Production of muons from heavy-flavour hadron decays at high transverse momentum in Pb-Pb collisions at ,√SNN=5.02 and 2.76 TeV

被引：8

作者：

Acharya, S. ^{[158
]}

Adamova, D. ^{[109
]}

Adler, A. ^{[87
]}

Adolfsson, J. ^{[94
]}

Rinella, G. Aglieri ^{[47
]}

Agnello, M. ^{[32
,41
]}

Agrawal, N. ^{[11
,12
,67
]}

Ahammed, Z. ^{[158
]}

Ahmad, S. ^{[19
]}

Ahn, S. U. ^{[89
]}

Akbar, Z. ^{[64
]}

Akindinov, A. ^{[106
]}

Al-Turany, M. ^{[121
,122
]}

Albuquerque, D. S. D. ^{[137
]}

Aleksandrov, D. ^{[102
]}

Alessandro, B. ^{[72
]}

Alfanda, H. M. ^{[7
]}

Alfaro Molina, R. ^{[84
]}

Ali, B. ^{[19
]}

Ali, Y. ^{[17
]}

Alici, A. ^{[11
,12
,33
,34
,67
]}

Alizadehvandchali, N. ^{[140
]}

Alkin, A. ^{[47
]}

Alme, J. ^{[24
]}

Alt, T. ^{[81
]}

Altenkamper, L. ^{[24
]}

Altsybeev, I ^{[128
]}

Anaam, M. N. ^{[7
]}

Andrei, C. ^{[61
]}

Andreou, D. ^{[104
]}

Andronic, A. ^{[161
]}

Angeletti, M. ^{[47
]}

Anguelov, V ^{[118
]}

Anticic, T. ^{[123
]}

Antinori, F. ^{[70
]}

Antonioli, P. ^{[67
]}

Apadula, N. ^{[93
]}

Aphecetche, L. ^{[130
]}

Appelshaeuser, H. ^{[81
]}

Arcelli, S. ^{[33
,34
]}

Arnaldi, R. ^{[72
]}

Arratia, M. ^{[93
]}

Arsene, I. C. ^{[23
]}

Arslandok, M. ^{[118
,163
]}

Augustinus, A. ^{[47
]}

Averbeck, R. ^{[121
,122
]}

Aziz, S. ^{[91
]}

Azmi, M. D. ^{[19
]}

Badala, A. ^{[69
]}

Baek, Y. W. ^{[54
]}

机构：

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

[2] Natl Acad Sci Ukraine, Bogolyubov Inst Theoret Phys, Kiev, Ukraine

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

[4] Bose Inst, Ctr Astroparticle Phys & Space Sci CAPSS, Kolkata, India

[5] Budker Inst Nucl Phys, Novosibirsk, Russia

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

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

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

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

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

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

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

[13] Chicago State Univ, Chicago, IL USA

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

[15] Chungbuk Natl Univ, Cheongju, South Korea

[16] Comenius Univ, Fac Math Phys & Informat, Bratislava, Slovakia

[17] COMSATS Univ Islamabad, Islamabad, Pakistan

[18] Creighton Univ, Omaha, NE 68178 USA

[19] Aligarh Muslim Univ, Dept Phys, Aligarh, Uttar Pradesh, India

[20] Pusan Natl Univ, Dept Phys, Pusan, South Korea

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

[22] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

[39] Univ Salerno, Dipartimento Fis ER Caianiello, Salerno, Italy

[40] Grp Collegato INFN, Salerno, Italy

[41] Politecn Torino, Dipartimento DISAT, Turin, Italy

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

[43] Ist Nazl Fis Nucl, Sez Torino, Alessandria, Italy

[44] Univ Messina, Dipartimento Sci MIFT, Messina, Italy

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

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

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

[48] Univ Split, Fac Elect Engn Mech Engn & Naval Architecture, Split, Croatia

[49] Western Norway Univ Appl Sci, Fac Engn & Sci, Bergen, Norway

[50] Czech Tech Univ, Fac Nucl Sci & Phys Engn, Prague, Czech Republic

来源：

PHYSICS LETTERS B | 2021年 / 820卷

基金：

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

关键词：

RADIATIVE ENERGY-LOSS; QCD; SUPPRESSION; MESONS;

D O I：

10.1016/j.physletb.2021.136558

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Measurements of the production of muons from heavy-flavour hadron decays in Pb-Pb collisions at root s(NN) = 5.02 and 2.76 TeV using the ALICE detector at the LHC are reported. The nuclear modification factor R-AA at root s(NN) = 5.02 TeV is measured at forward rapidity (2.5 < y < 4) as a function of transverse momentum p(T) in central, semi-central, and peripheral collisions over a wide p(T) interval, 3 < p(T) < 20 GeV/c, in which muons from beauty-hadron decays are expected to take over from charm as the dominant source at high p(T) (p(T) > 7 GeV/c). The R-AA shows an increase of the suppression of the yields of muons from heavy-flavour hadron decays with increasing centrality. A suppression by a factor of about three is observed in the 10% most central collisions. The R-AA at root s(NN) = 5.02 TeV is similar to that at root s(NN) = 2.76 TeV. The precise R-AA measurements have the potential to distinguish between model predictions implementing different mechanisms of parton energy loss in the high-density medium formed in heavy-ion collisions. They place important constraints for the understanding of the heavy-quark interaction with the hot and dense QCD medium. (C) 2021 European Organization for Nuclear Research, ALICE. Published by Elsevier B.V.

引用

页数：15

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