Photoproduction of low-pT J/ψ from peripheral to central Pb-Pb collisions at 5.02 TeV

被引:6
作者
Acharya, S. [136 ,144 ]
Adamova, D. [95 ]
Adler, A. [79 ]
Rinella, G. Aglieri [42 ]
Agnello, M. [37 ,38 ]
Agrawal, N.
Ahammed, Z. [144 ]
Ahmad, S. [16 ]
Ahn, S. U. [80 ]
Ahuja, I. [47 ]
Akindinov, A. [157 ]
Al-Turany, M. [109 ,110 ]
Aleksandrov, D. [157 ]
Alessandro, B. [65 ]
Alfanda, H. M. [7 ]
Molina, R. Alfaro [76 ]
Ali, B. [16 ]
Ali, Y. [14 ]
Alici, A. [29 ,30 ]
Alizadehvandchali, N. [125 ]
Alkin, A. [42 ]
Alme, J. [21 ]
Alocco, G. [61 ]
Alt, T. [73 ]
Altsybeev, I. [157 ]
Anaam, M. N. [7 ]
Andrei, C. [55 ]
Andronic, A. [147 ]
Anguelov, V. [105 ]
Antinori, F. [63 ]
Antonioli, P. [60 ]
Anuj, C. [16 ]
Apadula, N. [83 ]
Aphecetche, L. [115 ]
Appelshauser, H. [73 ]
Arcelli, S. [29 ,30 ]
Arnaldi, R. [65 ]
Arsene, I. C. [20 ]
Arslandok, M. [149 ]
Augustinus, A. [42 ]
Averbeck, R. [109 ,110 ]
Aziz, S. [140 ]
Azmi, M. D. [16 ]
Badala, A. [62 ]
Baek, Y. W. [50 ]
Bai, X. [109 ,110 ]
Bailhache, R. [73 ]
Bailung, Y. [57 ]
Bala, R. [100 ]
Balbino, A. [37 ,38 ]
机构
[1] Yerevan Phys Inst Fdn, IA Alikhanyan Natl Sci Lab, Yerevan, Armenia
[2] AGH Univ Krakow, Krakow, Poland
[3] Natl Acad Sci Ukraine, Bogolyubov Inst Theoret Phys, Kiev, Ukraine
[4] Bose Inst, Dept Phys, Kolkata, India
[5] 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] Chicago State Univ, Chicago, IL USA
[11] China Inst Atom Energy, Beijing, Peoples R China
[12] Chungbuk Natl Univ, Cheongju, South Korea
[13] Comenius Univ, Fac Math Phys & Informat, Bratislava, Slovakia
[14] COMSATS Univ Islamabad, Islamabad, Pakistan
[15] Creighton Univ, Omaha, NE USA
[16] Aligarh Muslim Univ, Dept Phys, Aligarh, Uttar Pradesh, India
[17] Pusan Natl Univ, Dept Phys, Pusan, South Korea
[18] Sejong Univ, Dept Phys, Seoul, South Korea
[19] Univ Calif Berkeley, Dept Phys, Berkeley, CA USA
[20] Univ Oslo, Dept Phys, Oslo, Norway
[21] Univ Bergen, Dept Phys & Technol, Bergen, Norway
[22] Univ Pavia, Dipartimento Fis, Pavia, Italy
[23] Univ Cagliari, Dipartimento Fis, Cagliari, Italy
[24] Sezione Ist Nazl Fis Nucl, Cagliari, Italy
[25] Univ Trieste, Dipartimento Fis, Trieste, Italy
[26] Sezione Ist Nazl Fis Nucl, Trieste, Italy
[27] Univ Turin, Dipartimento Fis, Turin, Italy
[28] Sezione Ist Nazl Fis Nucl, Turin, Italy
[29] Univ Bologna, Dipartimento Fis & Astron, Bologna, Italy
[30] Sezione Ist Nazl Fis Nucl, Bologna, Italy
[31] Univ Catania, Dipartimento Fis & Astron, Catania, Italy
[32] Sezione Ist Nazl Fis Nucl, Catania, Italy
[33] Univ Padua, Dipartimento Fis & Astron, Padua, Italy
[34] Sezione Ist Nazl Fis Nucl, Padua, Italy
[35] Univ Salerno, Dipartimento Fis ER Caianiello, Salerno, Italy
[36] Grp Collegato INFN, Salerno, Italy
[37] Politecn Torino, Dipartimento DISAT, Turin, Italy
[38] Sezione Ist Nazl Fis Nucl, 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
新加坡国家研究基金会; 奥地利科学基金会; 英国科学技术设施理事会; 中国国家自然科学基金; 芬兰科学院; 瑞典研究理事会; 美国能源部; 日本学术振兴会; 欧盟地平线“2020”; 巴西圣保罗研究基金会; 美国国家科学基金会; 欧洲研究理事会;
关键词
NUCLEAR MODIFICATION; COHERENT J/PSI; PPB COLLISIONS; MID-RAPIDITY; CHARMONIUM; SUPPRESSION; PROMPT; DEPENDENCE;
D O I
10.1016/j.physletb.2022.137467
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
An excess of J/psi yield at very low transverse momentum (p(T) < 0.3 GeV/c), originating from coherent photoproduction, is observed in peripheral and semicentral hadronic Pb-Pb collisions at a center-of-mass energy per nucleon pair of root s(NN) = 5.02 TeV. The measurement is performed with the ALICE detector via the dimuon decay channel at forward rapidity (2.5 < y < 4). The nuclear modification factor at very low and the coherent photoproduction cross section are measured as a function of centrality down to the 10% most central collisions. These results extend the previous study at root s(NN) = 2.76 TeV, confirming the clear excess over hadronic production in the range GeV/c and the centrality range 70-90%, and establishing an excess with a significance greater than 5s also in the 50-70% and 30-50% centrality ranges. The results are compared with earlier measurements at root s(NN) = 2.76 TeV and with different theoretical predictions aiming at describing how coherent photoproduction occurs in hadronic interactions with nuclear overlap. (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 SCOAP(3.)
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