Production of charged pions, kaons, and (anti-)protons in Pb-Pb and inelastic pp collisions at √sNN=5.02 TeV

被引：160

作者：

Acharya, S. ^{[155
]}

Adamova, D. ^{[106
]}

Adhya, S. P. ^{[155
]}

Adler, A. ^{[86
]}

Adolfsson, J. ^{[92
]}

Aggarwal, M. M. ^{[111
]}

Rinella, G. Aglieri ^{[47
]}

Agnello, M. ^{[33
,42
]}

Agrawal, N. ^{[12
,13
,61
,66
]}

Ahammed, Z. ^{[155
]}

Ahmad, S. ^{[20
]}

Ahn, S. U. ^{[88
]}

Akindinov, A. ^{[103
]}

Al-Turany, M. ^{[118
,119
]}

Alam, S. N. ^{[155
]}

Albuquerque, D. S. D. ^{[136
]}

Aleksandrov, D. ^{[99
]}

Alessandro, B. ^{[71
]}

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

Alfaro Molina, R. ^{[84
]}

Ali, B. ^{[20
]}

Ali, Y. ^{[18
]}

Alici, A. ^{[12
,13
,34
,35
,66
]}

Alkin, A. ^{[2
]}

Alme, J. ^{[25
]}

Alt, T. ^{[81
]}

Altenkamper, L. ^{[25
]}

Altsybeev, I ^{[126
]}

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

Andrei, C. ^{[60
]}

Andreou, D. ^{[47
]}

Andrews, H. A. ^{[123
]}

Andronic, A. ^{[158
]}

Angeletti, M. ^{[47
]}

Anguelov, V ^{[115
]}

Anson, C. ^{[19
]}

Anticic, T. ^{[120
]}

Antinori, F. ^{[69
]}

Antonioli, P. ^{[66
]}

Anwar, R. ^{[139
]}

Apadula, N. ^{[91
]}

Aphecetche, L. ^{[128
]}

Appelshaeuser, H. ^{[81
]}

Arcelli, S. ^{[34
,35
]}

Arnaldi, R. ^{[71
]}

Arratia, M. ^{[91
]}

Arsene, I. C. ^{[24
]}

Arslandok, M. ^{[115
]}

Augustinus, A. ^{[47
]}

Averbeck, R. ^{[118
,119
]}

机构：

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

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

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

[4] Ctr Astroparticle Phys & Space Sci CAPSS, Kolkata, W Bengal, 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] IN2P3, Ctr Calcul, Lyon, France

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

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

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

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

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

[14] Chicago State Univ, Chicago, IL USA

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

[16] Chonbuk Natl Univ, Jeonju, South Korea

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

[18] COMSATS Univ Islamabad, Islamabad, Pakistan

[19] Creighton Univ, Omaha, NE 68178 USA

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

[41] Grp Collegato INFN, Salerno, Italy

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

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

[44] INFN, Sez Torino, Alessandria, Italy

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

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

[47] CERN, European Org Nucl Res, 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：

PHYSICAL REVIEW C | 2020年 / 101卷 / 04期

基金：

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

关键词：

TRANSVERSE-MOMENTUM SPECTRA; MULTIPLICITY DEPENDENCE; NUCLEAR MODIFICATION; FLOW; QCD; HADRONIZATION; RECOGNITION; PERSPECTIVE; PARTICLES; HADRONS;

D O I：

10.1103/PhysRevC.101.044907

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：

Midrapidity production of pi(+/-), K-+/-, and (<(p))over bar>p measured by the ALICE experiment at the CERN Large Hadron Collider, in Pb-Pb and inelastic pp collisions at root s(NN) = 5.02 TeV, is presented. The invariant yields are measured over a wide transverse momentum (p(T)) range from hundreds of MeV/c up to 20 GeV/c. The results in Pb-Pb collisions are presented as a function of the collision centrality, in the range 0-90%. The comparison of the P-T -integrated particle ratios, i.e., proton-to-pion (p/pi) and kaon-to-pion (K/pi) ratios, with similar measurements in Pb-Pb collisions at root s(NN) = 2.76 TeV show no significant energy dependence. Blast-wave fits of the p(T) spectra indicate that in the most central collisions radial flow is slightly larger at 5.02 TeV with respect to 2.76 TeV. Particle ratios (p/pi, K/pi) as a function of p(T) show pronounced maxima at p(T) approximate to 3 GeV/c in central Pb-Pb collisions. At high p(T) , particle ratios at 5.02 TeV are similar to those measured in pp collisions at the same energy and in Pb-Pb collisions at root sNN = 2.76 TeV. Using the pp reference spectra measured at the same collision energy of 5.02 TeV, the nuclear modification factors for the different particle species are derived. Within uncertainties, the nuclear modification factor is particle species independent for high p(T) and compatible with measurements at root sNN = 2.76 TeV. The results are compared to state-of-the-art model calculations, which are found to describe the observed trends satisfactorily.

引用

页数：27

共 50 条

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