudhir Raniwala, Pradip Kumar Sahu, J. Xu, G. Webb, Leo Clifford Greiner, J. M. Campbell, J. Turnau, P. Sorensen, Sukalyan Chattopadhyay, A. Quintero, R. Cendejas, M. C. Cervantes, Stephen V. Gliske, Rihan Haque, M. Shao, Y. X. Pan, G. Van Buren, J. W. Harris, Bedangadas Mohanty, W. Q. Shen, R. Varma, B. S. Page, P. Seyboth, D. P. Kikola, S. S. Shi, Robert Vertesi, T. G. Dedovich, H. Z. Huang, S. Vokal, H. G. Ritter, D. Garand, B. Stringfellow, T. S. McShane, C. Perkins, J. Pluta, Madan M. Aggarwal, D. Solanki, M. Zyzak, P. Bhattarai, Fuqiang Wang, J. H. Thomas, Wenbin Yan, J. Engelage, Zhigang Xiao, Sevil Salur, Leszek Adamczyk, R. Derradi de Souza, J. M. Nelson, G. Nigmatkulov, M. Tokarev, W. Li, F. Ding, R. S. Longacre, Y. Panebratsev, Y. Wang, N. G. Minaev, D. Grosnick, Y. J. Sun, H. Masui, J. H. Chen, Anju Bhasin, C. Dilks, Rajarshi Ray, L. Didenko, P. Yepes, A. Davila Leyva, Y. F. Xu, X. G. Luo, S. Kabana, J. Cheng, Zhiming Li, I. Koralt, M. Wada, Y. G. Ma, C. Yang, Rene Bellwied, Y. H. Zhu, T. D. S. Stanislaus, X. L. Wang, I. Kulakov, M. J. M. Codrington, E. C. Aschenauer, S. Margetis, S. G. Brovko, Jian Deng, Y. P. Viyogi, N. Xu, P. Filip, X. Dong, M. Lomnitz, G. Igo, J. Novak, B. Sharma, J. Bouchet, K. D. Landry, R. E. Tribble, Jize Zhao, H. H. Wieman, K. Kauder, Gerald W Hoffmann, N. Yu, L. V. Nogach, D. A. Morozov, Alice Elisabeth Ohlson, M. J. Skoby, Frank Jm Geurts, A. H. Tang, Z. Z. Xu, Nikita Smirnov, I. Bunzarov, K. Kang, A. Lebedev, J. M. Landgraf, P. Pile, G. D. Westfall, S. Das, A. Gupta, Justin Stevens, D. J. Hofman, D. Kalinkin, G. Agakishiev, D. S. Gunarathne, G. Wang, T. J. M. Symons, L. C. De Silva, M. Strikhanov, A. Vossen, S. Heppelmann, J. Konzer, Guo-Liang Ma, D. N. Svirida, G. S. Averichev, J. Takahashi, M. A. C. Lamont, J. Porter, I. K. Yoo, G. Odyniec, J. Sandweiss, D. Cebra, P. Djawotho, S. Ramachandran, O. Eyser, Li Yi, S. B. Nurushev, B. Huang, Aditi Banerjee, Ivan Kisel, Z. J. Sun, Z. P. Zhang, A. S. Hirsch, M. M. Mondal, D. Tlusty, T. Kollegger, C. E. Flores, E. G. Judd, P. Kravtsov, A. M. Schmah, Dmitry Smirnov, F. Liu, Miroslav Simko, Mariusz Przybycien, L. C. Bland, C. K. Riley, D. R. Gangadharan, Niladribihari Sahoo, N. K. Pruthi, Radoslaw Antoni Kycia, Jaroslav Bielcik, Z. H. Khan, Jie Zhang, G. J. van Nieuwenhuizen, M. A. Szelezniak, I. G. Alekseev, M. A. Lisa, Md. Nasim, M. Calderon De La Barca Sanchez, Y. Fisyak, R. D. Majka, J. L. Drachenberg, A. Roy, K. Oh, O. V. Rogachevskiy, H. J. Jang, W. Borowski, Z. Chang, J. Schambach, Xiangyuan Cui, W. Christie, H. Bichsel, A. Gibson, Y. Zoulkarneeva, C. Zhong, D. D. Koetke, Andrey Vasiliev, Li-Zhu Chen, X.G. Li, Vitaly Okorokov, J. C. Dunlop, Bernd Surrow, Zubayer Ahammed, Janet Elizabeth Seger, H. M. Spinka, Q. Y. Shou, J. M. Butterworth, W. B. Schmidke, R. Witt, J. C. Webb, S. Mioduszewski, Donald M. McDonald, C. A. Gagliardi, Prithwish Tribedy, B. K. Srivastava, Wei Xie, A. Aparin, G. M.S. Vasconcelos, Hao Qiu, Y. Pandit, N. Schmitz, E. Shahaliev, Jana Bielcikova, J. L. Romero, Y. F. Wu, J. Putschke, Xiaofeng Zhu, A. Ogawa, H. F. Chen, C-Q. Li, I. Sakrejda, R. P. Scharenberg, Christina Markert, J. Alford, O. Rusnakova, W. Guryn, H. S. Matis, J. Fedorisin, L. K. Kosarzewski, B. Di Ruzza, S. Horvat, T. Pawlak, W. Zha, W. W. Jacobs, J. Lauret, R. Lednicky, J. F. Ross, Y. Yang, Nilay Shah, K. Yip, J. S. Wang, R. R. Debbe, K. Poniatowska, Maxence Vandenbroucke, S. K. Gupta, Giacomo Contin, P. Huck, A. V. Brandin, Anthony Robert Timmins, K. Xin, Adam Ryszard Kisiel, H. J. Crawford, J. K. Adkins, R. Fatemi, J. A. Vanfossen, A. Kesich, M. Cherney, Xiangming Sun, K. S. Engle, Lokesh Kumar, Hua Pei, B. Pawlik, Basanta Kumar Nandi, S. Zhang, A. M. Poskanzer, T. P. Burton, P. Chaloupka, S. Trentalange, A. Chikanian, T. J. Humanic, E. Sangaline, D. Arkhipkin, A. Hamed, L-X. Han, S. Y. Noh, J. L. Zhang, W. J. Llope, Xuan Zhang, Hanna Paulina Zbroszczyk, D. R. Beavis, F. Zhao, and E. P. Sichtermann
Subjects: Physics, Particle physics, General Physics and Astronomy, Production (computer science), Function (mathematics), Correlation function (quantum field theory), Nuclear Experiment, Lambda
Abstract: A high statistics measurement of the $\mathrm{\ensuremath{\Lambda}}\phantom{\rule{0}{0ex}}\mathrm{\ensuremath{\Lambda}}$ correlation function in heavy-ion collisions at RHIC suggests that the strength of the interaction is weak and provides a new limit on H-dibaryon production.
Published: 2015

24. Dielectron azimuthal anisotropy at mid-rapidity in Au + Au collisions atsNN=200GeV

Author: T. P. Burton, M. K. Mustafa, Y. Li, D. P. Mahapatra, Y. Xu, P. Chaloupka, Z. J. Xu, H. Z. Huang, S. Vokal, S. Trentalange, H. Qiu, J. H. Chen, S. S. Shi, M. Tokarev, J. Turnau, J. K. Adkins, R. Fatemi, T. D. S. Stanislaus, K. Krueger, T. G. Dedovich, H. H. Wieman, J. A. Vanfossen, D. A. Morozov, M. Cherney, A. M. Poskanzer, Z. Ye, K. S. Engle, Hua Pei, X. Huang, A. Kechechyan, Pradip Kumar Sahu, J. L. Romero, S. K. Gupta, Giacomo Contin, Nihar Sahoo, P. Huck, Anthony Robert Timmins, Adam Ryszard Kisiel, E. Finch, Xiangyuan Cui, W. Christie, H. J. Crawford, Andrey Vasiliev, Xuan Zhang, D. G. Underwood, S. Fazio, R. S. Longacre, Hanna Paulina Zbroszczyk, Janet Elizabeth Seger, D. R. Beavis, Wei Xie, J. W. Harris, R. Vertesi, A. Aparin, G. M.S. Vasconcelos, Haiyan Wang, F. Zhao, F. Liu, Thorsten Sven Kollegger, Mariusz Przybycien, Y. Pandit, G. Igo, J. Novak, C. K. Riley, D. Kalinkin, J. Cheng, T. J. M. Symons, S. Heppelmann, M. A.C. Lamont, L-X. Han, S. Y. Noh, N. Schmitz, B. Sharma, J. G. Cramer, E. Shahaliev, C. Yang, David Jonathan Hofman, I. Koralt, M. J.M. Codrington, H. Masui, N. Yu, J. Bouchet, Kejun Kang, L. V. Nogach, L. Eun, K. D. Landry, J. B. Zhang, D. D. Koetke, L. C. De Silva, J. E. Draper, K. Kauder, J. Butterworth, Sumit R. Das, G. Van Nieuwenhuizen, S. Ramachandran, P. Yepes, A. Davila Leyva, O. Eyser, M. R. Girard, M. M. Mondal, X. L. Wang, R. D. Majka, A. H. Tang, J. Takahashi, S. B. Nurushev, E. C. Aschenauer, W. Borowski, H. Bichsel, G. Odyniec, Yu-Gang Ma, Y. Zoulkarneeva, C. Zhong, Y. Fisyak, J. Alford, M. Shao, Y. X. Pan, G. Van Buren, S. Margetis, J. Schambach, W. J. Llope, I. Bunzarov, W. Guryn, Anju Bhasin, K. Oh, E. W. Oldag, X. Dong, Q. H. Xu, Bernd Surrow, J. M. Nelson, J. Xu, J. C. Dunlop, A. Lebedev, S. K. Pal, Justin Stevens, T. J. Humanic, W. Peryt, A. Ohlson, R. N. Singaraju, Y. F. Wu, Zubayer Ahammed, M. J. LeVine, J. Fedorisin, W. B. Schmidke, E. P. Sichtermann, G. Wang, C. A. Gagliardi, R. Varma, M. Pachr, B. S. Page, P. V. Shanmuganathan, D. P. Kikola, Lokesh Kumar, Rashmi Raniwala, Jie Zhao, B. Stringfellow, T. S. McShane, P. Bhattarai, Q. Y. Shou, S. Horvat, Z. J. Sun, L. E. Dunkelberger, M. A. Szelezniak, T. Ullrich, J. L. Drachenberg, Olga Evdokimov, Barbara Antonina Trzeciak, T. Pawlak, Y. J. Sun, W. Zha, P. Seyboth, C. Dilks, S. Kabana, C. M. Du, Leszek Adamczyk, R. Derradi de Souza, A. Sarkar, Jian Deng, Y. P. Viyogi, H. S. Xu, M. Calderon De La Barca Sanchez, A. A. Derevschikov, Jay Roberts, G. Agakishiev, D. S. Gunarathne, Y. Guo, I. Kulakov, Jongmin Lee, R. L. Ray, D. Cebra, J. Porter, Zhiming Li, H. W. Ke, O. D. Tsai, B. Di Ruzza, Ivan Kisel, T. Ljubicic, M. C. Cervantes, Maksym Zyzak, H. Caines, Sudhir Raniwala, W. Q. Shen, A. Quintero, J. H. Thomas, R. Witt, Xiang Sun, Anik Gupta, S. Mioduszewski, D. Garand, J. C. Webb, Radoslaw Antoni Kycia, Y. Zawisza, Frank Jm Geurts, Donald M. McDonald, Sevil Salur, Y. Wang, Prithwish Tribedy, B. K. Srivastava, G. S. Averichev, I. G. Alekseev, M. A. Lisa, Michal Sumbera, F. Ding, Z. Chang, Li-Yi Chen, Y. Panebratsev, D. Grosnick, P. R. Pujahari, S. Bültmann, S. W. Wissink, Jana Bielcikova, D. L. Olvitt, B. Haag, A. Chikanian, H. M. Spinka, E. Sangaline, D. Arkhipkin, A. Hamed, P. Sorensen, A. Banerjee, Nikola Poljak, B. Pawlik, A. Gibson, Basanta Kumar Nandi, S. Zhang, Zebo Tang, V. A. Okorokov, Janusz Chwastowski, L. Didenko, Leo Clifford Greiner, A. K. Bhati, D. Keane, S. Dhamija, I. K. Yoo, Nikolai Smirnov, R. Stock, C. Perkins, Xiaofeng Luo, Guo-Liang Ma, L. G. Efimov, T. K. Nayak, R. Haque, Z. P. Zhang, C. E. Flores, E. G. Judd, A. S. Hirsch, P. Kravtsov, A. M. Schmah, C. D. Anson, Bedangadas Mohanty, M. Wada, F. Videbæk, G. Webb, Sukalyan Chattopadhyay, Yifei Zhang, M. Lomnitz, N. Xu, P. Filip, Stephen V. Gliske, G. Eppley, P. Pile, G. D. Westfall, Xiaofeng Zhu, J. Pluta, J. L. Zhang, A. Ogawa, H. F. Chen, W. Li, H. G. Ritter, Wenbin Yan, C-Q. Li, Zhigang Xiao, B. Huang, R. P. Scharenberg, Christina Markert, D. Smirnov, O. Rusnakova, N. G. Minaev, H. S. Matis, Rene Bellwied, A. Roy, X. Li, I. Sakrejda, Y. H. Zhu, R. E. Tribble, W. W. Jacobs, J. Rusnak, A. F. Kraishan, Jaroslav Bielcik, J. Lauret, L. Ruan, Gerald W Hoffmann, R. Lednicky, T. Tarnowsky, P. Djawotho, J. F. Ross, D. Tlusty, I. G. Bordyuzhin, Mirko Planinic, Y. Yang, O. V. Rogachevskiy, L. Yi, H. J. Jang, Nilay Shah, Jorn Henning Putschke, A. V. Brandin, L. C. Bland, J. Engelage, K. Xin, G. Nigmatkulov, S. G. Brovko, D. N. Svirida, J. M. Landgraf, Madan M. Aggarwal, Fuqiang Wang, M. Strikhanov, J. Konzer, A. Kesich, D. Solanki, Xiangming Sun, R. Cendejas, J. Sandweiss, M. J. Skoby, Nasim, K. Yip, A. Vossen, J. S. Wang, R. R. Debbe, M. Vandenbroucke, D. M.M.D. Madagodagettige Don, D. R. Gangadharan, N. K. Pruthi, Z. H. Khan, and L. Kotchenda
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 7. Clean energy, Particle identification, Nuclear physics, Azimuth, Transverse momentum, Quark–gluon plasma, High Energy Physics::Experiment, Rapidity, Nuclear Experiment, Anisotropy, Relativistic Heavy Ion Collider, STAR detector
Abstract: We report on the first measurement of the azimuthal anisotropy (v2) of dielectrons (e+e− pairs) at mid-rapidity from √sNN=200 GeV Au + Au collisions with the STAR detector at the Relativistic Heavy Ion Collider (RHIC), presented as a function of transverse momentum (pT) for different invariant-mass regions. In the mass region Mee
Published: 2014

25. The detector upgrade program of the STAR experiment at RHIC at BNL

Author: Bernd Surrow
Subjects: Quantum chromodynamics, Physics, Nuclear and High Energy Physics, Particle physics, Proton, Nuclear Theory, Detector, Particle detector, law.invention, Nuclear physics, Upgrade, law, Quark–gluon plasma, Physics::Accelerator Physics, High Energy Physics::Experiment, Nuclear Experiment, Collider, Instrumentation, STAR detector
Abstract: The Relativistic Heavy-Ion Collider (RHIC) at Brookhaven National Laboratory (BNL) is a unique facility, which allows studying the collision of different nuclei and polarized protons at variable energy. The spin physics program at RHIC at BNL focuses on the collision of polarized protons at a centre-of-mass energy of 200–500 GeV to gain a deeper understanding of the spin structure and dynamics of the proton. The relativistic heavy-ion program studies the behavior of matter under extreme conditions in Au–Au and d–Au collisions. Recent results provide strong evidence for the formation of a new state of strongly interacting matter. The long-term program, to study quantum chromodynamics (QCD) at RHIC in further detail, requires various upgrades and additions to the existing STAR detector over the next 10 years, which is the main focus of the following paper.
Published: 2005

26. Observation ofD0Meson Nuclear Modifications inAu+AuCollisions atsNN=200 GeV

Author: P. Bhattarai, M. Shao, Y. X. Pan, G. Van Buren, G. Eppley, C. D. Anson, L. Kotchenda, D. L. Olvitt, J. M. Nelson, J. Pluta, P. R. Pujahari, H. Qiu, W. Peryt, W. Li, J. Turnau, M. K. Mustafa, Thorsten Sven Kollegger, Y. J. Sun, C. Dilks, B. Huang, Rene Bellwied, D. Kalinkin, Bedangadas Mohanty, T. G. Dedovich, M. Tokarev, Madan M. Aggarwal, Xuan Zhang, Hanna Paulina Zbroszczyk, D. R. Beavis, Y. Li, N. Xu, P. Filip, Fuqiang Wang, S. Kabana, Y. P. Viyogi, Y. H. Zhu, C. Yang, S. Heppelmann, R. E. Tribble, F. Zhao, David Jonathan Hofman, M. J.M. Codrington, H. Masui, Radoslaw Antoni Kycia, M. A.C. Lamont, L-X. Han, S. Y. Noh, Gerald W Hoffmann, P. Pile, G. D. Westfall, P. V. Shanmuganathan, D. P. Mahapatra, Yu-Gang Ma, T. D. S. Stanislaus, Anju Bhasin, X. L. Wang, C. Zhong, E. C. Aschenauer, L. Eun, W. J. Llope, L. E. Dunkelberger, I. G. Alekseev, M. A. Lisa, J. K. Adkins, M. Wada, S. Margetis, A. Vossen, H. H. Wieman, I. Sakrejda, J. Takahashi, T. P. Burton, A. Ohlson, X. Dong, Anik Gupta, S. K. Pal, Justin Stevens, R. Fatemi, Y. Zawisza, K. Krueger, J. B. Zhang, D. D. Koetke, J. E. Draper, S. Ramachandran, R. S. Longacre, Xiangming Sun, A. A. Derevschikov, J. G. Cramer, F. Videbæk, G. Webb, S. B. Nurushev, Zhiming Li, L. C. Bland, A. Lebedev, Frank Jm Geurts, G. Wang, Jie Zhao, S. Horvat, J. A. Vanfossen, O. Eyser, X. Li, M. R. Girard, M. M. Mondal, Michal Sumbera, Jaroslav Bielcik, S. Fazio, J. Rusnak, Maksym Zyzak, M. Cherney, Xiaofeng Zhu, A. F. Kraishan, S. Bültmann, Y. Yang, L. Yi, J. L. Zhang, S. W. Wissink, I. Koralt, G. Igo, Sukalyan Chattopadhyay, J. C. Webb, A. K. Bhati, O. V. Rogachevskiy, H. J. Jang, D. Keane, K. S. Engle, J. Novak, L. Ruan, Hua Pei, N. Yu, E. W. Oldag, Kejun Kang, L. V. Nogach, A. M. Poskanzer, Y. Zhang, Nilay Shah, Nikola Poljak, B. Sharma, J. Bouchet, Z. J. Sun, Amitava Roy, A. Ogawa, H. Z. Huang, K. D. Landry, K. Kauder, Sumit R. Das, J. H. Thomas, Nikolai Smirnov, Jian Deng, R. Stock, N. K. Pruthi, T. J. Humanic, Y. Guo, S. Vokal, G. Van Nieuwenhuizen, S. K. Gupta, Giacomo Contin, Z. Ye, Jorn Henning Putschke, H. F. Chen, S. H. Zhang, A. V. Brandin, J. Butterworth, Jongmin Lee, Haiyan Wang, L. G. Efimov, C-Q. Li, G. Agakishiev, D. S. Gunarathne, R. P. Scharenberg, Christina Markert, Nihar Sahoo, X. Huang, A. Kechechyan, B. Haag, K. Xin, T. Pawlak, C. K. Riley, D. Smirnov, Jana Bielcikova, O. Rusnakova, Bernd Surrow, R. L. Ray, P. Huck, H. S. Matis, D. Cebra, Pradip Kumar Sahu, I. K. Yoo, Wenbin Yan, T. K. Nayak, Zebo Tang, Q. H. Xu, R. Varma, O. D. Tsai, S. G. Brovko, Zhigang Xiao, J. H. Chen, S. S. Shi, Anthony Robert Timmins, W. Zha, P. Sorensen, W. W. Jacobs, Adam Ryszard Kisiel, Y. Xu, Janusz Chwastowski, R. Haque, J. Lauret, Leo Clifford Greiner, M. Lomnitz, A. Kesich, W. B. Schmidke, B. S. Page, Y. Fisyak, A. Sarkar, R. Lednicky, C. A. Gagliardi, H. J. Crawford, D. P. Kikola, J. Xu, P. Chaloupka, M. C. Cervantes, R. Cendejas, N. G. Minaev, C. E. Flores, E. G. Judd, T. Ljubicic, Wei Xie, T. Tarnowsky, P. Djawotho, H. Bichsel, G. Odyniec, Y. Zoulkarneeva, M. Pachr, B. Stringfellow, K. Oh, L. Didenko, Z. J. Xu, D. A. Morozov, J. F. Ross, D. N. Svirida, S. Dhamija, G. S. Averichev, C. Perkins, W. Q. Shen, R. N. Singaraju, K. Yip, D. Tlusty, I. G. Bordyuzhin, Mirko Planinic, H. Caines, Sudhir Raniwala, A. Quintero, A. Aparin, Xiang Sun, P. Seyboth, J. S. Wang, R. R. Debbe, J. Alford, Z. Chang, Li-Yi Chen, D. Garand, W. Guryn, M. Vandenbroucke, S. Trentalange, G. M.S. Vasconcelos, Leszek Adamczyk, R. Derradi de Souza, Xiaofeng Luo, Guo-Liang Ma, A. Chikanian, Sevil Salur, Y. Wang, E. P. Sichtermann, J. Fedorisin, I. Kulakov, F. Ding, Z. P. Zhang, A. S. Hirsch, Y. Pandit, M. A. Szelezniak, Y. Panebratsev, D. Grosnick, H. M. Spinka, P. Kravtsov, A. M. Schmah, D. G. Underwood, Rashmi Raniwala, E. Sangaline, N. Schmitz, D. Arkhipkin, A. Hamed, E. Shahaliev, A. Banerjee, J. Cheng, T. J. M. Symons, L. C. De Silva, J. Porter, Ivan Kisel, Stephen V. Gliske, T. Ullrich, Y. F. Wu, Xiangyuan Cui, W. Christie, C. M. Du, B. Pawlik, H. S. Xu, A. Gibson, Basanta Kumar Nandi, J. L. Romero, E. Finch, Andrey Vasiliev, V. A. Okorokov, H. G. Ritter, Janet Elizabeth Seger, R. Vertesi, D. Solanki, F. Liu, Mariusz Przybycien, M. J. Skoby, R. D. Majka, W. Borowski, J. Schambach, M. Calderon De La Barca Sanchez, J. C. Dunlop, Zubayer Ahammed, M. J. LeVine, J. W. Harris, Q. Y. Shou, J. L. Drachenberg, Olga Evdokimov, Barbara Antonina Trzeciak, P. Yepes, A. Davila Leyva, A. H. Tang, Jay Roberts, I. Bunzarov, H. W. Ke, B. Di Ruzza, Lokesh Kumar, Nasim, R. Witt, S. Mioduszewski, Donald M. McDonald, Prithwish Tribedy, B. K. Srivastava, D. M.M.D. Madagodagettige Don, D. R. Gangadharan, Z. H. Khan, J. Engelage, G. Nigmatkulov, J. M. Landgraf, M. Strikhanov, J. Konzer, J. Sandweiss, and T. S. McShane
Subjects: Quark, Physics, Particle physics, Meson, 010308 nuclear & particles physics, Nuclear Theory, High Energy Physics::Phenomenology, Hadron, General Physics and Astronomy, 01 natural sciences, Hadronization, Charm quark, Nuclear physics, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Nucleon, QCD matter, Boson
Abstract: We report the first measurement of charmed-hadron (D-0) production via the hadronic decay channel (D-0 -> K- + pi(+)) in Au + Au collisions at root(NN)-N-s = 200 GeV with the STAR experiment. The charm production cross section per nucleon- nucleon collision at midrapidity scales with the number of binary collisions, N-bin, from p + p to central Au + Au collisions. The D-0 meson yields in central Au + Au collisions are strongly suppressed compared to those in p + p scaled by N-bin, for transverse momenta p(T) > 3 GeV/c, demonstrating significant energy loss of charm quarks in the hot and dense medium. An enhancement at intermediate p(T) is also observed. Model calculations including strong charm-medium interactions and coalescence hadronization describe our measurements.
Published: 2014

27. Beam Energy Dependence of Moments of the Net-Charge Multiplicity Distributions inAu+AuCollisions at RHIC

Author: Xiangyuan Cui, W. Christie, D. G. Underwood, J. H. Thomas, U. G. Desouza, Andrey Vasiliev, H. Bichsel, G. Odyniec, Y. Zoulkarneeva, Janet Elizabeth Seger, C. Zhong, Xiaofeng Luo, J. Cheng, T. J. M. Symons, C. D. Anson, L. C. De Silva, Guo-Liang Ma, G. S. Averichev, N. R. Sahoo, Z. P. Zhang, A. S. Hirsch, Bedangadas Mohanty, G. Wang, P. Kravtsov, A. M. Schmah, J. Turnau, Wenbin Yan, W. J. Llope, Thorsten Sven Kollegger, J. G. Cramer, Z. Chang, Li-Yi Chen, J. Alford, Zhigang Xiao, David Jonathan Hofman, T. G. Dedovich, Z. J. Sun, M. J.M. Codrington, H. Masui, D. Kalinkin, W. Guryn, A. V. Brandin, T. P. Burton, M. Wada, Nasim, A. K. Bhati, S. Heppelmann, N. G. Minaev, B. Haag, G. Eppley, D. Keane, Anik Gupta, Y. Zawisza, Zebo Tang, Janusz Chwastowski, S. Dhamija, C. Perkins, Frank Jm Geurts, A. Ohlson, Nikolai Smirnov, H. M. Spinka, R. S. Longacre, K. Xin, J. Fedorisin, Marcelo Gameiro Munhoz, Radoslaw Antoni Kycia, L. G. Efimov, L. Eun, A. Banerjee, J. Takahashi, S. B. Nurushev, L. Kotchenda, R. A.N. Oliveira, T. K. Nayak, C. K. Riley, R. Vertesi, J. B. Zhang, D. D. Koetke, J. Pluta, I. G. Alekseev, Donika Plyku, M. A. Lisa, O. D. Tsai, J. E. Draper, W. Li, F. Videbæk, A. Roy, X. Li, B. Huang, I. K. Yoo, F. Liu, G. Webb, J. Porter, Bernd Surrow, Ivan Kisel, Mariusz Przybycien, S. Ramachandran, G. Igo, J. Novak, A. Kesich, R. Cendejas, R. Haque, Y. Guo, D. Tlusty, Y. Fisyak, M. C. Cervantes, J. Rusnak, L. Ruan, M. M. Mondal, Lokesh Kumar, B. Sharma, J. Bouchet, K. Oh, W. Q. Shen, C. E. Flores, E. G. Judd, I. G. Bordyuzhin, Mirko Planinic, K. D. Landry, K. Kauder, J. Butterworth, Jongmin Lee, R. L. Ray, Jie Zhao, S. Horvat, Xiang Sun, A. M. Poskanzer, Z. Ye, D. Garand, Rene Bellwied, Y. H. Zhu, L. M. Lima, R. E. Tribble, Gerald W Hoffmann, Sukalyan Chattopadhyay, P. Seyboth, R. Corliss, D. M.M.D. Madagodagettige Don, D. R. Gangadharan, A. Szanto de Toledo, T. Pawlak, M. Shao, Y. X. Pan, G. Van Buren, M. K. Mustafa, Xuan Zhang, Hanna Paulina Zbroszczyk, H. Z. Huang, S. Vokal, N. Xu, P. Filip, I. Koralt, Kejun Kang, L. V. Nogach, P. Pile, G. D. Westfall, Sumit R. Das, G. Van Nieuwenhuizen, Jun Deng, Y. Li, Alexandre Alarcon Do Passo Suaide, D. P. Mahapatra, D. R. Beavis, F. Zhao, A. Kechechyan, Pradip Kumar Sahu, Leszek Adamczyk, R. Derradi de Souza, J. M. Nelson, Jing-Han Chen, I. Kulakov, S. Fazio, W. Peryt, R. D. Majka, W. Borowski, J. Schambach, R. N. Singaraju, Anju Bhasin, A. Peterson, A. Lebedev, O. Hajkova, Sevil Salur, Y. Wang, Wolfgang Korsch, Xiaofeng Zhu, A. Ogawa, Y. Xu, P. Chaloupka, S. S. Shi, D. A. Morozov, Z. H. Khan, J. W. Harris, P. Yepes, A. Davila Leyva, A. H. Tang, Z. Barnovska, W. B. Schmidke, C. A. Gagliardi, Michal Sumbera, M. Pachr, S. Bültmann, Jaroslav Bielcik, S. W. Wissink, G. Agakishiev, D. Cebra, W. Zha, A. Sarkar, S. Trentalange, Xiangming Sun, B. Pawlik, A. Gibson, O. V. Rogachevskiy, H. J. Jang, N. K. Pruthi, D. Solanki, M. J. Skoby, T. Ljubicic, H. Caines, Sudhir Raniwala, A. Quintero, M. A.C. Lamont, L-X. Han, S. Y. Noh, Haiyan Wang, F. Ding, Basanta Kumar Nandi, I. Bunzarov, V. A. Okorokov, H. Qiu, M. Tokarev, Y. Zhang, J. Engelage, Nikola Poljak, P. R. Pujahari, H. F. Chen, L. C. Bland, X. L. Wang, Y. Panebratsev, Madan M. Aggarwal, D. Grosnick, Fuqiang Wang, A. Chikanian, C-Q. Li, R. Stock, R. P. Scharenberg, Christina Markert, J. C. Dunlop, A. Sandacz, S. Margetis, J. M. Landgraf, Yu-Gang Ma, T. D. S. Stanislaus, D. Smirnov, H. S. Matis, A. Vossen, X. Dong, S. K. Pal, E. Sangaline, D. Arkhipkin, A. Hamed, S. G. Brovko, Chi Yang, Justin Stevens, M. Strikhanov, H. H. Wieman, W. W. Jacobs, E. P. Sichtermann, J. Lauret, J. Konzer, D. N. Svirida, Zubayer Ahammed, R. Lednicky, M. J. LeVine, J. Balewski, T. Tarnowsky, Rashmi Raniwala, J. Sandweiss, P. Djawotho, J. F. Ross, T. Ullrich, Stephen V. Gliske, C. M. Du, H. S. Xu, H. G. Ritter, Shaobo Zhang, K. Yip, J. S. Wang, R. R. Debbe, Q. Y. Shou, I. Sakrejda, Y. Yang, L. Yi, Nilay Shah, R. Witt, J. K. Adkins, R. Fatemi, K. Krueger, S. Mioduszewski, Jana Bielcikova, J. A. Vanfossen, P. Sorensen, Donald M. McDonald, M. Cherney, K. S. Engle, Prithwish Tribedy, B. K. Srivastava, Hua Pei, L. Didenko, J. L. Drachenberg, S. K. Gupta, Olga Evdokimov, Barbara Antonina Trzeciak, P. Huck, Anthony Robert Timmins, Jay Roberts, Adam Ryszard Kisiel, E. C. Aschenauer, H. J. Crawford, William Axel Leight, P. V. Shanmuganathan, H. W. Ke, B. Di Ruzza, L. E. Dunkelberger, A. A. Derevschikov, Zhiming Li, Qinghua Xu, Maksym Zyzak, N. Schmitz, J. C. Webb, M. R. Girard, Wei Xie, E. W. Oldag, T. S. McShane, P. Bhattarai, A. Aparin, G. M.S. Vasconcelos, Matthew Walker, Y. J. Sun, C. Dilks, S. Kabana, Y. P. Viyogi, Y. Pandit, T. J. Humanic, R. Varma, E. Shahaliev, James Prewitt Hays-Wehle, B. S. Page, D. P. Kikola, B. Stringfellow, Y. F. Wu, Zhongbin Xu, J. L. Romero, E. Finch, and M. Calderon De La Barca Sanchez
Subjects: Physics, Quantum chromodynamics, Particle physics, Negative binomial distribution, General Physics and Astronomy, Sigma, Multiplicity (mathematics), Poisson distribution, Nuclear physics, symbols.namesake, Critical point (thermodynamics), Quark–gluon plasma, symbols, Kurtosis, Nuclear Experiment
Abstract: We report the first measurements of the moments-mean (M), variance (sigma(2)), skewness (S), and kurtosis (kappa)-of the net-charge multiplicity distributions at midrapidity in Au + Au collisions at seven energies, ranging from root s(NN) = 7.7 to 200 GeV, as a part of the Beam Energy Scan program at RHIC. The moments are related to the thermodynamic susceptibilities of net charge, and are sensitive to the location of the QCD critical point. We compare the products of the moments, sigma(2)/M, S sigma, and kappa sigma(2), with the expectations from Poisson and negative binomial distributions (NBDs). The S sigma values deviate from the Poisson baseline and are close to the NBD baseline, while the kappa sigma(2) values tend to lie between the two. Within the present uncertainties, our data do not show nonmonotonic behavior as a function of collision energy. These measurements provide a valuable tool to extract the freeze-out parameters in heavy-ion collisions by comparing with theoretical models.
Published: 2014

28. Dielectron Mass Spectra fromAu+AuCollisions atsNN=200 GeV

Author: Z. Barnovska, Nasim, Michal Sumbera, S. Bültmann, Wenbin Yan, S. W. Wissink, I. Sakrejda, Stephen V. Gliske, Zhigang Xiao, Jie Zhao, S. Horvat, A. Szanto de Toledo, Nikola Poljak, J. G. Cramer, H. Qiu, M. Tokarev, N. G. Minaev, I. Koralt, T. Pawlak, M. R. Girard, B. Pawlik, Wolfgang Korsch, Y. Yang, L. Yi, W. Zha, D. M.M.D. Madagodagettige Don, C. D. Anson, H. G. Ritter, D. R. Gangadharan, A. Sarkar, T. D. S. Stanislaus, J. L. Drachenberg, A. Gibson, Anju Bhasin, Kejun Kang, L. V. Nogach, Sumit R. Das, I. K. Yoo, R. Haque, Xiaofeng Zhu, E. W. Oldag, C. E. Flores, E. G. Judd, Nilay Shah, H. H. Wieman, Bedangadas Mohanty, N. Xu, P. Filip, Olga Evdokimov, Barbara Antonina Trzeciak, Basanta Kumar Nandi, A. Lebedev, David Jonathan Hofman, M. J.M. Codrington, H. Masui, G. Van Nieuwenhuizen, S. K. Gupta, B. Haag, R. S. Longacre, A. Ogawa, H. F. Chen, Xiaofeng Luo, X. L. Wang, C. Zhong, E. C. Aschenauer, S. Margetis, V. A. Okorokov, P. Huck, F. Ding, Y. Panebratsev, Zebo Tang, Janusz Chwastowski, K. Yip, Z. H. Khan, M. Wada, L. C. Bland, P. Pile, G. D. Westfall, Jay Roberts, T. J. Humanic, A. M. Poskanzer, Z. Ye, J. W. Harris, Guo-Liang Ma, D. G. Underwood, Z. P. Zhang, Xiangming Sun, R. A.N. Oliveira, X. Huang, S. Dhamija, J. S. Wang, R. R. Debbe, C. Perkins, Y. F. Wu, A. Chikanian, A. Sandacz, S. G. Brovko, Chi Yang, Anthony Robert Timmins, A. S. Hirsch, A. Kechechyan, P. Kravtsov, A. M. Schmah, D. Grosnick, X. Dong, S. K. Pal, Justin Stevens, C. K. Riley, Adam Ryszard Kisiel, H. W. Ke, J. Takahashi, R. Varma, S. B. Nurushev, Pradip Kumar Sahu, G. Igo, J. Novak, B. Sharma, L. Kotchenda, B. Di Ruzza, J. L. Zhang, H. J. Crawford, D. N. Svirida, A. Roy, X. Li, E. Sangaline, D. Arkhipkin, B. S. Page, D. P. Kikola, S. Fazio, J. Cheng, J. Engelage, T. J. M. Symons, L. C. De Silva, J. Bouchet, Anik Gupta, K. D. Landry, K. Kauder, Y. Zawisza, F. Videbæk, A. V. Brandin, A. Hamed, J. Rusnak, G. Webb, B. Stringfellow, T. S. McShane, P. Bhattarai, Sukalyan Chattopadhyay, Y. Guo, J. K. Adkins, Jongmin Lee, R. L. Ray, J. Butterworth, K. Xin, Frank Jm Geurts, R. Fatemi, Y. Fisyak, T. P. Burton, L. Ruan, R. Witt, K. Krueger, Xiangyuan Cui, W. Christie, P. Yepes, A. Davila Leyva, Jian Deng, J. Alford, S. Mioduszewski, J. M. Landgraf, K. Oh, P. R. Pujahari, P. V. Shanmuganathan, A. Kesich, Yifei Zhang, R. Cendejas, N. K. Pruthi, D. Tlusty, T. Ljubicic, I. G. Bordyuzhin, Mirko Planinic, Haiyan Wang, J. A. Vanfossen, Z. Chang, A. H. Tang, Donald M. McDonald, Y. J. Sun, W. Guryn, H. Caines, Sudhir Raniwala, Andrey Vasiliev, J. Turnau, Prithwish Tribedy, B. K. Srivastava, M. Strikhanov, S. H. Zhang, M. K. Mustafa, G. Agakishiev, Y. Xu, D. Solanki, C. Dilks, P. Chaloupka, A. Quintero, Li-Yi Chen, G. Eppley, S. Kabana, Y. P. Viyogi, J. Fedorisin, J. Konzer, D. Cebra, T. G. Dedovich, R. N. Singaraju, Janet Elizabeth Seger, L. E. Dunkelberger, Y. Li, G. Wang, S. Trentalange, I. Bunzarov, M. Cherney, K. S. Engle, Hua Pei, M. Shao, Y. X. Pan, G. Van Buren, J. C. Dunlop, Zubayer Ahammed, J. Pluta, J. Sandweiss, Alexandre Alarcon Do Passo Suaide, R. Vertesi, M. J. Skoby, W. Li, O. Hajkova, E. P. Sichtermann, Bernd Surrow, H. Bichsel, G. Odyniec, Y. Zoulkarneeva, M. J. LeVine, F. Liu, B. Huang, Mariusz Przybycien, D. P. Mahapatra, Z. J. Sun, Rene Bellwied, Rashmi Raniwala, J. M. Nelson, Q. Y. Shou, Y. H. Zhu, Zhongbin Xu, L. M. Lima, R. E. Tribble, W. Peryt, A. A. Derevschikov, T. Ullrich, R. D. Majka, P. Seyboth, C-Q. Li, Gerald W Hoffmann, J. L. Romero, R. P. Scharenberg, Christina Markert, W. Borowski, C. M. Du, J. Schambach, N. R. Sahoo, Leszek Adamczyk, R. Derradi de Souza, H. S. Xu, Jana Bielcikova, I. Kulakov, E. Finch, P. Sorensen, A. K. Bhati, D. Keane, D. Smirnov, H. S. Matis, Lokesh Kumar, Wei Xie, A. Aparin, G. M.S. Vasconcelos, Y. Pandit, N. Schmitz, L. Didenko, E. Shahaliev, Zhiming Li, Qinghua Xu, Maksym Zyzak, Nikolai Smirnov, R. Stock, Marcelo Gameiro Munhoz, J. C. Webb, Radoslaw Antoni Kycia, W. W. Jacobs, J. Lauret, I. G. Alekseev, L. G. Efimov, T. K. Nayak, Donika Plyku, R. Lednicky, M. Calderon De La Barca Sanchez, M. A. Lisa, T. Tarnowsky, P. Djawotho, J. F. Ross, O. D. Tsai, W. B. Schmidke, M. C. Cervantes, W. Q. Shen, Xiang Sun, D. Garand, C. A. Gagliardi, Sevil Salur, Y. Wang, H. M. Spinka, A. Banerjee, M. Pachr, J. H. Thomas, H. Z. Huang, S. Vokal, U. G. Desouza, Jaroslav Bielcik, O. V. Rogachevskiy, H. J. Jang, Madan M. Aggarwal, Fuqiang Wang, J. H. Chen, S. S. Shi, G. S. Averichev, A. Vossen, J. Porter, Ivan Kisel, D. A. Morozov, Thorsten Sven Kollegger, D. Kalinkin, S. Heppelmann, L. Eun, J. B. Zhang, D. D. Koetke, J. E. Draper, S. Ramachandran, M. M. Mondal, W. J. Llope, A. Ohlson, Xuan Zhang, Hanna Paulina Zbroszczyk, D. R. Beavis, F. Zhao, M. A.C. Lamont, L-X. Han, S. Y. Noh, and Yu-Gang Ma
Subjects: Quantum chromodynamics, Physics, Particle physics, Meson, Hadron, General Physics and Astronomy, Super Proton Synchrotron, Nuclear physics, Yield (chemistry), Quark–gluon plasma, Mass spectrum, High Energy Physics::Experiment, Invariant mass, Nuclear Experiment
Abstract: We report the STAR measurements of dielectron (e(+)e(-)) production at midrapidity (|y(ee)
Published: 2014

29. 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

30. Fluctuations of charge separation perpendicular to the event plane and local parity violation insNN=200GeV Au + Au collisions at the BNL Relativistic Heavy Ion Collider

Author: P. Seyboth, H. Bichsel, Leszek Adamczyk, R. Derradi de Souza, G. Odyniec, R. A.N. Oliveira, C. K. Riley, Y. Fisyak, K. Oh, T. S. McShane, Y. Zoulkarneeva, P. Bhattarai, Sergey Voloshin, Z. J. Sun, Amitava Roy, Y. F. Wu, X. L. Wang, C. Zhong, Q. Wang, E. C. Aschenauer, N. R. Sahoo, T. R. Schuster, O. D. Tsai, T. P. Burton, H. Z. Huang, S. Vokal, S. Margetis, M. Elnimr, M. C. Cervantes, W. Q. Shen, K. Yip, X. Dong, C. D. Anson, L. Kotchenda, Matthew Walker, Madan M. Aggarwal, J. Engelage, J. Porter, S. K. Pal, Justin Stevens, J. W. Harris, Anik Gupta, W. J. Llope, L. C. Bland, J. S. Wang, P. R. Pujahari, C. B. Powell, Jongmin Lee, D. Garand, A. Dion, Y. J. Sun, Sevil Salur, Y. Wang, R. L. Ray, J. Alford, R. Vertesi, J. L. Romero, R. R. Debbe, Y. Zawisza, Fuqiang Wang, Frank Jm Geurts, Jian Deng, D. Tlusty, C. Dilks, Y. Xu, J. Kiryluk, J. H. Chen, Xiaofeng Luo, P. Chaloupka, L. H. Tarini, Z. J. Xu, G. Agakishiev, T. Ljubicic, I. Koralt, Bedangadas Mohanty, R. S. Longacre, I. G. Bordyuzhin, Mirko Planinic, G. Eppley, W. Guryn, D. Cebra, A. Sandacz, H. Caines, Sudhir Raniwala, E. Finch, S. Trentalange, J. K. Adkins, S. Kabana, A. K. Bhati, D. Keane, Y. P. Viyogi, N. Xu, P. Filip, A. Ohlson, F. Liu, Nikolai Smirnov, R. Fatemi, Michael Joseph Betancourt, R. Stock, A. Chikanian, R. Haque, J. M. Landgraf, Guo-Liang Ma, E. P. Sichtermann, Kejun Kang, L. V. Nogach, Mariusz Przybycien, Sumit R. Das, O. G. Grebenyuk, L. G. Efimov, S. G. Brovko, Chi Yang, A. M. Poskanzer, J. Balewski, Rashmi Raniwala, T. K. Nayak, Claude Andre Pruneau, P. Yepes, A. Davila Leyva, M. Strikhanov, Thorsten Sven Kollegger, F. Ding, J. Konzer, G. Van Nieuwenhuizen, J. Fedorisin, K. Krueger, P. Chung, E. Sangaline, D. Arkhipkin, A. Hamed, J. G. Cramer, M. C. Suarez, P. Pile, G. D. Westfall, Y. Panebratsev, D. Grosnick, O. Hajkova, D. N. Svirida, T. Ullrich, S. Heppelmann, A. Kechechyan, Marcelo Gameiro Munhoz, R. G. Fersch, M. A.C. Lamont, J. Pluta, Wei Xie, S. H. Zhang, Z. P. Zhang, L-X. Han, B. Haag, M. K. Mustafa, Y. Li, J. A. Vanfossen, Pradip Kumar Sahu, L. Eun, A. S. Hirsch, A. H. Tang, J. Sandweiss, R. D. Majka, P. Kravtsov, A. Aparin, C. M. Du, H. S. Xu, Radoslaw Antoni Kycia, Alexandre Alarcon Do Passo Suaide, W. Li, Nasim, D. P. Mahapatra, I. G. Alekseev, Donika Plyku, M. A. Lisa, M. Wada, I. Bunzarov, G. M.S. Vasconcelos, C-Q. Li, Y. Pandit, Jana Bielcikova, Z. Chang, Li-Yi Chen, G. Igo, J. Novak, B. Sharma, B. Pawlik, J. Bouchet, J. B. Zhang, B. Huang, A. M. Schmah, Jie Zhao, Yu-Gang Ma, S. Horvat, A. Szanto de Toledo, N. Schmitz, D. Solanki, Zebo Tang, Janusz Chwastowski, K. D. Landry, A. Vossen, K. Kauder, H. Qiu, M. Tokarev, D. D. Koetke, J. E. Draper, S. Ramachandran, E. W. Oldag, J. Y. Chen, W. Borowski, J. Schambach, M. M. Mondal, David Jonathan Hofman, E. Shahaliev, P. Sorensen, B. Schmidke, J. Butterworth, Rene Bellwied, M. J.M. Codrington, H. Masui, R. P. Scharenberg, Christina Markert, D. Smirnov, H. S. Matis, M. Naglis, A. Gibson, Anju Bhasin, Xuan Zhang, I. Sakrejda, D. M.M.D. Madagodagettige Don, D. R. Gangadharan, Basanta Kumar Nandi, M. Cherney, K. S. Engle, Lokesh Kumar, Hua Pei, Y. Yang, S. Dhamija, L. Yi, M. K. Mitrovski, Z. Barnovska, C. Perkins, S. LaPointe, T. Pawlak, H. M. Spinka, Y. H. Zhu, I. Kisel, M. J. Skoby, T. J. Humanic, Hanna Paulina Zbroszczyk, L. M. Lima, R. E. Tribble, Y. Mohammed, W. W. Jacobs, A. Banerjee, Michal Sumbera, D. R. Beavis, Nilay Shah, J. Turnau, W. Zha, T. D. S. Stanislaus, Jorn Henning Putschke, Q. H. Xu, A. Sarkar, J. H. Thomas, V. A. Okorokov, H. H. Wieman, S. Bültmann, U. G. Desouza, J. Lauret, A. V. Brandin, Russell Richard Betts, T. G. Dedovich, Zhigang Xiao, Yicheng Guo, R. Varma, M. Sharma, F. Zhao, Jaroslav Bielcik, James Prewitt Hays-Wehle, B. S. Page, D. G. Underwood, S. K. Gupta, Gerald W Hoffmann, A. Lebedev, S. W. Wissink, L. Didenko, Y. Zhang, K. Xin, R. Lednicky, D. P. Kikola, Nikola Poljak, J. Cheng, T. J. M. Symons, B. Stringfellow, L. C. De Silva, Elena Bruna, J. Takahashi, X. Li, Zhiming Li, T. Tarnowsky, P. Djawotho, R. N. Singaraju, J. Rusnak, G. S. Averichev, O. V. Rogachevskiy, P. Huck, M. Calderon De La Barca Sanchez, A. Kesich, F. Videbæk, L. Ruan, G. Webb, J. F. Ross, R. Cendejas, I. K. Yoo, Xiangming Sun, R. Corliss, W. Yan, Sukalyan Chattopadhyay, M. Shao, Y. X. Pan, G. Van Buren, Anthony Robert Timmins, J. C. Webb, Adam Ryszard Kisiel, C. E. Flores, E. G. Judd, S. S. Shi, Chitrasen Jena, H. J. Crawford, W. Xu, M. Zyzak, Bernd Surrow, Wolfgang Korsch, J. M. Nelson, Xiaofeng Zhu, W. Peryt, S. Fazio, A. Ogawa, H. F. Chen, C. A. Gagliardi, I. Kulakov, M. Pachr, N. K. Pruthi, William Axel Leight, Haiyan Wang, L. E. Dunkelberger, D. L. Olson, Xiangyuan Cui, W. Christie, Janet Elizabeth Seger, Stephen V. Gliske, H. G. Ritter, J. L. Drachenberg, Olga Evdokimov, Barbara Antonina Trzeciak, Jay Roberts, H. W. Ke, B. Di Ruzza, R. Witt, S. Mioduszewski, Donald M. McDonald, Prithwish Tribedy, B. K. Srivastava, J. C. Dunlop, Zubayer Ahammed, M. J. LeVine, Q. Y. Shou, and G. Wang
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Charge separation, Collective motion, Parity (physics), 01 natural sciences, Nuclear physics, 0103 physical sciences, Perpendicular, Momentum conservation, 010306 general physics, Relativistic Heavy Ion Collider, STAR detector
Abstract: Previous experimental results based on data (∼15×106 events) collected by the STAR detector at the BNL Relativistic Heavy Ion Collider suggest event-by-event charge-separation fluctuations perpendicular to the event plane in noncentral heavy-ion collisions. Here we present the correlator previously used split into its two component parts to reveal correlations parallel and perpendicular to the event plane. The results are from a high-statistics 200-GeV Au + Au collisions data set (57×106 events) collected by the STAR experiment. We explicitly count units of charge separation from which we find clear evidence for more charge-separation fluctuations perpendicular than parallel to the event plane. We also employ a modified correlator to study the possible P-even background in same- and opposite-charge correlations, and find that the P-even background may largely be explained by momentum conservation and collective motion. © 2013 American Physical Society.
Published: 2013

31. Measurement of the Proton Structure Function F2 at Low Q2 and Very Low x with the ZEUS Beam Pipe Calorimeter at HERA

Author: Bernd Surrow
Subjects: Nuclear physics, Quantum chromodynamics, Physics, Particle physics, ZEUS (particle detector), Neutral current, Proton, Scattering, Perturbative QCD, High Energy Physics::Experiment, HERA, Calorimeter
Abstract: Results on measurements of the proton structure function from the two HERA experiments H1 and ZEUS in 1994 show that perturbative QCD (pQCD) allows to describe the observed rapid rise of with decreasing x down to Q2 = 1.5GeV2. Whereas the pQCD region exhibits a strong rise of σγ*p tot with increasing W2, the total cross-section for real photon-proton scattering σγp tot shows only a modest rise with W2. The proton structure function F2 and the total virtual photon-proton (γ*p) cross-section σγ*p tot have been measured in inelastic neutral current scattering, e+p → e+X, at HERA in the previously unexplored transition region of non-perturbative to perturbative QCD at low Q2. To study this kinematic region, a small electromagnetic Beam Pipe Calorimeter (BPC) has been designed, constructed and installed in the ZEUS experiment in 1995. The accuracy of the measurement of F2 in this kinematic region relies mainly on a precise energy calibration and detector alignment. An energy calibration with a precision of 0.5% and a detector alignment of 0.5mm have been achieved. Results on a measurement of F2 and σγp tot are obtained for 0.11 ≤ Q2≤ 0.65 GeV2 and 1.7 ċ 10−6 ≤ x ≤ 6.0 ċ 10−5, corresponding to a range in the γ*p center-of-mass energy of 104 ≤ W ≤ 251 GeV. The results on F2 and σγp tot indicate a smooth transition between the pQCD region and the photoproduction region. A detailed phenomenological analysis as well as a QCD analysis has been carried out to investigate the limitations of a non-perturbative as well as a perturbative QCD description.
Published: 2000

32. Measurement ofJ/ψAzimuthal Anisotropy inAu+AuCollisions atsNN=200 GeV

Author: Zubayer Ahammed, M. J. LeVine, B. Pawlik, M. Naglis, Q. Y. Shou, Xiangming Sun, P. Seyboth, M. Zyzak, H. Z. Huang, Leszek Adamczyk, R. Derradi de Souza, A. Gibson, Y. F. Wu, Madan M. Aggarwal, Fuqiang Wang, J. L. Drachenberg, Olga Evdokimov, Barbara Antonina Trzeciak, S. Vokal, N. K. Pruthi, Basanta Kumar Nandi, M. Shao, Y. X. Pan, G. Van Buren, F. Videbæk, G. Webb, Jay Roberts, A. Dion, K. Yip, N. Xu, S. S. Shi, A. Vossen, Sukalyan Chattopadhyay, H. W. Ke, J. S. Wang, P. Filip, B. Di Ruzza, R. R. Debbe, J. L. Romero, J. Kiryluk, J. H. Chen, Chitrasen Jena, P. Pile, E. Finch, I. Kisel, O. D. Tsai, G. Wang, G. D. Westfall, Y. P. Lu, J. M. Nelson, M. Elnimr, M. C. Cervantes, Vitaly Okorokov, Bernd Surrow, Jorn Henning Putschke, A. V. Brandin, C. D. Anson, Thorsten Sven Kollegger, W. Peryt, J. K. Adkins, W. J. Llope, P. Chung, K. Xin, A. Ohlson, D. Garand, R. Fatemi, Michael Joseph Betancourt, Z. J. Sun, S. Heppelmann, Wei Xie, D. Solanki, J. Engelage, G. Eppley, A. Aparin, G. M.S. Vasconcelos, A. M. Poskanzer, B. Schmidke, K. Krueger, L. Eun, David Jonathan Hofman, T. P. Burton, M. J.M. Codrington, H. Masui, C. A. Gagliardi, J. A. Vanfossen, J. Pluta, Y. Pandit, J. B. Zhang, D. D. Koetke, J. E. Draper, R. Witt, A. Kechechyan, A. Kesich, M. J. Skoby, R. Cendejas, R. A.N. Oliveira, M. Pachr, C. K. Riley, S. Mioduszewski, N. Schmitz, X. Li, J. M. Landgraf, S. Ramachandran, L. Kotchenda, Sevil Salur, Y. Wang, Donald M. McDonald, R. S. Longacre, Pradip Kumar Sahu, W. Li, Elena Bruna, B. Huang, E. Shahaliev, Prithwish Tribedy, B. K. Srivastava, M. M. Mondal, J. Takahashi, M. Cherney, Lokesh Kumar, M. Strikhanov, J. Konzer, Rene Bellwied, D. Tlusty, I. G. Bordyuzhin, Mirko Planinic, Y. H. Zhu, L. M. Lima, I. Sakrejda, R. E. Tribble, S. Fazio, J. Rusnak, T. J. Humanic, Jize Zhao, I. Kulakov, Bedangadas Mohanty, Xiaofeng Luo, Y. Xu, P. Chaloupka, Guo-Liang Ma, Gerald W Hoffmann, H. Qiu, J. Sandweiss, Nasim, M. Tokarev, Jaroslav Bielcik, Y. Fisyak, G. Igo, J. Novak, Stephen V. Gliske, B. Sharma, J. Bouchet, Z. J. Xu, C. A. Whitten, A. K. Bhati, D. Keane, Haiyan Wang, S. Trentalange, Y. Yang, Z. P. Zhang, Nikolai Smirnov, R. Stock, A. S. Hirsch, L. Ruan, K. D. Landry, K. Kauder, J. Butterworth, F. Liu, K. Oh, Mariusz Przybycien, T. D. S. Stanislaus, L. G. Efimov, T. K. Nayak, P. Kravtsov, A. M. Schmah, D. M.M.D. Madagodagettige Don, D. R. Gangadharan, M. K. Mustafa, L. Yi, S. LaPointe, Nilay Shah, H. G. Ritter, E. Flores, F. Ding, R. Varma, A. Chikanian, R. G. Fersch, X. Z. Cai, H. H. Wieman, Jian Deng, Y. Panebratsev, S. K. Gupta, D. Grosnick, Xuan Zhang, Hanna Paulina Zbroszczyk, Y. Li, R. Corliss, James Prewitt Hays-Wehle, B. S. Page, D. P. Kikola, O. Hajkova, X. L. Wang, G. Agakishiev, D. P. Mahapatra, Z. Chang, O. V. Rogachevskiy, D. R. Beavis, L. C. Bland, B. Stringfellow, F. Zhao, Zhiming Li, P. Huck, C. Zhong, E. C. Aschenauer, A. Sandacz, M. Wada, A. Luszczak, Li-Yi Chen, Q. H. Xu, J. Turnau, D. Cebra, M. A.C. Lamont, Anthony Robert Timmins, Adam Ryszard Kisiel, L-X. Han, S. G. Brovko, R. D. Majka, R. N. Singaraju, S. Margetis, L. Xue, J. G. Cramer, Sergey Voloshin, Zhigang Xiao, H. J. Crawford, M. Sharma, E. Sangaline, D. Arkhipkin, A. Hamed, M. C. Suarez, D. N. Svirida, W. Xu, Wolfgang Korsch, J. Y. Chen, W. Borowski, Z. Barnovska, Xiaofeng Zhu, E. W. Oldag, T. S. McShane, P. Bhattarai, J. Schambach, X. Dong, Michal Sumbera, A. A. P. Suaide, Xiangyuan Cui, W. Christie, S. K. Pal, Justin Stevens, J. C. Webb, Y. J. Sun, A. Ogawa, H. F. Chen, S. Kabana, Marcelo Gameiro Munhoz, Y. P. Viyogi, S. Bültmann, M. Zawisza, H. M. Spinka, S. W. Wissink, C-Q. Li, T. G. Dedovich, Y. Zhang, R. P. Scharenberg, Christina Markert, A. Banerjee, Nikola Poljak, E. P. Sichtermann, J. Porter, D. Smirnov, H. S. Matis, I. G. Alekseev, L. H. Tarini, M. A. Lisa, W. W. Jacobs, I. K. Yoo, J. Lauret, H. Pei, J. Balewski, Rashmi Raniwala, Janet Elizabeth Seger, R. Lednicky, Claude Andre Pruneau, T. Tarnowsky, P. Djawotho, E. G. Judd, H. Bichsel, G. Odyniec, Anju Bhasin, Y. Zoulkarneeva, J. H. Thomas, U. G. Desouza, J. F. Ross, T. Ullrich, Q. Wang, Jana Bielcikova, N. R. Sahoo, A. Lebedev, T. R. Schuster, G. S. Averichev, P. R. Pujahari, C. B. Powell, I. Koralt, Kejun Kang, L. V. Nogach, C. M. Du, H. S. Xu, Sumit R. Das, P. Sorensen, G. Van Nieuwenhuizen, Jongmin Lee, R. L. Ray, T. Ljubicic, L. Didenko, H. Caines, Sudhir Raniwala, William Axel Leight, Yinina Ma, S. R. Klein, L. E. Dunkelberger, D. L. Olson, Anik Gupta, Frank Jm Geurts, Jifa Tian, S. H. Zhang, B. Haag, Zebo Tang, Janusz Chwastowski, S. Dhamija, C. Perkins, J. W. Harris, P. Yepes, A. Davila Leyva, A. H. Tang, I. Bunzarov, M. Calderon De La Barca Sanchez, J. Alford, W. Guryn, O. G. Grebenyuk, J. Fedorisin, Russell Richard Betts, D. G. Underwood, J. Cheng, T. J. M. Symons, L. C. De Silva, S. Horvat, A. Szanto de Toledo, J. Kapitan, M. K. Mitrovski, T. Pawlak, Y. Mohammed, A. Sarkar, and J. C. Dunlop
Subjects: Coalescence (physics), Physics, Particle physics, 010308 nuclear & particles physics, Elliptic flow, General Physics and Astronomy, Elementary particle, 01 natural sciences, Charm quark, Nuclear physics, Transverse plane, 0103 physical sciences, Quark–gluon plasma, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider, Anisotropy
Abstract: The measurement of J/psi azimuthal anisotropy is presented as a function of transverse momentum for different centralities in Au + Au collisions at root s(NN) = 200 GeV. The measured J/psi elliptic flow is consistent with zero within errors for transverse momentum between 2 and 10 GeV/c. Our measurement suggests that J/psi particles with relatively large transverse momenta are not dominantly produced by coalescence from thermalized charm quarks, when comparing to model calculations.
Published: 2013

33. 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

34. 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

35. 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

36. 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

37. Recent STAR results and future prospects of W^-(+) boson production in polarized p+p collisions at RHIC

Author: Bernd Surrow
Subjects: Physics, Particle physics, Production (computer science), Star (graph theory)
Published: 2011

38. 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

39. 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

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

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

41. Exploring the gluon polarization with inclusive and correlation measurements in polarized proton-proton collisions at RHIC

Author: Bernd Surrow
Subjects: Physics, Particle physics, Polarization (waves), Gluon
Published: 2010

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

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

43. Observation of an Antimatter Hypernucleus

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

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

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

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

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

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

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

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

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

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

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

49. Observation of Two-Source Interference in the Photoproduction Reaction AuAu -> AuAu rho(0)

Author: R. P. Redwine, Raimond Snellings, Xiangming Sun, C. Li, B. Erazmus, S. Q. Zhang, A. Lebedev, B. D. Anderson, N. K. Pruthi, Guo-Liang Ma, J. Ulery, G. Eppley, B. Haag, J. Pluta, I. Selyuzhenkov, M. Botje, M. Pachr, Vitaly Okorokov, R. E. Tribble, A. Szanto de Toledo, Gerald W Hoffmann, M. Calderon De La Barca Sanchez, H. G. Ritter, D. Tlusty, Mirko Planinic, Ross Milner, Neeraj Gupta, D. Cebra, J. Engelage, Y. Fisyak, J. Kapitan, A. Chikanian, S. M. Dogra, Zebo Tang, V. N. Tram, C. Nepali, L. Kotchenda, O. Catu, S. Trentalange, Jorn Henning Putschke, O. Barannikova, R. Bellwied, V. Fine, L. Gaillard, A. S. Hirsch, J. C. Webb, L. K. Mangotra, T. Pawlak, A. Kocoloski, M. Estienne, H. Z. Huang, S. Vokal, N. Xu, P. Filip, A. V. Brandin, Bernd Surrow, E. P. Sichtermann, H. Okada, L. C. Bland, A. M. Vander Molen, S. Dash, Z. Chajecki, H. Bichsel, G. Odyniec, Y. Zoulkarneeva, R. Manweiler, R. Witt, R. Fatemi, Michael Joseph Betancourt, E. Hjort, Hongfang Liu, B. Grube, M. DePhillips, Michal Sumbera, K. Krueger, D. Arkhipkin, A. Hamed, P. Kravtsov, Sergey Voloshin, Christine Nattrass, Y. Bai, Y. N. Gorbunov, C. Perkins, A. M. Poskanzer, G. D. Westfall, David Jonathan Hofman, Pawan Kumar Netrakanti, J. W. Harris, L. Liu, C. L. Jones, S. Mioduszewski, Premomoy Ghosh, J. M. Landgraf, David Lynn, Q. Wang, M. J. Russcher, J. H. Thomas, D. Kettler, M. Strikhanov, J. A. Vanfossen, J. Balewski, A. Iordanova, S. E. Vigdor, Christian Claude Kuhn, M. C. Suarez, Sergey Timoshenko, S. W. Wissink, Rashmi Raniwala, Claude Andre Pruneau, F. Liu, Petr Jákl, J. Sowinski, Y. Zhang, V. Yu Khodyrev, T. Peitzmann, A. Kechechyan, Andre Mischke, C. A. Gagliardi, J. Kiryluk, C. Roy, Nikola Poljak, Ki-Seok Choi, Z. Xu, G. Lin, G. S. Averichev, W. Guryn, T. Ullrich, J. Callner, Anthony R. Timmins, R. N. Singaraju, B. K. Srivastava, A. Stadnik, Peter Martin Jacobs, J. Sandweiss, I. M. Vasilevski, S. Bueltmann, Anik Gupta, M. Krus, R. Cendejas, A. P. Meschanin, W. He, O. G. Grebenyuk, R. Zoulkarneev, S. M. Guertin, D. A. Morozov, P. Yepes, V. Emelianov, A. K. Bhati, M. Heinz, Lee Stuart Barnby, D. Keane, M. Cherney, J. Fedorisin, Alexandre Alarcon Do Passo Suaide, D. Thein, Thomas Michael Cormier, A. H. Tang, H. Zhang, Jaroslav Bielcik, Jing Zhou, M. J. Skoby, K. Kajimoto, J. Baudot, W. Zhan, L. Eun, Lokesh Kumar, A. G. Knospe, E. Elhalhuli, R. D. Majka, C. De Silva, A. Ridiger, D. P. Mahapatra, Wei Xie, S. Bhardwaj, Nikolai Smirnov, M. S. Daugherity, M. Sarsour, Russell Richard Betts, R. L. Ray, R. S. Hollis, Jifa Tian, J. Takahashi, Xuan Wang, J. Joseph, Boris Hippolyte, J. Y. Chen, I. Sakrejda, A. Ogawa, J. L. Drachenberg, S. Margetis, R. F. Clarke, J. Schambach, J. Mitchell, K. Kang, L. G. Efimov, Elena Bruna, M. R. Dutta Mazumdar, D. G. Underwood, T. P. Burton, D. Staszak, G. M.S. Vasconcelos, M. Kopytine, S. Heppelmann, H. F. Chen, Thomas A. Trainor, W. R. Edwards, S. U. Chung, I. K. Yoo, S. S. Shi, Marcelo Gameiro Munhoz, D. J. Prindle, O. V. Rogachevskiy, S. B. Nurushev, W. Christie, Lijuan Ruan, M. Tokarev, T. Ljubicic, W. T. Waggoner, P. Chaloupka, R. S. Longacre, Y. Pandit, C-H. Lee, T. K. Nayak, M. Sharma, J. X. Zuo, W. M. Zhang, Andrey Vasiliev, H. Caines, Sudhir Raniwala, N. Schmitz, R. P. Scharenberg, Christina Markert, M. Zawisza, H. M. Spinka, A. Feng, M. Shao, D. D. Koetke, W. A. Love, E. Shahaliev, H. S. Matis, F. Du, Debasish Das, Raghunath Sahoo, D. R. Gangadharan, N. G. Minaev, T. J. Hallman, J. Cheng, T. J. M. Symons, Jay Roberts, Janet Elizabeth Seger, J. E. Draper, A. M. Hoffman, E. G. Judd, M. A.C. Lamont, V. Rykov, L. V. Nogach, G. Igo, V. Ghazikhanian, T. D. S. Stanislaus, W. W. Jacobs, M. A. Lisa, M. J. Ng, Y. Panebratsev, D. Grosnick, V. Kouchpil, V. I. Kravtsov, Yuanfang Wu, X. L. Wang, J. Bouchet, S. LaPointe, N. Li, J. P. Coffin, C. Zhong, J. Lauret, F. Videbæk, Bedangadas Mohanty, H. H. Wieman, P. Kurnadi, Marek Bombara, A. Gordon, R. Lednicky, P. Djawotho, Yinina Ma, M. van Leeuwen, X. Dong, Madan M. Aggarwal, Sukalyan Chattopadhyay, Fuqiang Wang, Zhenyu Zhang, M. R. Cosentino, J. L. Romero, S. K. Pal, Basanta Kumar Nandi, C. A. Whitten, Feng Jin, Andrew Rose, M. S. Ganti, Rolf K. Reed, B. Biritz, M. Wada, Y. Zhao, J. H. Chen, M. Bystersky, R. Corliss, Ermes Braidot, J. S. Wang, Yong Xu, Morton Kaplan, F. Benedosso, B. E. Bonner, X. Z. Cai, O. D. Tsai, J. C. Dunlop, E. Finch, S. J. Lindenbaum, Adam Ryszard Kisiel, M. Elnimr, M. C. Cervantes, Y. P. Lu, V. Perevoztchikov, G. Van Buren, H. J. Crawford, Zubayer Ahammed, M. J. LeVine, P. Fachini, K. S.F.F. Guimaraes, T. G. Dedovich, T. W. Ludlam, J. M. Nelson, Frank Simon, T. Sakuma, William Axel Leight, S. C. Phatak, Sevil Salur, Y. Wang, Yan Li, W. Peryt, G. Wang, S. R. Klein, T. Tarnowsky, N. L. Subba, P. Seyboth, E. J. Garcia-Solis, D. L. Olson, R. Derradi de Souza, B. I. Abelev, A. A. Derevschikov, A. L. Trattner, M. J. M. Codrington, Jana Bielcikova, A. Shabetai, J. G. Cramer, P. Sorensen, X. H. Shi, Q. H. Xu, Z. J. Sun, Peter Graham Jones, L. Didenko, T. S. McShane, S. Baumgart, Matthew Walker, Y. J. Sun, S. Kabana, Y. P. Viyogi, T. J. Humanic, O. I. Mall, Qian Yue, R. Varma, Yu A. Matulenko, B. S. Page, D. P. Kikola, B. Stringfellow, B. V.K.S. Potukuchi, W. J. Llope, Jie Liu, Hanna Paulina Zbroszczyk, D. R. Beavis, and Anju Bhasin
Subjects: Particle physics, Photon, Quantum decoherence, Nuclear Theory, General Physics and Astronomy, 01 natural sciences, Nuclear physics, Pion, 0103 physical sciences, Colliders, 010306 general physics, Wave function, Nuclear Experiment, Physics, 010308 nuclear & particles physics, Heavy-Ion Collisions, NATURAL SCIENCES. Physics, PRIRODNE ZNANOSTI. Fizika, Amplitude, Time Projection Chamber, High Energy Physics::Experiment, Impact parameter, Wave function collapse, Nucleon, ultra-peripheral relativistic heavy-ion collisions
Abstract: In ultra-peripheral relativistic heavy-ion collisions, a photon from the electromagnetic field of one nucleus can fluctuate to a quark-antiquark pair and scatter from the other nucleus, emerging as a $\rho^0$. The $\rho^0$ production occurs in two well-separated (median impact parameters of 20 and 40 fermi for the cases considered here) nuclei, so the system forms a 2-source interferometer. At low transverse momenta, the two amplitudes interfere destructively, suppressing $\rho^0$ production. Since the $\rho^0$ decay before the production amplitudes from the two sources can overlap, the two-pion system can only be described with an entangled non-local wave function, and is thus an example of the Einstein-Podolsky-Rosen paradox. We observe this suppression in 200 GeV per nucleon-pair gold-gold collisions. The interference is $87% \pm 5% {; ; \rm (stat.)}; ; \pm 8%$ (syst.) of the expected level. This translates into a limit on decoherence due to wave function collapse or other factors, of 23% at the 90% confidence level.
Published: 2009

50. Exploring the Gluon Polarization with Inclusive and Correlation Measurements at RHIC

Author: Bernd Surrow
Subjects: Physics, Particle physics, Polarization (waves), Gluon
Published: 2009

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