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Forward Neutral-Pion Transverse Single-Spin Asymmetries in p+p Collisions at √s =200 Ge V

Abelev, B. I. and Aggarwal, M. M. and Ahammed, Z. and Anderson, B. D. and Arkhipkin, D. and Averichev, G. S. and Bai, Y. and Balewski, J. and Barannikova, O. and Barnby, L. S. and Baudot, J. and Baumgart, S. and Beavis, D. R. and Bellwied, R. and Benedosso, F. and Betts, R. R. and Bhardwaj, S. and Bhasin, A. and Bhati, A. K. and Bichsel, H. and Bielcik, J. and Bielcikova, J. and Bland, L. C. and Blyth, S-L. and Bombara, M. and Bonner, B. E. and Botje, M. and Bouchet, J. and Braidot, E. and Brandin, A. V. and Bueltmann, S. and Burton, T. P. and Bystersky, M. and Cai, X. Z. and Caines, H. and Calderόn de la Barca Sánchez, M. and Callner, J. and Catu, O. and Cebra, D. and Cervantes, M. C. and Chajecki, Z. and Chaloupka, P. and Chattopadhyay, S. and Chen, H. F. and Chen, J. H. and Chen, J. Y. and Cheng, J. and Cherney, M. and Chikanian, A. and Choi, K. E. and Christie, W. and Chung, S. U. and Clarke, R. F. and Codrington, M. J. M. and Coffin, J. P. and Cormier, T. M. and Cosentino, M. R. and Cramer, J. G. and Crawford, H. J. and Das, D. and Dash, S. and Daugherity, M. and de-Moura, M. M. and Dedovich, T. G. and DePhillips, M. and Derevschikov, A. A. and Derradi-de-Souza, R. and Didenko, L. and Dietel, T. and Djawotho, P. and Dogra, S. M. and Dong, X. and Drachenberg, J. L. and Draper, J. E. and Du, F. and Dunlop, J. C. and Dutta-Mazumdar , M. R. and Edwards, W. R. and Efimov, L. G. and Elhalhuli, E. and Emelianov, V. and Engelage, J. and Eppley, G. and Erazmus, B. and Estienne, M. and Eun, L. and Fachini, P. and Fatemi, R. and Fedorisin, J. and Feng, A. and Filip, P. and Finch, E. and Fine, V. and Fisyak, Y. and Fu, J. and Gagliardi, C. A. and Gaillard, L. and Ganti, M. S. and Garcia-Solis, E. and Ghazikhanian, V. and Ghosh, P. and Gorbunov, Y. N. and Gordon, A. and Gos, H. and Grebenyuk, O. and Grosnick, D. and Grube, B. and Guertin, S. M. and Guimaraes , K. S. F. F. and Gupta, A. and Gupta, N. and Guryn, W. and Haag, B. and Hallman, T. J. and Hamed, A. and Harris, J. W. and He, W. and Heinz, M. and Henry, T. W. and Heppelmann, S. and Hippolyte, B. and Hirsch, A. and Hjort, E. and Hoffman, A. M. and Hoffmann, G. W. and Hofman, D. J. and Hollis, R. S. and Horner, M. J. and Huang, H. Z. and Hughes, E. W. and Humanic, T. J. and Igo, G. and Iordanova, A. and Jacobs, P. and Jacobs, W. W. and Jakl, P. and Jin, F. and Jones, P. G. and Judd, E. G. and Kabana, S. and Kajimoto, K. and Kang, K. and Kapitan, J. and Kaplan, M. and Keane, D. and Kechechyan, A. and Kettler, D. and Khodyrev, V. Yu. and Kiryluk, J. and Kisiel, A. and Klein, S. R. and Knospe, A. G. and Kocoloski, A. and Koetke, D. D. and Kollegger, T. and Kopytine, M. and Kotchenda, L. and Kouchpil, V. and Kowalik, K. L. and Kravtsov, P. and Kravtsov, V. I. and Krueger, K. and Kuhn, C. and Kumar, A. and Kurnadi, P. and Lamont, M. A. C. and Landgraf, J. M. and Langdon, J. and Lange, S. and LaPointe, S. and Laue, F. and Lauret, J. and Lebedev, A. and Lednicky, R. and Lee, C-H. and LeVine, M. J. and Li, C. and Li, Q. and Li, Y. and Lin, G. and Lin, X. and Lindenbaum, S. J. and Lisa, M. A. and Liu, F. and Liu, H. and Liu, J. and Liu, L. and Ljubicic, T. and Llope, W. J. and Longacre, R. S. and Love, W. A. and Lu, Y. and Ludlam, T. and Lynn, D. and Ma, G. L. and Ma, J. G. and Ma, Y. G. and Mahapatra, D. P. and Majka, R. and Mangotra, L. K. and Manweiler, R. and Margetis, S. and Markert, C. and Matis, H. S. and Matulenko, Yu. A. and McShane, T. S. and Meschanin, A. and Millane, J. and Miller, C. and Miller, M. L. and Minaev, N. G. and Mioduszewski, S. and Mischke, A. and Mitchell, J. and Mohanty, B. and Morozov, D. A. and Munhoz, M. G. and Nandi, B. K. and Nattrass, C. and Nayak, T. K. and Nelson, J. M. and Nepali, C. and Netrakanti, P. K. and Ng, M. J. and Nogach, L. V. and Nurushev, S. B. and Odyniec, G. and Ogawa, A. and Okada, H. and Okorokov, V. and Olson, D. and Pachr, M. and Pal, S. K. and Panebratsev, Y. and Pavlinov, A. I. and Pawlak, T. and Peitzmann, T. and Perevoztchikov, V. and Perkins, C. and Peryt, W. and Phatak, S. C. and Planinic, M. and Pluta, J. and Poljak, N. and Porile, N. and Poskanzer, A. M. and Potekhin, M. and Potukuchi , B. V. K. S. and Prindle, D. and Pruneau, C. and Pruthi, N. K. and Putschke, J. and Qattan, I. A. and Rakness, G. and Raniwala, R. and Raniwala, S. and Ray, R. L. and Relyea, D. and Ridiger, A. and Ritter, H. G. and Roberts, J. B. and Rogachevskiy, O. V. and Romero, J. L. and Rose, A. and Roy, C. and Ruan, L. and Russcher, M. J. and Rykov, V. and Sahoo, R. and Sakrejda, I. and Sakuma, T. and Salur, S. and Sandweiss, J. and Sarsour, M. and Schambach, J. and Scharenberg, R. P. and Schmitz, N. and Seger, J. and Selyuzhenkov, I. and Seyboth, P. and Shabetai, A. and Shahaliev, E. and Shao, M. and Sharma, M. and Shi, X-H. and Sichtermann, E. P. and Simon, F. and Singaraju, R. N. and Skoby, M. J. and Smirnov, N. and Snellings, R. and Sorensen, P. and Sowinski, J. and Speltz, J. and Spinka, H. M. and Srivastava, B. and Stadnik, A. and Stanislaus, T. D. S. and Staszak, D. and Stock, R. and Strikhanov, M. and Stringfellow, B. and Suaide, A. A. P. and Suarez, M. C. and Subba, N. L. and Sumbera, M. and Sun, X. M. and Sun, Z. and Surrow, B. and Symons, T. J. M. and Szanto-de-Toledo , A. and Takahashi, J. and Tang, A. H. and Tang, Z. and Tarnowsky, T. and Tatarowicz, J and Thein, D. and Thomas, J. H. and Tian, J. and Timmins, A. R. and Timoshenko, S. and Tokarev, M. and Trainor, T. A. and Tram, V. N. and Trattner, A. L. and Trentalange, S. and Tribble, R. E. and Tsai, O. D. and Ulery, J. and Ullrich, T. and Underwood, D. G. and Van-Buren, G. and van-der-Kolk, N. and van-Leeuwen, M. and Vander-Molen, A. M. and Varma, R. and Vasconcelos, G. M. S. and Vasilevski, I. M. and Vasiliev, A. N. and Vernet, R. and Videbaek, F. and Vigdor, S. E. and Viyogi, Y. P. and Vokal, S. and Voloshin, S. A. and Wada, M. and Waggoner, W. T. and Wang, F. and Wang, G. and Wang, J. S. and Wang, Q. and Wang, X. and Wang, X. L. and Wang, Y. and Webb, J. C. and Westfall, G. D. and Whitten, C., Jr. and Wieman, H. and Wissink, S. W. and Witt, R. and Wu, J. and Wu, Y. and Wu, N. and Xu, Q. H. and Xu, Z. and Yepes, P. and Yoo, I-K. and Yue, Q. and Zachariou, N. and Zawisza, M. and Zhan, W. and Zhang, H. and Zhang, S. and Zhang, W. M. and Zhang, Y. and Zhang, Z. P. and Zhao, Y. and Zhong, C. and Zhou, J. and Zoulkarneev, R. and Zoulkarneeva, Y. and Zuo, J. X. (2008) Forward Neutral-Pion Transverse Single-Spin Asymmetries in p+p Collisions at √s =200 Ge V. Physical Review Letters, 101 (22). Art. No. 222001. ISSN 0031-9007. http://resolver.caltech.edu/CaltechAUTHORS:20091203-143205833

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Abstract

We report precision measurements of the Feynman x (x_F) dependence, and first measurements of the transverse momentum (p_T) dependence, of transverse single-spin asymmetries for the production of π^0 mesons from polarized proton collisions at √s =200 Ge V. The x_F dependence of the results is in fair agreement with perturbative QCD model calculations that identify orbital motion of quarks and gluons within the proton as the origin of the spin effects. Results for the p_T dependence at fixed x_F are not consistent with these same perturbative QCD-based calculations.


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http://dx.doi.org/10.1103/PhysRevLett.101.222001DOIArticle
http://link.aps.org/doi/10.1103/PhysRevLett.101.222001 PublisherArticle
Additional Information:© 2008 The American Physical Society. Received 21 January 2008; published 25 November 2008. We thank the RHIC Operations Group and RCF at BNL, and the NERSC Center at LBNL and the resources provided by the Open Science Grid consortium for their support. This work was supported in part by the Offices of NP and HEP within the U.S. DOE Office of Science; the U.S. NSF; a sponsored research grant from Renaissance Technologies Corporation; the BMBF of Germany; CNRS/IN2P3, RA, RPL, and EMN of France; EPSRC of the United Kingdom; FAPESP of Brazil; the Russian Ministry of Science and Technology; the Ministry of Education and the NNSFC of China; IRP and GA of the Czech Republic, FOM of the Netherlands, DAE, DST, and CSIR of the Government of India; Swiss NSF; the Polish State Committee for Scientific Research; Slovak Research and Development Agency, and the Korea Science and Engineering Foundation.
Funders:
Funding AgencyGrant Number
NP/High Energy PhysicsUNSPECIFIED
Department of Energy (DOE)UNSPECIFIED
NSFUNSPECIFIED
Renaissance Technologies CorporationUNSPECIFIED
Bundesministerium für Bildung und Forschung (BMBF)UNSPECIFIED
Centre National de la Recherche Scientifique (CNRS)UNSPECIFIED
Institut National de Physique Nucléaire et de Physique des Particules (IN2P3)UNSPECIFIED
RAUNSPECIFIED
RPLUNSPECIFIED
École Nationale de la MagistratureUNSPECIFIED
Engineering and Physical Sciences Research Council (EPSRC)UNSPECIFIED
Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP)UNSPECIFIED
Ministry of Science and Technology of the Russian FederationUNSPECIFIED
Ministry of Education (China)UNSPECIFIED
Installation Restoration Program (Czech Republic)UNSPECIFIED
GA of the (Czech Republic)UNSPECIFIED
Stichting voor Fundamenteel Onderzoek der Materie (FOM)UNSPECIFIED
Department of Atomic Energy (India)UNSPECIFIED
Department of Science & Technology (India)UNSPECIFIED
Council of Scientific and Industrial Research (India)UNSPECIFIED
Swiss National Science Foundation (SNSF)UNSPECIFIED
State Committee for Scientific Research (Poland)UNSPECIFIED
Research and Development Agency (Slovakia)UNSPECIFIED
Korea Science and Engineering FoundationUNSPECIFIED
National Natural Science Foundation of ChinaUNSPECIFIED
Classification Code:PACS: 13.88.+e; 13.85.Ni; 12.38.Qk
Record Number:CaltechAUTHORS:20091203-143205833
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20091203-143205833
Official Citation:Forward Neutral-Pion Transverse Single-Spin Asymmetries in p + p Collisions at sqrt(s) = 200 GeV B. I. Abelev, M. M. Aggarwal, Z. Ahammed, B. D. Anderson, D. Arkhipkin, G. S. Averichev, Y. Bai, J. Balewski, O. Barannikova, L. S. Barnby, J. Baudot, S. Baumgart, D. R. Beavis, R. Bellwied, F. Benedosso, R. R. Betts, S. Bhardwaj, A. Bhasin, A. K. Bhati, H. Bichsel, J. Bielcik, J. Bielcikova, L. C. Bland, S-L. Blyth, M. Bombara, B. E. Bonner, M. Botje, J. Bouchet, E. Braidot, A. V. Brandin, S. Bueltmann, T. P. Burton, M. Bystersky, X. Z. Cai, H. Caines, M. Calderon de la Barca Sanchez, J. Callner, O. Catu, D. Cebra, M. C. Cervantes, Z. Chajecki, P. Chaloupka, S. Chattopadhyay, H. F. Chen, J. H. Chen, J. Y. Chen, J. Cheng, M. Cherney, A. Chikanian, K. E. Choi, W. Christie, S. U. Chung, R. F. Clarke, M. J. M. Codrington, J. P. Coffin, T. M. Cormier, M. R. Cosentino, J. G. Cramer, H. J. Crawford, D. Das, S. Dash, M. Daugherity, M. M. de Moura, T. G. Dedovich, M. DePhillips, A. A. Derevschikov, R. Derradi de Souza, L. Didenko, T. Dietel, P. Djawotho, S. M. Dogra, X. Dong, J. L. Drachenberg, J. E. Draper, F. Du, J. C. Dunlop, M. R. Dutta Mazumdar, W. R. Edwards, L. G. Efimov, E. Elhalhuli, V. Emelianov, J. Engelage, G. Eppley, B. Erazmus, M. Estienne, L. Eun, P. Fachini, R. Fatemi, J. Fedorisin, A. Feng, P. Filip, E. Finch, V. Fine, Y. Fisyak, J. Fu, C. A. Gagliardi, L. Gaillard, M. S. Ganti, E. Garcia-Solis, V. Ghazikhanian, P. Ghosh, Y. N. Gorbunov, A. Gordon, H. Gos, O. Grebenyuk, D. Grosnick, B. Grube, S. M. Guertin, K. S. F. F. Guimaraes, A. Gupta, N. Gupta, W. Guryn, B. Haag, T. J. Hallman, A. Hamed, J. W. Harris, W. He, M. Heinz, T. W. Henry, S. Heppelmann, B. Hippolyte, A. Hirsch, E. Hjort, A. M. Hoffman, G. W. Hoffmann, D. J. Hofman, R. S. Hollis, M. J. Horner, H. Z. Huang, E. W. Hughes, T. J. Humanic, G. Igo, A. Iordanova, P. Jacobs, W. W. Jacobs, P. Jakl, F. Jin, P. G. Jones, E. G. Judd, S. Kabana, K. Kajimoto, K. Kang, J. Kapitan, M. Kaplan, D. Keane, A. Kechechyan, D. Kettler, V. Yu. Khodyrev, J. Kiryluk, A. Kisiel, S. R. Klein, A. G. Knospe, A. Kocoloski, D. D. Koetke, T. Kollegger, M. Kopytine, L. Kotchenda, V. Kouchpil, K. L. Kowalik, P. Kravtsov, V. I. Kravtsov, K. Krueger, C. Kuhn, A. Kumar, P. Kurnadi, M. A. C. Lamont, J. M. Landgraf, J. Langdon, S. Lange, S. LaPointe, F. Laue, J. Lauret, A. Lebedev, R. Lednicky, C-H. Lee, M. J. LeVine, C. Li, Q. Li, Y. Li, G. Lin, X. Lin, S. J. Lindenbaum, M. A. Lisa, F. Liu, H. Liu, J. Liu, L. Liu, T. Ljubicic, W. J. Llope, R. S. Longacre, W. A. Love, Y. Lu, T. Ludlam, D. Lynn, G. L. Ma, J. G. Ma, Y. G. Ma, D. P. Mahapatra, R. Majka, L. K. Mangotra, R. Manweiler, S. Margetis, C. Markert, H. S. Matis, Yu. A. Matulenko, T. S. McShane, A. Meschanin, J. Millane, C. Miller, M. L. Miller, N. G. Minaev, S. Mioduszewski, A. Mischke, J. Mitchell, B. Mohanty, D. A. Morozov, M. G. Munhoz, B. K. Nandi, C. Nattrass, T. K. Nayak, J. M. Nelson, C. Nepali, P. K. Netrakanti, M. J. Ng, L. V. Nogach, S. B. Nurushev, G. Odyniec, A. Ogawa, H. Okada, V. Okorokov, D. Olson, M. Pachr, S. K. Pal, Y. Panebratsev, A. I. Pavlinov, T. Pawlak, T. Peitzmann, V. Perevoztchikov, C. Perkins, W. Peryt, S. C. Phatak, M. Planinic, J. Pluta, N. Poljak, N. Porile, A. M. Poskanzer, M. Potekhin, B. V. K. S. Potukuchi, D. Prindle, C. Pruneau, N. K. Pruthi, J. Putschke, I. A. Qattan, G. Rakness, R. Raniwala, S. Raniwala, R. L. Ray, D. Relyea, A. Ridiger, H. G. Ritter, J. B. Roberts, O. V. Rogachevskiy, J. L. Romero, A. Rose, C. Roy, L. Ruan, M. J. Russcher, V. Rykov, R. Sahoo, I. Sakrejda, T. Sakuma, S. Salur, J. Sandweiss, M. Sarsour, J. Schambach, R. P. Scharenberg, N. Schmitz, J. Seger, I. Selyuzhenkov, P. Seyboth, A. Shabetai, E. Shahaliev, M. Shao, M. Sharma, X-H. Shi, E. P. Sichtermann, F. Simon, R. N. Singaraju, M. J. Skoby, N. Smirnov, R. Snellings, P. Sorensen, J. Sowinski, J. Speltz, H. M. Spinka, B. Srivastava, A. Stadnik, T. D. S. Stanislaus, D. Staszak, R. Stock, M. Strikhanov, B. Stringfellow, A. A. P. Suaide, M. C. Suarez, N. L. Subba, M. Sumbera, X. M. Sun, Z. Sun, B. Surrow, T. J. M. Symons, A. Szanto de Toledo, J. Takahashi, A. H. Tang, Z. Tang, T. Tarnowsky, J. Tatarowicz, D. Thein, J. H. Thomas, J. Tian, A. R. Timmins, S. Timoshenko, M. Tokarev, T. A. Trainor, V. N. Tram, A. L. Trattner, S. Trentalange, R. E. Tribble, O. D. Tsai, J. Ulery, T. Ullrich, D. G. Underwood, G. Van Buren, N. van der Kolk, M. van Leeuwen, A. M. Vander Molen, R. Varma, G. M. S. Vasconcelos, I. M. Vasilevski, A. N. Vasiliev, R. Vernet, F. Videbaek, S. E. Vigdor, Y. P. Viyogi, S. Vokal, S. A. Voloshin, M. Wada, W. T. Waggoner, F. Wang, G. Wang, J. S. Wang, Q. Wang, X. Wang, X. L. Wang, Y. Wang, J. C. Webb, G. D. Westfall, C. Whitten, Jr., H. Wieman, S. W. Wissink, R. Witt, J. Wu, Y. Wu, N. Xu, Q. H. Xu, Z. Xu, P. Yepes, I-K. Yoo, Q. Yue, N. Zachariou, M. Zawisza, W. Zhan, H. Zhang, S. Zhang, W. M. Zhang, Y. Zhang, Z. P. Zhang, Y. Zhao, C. Zhong, J. Zhou, R. Zoulkarneev, Y. Zoulkarneeva, and J. X. Zuo STAR Collaboration, Phys. Rev. Lett. 101, 222001 (2008), DOI:10.1103/PhysRevLett.101.222001
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Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:14 Dec 2009 16:59
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