Suppression of Excited States Relative to the Ground State in Pb-Pb Collisions at s NN=5.02 TeV

CMS Collaboration

doi:10.1103/PhysRevLett.120.142301

Suppression of Excited States Relative to the Ground State in Pb-Pb Collisions at s NN=5.02 TeV

CMS Collaboration

A. Alikhanian Yerevan Institute of Physics
Austrian Academy of Sciences
Universidade Estadual de Campinas
Belarusian State University
University of Antwerp
Vrije Universiteit Brussel
Texas A&M University
Kyungpook National University
Université libre de Bruxelles
Universidade Federal de Pelotas
Ghent University
Université catholique de Louvain
Universite de Mons
Centro Brasileiro de Pesquisas Físicas
Universidade do Estado do Rio de Janeiro
Universidad de Antioquia
Universidade Estadual Paulista Júlio de Mesquita Filho
Universidade Federal do ABC
Bulgarian Academy of Sciences
Sofia University St. Kliment Ohridski
Beihang University
Joint Institute for Nuclear Research
CAS - Institute of High Energy Physics
Peking University
Universidad de los Andes Colombia
Suez University
University of Split
Ruder Boskovic Institute
University of Cyprus
Charles University
The British University in Egypt
Universidad San Francisco de Quito
Academy of Scientific Research and Technology
Ain Shams University
Helwan University
Université de Haute-Alsace
Lomonosov Moscow State University
National Institute of Chemical Physics and Biophysics, Tallinn
University of Helsinki
Helsinki Institute of Physics
Lappeenranta-Lahti University of Technology
Université Paris-Saclay
Université de Strasbourg
CERN
CNRS/IN2P3-Univ Mediterranee
Universite Claude Bernard Lyon 1
RWTH Aachen University
Georgian Technical University
Ivane Javakhishvili Tbilisi State University
University of Hamburg
German Electron Synchrotron
Brandenburg University of Technology
Institute for Nuclear Research
Eötvös Loránd University
Karlsruhe Institute of Technology
Demokritos National Centre for Scientific Research
National and Kapodistrian University of Athens
National Technical University of Athens
University of Ioannina
Wigner Research Centre for Physics
University of Debrecen
Indian Institute of Technology Bhubaneswar
Visva-Bharati University
Indian Institute of Science Bangalore
National Institute of Science Education and Research
Indian Institute of Science Education and Research Bhopal
Institute of Physics Bhubaneswar
University of Ruhuna
Isfahan University of Technology
Panjab University
University of Delhi
Saha Institute of Nuclear Physics
Indian Institute of Technology Madras
Bhabha Atomic Research Centre
Tata Institute of Fundamental Research
Yazd University
Indian Institute of Science Education and Research Pune
Institute for Research for Fundamental Sciences
Islamic Azad University
University of Siena
Laboratori Nazionali di Legnaro
University College Dublin
National Institute for Nuclear Physics
University of Bari
Polytechnic University of Bari
University of Bologna
University of Catania
University of Florence
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University of Milan - Bicocca
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International Islamic University Malaysia
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Scuola Normale Superiore di Pisa
Malaysian Nuclear Agency
University of Rome La Sapienza
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University of Trieste
Jeonbuk National University
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Hanyang University
Korea University
Seoul National University
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Consejo Nacional de Ciencia y Tecnologia Mexico
Warsaw University of Technology
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Universidad Iberoamericana (UIA)
Benemerita Universidad Autonoma de Puebla
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The University of Auckland
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Moscow Institute of Physics and Technology
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Institute for High Energy Physics
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University of Bristol
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Abstract

The relative yields of mesons produced in pp and Pb-Pb collisions at sNN=5.02 TeV and reconstructed via the dimuon decay channel are measured using data collected by the CMS experiment. Double ratios are formed by comparing the yields of the excited states, (2S) and (3S), to the ground state, (1S), in both Pb-Pb and pp collisions at the same center-of-mass energy. The double ratios, [(nS)/(1S)]Pb-Pb/[(nS)/(1S)]pp, are measured to be 0.308±0.055(stat)±0.019(syst) for the (2S) and less than 0.26 at 95% confidence level for the (3S). No significant (3S) signal is found in the Pb-Pb data. The double ratios are studied as a function of collision centrality, as well as transverse momentum and rapidity. No significant dependencies are observed.

Original language	English
Article number	142301
Journal	Physical Review Letters
Volume	120
Issue number	14
DOIs	https://doi.org/10.1103/PhysRevLett.120.142301
Publication status	Published - 2 Apr 2018
Externally published	Yes

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10.1103/PhysRevLett.120.142301

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@article{f6e7039646584aeb847d7cc3cf118475,

title = "Suppression of Excited States Relative to the Ground State in Pb-Pb Collisions at s NN=5.02 TeV",

abstract = "The relative yields of mesons produced in pp and Pb-Pb collisions at sNN=5.02 TeV and reconstructed via the dimuon decay channel are measured using data collected by the CMS experiment. Double ratios are formed by comparing the yields of the excited states, (2S) and (3S), to the ground state, (1S), in both Pb-Pb and pp collisions at the same center-of-mass energy. The double ratios, [(nS)/(1S)]Pb-Pb/[(nS)/(1S)]pp, are measured to be 0.308±0.055(stat)±0.019(syst) for the (2S) and less than 0.26 at 95\% confidence level for the (3S). No significant (3S) signal is found in the Pb-Pb data. The double ratios are studied as a function of collision centrality, as well as transverse momentum and rapidity. No significant dependencies are observed.",

author = "\{CMS Collaboration\} and Sirunyan, \{A. M.\} and A. Tumasyan and W. Adam and E. Asilar and T. Bergauer and J. Brandstetter and E. Brondolin and M. Dragicevic and J. Er{\"o} and M. Flechl and M. Friedl and R. Fr{\"u}hwirth and Ghete, \{V. M.\} and C. Hartl and N. H{\"o}rmann and J. Hrubec and M. Jeitler and A. K{\"o}nig and I. Kr{\"a}tschmer and D. Liko and T. Matsushita and I. Mikulec and D. Rabady and N. Rad and B. Rahbaran and H. Rohringer and J. Schieck and J. Strauss and W. Waltenberger and Wulz, \{C. E.\} and O. Dvornikov and V. Makarenko and V. Mossolov and \{Suarez Gonzalez\}, J. and V. Zykunov and N. Shumeiko and S. Alderweireldt and \{De Wolf\}, \{E. A.\} and X. Janssen and J. Lauwers and \{Van De Klundert\}, M. and \{Van Haevermaet\}, H. and \{Van Mechelen\}, P. and \{Van Remortel\}, N. and \{Van Spilbeeck\}, A. and \{Abu Zeid\}, S. and F. Blekman and J. D'Hondt and N. Daci and O. Bouhali",

note = "Publisher Copyright: {\textcopyright} 2018 CERN.",

year = "2018",

month = apr,

day = "2",

doi = "10.1103/PhysRevLett.120.142301",

language = "English",

volume = "120",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "14",

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TY - JOUR

T1 - Suppression of Excited States Relative to the Ground State in Pb-Pb Collisions at s NN=5.02 TeV

AU - CMS Collaboration

AU - Sirunyan, A. M.

AU - Tumasyan, A.

AU - Adam, W.

AU - Asilar, E.

AU - Bergauer, T.

AU - Brandstetter, J.

AU - Brondolin, E.

AU - Dragicevic, M.

AU - Erö, J.

AU - Flechl, M.

AU - Friedl, M.

AU - Frühwirth, R.

AU - Ghete, V. M.

AU - Hartl, C.

AU - Hörmann, N.

AU - Hrubec, J.

AU - Jeitler, M.

AU - König, A.

AU - Krätschmer, I.

AU - Liko, D.

AU - Matsushita, T.

AU - Mikulec, I.

AU - Rabady, D.

AU - Rad, N.

AU - Rahbaran, B.

AU - Rohringer, H.

AU - Schieck, J.

AU - Strauss, J.

AU - Waltenberger, W.

AU - Wulz, C. E.

AU - Dvornikov, O.

AU - Makarenko, V.

AU - Mossolov, V.

AU - Suarez Gonzalez, J.

AU - Zykunov, V.

AU - Shumeiko, N.

AU - Alderweireldt, S.

AU - De Wolf, E. A.

AU - Janssen, X.

AU - Lauwers, J.

AU - Van De Klundert, M.

AU - Van Haevermaet, H.

AU - Van Mechelen, P.

AU - Van Remortel, N.

AU - Van Spilbeeck, A.

AU - Abu Zeid, S.

AU - Blekman, F.

AU - D'Hondt, J.

AU - Daci, N.

AU - Bouhali, O.

PY - 2018/4/2

Y1 - 2018/4/2

N2 - The relative yields of mesons produced in pp and Pb-Pb collisions at sNN=5.02 TeV and reconstructed via the dimuon decay channel are measured using data collected by the CMS experiment. Double ratios are formed by comparing the yields of the excited states, (2S) and (3S), to the ground state, (1S), in both Pb-Pb and pp collisions at the same center-of-mass energy. The double ratios, [(nS)/(1S)]Pb-Pb/[(nS)/(1S)]pp, are measured to be 0.308±0.055(stat)±0.019(syst) for the (2S) and less than 0.26 at 95% confidence level for the (3S). No significant (3S) signal is found in the Pb-Pb data. The double ratios are studied as a function of collision centrality, as well as transverse momentum and rapidity. No significant dependencies are observed.

AB - The relative yields of mesons produced in pp and Pb-Pb collisions at sNN=5.02 TeV and reconstructed via the dimuon decay channel are measured using data collected by the CMS experiment. Double ratios are formed by comparing the yields of the excited states, (2S) and (3S), to the ground state, (1S), in both Pb-Pb and pp collisions at the same center-of-mass energy. The double ratios, [(nS)/(1S)]Pb-Pb/[(nS)/(1S)]pp, are measured to be 0.308±0.055(stat)±0.019(syst) for the (2S) and less than 0.26 at 95% confidence level for the (3S). No significant (3S) signal is found in the Pb-Pb data. The double ratios are studied as a function of collision centrality, as well as transverse momentum and rapidity. No significant dependencies are observed.

UR - https://www.scopus.com/pages/publications/85045020611

U2 - 10.1103/PhysRevLett.120.142301

DO - 10.1103/PhysRevLett.120.142301

M3 - Article

C2 - 29694144

AN - SCOPUS:85045020611

SN - 0031-9007

VL - 120

JO - Physical Review Letters

JF - Physical Review Letters

IS - 14

M1 - 142301

ER -

Suppression of Excited States Relative to the Ground State in Pb-Pb Collisions at s NN=5.02 TeV

Abstract

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