Observation of the ϒ(3S) Meson and Suppression of ϒ States in Pb-Pb Collisions at sqrt[s_{NN}]=5.02  TeV

CMS Collaboration

doi:10.1103/PhysRevLett.133.022302

Observation of the ϒ(3S) Meson and Suppression of ϒ States in Pb-Pb Collisions at sqrt[s_{NN}]=5.02 TeV

CMS Collaboration

Yerevan Physics Institute
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Institut für Hochenergiephysik
Vienna University of Technology
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Technology and Maritime Transport
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Universidade Federal do Rio Grande do Sul
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The University of the State of Amazonas
São Paulo State University
Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences
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Universidad de Tarapacá
Beihang University
University of Chinese Academy of Sciences
Tsinghua University
Nanjing Normal University
University of Iowa
Institute of High Energy Physics, Chinese Academy of Sciences
State Key Laboratory of Nuclear Physics and Technology
Sun Yat-Sen University
Fudan University
Zhejiang University
Universidad de Los Andes, Colombia
Universidad de Antioquia
Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, University of Split
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Ruđer Bošković Institute
European Organization for Nuclear Research
University of Cyprus
Charles University
Escuela Politecnica Nacional
Universidad San Francisco de Quito
Egyptian Network of High Energy Physics
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Sharif University of Technology
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University of Science and Technology of Mazandaran, Behshahr
University College Dublin
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Politecnico di Bari
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ENEA Climate Modeling and Impacts
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Universidad Iberoamericana
Benemerita Universidad Autonoma de Puebla
University of Montenegro
Quaid-i-Azam University
Agh University of Science and Technology Faculty of Computer Science
National Centre for Nuclear Research
University of Warsaw
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University of Belgrade
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Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT)
Universidad Autónoma de Madrid
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CSIC-Univ. Cantabria
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Eastern University, Sri Lanka
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ETH Zurich
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Résumé

The production of ϒ(2S) and ϒ(3S) mesons in lead-lead (Pb-Pb) and proton-proton (pp) collisions is studied in their dimuon decay channel using the CMS detector at the LHC. The ϒ(3S) meson is observed for the first time in Pb-Pb collisions, with a significance above 5 standard deviations. The ratios of yields measured in Pb-Pb and pp collisions are reported for both the ϒ(2S) and ϒ(3S) mesons, as functions of transverse momentum and Pb-Pb collision centrality. These ratios, when appropriately scaled, are significantly less than unity, indicating a suppression of ϒ yields in Pb-Pb collisions. This suppression increases from peripheral to central Pb-Pb collisions. Furthermore, the suppression is stronger for ϒ(3S) mesons compared to ϒ(2S) mesons, extending the pattern of sequential suppression of quarkonium states in nuclear collisions previously seen for the J/ψ, ψ(2S), ϒ(1S), and ϒ(2S) mesons.

langue originale	Anglais
Numéro d'article	022302
journal	Physical Review Letters
Volume	133
Numéro de publication	2
Les DOIs	https://doi.org/10.1103/PhysRevLett.133.022302
état	Publié - 12 juil. 2024

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10.1103/PhysRevLett.133.022302

Contient cette citation

@article{31274344f12c4730971d5b8b8eec7637,

title = "Observation of the ϒ(3S) Meson and Suppression of ϒ States in Pb-Pb Collisions at sqrt[s\_\{NN\}]=5.02 TeV",

abstract = "The production of ϒ(2S) and ϒ(3S) mesons in lead-lead (Pb-Pb) and proton-proton (pp) collisions is studied in their dimuon decay channel using the CMS detector at the LHC. The ϒ(3S) meson is observed for the first time in Pb-Pb collisions, with a significance above 5 standard deviations. The ratios of yields measured in Pb-Pb and pp collisions are reported for both the ϒ(2S) and ϒ(3S) mesons, as functions of transverse momentum and Pb-Pb collision centrality. These ratios, when appropriately scaled, are significantly less than unity, indicating a suppression of ϒ yields in Pb-Pb collisions. This suppression increases from peripheral to central Pb-Pb collisions. Furthermore, the suppression is stronger for ϒ(3S) mesons compared to ϒ(2S) mesons, extending the pattern of sequential suppression of quarkonium states in nuclear collisions previously seen for the J/ψ, ψ(2S), ϒ(1S), and ϒ(2S) mesons.",

author = "\{CMS Collaboration\} and A. Tumasyan and W. Adam and Andrejkovic, \{J. W.\} and T. Bergauer and S. Chatterjee and K. Damanakis and M. Dragicevic and \{Escalante Del Valle\}, A. and Hussain, \{P. S.\} and M. Jeitler and N. Krammer and L. Lechner and D. Liko and I. Mikulec and P. Paulitsch and Pitters, \{F. M.\} and J. Schieck and R. Sch{\"o}fbeck and D. Schwarz and S. Templ and W. Waltenberger and Wulz, \{C. E.\} and Darwish, \{M. R.\} and T. Janssen and T. Kello and \{Rejeb Sfar\}, H. and \{Van Mechelen\}, P. and Bols, \{E. S.\} and J. D{\textquoteright}Hondt and \{De Moor\}, A. and M. Delcourt and \{El Faham\}, H. and S. Lowette and S. Moortgat and A. Morton and D. M{\"u}ller and Sahasransu, \{A. R.\} and S. Tavernier and \{Van Doninck\}, W. and D. Vannerom and A. Cappati and O. Davignon and \{Granier de Cassagnac\}, R. and M. Nguyen and C. Ochando and R. Salerno and A. Zabi and A. Zghiche and G. Boldrini and \{De Wit\}, A.",

note = "Publisher Copyright: {\textcopyright} 2024 CERN, for the CMS Collaboration.",

year = "2024",

month = jul,

day = "12",

doi = "10.1103/PhysRevLett.133.022302",

language = "English",

volume = "133",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "2",

}

TY - JOUR

T1 - Observation of the ϒ(3S) Meson and Suppression of ϒ States in Pb-Pb Collisions at sqrt[s_{NN}]=5.02 TeV

AU - CMS Collaboration

AU - Tumasyan, A.

AU - Adam, W.

AU - Andrejkovic, J. W.

AU - Bergauer, T.

AU - Chatterjee, S.

AU - Damanakis, K.

AU - Dragicevic, M.

AU - Escalante Del Valle, A.

AU - Hussain, P. S.

AU - Jeitler, M.

AU - Krammer, N.

AU - Lechner, L.

AU - Liko, D.

AU - Mikulec, I.

AU - Paulitsch, P.

AU - Pitters, F. M.

AU - Schieck, J.

AU - Schöfbeck, R.

AU - Schwarz, D.

AU - Templ, S.

AU - Waltenberger, W.

AU - Wulz, C. E.

AU - Darwish, M. R.

AU - Janssen, T.

AU - Kello, T.

AU - Rejeb Sfar, H.

AU - Van Mechelen, P.

AU - Bols, E. S.

AU - D’Hondt, J.

AU - De Moor, A.

AU - Delcourt, M.

AU - El Faham, H.

AU - Lowette, S.

AU - Moortgat, S.

AU - Morton, A.

AU - Müller, D.

AU - Sahasransu, A. R.

AU - Tavernier, S.

AU - Van Doninck, W.

AU - Vannerom, D.

AU - Cappati, A.

AU - Davignon, O.

AU - Granier de Cassagnac, R.

AU - Nguyen, M.

AU - Ochando, C.

AU - Salerno, R.

AU - Zabi, A.

AU - Zghiche, A.

AU - Boldrini, G.

AU - De Wit, A.

PY - 2024/7/12

Y1 - 2024/7/12

N2 - The production of ϒ(2S) and ϒ(3S) mesons in lead-lead (Pb-Pb) and proton-proton (pp) collisions is studied in their dimuon decay channel using the CMS detector at the LHC. The ϒ(3S) meson is observed for the first time in Pb-Pb collisions, with a significance above 5 standard deviations. The ratios of yields measured in Pb-Pb and pp collisions are reported for both the ϒ(2S) and ϒ(3S) mesons, as functions of transverse momentum and Pb-Pb collision centrality. These ratios, when appropriately scaled, are significantly less than unity, indicating a suppression of ϒ yields in Pb-Pb collisions. This suppression increases from peripheral to central Pb-Pb collisions. Furthermore, the suppression is stronger for ϒ(3S) mesons compared to ϒ(2S) mesons, extending the pattern of sequential suppression of quarkonium states in nuclear collisions previously seen for the J/ψ, ψ(2S), ϒ(1S), and ϒ(2S) mesons.

AB - The production of ϒ(2S) and ϒ(3S) mesons in lead-lead (Pb-Pb) and proton-proton (pp) collisions is studied in their dimuon decay channel using the CMS detector at the LHC. The ϒ(3S) meson is observed for the first time in Pb-Pb collisions, with a significance above 5 standard deviations. The ratios of yields measured in Pb-Pb and pp collisions are reported for both the ϒ(2S) and ϒ(3S) mesons, as functions of transverse momentum and Pb-Pb collision centrality. These ratios, when appropriately scaled, are significantly less than unity, indicating a suppression of ϒ yields in Pb-Pb collisions. This suppression increases from peripheral to central Pb-Pb collisions. Furthermore, the suppression is stronger for ϒ(3S) mesons compared to ϒ(2S) mesons, extending the pattern of sequential suppression of quarkonium states in nuclear collisions previously seen for the J/ψ, ψ(2S), ϒ(1S), and ϒ(2S) mesons.

U2 - 10.1103/PhysRevLett.133.022302

DO - 10.1103/PhysRevLett.133.022302

M3 - Article

AN - SCOPUS:85199540386

SN - 0031-9007

VL - 133

JO - Physical Review Letters

JF - Physical Review Letters

IS - 2

M1 - 022302

ER -

Observation of the ϒ(3S) Meson and Suppression of ϒ States in Pb-Pb Collisions at sqrt[s_{NN}]=5.02 TeV

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