Measurement of beauty-strange meson production in Pb-Pb collisions at √sNN=5.02 TeV via non-prompt Ds+ mesons

被引:5
作者
Acharya, S. [135 ,143 ]
Adamova, D. [95 ]
Adler, A. [79 ]
Rinella, G. Aglieri [42 ]
Agnello, M. [29 ,38 ]
Agrawal, N. [60 ]
Ahammed, Z. [143 ]
Ahmad, S. [17 ]
Ahn, S. U. [80 ]
Ahuja, I [47 ]
Akindinov, A. [151 ]
Al-Turany, M. [108 ]
Aleksandrov, D. [151 ]
Alessandro, B. [65 ]
Alfanda, H. M. [7 ]
Alfaro Molina, R. [76 ]
Ali, B. [17 ]
Ali, Y. [15 ]
Alici, A. [30 ,31 ]
Alizadehvandchali, N. [124 ]
Alkin, A. [42 ]
Alme, J. [22 ]
Alocco, G. [61 ]
Alt, T. [73 ]
Altsybeev, I [151 ]
Anaam, M. N. [7 ]
Andrei, C. [55 ]
Andronic, A. [146 ]
Anguelov, V [105 ]
Antinori, F. [63 ]
Antonioli, P. [60 ]
Anuj, C. [17 ]
Apadula, N. [83 ]
Aphecetche, L. [114 ]
Appelshaeuser, H. [73 ]
Arcelli, S. [30 ,31 ]
Arnaldi, R. [65 ]
Arsene, I. C. [21 ]
Arslandok, M. [148 ]
Augustinus, A. [42 ]
Averbeck, R. [108 ]
Aziz, S. [139 ]
Azmi, M. D. [17 ]
Badala, A. [62 ]
Baek, Y. W. [50 ]
Bai, X. [108 ]
Bailhache, R. [73 ]
Bailung, Y. [57 ]
Bala, R. [100 ]
Balbino, A. [29 ,38 ]
机构
[1] Yerevan Phys Inst Fdn, AI Alikhanyan Natl Sci Lab, Yerevan, Armenia
[2] AGH Univ Sci & Technol, Krakow, Poland
[3] Natl Acad Sci Ukraine, Bogolyubov Inst Theoret Phys, Kiev, Ukraine
[4] Bose Inst, Dept Phys, Kolkata, India
[5] Bose Inst, Ctr Astroparticle Phys & Space Sci CAPSS, Kolkata, India
[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, Yucatan, Mexico
[11] Chicago State Univ, Chicago, IL USA
[12] China Inst Atom Energy, Beijing, Peoples R China
[13] Chungbuk Natl Univ, Cheongju, South Korea
[14] Comenius Univ, Fac Math Phys & Informat, Bratislava, Slovakia
[15] COMSATS Univ Islamabad, Islamabad, Pakistan
[16] Creighton Univ, Omaha, NE 68178 USA
[17] Aligarh Muslim Univ, Dept Phys, Aligarh, Uttar Pradesh, India
[18] Pusan Natl Univ, Dept Phys, Pusan, South Korea
[19] Sejong Univ, Dept Phys, Seoul, South Korea
[20] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA
[21] Univ Oslo, Dept Phys, Oslo, Norway
[22] Univ Bergen, Dept Phys & Technol, Bergen, Norway
[23] Univ Pavia, Dipartimento Fis, Pavia, Italy
[24] Univ Cagliari, Dipartimento Fis, Cagliari, Italy
[25] Sezione Ist Nazl Fis Nucl, Cagliari, Italy
[26] Univ Trieste, Dipartimento Fis, Trieste, Italy
[27] Sezione Ist Nazl Fis Nucl, Trieste, Italy
[28] Univ Turin, Dipartimento Fis, Turin, Italy
[29] Sezione Ist Nazl Fis Nucl, Turin, Italy
[30] Univ Bologna, Dipartimento Fis & Astron, Bologna, Italy
[31] Sezione Ist Nazl Fis Nucl, Bologna, Italy
[32] Univ Catania, Dipartimento Fis & Astron, Catania, Italy
[33] Sezione Ist Nazl Fis Nucl, Catania, Italy
[34] Univ Padua, Dipartimento Fis & Astron, Padua, Italy
[35] Sezione Ist Nazl Fis Nucl, Padua, Italy
[36] Univ Salerno, Dipartimento Fis ER Caianiello, Salerno, Italy
[37] Ist Nazl Fis Nucl, Grp Coll, Salerno, Italy
[38] Politecn Torino, Dipartimento DISAT, Turin, Italy
[39] Univ Messina, Dipartimento Sci MIFT, Messina, Italy
[40] Dipartimento Interateneo Fis M Merlin, Bari, Italy
[41] Sezione Ist Nazl Fis Nucl, Bari, Italy
[42] European Org Nucl Res CERN, Geneva, Switzerland
[43] Univ Split, Fac Elect Engn Mech Engn & Naval Architecture, Split, Croatia
[44] Western Norway Univ Appl Sci, Fac Engn & Sci, Bergen, Norway
[45] Czech Tech Univ, Fac Nucl Sci & Phys Engn, Prague, Czech Republic
[46] Sofia Univ, Fac Phys, Sofia, Bulgaria
[47] Safarik Univ, Fac Sci, Kosice, Slovakia
[48] Goethe Univ Frankfurt, Frankfurt Inst Adv Studies, Frankfurt, Germany
[49] Fudan Univ, Shanghai, Peoples R China
[50] Gangneung Wonju Natl Univ, Kangnung, South Korea
基金
美国能源部; 巴西圣保罗研究基金会; 美国国家科学基金会; 欧盟地平线“2020”; 新加坡国家研究基金会; 英国科学技术设施理事会; 奥地利科学基金会; 中国国家自然科学基金; 日本学术振兴会; 瑞典研究理事会;
关键词
QUARK-GLUON PLASMA; ENERGY-LOSS; HEAVY-FLAVOR; SUPPRESSION; MATTER; QCD; PERSPECTIVE; J/PSI; HOT; PP;
D O I
10.1016/j.physletb.2022.137561
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The production yields of non-prompt D-s(+) smesons, namely D-s(+) smesons from beauty-hadron decays, were measured for the first time as a function of the transverse momentum (p(T)) at midrapidity (|y| < 0.5) in central and semi-central Pb-Pb collisions at a centre-of-mass energy per nucleon pair root s(NN)= 5.02TeVwith the ALICE experiment at the LHC. The D-s(+) smesons and their charge conjugates were reconstructed from the hadronic decay channel D-s(+) -> phi pi+, with phi -> K- K+, in the 4 < pT< 36GeV/cand 2 < pT< 24GeV/cintervals for the 0-10% and 30-50% centrality classes, respectively. The measured yields of non-prompt D-s(+) smesons are compared to those of prompt D-s(+) sand non-prompt D-0 mesons by calculating the ratios of the production yields in Pb-Pb collisions and the nuclear modification factor R-AA. The ratio between the R-AA of non-prompt D-s(+) sand prompt D-s(+) smesons, and that between the R-AA of non-prompt D-s(+) sand non-prompt D-0 mesons in central Pb-Pb collisions are found to be on average higher than unity in the 4 < p(T) < 12GeV/c interval with a statistical significance of about 1.6 sigma and 1.7 sigma, respectively. The measured R-AA ratios are compared with the predictions of theoretical models of heavy-quark transport in a hydrodynamically expanding QGP that incorporate hadronisation via quark recombination. (c) 2022 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3.
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