Elliptic flow of muons from heavy-flavour hadron decays at forward rapidity in Pb-Pb collisions at √sNN=2.76TeV

被引：23

作者：

Adam, J. ^{[54
]}

Adamova, D. ^{[97
]}

Aggarwal, M. M. ^{[101
]}

Rinella, G. Aglieri ^{[50
]}

Agnello, M. ^{[125
]}

Agrawal, N. ^{[62
]}

Ahammed, Z. ^{[146
]}

Ahn, S. U. ^{[82
]}

Aiola, S. ^{[150
]}

Akindinov, A. ^{[72
]}

Alam, S. N. ^{[146
]}

Aleksandrov, D. ^{[114
]}

Alessandro, B. ^{[125
]}

Alexandre, D. ^{[116
]}

Alfaro Molina, R. ^{[78
]}

Alici, A. ^{[14
,15
,119
]}

Alkin, A. ^{[3
]}

Almaraz, J. R. M. ^{[133
]}

Alme, J. ^{[52
]}

Alt, T. ^{[57
]}

Altinpinar, S. ^{[22
]}

Altsybeev, I. ^{[145
]}

Alves Garcia Prado, C. ^{[134
]}

Andrei, C. ^{[92
]}

Andronic, A. ^{[110
,111
]}

Anguelov, V. ^{[107
]}

Anielski, J. ^{[68
]}

Anticic, T. ^{[112
]}

Antinori, F. ^{[122
]}

Antonioli, R. ^{[119
]}

Aphecetche, L. ^{[127
]}

Appelshaeuser, H. ^{[67
]}

Arcelli, S. ^{[36
,37
]}

Armesto, N. ^{[20
,21
]}

Arnaldi, R. ^{[125
]}

Arsene, I. C. ^{[26
]}

Arslandok, M. ^{[67
]}

Audurier, B. ^{[127
]}

Augustinus, A. ^{[50
]}

Averbeck, R. ^{[110
,111
]}

Azmi, M. D. ^{[23
]}

Bach, M. ^{[57
]}

Badala, A. ^{[121
]}

Baek, Y. W. ^{[58
]}

Bagnasco, S. ^{[125
]}

Bailhache, R. ^{[67
]}

Bala, R. ^{[104
]}

Baldisseri, A. ^{[18
]}

Pedrosa, F. Baltasar Dos Santos ^{[50
]}

Baral, R. C. ^{[75
]}

机构：

[1] AI Alikhanyan Natl Sci Lab Yerevan Phys Inst Fdn, Yerevan, Armenia

[2] Benemerita Univ Autonoma Puebla, Puebla, Mexico

[3] Bogolyubov Inst Theoret Phys, Kiev, Ukraine

[4] Bose Inst, Dept Phys, Kolkata, India

[5] CAPSS, Kolkata, India

[6] Budker Inst Nucl Phys, Novosibirsk 630090, Russia

[7] Calif Polytech State Univ San Luis Obispo, San Luis Obispo, CA 93407 USA

[8] Cent China Normal Univ, Wuhan, Peoples R China

[9] IN2P3, Ctr Calcul, Villeurbanne, France

[10] Ctr Aplicac Tecnol & Desarrollo Nucl CEADEN, Havana, Cuba

[11] Ctr Invest Energet Medioambientales & Tecnol CIEM, Madrid, Spain

[12] Ctr Invest & Estudios Avanzados CINVESTAV, Mexico City, DF, Mexico

[13] Ctr Invest & Estudios Avanzados CINVESTAV, Merida, Mexico

[14] Ctr Fermi Museo Stor Fis, Rome, Italy

[15] Ctr Studi & Ric Enrico Fermi, Rome, Italy

[16] Chicago State Univ, Chicago, IL USA

[17] China Inst Atom Energy, Beijing, Peoples R China

[18] CEA, IRFU, Saclay, France

[19] COMSATS Inst Informat Technol CIIT, Islamabad, Pakistan

[20] Univ Santiago de Compostela, Dept Fis Particulas, Santiago De Compostela, Spain

[21] Univ Santiago de Compostela, IGFAE, Santiago De Compostela, Spain

[22] Univ Bergen, Dept Phys & Technol, Bergen, Norway

[23] Aligarh Muslim Univ, Dept Phys, Aligarh 202002, Uttar Pradesh, India

[24] Ohio State Univ, Dept Phys, 174 W 18th Ave, Columbus, OH 43210 USA

[25] Sejong Univ, Dept Phys, Seoul, South Korea

[26] Univ Oslo, Dept Phys, Oslo, Norway

[27] Dipartimento Elettrotecn & Elettron Politecn, Bari, Italy

[28] Univ Roma La Sapienza, Dipartimento Fis, Rome, Italy

[29] Sezione Ist Nazl Fis Nucl, Rome, Italy

[30] Univ Cagliari, Dipartimento Fis, Cagliari, Italy

[31] Sezione Ist Nazl Fis Nucl, Cagliari, Italy

[32] Univ Trieste, Dipartimento Fis, Trieste, Italy

[33] Sezione Ist Nazl Fis Nucl, Trieste, Italy

[34] Univ Turin, Dipartimento Fis, Turin, Italy

[35] Sezione Ist Nazl Fis Nucl, Turin, Italy

[36] Univ Bologna, Dipartimento Fis & Astron, Bologna, Italy

[37] Sezione Ist Nazl Fis Nucl, Bologna, Italy

[38] Univ Catania, Dipartimento Fis & Astron, Catania, Italy

[39] Sezione Ist Nazl Fis Nucl, Catania, Italy

[40] Univ Padua, Dipartimento Fis & Astron, Padua, Italy

[41] Sezione Ist Nazl Fis Nucl, Padua, Italy

[42] Univ Salerno, Dipartimento Fis ER Caianiello, I-84100 Salerno, Italy

[43] Grp Coll INFN, Salerno, Italy

[44] Univ Piemonte Orientale, Dipartimento Sci & Innovaz Tecnol, Alessandria, Italy

[45] Grp Coll INFN, Alessandria, Italy

[46] Dipartimento Interateneo Fis M Merlin, Bari, Italy

[47] Sezione Ist Nazl Fis Nucl, Bari, Italy

[48] Lund Univ, Div Expt High Energy Phys, Lund, Sweden

[49] Univ Tubingen, Tubingen, Germany

[50] European Org Nucl Res CERN, Geneva, Switzerland

来源：

PHYSICS LETTERS B | 2016年 / 753卷

基金：

美国国家科学基金会; 中国国家自然科学基金; 瑞典研究理事会; 新加坡国家研究基金会; 欧洲研究理事会; 芬兰科学院; 美国能源部; 英国科学技术设施理事会; 巴西圣保罗研究基金会; 俄罗斯基础研究基金会; 日本学术振兴会;

关键词：

LHC; ALICE experiment; Pb-Pb collisions; Heavy-flavour decay muons; Elliptic flow; ANISOTROPIC FLOW; ENERGY-LOSS; TRANSVERSE-MOMENTUM; CHARGED-PARTICLES; AU+AU COLLISIONS; QUARK; PIONS; TEV;

D O I：

10.1016/j.physletb.2015.11.059

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The elliptic flow, v(2), of muons from heavy-flavour hadron decays at forward rapidity (2.5 < y < 4) is measured in Pb-Pb collisions at root s(NN)= 2.76TeVwith the ALICE detector at the LHC. The scalar product, two- and four-particle Q cumulants and Lee-Yang zeros methods are used. The dependence of the v(2) of muons from heavy-flavour hadron decays on the collision centrality, in the range 0-40%, and on transverse momentum, p(T), is studied in the interval 3 < p(T)< 10 GeV/c. A positive v(2) is observed with the scalar product and two-particle Q cumulants in semi-central collisions (10-20% and 20-40% centrality classes) for the p(T) interval from 3 to about 5GeV/c with a significance larger than 3 sigma, based on the combination of statistical and systematic uncertainties. The v(2) magnitude tends to decrease towards more central collisions and with increasing pT. It becomes compatible with zero in the interval 6 < p(T)< 10 GeV/c. The results are compared to models describing the interaction of heavy quarks and open heavy-flavour hadrons with the high-density medium formed in high-energy heavy-ion collisions. (C) 2015 CERN for the benefit of the ALICE Collaboration. Published by Elsevier B.V.

引用

页码：41 / 56

页数：16

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