Single spin asymmetry AN in polarized proton-proton elastic scattering at √s=200 GeV

被引:47
|
作者
Adamczyk, L. [2 ]
Agakishiev, G. [21 ]
Aggarwal, M. M. [34 ]
Ahammed, Z. [53 ]
Alakhverdyants, A. V. [21 ]
Alekseev, I. [19 ]
Alford, J. [22 ]
Anson, C. D. [31 ]
Arkhipkin, D. [1 ]
Aschenauer, E. [1 ]
Averichev, G. S. [21 ]
Balewski, J. [26 ]
Banerjee, A. [53 ]
Barnovska, Z. [14 ]
Beavis, D. R. [1 ]
Bellwied, R. [49 ]
Betancourt, M. J. [26 ]
Betts, R. R. [10 ]
Bhasin, A. [20 ]
Bhati, A. K. [34 ]
Bichsel, H. [55 ]
Bielcik, J. [13 ]
Bielcikova, J. [14 ]
Bland, L. C. [1 ]
Bordyuzhin, I. G. [19 ]
Borowski, W. [45 ]
Bouchet, J. [22 ]
Brandin, A. V. [29 ]
Brovko, S. G. [6 ]
Bruna, E. [57 ]
Bueltmann, S. [32 ]
Bunzarov, I. [21 ]
Burton, T. P. [1 ]
Butterworth, J. [40 ]
Cai, X. Z. [44 ]
Caines, H. [57 ]
de la Barca Sanchez, M. Calderon [6 ]
Cebra, D. [6 ]
Cendejas, R. [7 ]
Cervantes, M. C. [47 ]
Chaloupka, P. [13 ]
Chang, Z. [47 ]
Chattopadhyay, S. [53 ]
Chen, H. F. [42 ]
Chen, J. H. [44 ]
Chen, J. Y. [9 ]
Chen, L. [9 ]
Cheng, J. [50 ]
Cherney, M. [12 ]
Chikanian, A. [57 ]
机构
[1] Brookhaven Natl Lab, Upton, NY 11973 USA
[2] AGH Univ Sci & Technol, Krakow, Poland
[3] Argonne Natl Lab, Argonne, IL 60439 USA
[4] Univ Birmingham, Birmingham, W Midlands, England
[5] Univ Calif Berkeley, Berkeley, CA 94720 USA
[6] Univ Calif Davis, Davis, CA 95616 USA
[7] Univ Calif Los Angeles, Los Angeles, CA 90095 USA
[8] Univ Estadual Campinas, Sao Paulo, Brazil
[9] Cent China Normal Univ HZNU, Wuhan 430079, Peoples R China
[10] Univ Illinois, Chicago, IL 60607 USA
[11] Cracow Univ Technol, Krakow, Poland
[12] Creighton Univ, Omaha, NE 68178 USA
[13] Czech Tech Univ, Fac Nucl Sci & Phys Engn, CR-11519 Prague, Czech Republic
[14] Acad Sci Czech Republ, Inst Nucl Phys, CZ-25068 Rez, Czech Republic
[15] Goethe Univ Frankfurt, D-60054 Frankfurt, Germany
[16] Inst Phys, Bhubaneswar 751005, Orissa, India
[17] Indian Inst Technol, Mumbai 400076, Maharashtra, India
[18] Indiana Univ, Bloomington, IN 47408 USA
[19] Alikhanov Inst Theoret & Expt Phys, Moscow, Russia
[20] Univ Jammu, Jammu 180001, India
[21] Joint Inst Nucl Res, Dubna 141980, Russia
[22] Kent State Univ, Kent, OH 44242 USA
[23] Univ Kentucky, Lexington, KY 40506 USA
[24] Inst Modern Phys, Lanzhou, Peoples R China
[25] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA
[26] MIT, Cambridge, MA 02139 USA
[27] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany
[28] Michigan State Univ, E Lansing, MI 48824 USA
[29] Moscow Engn Phys Inst, Moscow 115409, Russia
[30] Natl Inst Sci & Educ & Res, Bhubaneswar 751005, Orissa, India
[31] Ohio State Univ, Columbus, OH 43210 USA
[32] Old Dominion Univ, Norfolk, VA 23529 USA
[33] Inst Nucl Phys PAN, Krakow, Poland
[34] Panjab Univ, Chandigarh 160014, India
[35] Penn State Univ, University Pk, PA 16802 USA
[36] Inst High Energy Phys, Protvino, Russia
[37] Purdue Univ, W Lafayette, IN 47907 USA
[38] Pusan Natl Univ, Pusan 609735, South Korea
[39] Univ Rajasthan, Jaipur 302004, Rajasthan, India
[40] Rice Univ, Houston, TX 77251 USA
[41] Univ Sao Paulo, Sao Paulo, Brazil
[42] Univ Sci & Technol China, Hefei 230026, Peoples R China
[43] Shandong Univ, Jinan 250100, Shandong, Peoples R China
[44] Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China
[45] SUBATECH, Nantes, France
[46] Temple Univ, Philadelphia, PA 19122 USA
[47] Texas A&M Univ, College Stn, TX 77843 USA
[48] Univ Texas Austin, Austin, TX 78712 USA
[49] Univ Houston, Houston, TX 77204 USA
[50] Tsinghua Univ, Beijing 100084, Peoples R China
基金
巴西圣保罗研究基金会; 新加坡国家研究基金会;
关键词
Polarization; Elastic scattering; 1ST MEASUREMENT; IMPACT-PICTURE; PP; INTERFERENCE; REGION; ENERGY; A(N);
D O I
10.1016/j.physletb.2013.01.014
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We report a high precision measurement of the transverse single spin asymmetry A(N) at the center of mass energy root s = 200 GeV in elastic proton-proton scattering by the STAR experiment at RHIC. The A(N) was measured in the four-momentum transfer squared t range 0.003 <= vertical bar t vertical bar <= 0.035 (GeV/c)(2), the region of a significant interference between the electromagnetic and hadronic scattering amplitudes. The measured values of A(N) and its t-dependence are consistent with a vanishing hadronic spin-flip amplitude, thus providing strong constraints on the ratio of the single spin-flip to the non-flip amplitudes. Since the hadronic amplitude is dominated by the Pomeron amplitude at this root s, we conclude that this measurement addresses the question about the presence of a hadronic spin flip due to the Pomeron exchange in polarized proton-proton elastic scattering. (c) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码:62 / 69
页数:8
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