Centrality categorization Rp(d)+A in high-energy collisions

被引：63

作者：

Adare, A. ^{[13
]}

Aidala, C. ^{[43
,44
]}

Ajitanand, N. N. ^{[60
]}

Akiba, Y. ^{[56
,57
]}

Al-Bataineh, H. ^{[50
]}

Alexander, J. ^{[60
]}

Angerami, A. ^{[14
,15
]}

Aoki, K. ^{[35
,56
]}

Apadula, N. ^{[28
,61
]}

Aramaki, Y. ^{[12
,56
]}

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

Averbeck, R. ^{[61
]}

Awes, T. C. ^{[52
]}

Azmoun, B. ^{[7
]}

Babintsev, V. ^{[24
]}

Bai, M. ^{[6
]}

Baksay, G. ^{[20
]}

Baksay, L. ^{[20
]}

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

Bassalleck, B. ^{[49
]}

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

Bathe, S. ^{[5
,8
,57
]}

Baublis, V. ^{[55
]}

Baumann, C. ^{[45
]}

Bazilevsky, A. ^{[7
]}

Belikov, S. ^{[7
]}

Belmont, R. ^{[65
]}

Bennett, R. ^{[61
]}

Bhom, J. H. ^{[69
]}

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

Bok, J. S. ^{[69
]}

Boyle, K. ^{[61
]}

Brooks, M. L. ^{[39
]}

Buesching, H. ^{[7
]}

Bumazhnov, V. ^{[24
]}

Bunce, G. ^{[7
,57
]}

Butsyk, S. ^{[39
]}

Campbell, S. ^{[61
]}

Caringi, A. ^{[46
]}

Chen, C. -H. ^{[61
]}

Chi, C. Y. ^{[14
,15
]}

Chiu, M. ^{[7
]}

Choi, I. J. ^{[69
]}

Choi, J. B. ^{[10
]}

Choudhury, R. K. ^{[4
]}

Christiansen, P. ^{[41
]}

Chujo, T. ^{[64
]}

Chung, P. ^{[60
]}

Chvala, O. ^{[8
]}

Cianciolo, V. ^{[52
]}

机构：

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

[2] Augustana Coll, 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, Dept Phys, Upton, NY 11973 USA

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

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

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

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

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

[13] Univ Colorado, Boulder, CO 80309 USA

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

[15] Nevis Labs, Irvington, NY 10533 USA

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

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

[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, Inst High Energy Phys, IHEP Protvino, Protvino 142281, Russia

[25] Univ Illinois, Urbana, IL 61801 USA

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

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

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

[29] Japan Atom Energy Agcy, Adv Sci Res Ctr, Ibaraki 3191195, Japan

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

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

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

[33] Korea Univ, Seoul 136701, South Korea

[34] Russian Res Ctr, Kurchatov Inst, Moscow 123098, Russia

[35] Kyoto Univ, Kyoto 6068502, Japan

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

[37] Lahore Univ Management Sci, Dept Phys, Lahore 54792, Pakistan

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

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

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

[41] Lund Univ, Dept Phys, SE-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] Univ Munster, Inst Kernphys, D-48149 Munster, Germany

[46] Muhlenberg Coll, Allentown, PA 18104 USA

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

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

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

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

来源：

PHYSICAL REVIEW C | 2014年 / 90卷 / 03期

基金：

新加坡国家研究基金会; 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：

MULTIPLICITY DISTRIBUTIONS; ANGULAR-CORRELATIONS; LONG-RANGE; PARTON; SCATTERING; SIDE;

D O I：

10.1103/PhysRevC.90.034902

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

High-energy proton- and deuteron-nucleus collisions provide an excellent tool for studying a wide array of physics effects, including modifications of parton distribution functions in nuclei, gluon saturation, and color neutralization and hadronization in a nuclear environment, among others. All of these effects are expected to have a significant dependence on the size of the nuclear target and the impact parameter of the collision, also known as the collision centrality. In this article, we detail a method for determining centrality classes in p(d) + A collisions via cuts on the multiplicity at backward rapidity (i.e., the nucleus-going direction) and for determining systematic uncertainties in this procedure. For d + Au collisions at root s(NN) = 200 GeV we find that the connection to geometry is confirmed by measuring the fraction of events in which a neutron from the deuteron does not interact with the nucleus. As an application, we consider the nuclear modification factors Rp(d)+A, for which there is a bias in the measured centrality-dependent yields owing to auto correlations between the process of interest and the backward-rapidity multiplicity. We determine the bias-correction factors within this framework. This method is further tested using the HIJING Monte Carlo generator. We find that for d + Au collisions at root s(NN) = 200 GeV, these bias corrections are small and vary by less than 5% (10%) up to p(T) = 10 (20) GeV/c. In contrast, for p + Pb collisions at v root s(NN) = 5.02 TeV we find that these bias factors are an order of magnitude larger and strongly pT dependent, likely attributable to the larger effect of multiparton interactions.

引用

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