Measurement of transverse single-spin asymmetries for J/ψ production in polarized p plus p collisions at √s=200 GeV

被引：30

作者：

Adare, A. ^{[1
]}

Afanasiev, S. ^{[28
]}

Aidala, C. ^{[42
]}

Ajitanand, N. N. ^{[58
]}

Akiba, Y. ^{[53
]}

Al-Bataineh, H. ^{[48
]}

Alexander, J. ^{[58
]}

Al-Ta'ani, H. ^{[48
]}

Angerami, A. ^{[13
,14
]}

Aoki, K. ^{[35
,53
]}

Apadula, N. ^{[59
]}

Aphecetche, L. ^{[60
]}

Aramaki, Y. ^{[12
]}

Asai, J. ^{[53
]}

Atomssa, E. T. ^{[36
]}

Averbeck, R. ^{[59
]}

Awes, T. C. ^{[49
]}

Azmoun, B. ^{[7
]}

Babintsev, V. ^{[24
]}

Bai, M. ^{[6
]}

Baksay, G. ^{[20
]}

Baksay, L. ^{[20
]}

Baldisseri, A. ^{[16
]}

Barish, K. N. ^{[8
]}

Barnes, P. D. ^{[38
]}

Bassalleck, B. ^{[47
]}

Basye, A. T. ^{[2
]}

Bathe, S. ^{[8
]}

Batsouli, S. ^{[49
]}

Baublis, V. ^{[52
]}

Baumann, C. ^{[43
]}

Bazilevsky, A. ^{[7
]}

Belikov, S. ^{[7
]}

Belmont, R. ^{[64
]}

Bennett, R. ^{[59
]}

Berdnikov, A. ^{[55
]}

Berdnikov, Y. ^{[55
]}

Bhom, J. H. ^{[67
]}

Bickley, A. A. ^{[1
]}

Blau, D. S. ^{[34
]}

Boissevain, J. G. ^{[38
]}

Bok, J. S. ^{[67
]}

Borel, H. ^{[16
]}

Borggren, N. ^{[58
]}

Boyle, K. ^{[59
]}

Brooks, M. L. ^{[38
]}

Buesching, H. ^{[7
]}

Bumazhnov, V. ^{[24
]}

Bunce, G. ^{[7
]}

Butsyk, S. ^{[38
]}

机构：

[1] Univ Colorado, Boulder, CO 80309 USA

[2] Abilene Christian Univ, Abilene, TX 79699 USA

[3] Acad Sinica, Inst Phys, Taipei 11529, Taiwan

[4] Banaras Hindu Univ, Dept Phys, Varanasi 221005, Uttar Pradesh, India

[5] Bhabha Atom Res Ctr, Bombay 400085, Maharashtra, India

[6] Brookhaven Natl Lab, Collider Accelerator Dept, Upton, NY 11973 USA

[7] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA

[8] Univ Calif Riverside, Riverside, CA 92521 USA

[9] Charles Univ Prague, CR-11636 Prague 1, Czech Republic

[10] Chonbuk Natl Univ, Jeonju 561756, South Korea

[11] CIAE, Beijing, Peoples R China

[12] Univ Tokyo, Grad Sch Sci, Ctr Nucl Study, Bunkyo Ku, Tokyo 1130033, Japan

[13] Columbia Univ, New York, NY 10027 USA

[14] Nevis Labs, Irvington, NY 10533 USA

[15] Czech Tech Univ, Prague 16636 6, Czech Republic

[16] CEA Saclay, F-91191 Gif Sur Yvette, France

[17] Debrecen Univ, H-4010 Debrecen, Hungary

[18] Eotvos Lorand Univ, ELTE, H-1117 Budapest, Hungary

[19] Ewha Womans Univ, Seoul 120750, South Korea

[20] Florida Inst Technol, Melbourne, FL 32901 USA

[21] Florida State Univ, Tallahassee, FL 32306 USA

[22] Georgia State Univ, Atlanta, GA 30303 USA

[23] Hiroshima Univ, Higashihiroshima 7398526, Japan

[24] State Res Ctr Russian Federat, IHEP Protvino, Inst High Energy Phys, Protvino 142281, Russia

[25] Univ Illinois, Urbana, IL 61801 USA

[26] Acad Sci Czech Republ, Inst Phys, Prague 18221 8, Czech Republic

[27] Iowa State Univ, Ames, IA 50011 USA

[28] Joint Inst Nucl Res, Dubna 141980, Moscow Region, Russia

[29] Helsinki Inst Phys, FI-40014 Jyvaskyla, Finland

[30] Univ Jyvaskyla, FI-40014 Jyvaskyla, Finland

[31] High Energy Accelerator Res Org, KEK, Tsukuba, Ibaraki 3050801, Japan

[32] Hungarian Acad Sci MTA KFKI RMKI, KFKI Res Inst Particle & Nucl Phys, H-1525 Budapest, Hungary

[33] Korea Univ, Seoul 136701, South Korea

[34] Russian Res Ctr Kurchatov Inst, Moscow, Russia

[35] Kyoto Univ, Kyoto 6068502, Japan

[36] Ecole Polytech, CNRS, IN2P3, Lab Leprince Ringuet, F-91128 Palaiseau, France

[37] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

[38] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

[39] Univ Blaise Pascal, LPC, CNRS, IN2P3, F-63177 Clermont Ferrand, Aubiere, France

[40] Lund Univ, Dept Phys, SE-22100 Lund, Sweden

[41] Univ Maryland, College Pk, MD 20742 USA

[42] Univ Massachusetts, Dept Phys, Amherst, MA 01003 USA

[43] Univ Munster, Inst Kernphys, D-48149 Munster, Germany

[44] Muhlenberg Coll, Allentown, PA 18104 USA

[45] Myongji Univ, Yongin 449728, Kyonggido, South Korea

[46] Nagasaki Inst Appl Sci, Nagasaki 8510193, Japan

[47] Univ New Mexico, Albuquerque, NM 87131 USA

[48] New Mexico State Univ, Las Cruces, NM 88003 USA

[49] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA

[50] Univ Paris 11, IPN Orsay, CNRS, IN2P3, F-91406 Orsay, France

来源：

PHYSICAL REVIEW D | 2010年 / 82卷 / 11期

基金：

日本学术振兴会; 新加坡国家研究基金会; 美国国家科学基金会; 以色列科学基金会;

关键词：

SIVERS ASYMMETRIES; ANALYZING POWER; SCATTERING; MOMENTUM; COLLINS;

D O I：

10.1103/PhysRevD.82.112008

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the first measurement of transverse single-spin asymmetries in J/psi production from transversely polarized p + p collisions at root s = 200 GeV with data taken by the PHENIX experiment in 2006 and 2008. The measurement was performed over the rapidity ranges 1.2 < vertical bar y vertical bar < 2.2 and vertical bar y vertical bar < 0.35 for transverse momenta up to 6 GeV/c. J/psi production at the Relativistic Heavy Ion Collider is dominated by processes involving initial-state gluons, and transverse single-spin asymmetries of the J/psi can provide access to gluon dynamics within the nucleon. Such asymmetries may also shed light on the long-standing question in QCD of the J/psi production mechanism. Asymmetries were obtained as a function of J/psi transverse momentum and Feynman-x, with a value of -0.086 +/- 0.026(stat) +/- 0.003(syst) in the forward region. This result suggests possible nonzero trigluon correlation functions in transversely polarized protons and, if well defined in this reaction, a nonzero gluon Sivers distribution function.

引用

页数：13

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