Search for W Boson Decays to Three Charged Pions

CMS Collaboration

doi:10.1103/PhysRevLett.122.151802

Search for W Boson Decays to Three Charged Pions

CMS Collaboration

Department of Physics Engineering

A. Alikhanian Yerevan Institute of Physics
Austrian Academy of Sciences
TU Wien
Belarusian State University
University of Antwerp
Vrije Universiteit Brussel
Université libre de Bruxelles
Lomonosov Moscow State University
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Beihang University
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Ruder Boskovic Institute
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German Electron Synchrotron
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Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

For the first time, a search for the rare decay of the W boson to three charged pions has been performed. Proton-proton collision data recorded by the CMS experiment at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 77.3 fb-1, have been analyzed. No significant excess is observed above the background expectation. An upper limit of 1.01×10-6 is set at 95% confidence level on the branching fraction of the W boson to three charged pions. This provides a strong motivation for theoretical calculations of this branching fraction.

Original language	English
Article number	151802
Journal	Physical Review Letters
Volume	122
Issue number	15
DOIs	https://doi.org/10.1103/PhysRevLett.122.151802
Publication status	Published - 18 Apr 2019

Bibliographical note

Publisher Copyright:
© 2019 CERN. for the CMS Collaboration. Published by the American Physical Society under the terms of the »https://creativecommons.org/licenses/by/4.0/» Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP.

Funding

We congratulate our colleagues in the CERN accelerator departments for the excellent performance of the LHC and thank the technical and administrative staffs at CERN and at other CMS institutes for their contributions to the success of the CMS effort. In addition, we gratefully acknowledge the computing centers and personnel of the Worldwide LHC Computing Grid for delivering so effectively the computing infrastructure essential to our analyses. Finally, we acknowledge the enduring support for the construction and operation of the LHC and the CMS detector provided by the following funding agencies: BMBWF and FWF (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, FAPERGS, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS, MoST, and NSFC (China); COLCIENCIAS (Colombia); MSES and CSF (Croatia); RPF (Cyprus); SENESCYT (Ecuador); MoER, ERC IUT, and ERDF (Estonia); Academy of Finland, MEC, and HIP (Finland); CEA and CNRS/IN2P3 (France); BMBF, DFG, and HGF (Germany); GSRT (Greece); NKFIA (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); MSIP and NRF (Republic of Korea); MES (Latvia); LAS (Lithuania); MOE and UM (Malaysia); BUAP, CINVESTAV, CONACYT, LNS, SEP, and UASLP-FAI (Mexico); MOS (Montenegro); MBIE (New Zealand); PAEC (Pakistan); MSHE and NSC (Poland); FCT (Portugal); JINR (Dubna); MON, RosAtom, RAS, RFBR, and NRC KI (Russia); MESTD (Serbia); SEIDI, CPAN, PCTI, and FEDER (Spain); MOSTR (Sri Lanka); Swiss Funding Agencies (Switzerland); MST (Taipei); ThEPCenter, IPST, STAR, and NSTDA (Thailand); TUBITAK and TAEK (Turkey); NASU and SFFR (Ukraine); STFC (United Kingdom); DOE and NSF (U.S.).

Funders	Funder number
CNRS/IN2P3
CPAN
ERC IUT
LNS
MESTD
MON
MSES
MSHE
MoER
PCTI
STAR
Swiss Funding Agencies
TUBITAK
ThEPCenter
UASLP-FAI
National Science Foundation
U.S. Department of Energy
Hispanics in Philanthropy
CS Fund
Maryland Ornithological Society
Departamento Administrativo de Ciencia, Tecnología e Innovación (COLCIENCIAS)
California Earthquake Authority
Secretaría de Educación Pública
Türkiye Atom Enerjisi Kurumu
Louisiana Academy of Sciences
Missouri University of Science and Technology
CERN
College of Arts and Sciences, University of Nebraska-Lincoln
Norwegian Sequencing Centre
Institute for the Promotion of Teaching Science and Technology
Mountain Equipment Co-operative
Science and Technology Facilities Council	GRIDPP, ST/N000242/1
Royal Astronomical Society
Ministry of Education - Singapore
Department of Atomic Energy, Government of India
Taighde Éireann - Research Ireland
Helmholtz-Gemeinschaft
Deutsche Forschungsgemeinschaft
Fundação de Amparo à Pesquisa do Estado de São Paulo
National Natural Science Foundation of China
Research Promotion Foundation
Fundação para a Ciência e a Tecnologia
Russian Foundation for Basic Research
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Academy of Finland
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Austrian Science Fund
Fonds De La Recherche Scientifique - FNRS
Fonds Wetenschappelijk Onderzoek
Consejo Nacional de Ciencia y Tecnología
General Secretariat for Research and Technology
Conselho Nacional de Desenvolvimento Científico e Tecnológico
Ministry of Science, ICT and Future Planning
Ministry of Science and Technology
National Research Foundation of Korea
Joint Institute for Nuclear Research
Instituto Nazionale di Fisica Nucleare
National Science and Technology Development Agency	Thailand
Fundação de Amparo à Pesquisa do Estado do Rio Grande do Sul
Secretaría de Educación Superior, Ciencia, Tecnología e Innovación
Universiti Malaya
Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro
Ministry for Business Innovation and Employment
National Academy of Sciences of Ukraine
Ministry of Education and Science
Institute for Research in Fundamental Sciences
Benemérita Universidad Autónoma de Puebla
Secretaría de Estado de Investigación, Desarrollo e Innovación
European Regional Development Fund
State Atomic Energy Corporation ROSATOM
Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional
Pakistan Atomic Energy Commission
State Fund for Fundamental Research of Ukraine
Department of Science and Technology, Government of West Bengal
Ministry of Science,Technology and Research
Bundesministerium für Bildung, Wissenschaft, Forschung und Technologie
Nemzeti Kutatási, Fejlesztési és Innovaciós Alap
National Research Center "Kurchatov Institute"

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10.1103/PhysRevLett.122.151802

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@article{19c705bed35341f89777533037d49329,

title = "Search for W Boson Decays to Three Charged Pions",

abstract = "For the first time, a search for the rare decay of the W boson to three charged pions has been performed. Proton-proton collision data recorded by the CMS experiment at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 77.3 fb-1, have been analyzed. No significant excess is observed above the background expectation. An upper limit of 1.01×10-6 is set at 95\% confidence level on the branching fraction of the W boson to three charged pions. This provides a strong motivation for theoretical calculations of this branching fraction.",

author = "\{CMS Collaboration\} and Sirunyan, \{A. M.\} and A. Tumasyan and W. Adam and F. Ambrogi and E. Asilar and T. Bergauer and J. Brandstetter and M. Dragicevic and J. Er{\"o} and \{Escalante Del Valle\}, A. and M. Flechl and R. Fr{\"u}hwirth and Ghete, \{V. M.\} and J. Hrubec and M. Jeitler and N. Krammer and I. Kr{\"a}tschmer and D. Liko and T. Madlener and I. Mikulec and N. Rad and H. Rohringer and J. Schieck and R. Sch{\"o}fbeck and M. Spanring and D. Spitzbart and W. Waltenberger and J. Wittmann and Wulz, \{C. E.\} and M. Zarucki and V. Chekhovsky and V. Mossolov and \{Suarez Gonzalez\}, J. and \{De Wolf\}, \{E. A.\} and \{Di Croce\}, D. and X. Janssen and J. Lauwers and A. Lelek and M. Pieters and \{Van Haevermaet\}, H. and \{Van Mechelen\}, P. and \{Van Remortel\}, N. and F. Blekman and J. D'Hondt and \{De Clercq\}, J. and K. Deroover and G. Flouris and D. Lontkovskyi and S. Lowette and A. Cakir",

note = "Publisher Copyright: {\textcopyright} 2019 CERN. for the CMS Collaboration. Published by the American Physical Society under the terms of the »https://creativecommons.org/licenses/by/4.0/» Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP.",

year = "2019",

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doi = "10.1103/PhysRevLett.122.151802",

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AU - CMS Collaboration

AU - Sirunyan, A. M.

AU - Tumasyan, A.

AU - Adam, W.

AU - Ambrogi, F.

AU - Asilar, E.

AU - Bergauer, T.

AU - Brandstetter, J.

AU - Dragicevic, M.

AU - Erö, J.

AU - Escalante Del Valle, A.

AU - Flechl, M.

AU - Frühwirth, R.

AU - Ghete, V. M.

AU - Hrubec, J.

AU - Jeitler, M.

AU - Krammer, N.

AU - Krätschmer, I.

AU - Liko, D.

AU - Madlener, T.

AU - Mikulec, I.

AU - Rad, N.

AU - Rohringer, H.

AU - Schieck, J.

AU - Schöfbeck, R.

AU - Spanring, M.

AU - Spitzbart, D.

AU - Waltenberger, W.

AU - Wittmann, J.

AU - Wulz, C. E.

AU - Zarucki, M.

AU - Chekhovsky, V.

AU - Mossolov, V.

AU - Suarez Gonzalez, J.

AU - De Wolf, E. A.

AU - Di Croce, D.

AU - Janssen, X.

AU - Lauwers, J.

AU - Lelek, A.

AU - Pieters, M.

AU - Van Haevermaet, H.

AU - Van Mechelen, P.

AU - Van Remortel, N.

AU - Blekman, F.

AU - D'Hondt, J.

AU - De Clercq, J.

AU - Deroover, K.

AU - Flouris, G.

AU - Lontkovskyi, D.

AU - Lowette, S.

AU - Cakir, A.

N1 - Publisher Copyright: © 2019 CERN. for the CMS Collaboration. Published by the American Physical Society under the terms of the »https://creativecommons.org/licenses/by/4.0/» Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP.

PY - 2019/4/18

Y1 - 2019/4/18

N2 - For the first time, a search for the rare decay of the W boson to three charged pions has been performed. Proton-proton collision data recorded by the CMS experiment at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 77.3 fb-1, have been analyzed. No significant excess is observed above the background expectation. An upper limit of 1.01×10-6 is set at 95% confidence level on the branching fraction of the W boson to three charged pions. This provides a strong motivation for theoretical calculations of this branching fraction.

AB - For the first time, a search for the rare decay of the W boson to three charged pions has been performed. Proton-proton collision data recorded by the CMS experiment at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 77.3 fb-1, have been analyzed. No significant excess is observed above the background expectation. An upper limit of 1.01×10-6 is set at 95% confidence level on the branching fraction of the W boson to three charged pions. This provides a strong motivation for theoretical calculations of this branching fraction.

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DO - 10.1103/PhysRevLett.122.151802

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VL - 122

JO - Physical Review Letters

JF - Physical Review Letters

IS - 15

M1 - 151802

ER -

Search for W Boson Decays to Three Charged Pions

Abstract

Bibliographical note

Funding

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