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

来源：

PHYSICS LETTERS B | 2013年 / 719卷 / 1-3期

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

页码：62 / 69

页数：8

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