Polarization and cross section of midrapidity J/ψ production in p plus p collisions at √s=510 GeV

被引:2
|
作者
Acharya, U. [21 ]
Adare, A. [11 ]
Aidala, C. [44 ]
Ajitanand, N. N. [62 ]
Akiba, Y. [57 ,58 ]
Akimoto, R. [10 ]
Alfred, M. [24 ]
Apadula, N. [29 ,63 ]
Aramaki, Y. [57 ]
Asano, H. [37 ,57 ]
Atomssa, E. T. [63 ]
Awes, T. C. [53 ]
Azmoun, B. [7 ]
Babintsev, V [25 ]
Bai, M. [6 ]
Bandara, N. S. [43 ]
Bannier, B. [63 ]
Barish, K. N. [8 ]
Bathe, S. [5 ,58 ]
Bazilevsky, A. [7 ]
Beaumier, M. [8 ]
Beckman, S. [11 ]
Belmont, R. [11 ,44 ,51 ]
Berdnikov, A. [60 ]
Berdnikov, Y. [60 ]
Bichon, L. [67 ]
Black, D. [8 ]
Blankenship, B. [67 ]
Bok, J. S. [50 ]
Borisov, V [60 ]
Boyle, K. [58 ]
Brooks, M. L. [40 ]
Bryslawskyj, J. [5 ,8 ]
Buesching, H. [7 ]
Bumazhnov, V [25 ]
Campbell, S. [12 ,13 ,29 ]
Roman, V. Canoa [63 ]
Chen, C-H [58 ]
Chi, C. Y. [12 ,13 ]
Chiu, M. [7 ]
Choi, I. J. [26 ]
Choi, J. B. [31 ]
Chujo, T. [66 ]
Citron, Z. [68 ]
Connors, M. [21 ]
Csanad, M. [16 ]
Csorgo, T. [69 ]
Datta, A. [49 ]
Daugherity, M. S. [1 ]
David, G. [7 ,63 ]
机构
[1] Abilene Christian Univ, Abilene, TX 79699 USA
[2] Augustana Univ, Dept Phys, Sioux Falls, SD 57197 USA
[3] Banaras Hindu Univ, Dept Phys, Varanasi 221005, Uttar Pradesh, India
[4] Bhabha Atom Res Ctr, Bombay 400085, Maharashtra, India
[5] CUNY, Baruch Coll, New York, NY 10010 USA
[6] Brookhaven Natl Lab, Collider Accelerator Dept, Upton, NY 11973 USA
[7] Brookhaven Natl Lab, Phys Dept, Upton, NY 11973 USA
[8] Univ Calif Riverside, Riverside, CA 92521 USA
[9] Charles Univ Prague, Ovocny Trh 5, Prague 11636 1, Czech Republic
[10] Univ Tokyo, Ctr Nucl Study, Grad Sch Sci, Bunkyo Ku, 7-3-1 Hongo, 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, Zikova 4, Prague 16636 6, Czech Republic
[15] Debrecen Univ, Egyet Ter 1, H-4010 Debrecen, Hungary
[16] Eotvos Lorand Univ, ELTE, Pazmany Ps 1-A, H-1117 Budapest, Hungary
[17] Eszterhazy Karoly Univ, Karoly Robert Campus,Matrai Ut 36, H-3200 Gyongyos, Hungary
[18] Ewha Womans Univ, Seoul 120750, South Korea
[19] Florida A&M Univ, Tallahassee, FL 32307 USA
[20] Florida State Univ, Tallahassee, FL 32306 USA
[21] Georgia State Univ, Atlanta, GA 30303 USA
[22] Hanyang Univ, Seoul 133792, South Korea
[23] Hiroshima Univ, Higashihiroshima 7398526, Japan
[24] Howard Univ, Dept Phys & Astron, Washington, DC 20059 USA
[25] IHEP Protvino, Inst High Energy Phys, State Res Ctr Russian Federat, Protvino 142281, Russia
[26] Univ Illinois, Urbana, IL 61801 USA
[27] Russian Acad Sci, Inst Nucl Res, Prospekt 60 Letiya Oktyabrya 7a, Moscow 117312, Russia
[28] Acad Sci Czech Republ, Inst Phys, Na Slovance 2, Prague 18221 8, Czech Republic
[29] Iowa State Univ, Ames, IA 50011 USA
[30] Japan Atom Energy Agcy, Adv Sci Res Ctr, 2-4 Shirakata Shirane, Tokai, Ibaraki 3191195, Japan
[31] Jeonbuk Natl Univ, Jeonju 54896, South Korea
[32] Helsinki Inst Phys, POB 35, FI-40014 Jyvaskyla, Finland
[33] Univ Jyvaskyla, POB 35, FI-40014 Jyvaskyla, Finland
[34] High Energy Accelerator Res Org, KEK, Tsukuba, Ibaraki 3050801, Japan
[35] Korea Univ, Seoul 02841, South Korea
[36] Kurchatov Inst, Natl Res Ctr, Moscow 123098, Russia
[37] Kyoto Univ, Kyoto 6068502, Japan
[38] Lahore Univ Management Sci, Phys Dept, Lahore 54792, Pakistan
[39] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA
[40] Los Alamos Natl Lab, Los Alamos, NM 87545 USA
[41] Lund Univ, Dept Phys, Box 118, S-22100 Lund, Sweden
[42] Univ Maryland, College Pk, MD 20742 USA
[43] Univ Massachusetts, Dept Phys, Amherst, MA 01003 USA
[44] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA
[45] Muhlenberg Coll, Allentown, PA 18104 USA
[46] Myongji Univ, Yongin 449728, Kyonggido, South Korea
[47] Nara Womens Univ, Kita Uoya Nishi Machi, Nara 6308506, Japan
[48] Natl Res Nucl Univ, Moscow Engn Phys Inst, MEPhI, Moscow 115409, Russia
[49] Univ New Mexico, Albuquerque, NM 87131 USA
[50] New Mexico State Univ, Las Cruces, NM 88003 USA
基金
日本学术振兴会; 美国国家科学基金会; 以色列科学基金会;
关键词
QCD;
D O I
10.1103/PhysRevD.102.072008
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The PHENIX experiment has measured the spin alignment for inclusive J/psi -> e(+) e(-) decays in protonproton collisions at root s = 510 GeV at midrapidity. The angular distributions have been measured in three different polarization frames, and the three decay angular coefficients have been extracted in a full two-dimensional analysis. Previously, PHENIX saw large longitudinal net polarization at forward rapidity at the same collision energy. This analysis at midrapidity, complementary to the previous PHENIX results, sees no sizable polarization in the measured transverse momentum range of 0.0 < p(T) < 10.0 GeV/c. The results are consistent with a previous one-dimensional analysis at midrapidity at root s = 200 GeV. The transverse-momentum-dependent cross section for midrapidity J/psi production has additionally been measured, and after comparison to world data, a simple logarithmic dependence of the cross section on root s was found.
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页数:13
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