ψ(2S) Suppression in Pb-Pb Collisions at the LHC

被引：4

作者：

Acharya, S. ^{[139
]}

Adamova, D. ^{[97
]}

Adler, A. ^{[80
]}

Rinella, G. Aglieri ^{[43
]}

Agnello, M. ^{[38
,39
]}

Agrawal, N. ^{[61
]}

Ahammed, Z. ^{[146
]}

Ahmad, S. ^{[17
]}

Ahn, S. U. ^{[81
]}

Ahuja, I. ^{[48
]}

Akindinov, A. ^{[154
]}

Al-Turany, M. ^{[110
,111
]}

Aleksandrov, D. ^{[154
]}

Alessandro, B. ^{[66
]}

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

Alfaro Molina, R. ^{[77
]}

Ali, B. ^{[17
]}

Alici, A. ^{[30
,31
]}

Alizadehvandchali, N. ^{[128
]}

Alkin, A. ^{[43
]}

Alme, J. ^{[22
]}

Alocco, G. ^{[62
]}

Alt, T. ^{[74
]}

Altsybeev, I. ^{[154
]}

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

Andrei, C. ^{[56
]}

Andronic, A. ^{[149
]}

Anguelov, V. ^{[106
]}

Antinori, F. ^{[64
]}

Antonioli, P. ^{[61
]}

Apadula, N. ^{[85
]}

Aphecetche, L. ^{[117
]}

Appelshaeuser, H. ^{[74
]}

Arata, C. ^{[84
]}

Arcelli, S. ^{[30
,31
]}

Aresti, M. ^{[62
]}

Arnaldi, R. ^{[66
]}

Arsene, I. C. ^{[21
]}

Arslandok, M. ^{[151
]}

Augustinus, A. ^{[43
]}

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

Azmi, M. D. ^{[17
]}

Badala, A. ^{[63
]}

Bae, J. ^{[118
]}

Baek, Y. W. ^{[51
]}

Bai, X. ^{[132
]}

Bailhache, R. ^{[74
]}

Bailung, Y. ^{[58
]}

Balbino, A. ^{[38
,39
]}

Baldisseri, A. ^{[142
]}

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, Kolkata, India

[6] Calif Polytech State Univ San Luis Obispo, San Luis Obispo, CA 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] 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 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 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] Grp Coll INFN, Salerno, Italy

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

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

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

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

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

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

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

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

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

[47] Sofia Univ, Fac Phys, Sofia, Bulgaria

[48] Safarik Univ, Fac Sci, Kosice, Slovakia

[49] Goethe Univ Frankfurt, Frankfurt Inst Adv Studies, Frankfurt, Germany

[50] Fudan Univ, Shanghai, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 2024年 / 132卷 / 04期

基金：

中国国家自然科学基金; 奥地利科学基金会; 美国国家科学基金会; 新加坡国家研究基金会; 英国科学技术设施理事会; 日本学术振兴会; 欧盟地平线“2020”; 美国能源部; 瑞典研究理事会; 欧洲研究理事会; 芬兰科学院; 巴西圣保罗研究基金会;

关键词：

PP COLLISIONS; QUARKONIUM PRODUCTION; J/PSI SUPPRESSION; CHARMONIUM; RAPIDITY; PROMPT; QCD;

D O I：

10.1103/PhysRevLett.132.042301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The production of the psi(2S) charmonium state was measured with ALICE in Pb-Pb collisions at root s(NN) = 5.02 TeV, in the dimuon decay channel. A significant signal was observed for the first time at LHC energies down to zero transverse momentum, at forward rapidity (2.5 < y < 4). The measurement of the ratio of the inclusive production cross sections of the psi(2S) and J/psi resonances is reported as a function of the centrality of the collisions and of transverse momentum, in the region p(T) < 12 GeV/c. The results are compared with the corresponding measurements in pp collisions, by forming the double ratio [sigma(psi(2S)) /sigma(J/psi)](Pb-Pb)/[sigma(psi(2S)) /sigma(J/psi)](pp). It is found that in Pb-Pb collisions the psi(2S) is suppressed by a factor of similar to 2 with respect to the J/psi. The psi(2S) nuclear modification factor R-AA was also obtained as a function of both centrality and p(T). The results show that the psi(2S) resonance yield is strongly suppressed in Pb-Pb collisions, by a factor of up to similar to 3 with respect to pp. Comparisons of cross section ratios with previous Super Proton Synchrotron findings by the NA50 experiment and of R-AA with higher-p(T) results at LHC energy are also reported. These results and the corresponding comparisons with calculations of transport and statistical models address questions on the presence and properties of charmonium states in the quark-gluon plasma formed in nuclear collisions at the LHC.

引用

页数：13

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