Double-spin asymmetry of electrons from heavy-flavor decays in p plus p collisions at √s=200 GeV

被引：9

作者：

Adare, A. ^{[11
]}

Afanasiev, S. ^{[27
]}

Aidala, C. ^{[36
]}

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

Akiba, Y. ^{[52
,53
]}

Akimoto, R. ^{[10
]}

Al-Ta'ani, H. ^{[46
]}

Alexander, J. ^{[58
]}

Andrews, K. R. ^{[1
]}

Angerami, A. ^{[12
,13
]}

Aoki, K. ^{[52
]}

Apadula, N. ^{[59
]}

Appelt, E. ^{[63
]}

Aramaki, Y. ^{[10
,52
]}

Armendariz, R. ^{[6
]}

Aschenauer, E. C. ^{[5
]}

Awes, T. C. ^{[48
]}

Azmoun, B. ^{[5
]}

Babintsev, V. ^{[22
]}

Bai, M. ^{[4
]}

Bannier, B. ^{[59
]}

Barish, K. N. ^{[6
]}

Bassalleck, B. ^{[45
]}

Basye, A. T. ^{[1
]}

Bathe, S. ^{[53
]}

Baublis, V. ^{[51
]}

Baumann, C. ^{[41
]}

Bazilevsky, A. ^{[5
]}

Belmont, R. ^{[63
]}

Ben-Benjamin, J. ^{[42
]}

Bennett, R. ^{[59
]}

Berdnikov, A. ^{[55
]}

Berdnikov, Y. ^{[55
]}

Blau, D. S. ^{[32
]}

Bok, J. S. ^{[66
]}

Boyle, K. ^{[53
]}

Brooks, M. L. ^{[36
]}

Broxmeyer, D. ^{[42
]}

Buesching, H. ^{[5
]}

Bumazhnov, V. ^{[22
]}

Bunce, G. ^{[5
,53
]}

Butsyk, S. ^{[36
]}

Campbell, S. ^{[59
]}

Castera, P. ^{[59
]}

Chen, C-H ^{[59
]}

Chi, C. Y. ^{[12
,13
]}

Chiu, M. ^{[5
]}

Choi, I. J. ^{[23
,66
]}

Choi, J. B. ^{[8
]}

Choudhury, R. K. ^{[3
]}

机构：

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

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

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

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

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

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

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

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

[9] China Inst Atom Energy, Sci & Technol Nucl Data Lab, Beijing 102413, Peoples R China

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

[11] Univ Colorado, Boulder, CO 80309 USA

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

[13] Nevis Labs, Irvington, NY 10533 USA

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

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

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

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

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

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

[20] Hanyang Univ, Seoul 133792, South Korea

[21] Hiroshima Univ, Higashihiroshima 7398526, Japan

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

[23] Univ Illinois, Urbana, IL 61801 USA

[24] Russian Acad Sci, Inst Nucl Res, Moscow 117312, Russia

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

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

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

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

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

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

[31] Korea Univ, Seoul 136701, South Korea

[32] IV Kurchatov Atom Energy Inst, Russian Res Ctr, Moscow 123098, Russia

[33] Kyoto Univ, Kyoto 6068502, Japan

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

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

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

[37] Univ Blaise Pascal, CNRS, IN2P3, LPC, F-63177 Aubiere, France

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

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

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

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

[42] Muhlenberg Coll, Allentown, PA 18104 USA

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

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

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

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

[47] Ohio Univ, Dept Phys & Astron, Athens, OH 45701 USA

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

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

[50] Peking Univ, Beijing 100871, Peoples R China

来源：

PHYSICAL REVIEW D | 2013年 / 87卷 / 01期

基金：

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

关键词：

STRUCTURE-FUNCTION G(1)(D); PHENIX; PROTON; ELECTROPRODUCTION; SCATTERING; DEUTERON; DETECTOR;

D O I：

10.1103/PhysRevD.87.012011

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report on the first measurement of the double-spin asymmetry, A(LL), of electrons from the decays of hadrons containing heavy flavor in longitudinally polarized p + p collisions at root s = 200 GeV for p(T) = 0.5 to 3.0 GeV/c. The asymmetry was measured at midrapidity (vertical bar eta vertical bar < 0.35) with the PHENIX detector at the Relativistic Heavy Ion Collider. The measured asymmetries are consistent with zero within the statistical errors. We obtained a constraint for the polarized gluon distribution in the proton of vertical bar Delta g/g(log(10)(x) = -1.6(-0.4)(+0.5), mu = m(T)(c)vertical bar(2) < 0.030 (1 sigma) based on a leading-order perturbative quantum chromodynamics model, using the measured asymmetry. DOI: 10.1103/PhysRevD.87.012011

引用

页数：17

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