Observation of the Rare Decay of the η Meson to Four Muons

CMS Collaboration

doi:10.1103/PhysRevLett.131.091903

Observation of the Rare Decay of the η Meson to Four Muons

CMS Collaboration

Física

A. Alikhanian Yerevan Institute of Physics
Yerevan State University
Institut für Hochenergiephysik der OeAW
Indian Institute of Technology Madras
TU Wien
University of Antwerp
Arab Academy for Science, Technology and Maritime Transport
Vrije Universiteit Brussel
Ghent University
Université Libre de Bruxelles
Korea University
Université catholique de Louvain
Centro Brasileiro de Pesquisas Fisicas
Universidade do Estado do Rio de Janeiro
Universidade Estadual de Campinas
Universidade Federal do Rio Grande do Sul
UFMS
Universidade Estadual Paulista Júlio de Mesquita Filho
Bulgarian Academy of Sciences
University of Sofia
Universidad de Tarapacá
Beihang University
Tsinghua University
Nanjing Normal University
University of Iowa
Institute of High Energy Physics Chinese Academy of Science
University of Chinese Academy of Sciences
University of Florida
Massachusetts Institute of Technology
Peking University
Sun Yat-Sen University
University of Science and Technology of China
CAS - Institute of Modern Physics
Rice University
Zhejiang University
Universidad de los Andes Colombia
Universidad de Antioquia
University of Split
Faculty of Science, University of Split
Institute Rudjer Boskovic
CERN
University of Cyprus
Charles University
Escuela Politecnica Nacional
Egyptian Network of High Energy Physics
British University
Suez University
Fayoum University
National Institute of Chemical Physics and Biophysics, Tallinn
Birla Institute of Technology, Mesra
University of Helsinki
Helsinki Institute of Physics
Lappeenranta University of Technology
Université Paris-Saclay
Purdue University
Laboratoire Leprince-Ringuet
Institut Pluridisciplinaire Hubert Curien
Université de Haute-Alsace
Institut de Physique des 2 Infinis de Lyon
Seoul National University
Georgian Technical University
Tbilisi State University
RWTH Aachen University
Tata Institute of Fundamental Research, Mumbai
Universidade do Estado do Amazonas
Erzincan University
Deutsches Elektronen-Synchrotron (DESY)
Saha Institute of Nuclear Physics
Northwestern University
University of Hamburg
Isfahan University of Technology
University of Wuppertal
Brandenburg University of Technology
Forschungszentrum Jülich GmbH
University of Kansas
Karlsruhe Institute of Technology
NCSR Demokritos
National and Kapodistrian University of Athens
National Technical University of Athens
University of Ioannina
Eötvös Loránd University
Faculty of Science
KFKI Research Institute for Particle and Nuclear Physics
University of Debrecen
Institute for Nuclear Research
Babes Bolyai University
University of Debrecen
Eszterhazy Karoly University
Panjab University
Punjab Agricultural University
UPES—University of Petroleum and Energy Studies
University of Delhi
Visva-Bharati University
University of Hyderabad
Indian Institute of Science
University of Wisconsin-Madison
An OCC of Homi Bhabha National Institute
Indian Institute of Technology Bhubaneswar
Institute of Physics Bhubaneswar
Indian Institute of Science Education and Research Pune
Sharif University of Technology
Institute for Research for Fundamental Sciences
University of Science and Technology of Mazandaran, Behshahr
University College Dublin
INFN Sezione di Bari
Université di Bari
Polytechnic University of Bari
Helwan University
INFN Sezione di Bologna
University of Bologna
Energy and Sustainable Economic Development
National Institute for Nuclear Physics
University of Catania
Centro Siciliano di Fisica Nucleare e di Struttura Della Materia
INFN Sezione di Firenze
University of Florence
Università degli Studi Guglielmo Marconi
University of Genoa
Université di Milano-Bicocca
INFN Sezione di Napoli
University of Naples Federico II
Université della Basilicata
INFN Sezione di Padova
Fermi National Accelerator Laboratory
University of Padua
INFN Sezione di Pavia
Ain Shams University
Université di Pavia
INFN Sezione di Perugia
Université di Perugia
Istituto per i Processi Chimico-Fisici
INFN Sezione di Pisa
University of Pisa
Scuola Normale Superiore di Pisa
University of Siena
Université di Roma La Sapienza
INFN Sezione di Torino
Université di Torino
University of Eastern Piedmont
INFN Sezione di Trieste
Université di Trieste
Kyungpook National University
University of California at Santa Barbara
Sungkyunkwan University
Texas Tech University
Chonnam National University
Texas AandM University
Hanyang University
Kansas State University
University of Illinois at Chicago
Kyung Hee University
Sejong University
University of Seoul
Florida State University
Yonsei University
American University of the Middle East
Riga Technical University
University of Latvia
Vilnius University
Universiti Malaya
Universiti Kebangsaan Malaysia
Universidad de Sonora
Centro de Investigacion y de Estudios Avanzados del Instituto Politécnico Nacional
Consejo Nacional de Ciencia y Tecnologia Mexico
Universidad Iberoamericana (UIA)
Benemerita Universidad Autonoma de Puebla
University of Montenegro
University of Canterbury
Quaid-I-Azam University
AGH University of Krakow
National Centre for Nuclear Research
University of Warsaw
Laboratório de Instrumentação e Fisica Experimental de Partículas
University of Belgrade
University of Belgrade
CIEMAT
Universidad Autónoma de Madrid
University of Oviedo
CSIC-Universidad de Cantabria
University of Colombo
Eastern University, Sri Lanka
University of Ruhuna
Ecole Polytechnique Fédérale Lausanne
University of Vienna
Paul Scherrer Institut
University of Zurich
ETH Zurich
Austrian Academy of Sciences
National Central University
IN2P3-CNRS
National Taiwan University
Chulalongkorn University
Cukurova University
Near East University
Konya Technical University
Izmir Bakircay University
Adiyaman University
Middle East Technical University (METU)
Necmettin Erbakan University
Yozgat Bozok University
Bogazici University
Marmara University
Milli Savunma University
Kafkas University
Istanbul Technical University
Hacettepe University
Istanbul University
Istanbul University - Cerrahpaşa
Yildiz Technical University
Institute for Scintillation Materials of National Academy of Science of Ukraine
NASU - Kharkov Institute of Physics and Technology
University of Bristol
Rutherford Appleton Laboratory
University of Southampton
Imperial College London
Durham University
University of Puerto Rico
Monash University
Brunel University London
Baylor University
Catholic University of America
University of Alabama
Boston University
Brown University
Bethel University
Karamanoğlu Mehmetbey University
University of California, Davis
University of California at Los Angeles
University of California at Riverside
University of California at San Diego
California Institute of Technology
Carnegie Mellon University
University of Colorado at Boulder
Cornell University
United States Naval Academy
Florida Institute of Technology
Bingol University
Sinop University
Erciyes University
Johns Hopkins University
Horia Hulubei National Institute of Physics and Nuclear Engineering
University of Maryland, College Park
University of Minnesota-Twin Cities
University of Mississippi
University of Nebraska-Lincoln
State University of New York at Buffalo
Northeastern University
University of Notre Dame
Ohio State University
Princeton University
Purdue University Calumet
University of Rochester
Rockefeller University
Rutgers University–New Brunswick
University of Tennessee
Texas A&M University at Qatar
Vanderbilt University
University of Virginia
Wayne State University
Institute of Nuclear Physics of the Uzbekistan Academy of Sciences

Producción científica: Contribución a una revista › Artículo › revisión exhaustiva

18 Citas (Scopus)

Resumen

A search for the rare η→μ^{+}μ^{-}μ^{+}μ^{-} double-Dalitz decay is performed using a sample of proton-proton collisions, collected by the CMS experiment at the CERN LHC with high-rate muon triggers during 2017 and 2018 and corresponding to an integrated luminosity of 101 fb^{-1}. A signal having a statistical significance well in excess of 5 standard deviations is observed. Using the η→μ^{+}μ^{-} decay as normalization, the branching fraction B(η→μ^{+}μ^{-}μ^{+}μ^{-})=[5.0±0.8(stat)±0.7(syst)±0.7(B_{2μ})]×10^{-9} is measured, where the last term is the uncertainty in the normalization channel branching fraction. This work achieves an improved precision of over 5 orders of magnitude compared to previous results, leading to the first measurement of this branching fraction, which is found to agree with theoretical predictions.

Idioma original	Inglés
Número de artículo	091903
Publicación	Physical Review Letters
Volumen	131
N.º	9
DOI	https://doi.org/10.1103/PhysRevLett.131.091903
Estado	Publicada - 1 sep. 2023

Acceder al documento

10.1103/PhysRevLett.131.091903

Otros archivos y enlaces

Enlace a la publicación en Scopus

Citar esto

@article{be850619d8e942ffb3d6c11ecd92f001,

title = "Observation of the Rare Decay of the η Meson to Four Muons",

abstract = "A search for the rare η→μ\textasciicircum{}\{+\}μ\textasciicircum{}\{-\}μ\textasciicircum{}\{+\}μ\textasciicircum{}\{-\} double-Dalitz decay is performed using a sample of proton-proton collisions, collected by the CMS experiment at the CERN LHC with high-rate muon triggers during 2017 and 2018 and corresponding to an integrated luminosity of 101 fb\textasciicircum{}\{-1\}. A signal having a statistical significance well in excess of 5 standard deviations is observed. Using the η→μ\textasciicircum{}\{+\}μ\textasciicircum{}\{-\} decay as normalization, the branching fraction B(η→μ\textasciicircum{}\{+\}μ\textasciicircum{}\{-\}μ\textasciicircum{}\{+\}μ\textasciicircum{}\{-\})=[5.0±0.8(stat)±0.7(syst)±0.7(B\_\{2μ\})]×10\textasciicircum{}\{-9\} is measured, where the last term is the uncertainty in the normalization channel branching fraction. This work achieves an improved precision of over 5 orders of magnitude compared to previous results, leading to the first measurement of this branching fraction, which is found to agree with theoretical predictions.",

author = "\{CMS Collaboration\} and A. Hayrapetyan 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 D. Liko and I. Mikulec and J. Schieck and R. Sch{\"o}fbeck and D. Schwarz and M. Sonawane and S. Templ and W. Waltenberger and Wulz, \{C. E.\} and Darwish, \{M. R.\} and T. Janssen and \{Van Mechelen\}, P. and Bols, \{E. S.\} and J. D{\textquoteright}Hondt and S. Dansana and \{De Moor\}, A. and M. Delcourt and \{El Faham\}, H. and S. Lowette and I. Makarenko and A. Morton and D. M{\"u}ller and Sahasransu, \{A. R.\} and S. Tavernier and M. Tytgat and \{Van Putte\}, S. and D. Vannerom and B. Clerbaux and \{De Lentdecker\}, G. and L. Favart and D. Hohov and J. Jaramillo and A. Khalilzadeh and K. Lee and M. Mahdavikhorrami and A. Malara and S. Paredes and \{Carrera Jarrin\}, E.",

note = "Publisher Copyright: {\textcopyright} 2023 CERN, for the CMS Collaboration.",

year = "2023",

month = sep,

day = "1",

doi = "10.1103/PhysRevLett.131.091903",

language = "Ingl{\'e}s",

volume = "131",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "9",

}

TY - JOUR

T1 - Observation of the Rare Decay of the η Meson to Four Muons

AU - CMS Collaboration

AU - Hayrapetyan, A.

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 - Liko, D.

AU - Mikulec, I.

AU - Schieck, J.

AU - Schöfbeck, R.

AU - Schwarz, D.

AU - Sonawane, M.

AU - Templ, S.

AU - Waltenberger, W.

AU - Wulz, C. E.

AU - Darwish, M. R.

AU - Janssen, T.

AU - Van Mechelen, P.

AU - Bols, E. S.

AU - D’Hondt, J.

AU - Dansana, S.

AU - De Moor, A.

AU - Delcourt, M.

AU - El Faham, H.

AU - Lowette, S.

AU - Makarenko, I.

AU - Morton, A.

AU - Müller, D.

AU - Sahasransu, A. R.

AU - Tavernier, S.

AU - Tytgat, M.

AU - Van Putte, S.

AU - Vannerom, D.

AU - Clerbaux, B.

AU - De Lentdecker, G.

AU - Favart, L.

AU - Hohov, D.

AU - Jaramillo, J.

AU - Khalilzadeh, A.

AU - Lee, K.

AU - Mahdavikhorrami, M.

AU - Malara, A.

AU - Paredes, S.

AU - Carrera Jarrin, E.

PY - 2023/9/1

Y1 - 2023/9/1

N2 - A search for the rare η→μ^{+}μ^{-}μ^{+}μ^{-} double-Dalitz decay is performed using a sample of proton-proton collisions, collected by the CMS experiment at the CERN LHC with high-rate muon triggers during 2017 and 2018 and corresponding to an integrated luminosity of 101 fb^{-1}. A signal having a statistical significance well in excess of 5 standard deviations is observed. Using the η→μ^{+}μ^{-} decay as normalization, the branching fraction B(η→μ^{+}μ^{-}μ^{+}μ^{-})=[5.0±0.8(stat)±0.7(syst)±0.7(B_{2μ})]×10^{-9} is measured, where the last term is the uncertainty in the normalization channel branching fraction. This work achieves an improved precision of over 5 orders of magnitude compared to previous results, leading to the first measurement of this branching fraction, which is found to agree with theoretical predictions.

AB - A search for the rare η→μ^{+}μ^{-}μ^{+}μ^{-} double-Dalitz decay is performed using a sample of proton-proton collisions, collected by the CMS experiment at the CERN LHC with high-rate muon triggers during 2017 and 2018 and corresponding to an integrated luminosity of 101 fb^{-1}. A signal having a statistical significance well in excess of 5 standard deviations is observed. Using the η→μ^{+}μ^{-} decay as normalization, the branching fraction B(η→μ^{+}μ^{-}μ^{+}μ^{-})=[5.0±0.8(stat)±0.7(syst)±0.7(B_{2μ})]×10^{-9} is measured, where the last term is the uncertainty in the normalization channel branching fraction. This work achieves an improved precision of over 5 orders of magnitude compared to previous results, leading to the first measurement of this branching fraction, which is found to agree with theoretical predictions.

UR - https://www.scopus.com/pages/publications/85171697132

U2 - 10.1103/PhysRevLett.131.091903

DO - 10.1103/PhysRevLett.131.091903

M3 - Artículo

C2 - 37721839

AN - SCOPUS:85171697132

SN - 0031-9007

VL - 131

JO - Physical Review Letters

JF - Physical Review Letters

IS - 9

M1 - 091903

ER -

Observation of the Rare Decay of the η Meson to Four Muons

Resumen

Acceder al documento

Otros archivos y enlaces

Huella

Citar esto