Search for heavy neutral leptons in W+→μ+μ±jet decays

LHCb Collaboration

doi:10.1140/epjc/s10052-021-08973-5

Search for heavy neutral leptons in ^W+→^μ+^μ±jet decays

LHCb Collaboration

European Organization for Nuclear Research
Science Park 105
University of Zurich
University of Liverpool
Universidade de Santiago de Compostela
University of Bristol
Clermont-Auvergne University
University of Michigan, Ann Arbor
Sezione INFN di Milano
University of Cincinnati
University of Dortmund
University of Glasgow
University of Barcelona
University of Manchester
Petersburg Nuclear Physics Institute (PNPI)
Instituto de Biofisica da UFRJ
Université Paris-Saclay
Istituto Nazionale di Fisica Nucleare, Sezione di Firenze
Sezione INFN di Ferrara
University of Heidelberg
Kurchatov Institute
Syracuse University
Yandex School of Data Analysis
Aix Marseille Université
ENAC-IIC-GEL
University of Warwick
Imperial College London
Centro Brasileiro de Pesquisas Fisicas
Sezione di Genova
University of Genoa
National University of Science and Technology “MISIS”
RWTH Aachen University
Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
Sezione INFN di Cagliari
Moscow State University
Institute for Theoretical and Experimental Physics
LNF-INFN
Sorbonne Université
University of Padova
INFN Sezione di Bologna
University of Bologna
University of Cambridge
Institute for Nuclear Physics
Wuhan University
University of Birmingham
University of Modena and Reggio Emilia
University of Oxford
Sezione di Roma
Massachusetts Institute of Technology
National Research University
Budker Institute of Nuclear Physics of the Siberian Branch of the RAS
Novosibirsk State University
University of Maryland, College Park
Institute for Nuclear Research of the Russian Academy of Sciences
University of Ferrara
INFN Sezione di Milano-Bicocca
University of Milano-Bicocca
Universitat Ramon LLull - CSIC
University of Chinese Academy of Sciences
INFN Roma Tor Vergata
Institute of High Energy Physics, Chinese Academy of Sciences
LTHE (UMR 5564 CNRS/IRD/Université de Grenoble)
Tsinghua University
University of Edinburgh
Horia Hulubei National Institute of Physics and Nuclear Engineering
INFN Sezione di Bari
MST-8, Los Alamos National Laboratory
ICS/University of Groningen
Università degli studi di Bari Aldo Moro
Maastricht University
Agh University of Science and Technology Faculty of Computer Science
Universitá di Cagliari
Institute of Nuclear Research, National Academy of Sciences in Ukraine
University College Dublin
INFN Sezione di Trieste
Kharkov Institute of Physics and Technology
INFN Sezione di Perugia
CCLRC Rutherford Appleton Laboratory
Monash University
Tsinghua University
University of Rome “Tor Vergata”
Pontifícia Universidade Católica do Rio de Janeiro
Universidade Federal Do Triângulo Mineiro (UFTM)
Central China Normal University
University of Valencia
South China Normal University
Vrije Universiteit Amsterdam
National Research Tomsk Polytechnic University
National Centre for Nuclear Research (NCBJ)
University of Siena
Scuola Normale Superiore di Pisa
Kurchatov Institute
University of Milano
Iligan Institute of Technology (IIT)
University of Florence
Universität Rostock
Universidad Nacional de Colombia
University Bonn
P.N. Lebedev Physical Institute of the Russian Academy of Sciences
University of Pisa
Università degli Studi della Basilicata
Max-Planck-Institut für Kernphysik
University of Urbino Carlo Bo
Hunan University

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

Résumé

A search is performed for heavy neutrinos in the decay of a W boson into two muons and a jet. The data set corresponds to an integrated luminosity of approximately 3.0fb-1 of proton–proton collision data at centre-of-mass energies of 7 and 8TeV collected with the LHCb experiment. Both same-sign and opposite-sign muons in the final state are considered. Data are found to be consistent with the expected background. Upper limits on the coupling of a heavy neutrino with the Standard Model neutrino are set at 95 % confidence level in the heavy-neutrino mass range from 5 to 50GeV/c2. These are of the order of 10 ^{- 3} for lepton-number-conserving decays and of the order of 10 ^{- 4} for lepton-number-violating heavy-neutrino decays.

langue originale	Anglais
Numéro d'article	248
journal	European Physical Journal C
Volume	81
Numéro de publication	3
Les DOIs	https://doi.org/10.1140/epjc/s10052-021-08973-5
état	Publié - 1 mars 2021

Accès au document

10.1140/epjc/s10052-021-08973-5

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Contient cette citation

@article{adabfdbdf18644f3b9c6ad0f54527e6a,

title = "Search for heavy neutral leptons in W+→μ+μ±jet decays",

abstract = "A search is performed for heavy neutrinos in the decay of a W boson into two muons and a jet. The data set corresponds to an integrated luminosity of approximately 3.0fb-1 of proton–proton collision data at centre-of-mass energies of 7 and 8TeV collected with the LHCb experiment. Both same-sign and opposite-sign muons in the final state are considered. Data are found to be consistent with the expected background. Upper limits on the coupling of a heavy neutrino with the Standard Model neutrino are set at 95 \% confidence level in the heavy-neutrino mass range from 5 to 50GeV/c2. These are of the order of 10 - 3 for lepton-number-conserving decays and of the order of 10 - 4 for lepton-number-violating heavy-neutrino decays.",

author = "\{LHCb Collaboration\} and R. Aaij and \{Abell{\'a}n Beteta\}, C. and T. Ackernley and B. Adeva and M. Adinolfi and H. Afsharnia and Aidala, \{C. A.\} and S. Aiola and Z. Ajaltouni and S. Akar and J. Albrecht and F. Alessio and M. Alexander and \{Alfonso Albero\}, A. and Z. Aliouche and G. Alkhazov and \{Alvarez Cartelle\}, P. and S. Amato and Y. Amhis and L. An and L. Anderlini and A. Andreianov and M. Andreotti and F. Archilli and A. Artamonov and M. Artuso and K. Arzymatov and E. Aslanides and M. Atzeni and B. Audurier and S. Bachmann and M. Bachmayer and Back, \{J. J.\} and S. Baker and \{Baladron Rodriguez\}, P. and V. Balagura and W. Baldini and \{Baptista Leite\}, J. and Barlow, \{R. J.\} and S. Barsuk and W. Barter and M. Bartolini and F. Baryshnikov and Basels, \{J. M.\} and G. Bassi and B. Batsukh and A. Battig and A. Bay and F. Fleuret and E. Maurice",

note = "Publisher Copyright: {\textcopyright} 2021, CERN for the benefit of the LHCb collaboration.",

year = "2021",

month = mar,

day = "1",

doi = "10.1140/epjc/s10052-021-08973-5",

language = "English",

volume = "81",

journal = "European Physical Journal C",

issn = "1434-6044",

number = "3",

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T1 - Search for heavy neutral leptons in W+→μ+μ±jet decays

AU - LHCb Collaboration

AU - Aaij, R.

AU - Abellán Beteta, C.

AU - Ackernley, T.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Afsharnia, H.

AU - Aidala, C. A.

AU - Aiola, S.

AU - Ajaltouni, Z.

AU - Akar, S.

AU - Albrecht, J.

AU - Alessio, F.

AU - Alexander, M.

AU - Alfonso Albero, A.

AU - Aliouche, Z.

AU - Alkhazov, G.

AU - Alvarez Cartelle, P.

AU - Amato, S.

AU - Amhis, Y.

AU - An, L.

AU - Anderlini, L.

AU - Andreianov, A.

AU - Andreotti, M.

AU - Archilli, F.

AU - Artamonov, A.

AU - Artuso, M.

AU - Arzymatov, K.

AU - Aslanides, E.

AU - Atzeni, M.

AU - Audurier, B.

AU - Bachmann, S.

AU - Bachmayer, M.

AU - Back, J. J.

AU - Baker, S.

AU - Baladron Rodriguez, P.

AU - Balagura, V.

AU - Baldini, W.

AU - Baptista Leite, J.

AU - Barlow, R. J.

AU - Barsuk, S.

AU - Barter, W.

AU - Bartolini, M.

AU - Baryshnikov, F.

AU - Basels, J. M.

AU - Bassi, G.

AU - Batsukh, B.

AU - Battig, A.

AU - Bay, A.

AU - Fleuret, F.

AU - Maurice, E.

PY - 2021/3/1

Y1 - 2021/3/1

N2 - A search is performed for heavy neutrinos in the decay of a W boson into two muons and a jet. The data set corresponds to an integrated luminosity of approximately 3.0fb-1 of proton–proton collision data at centre-of-mass energies of 7 and 8TeV collected with the LHCb experiment. Both same-sign and opposite-sign muons in the final state are considered. Data are found to be consistent with the expected background. Upper limits on the coupling of a heavy neutrino with the Standard Model neutrino are set at 95 % confidence level in the heavy-neutrino mass range from 5 to 50GeV/c2. These are of the order of 10 - 3 for lepton-number-conserving decays and of the order of 10 - 4 for lepton-number-violating heavy-neutrino decays.

AB - A search is performed for heavy neutrinos in the decay of a W boson into two muons and a jet. The data set corresponds to an integrated luminosity of approximately 3.0fb-1 of proton–proton collision data at centre-of-mass energies of 7 and 8TeV collected with the LHCb experiment. Both same-sign and opposite-sign muons in the final state are considered. Data are found to be consistent with the expected background. Upper limits on the coupling of a heavy neutrino with the Standard Model neutrino are set at 95 % confidence level in the heavy-neutrino mass range from 5 to 50GeV/c2. These are of the order of 10 - 3 for lepton-number-conserving decays and of the order of 10 - 4 for lepton-number-violating heavy-neutrino decays.

UR - https://www.scopus.com/pages/publications/85103356590

U2 - 10.1140/epjc/s10052-021-08973-5

DO - 10.1140/epjc/s10052-021-08973-5

M3 - Article

AN - SCOPUS:85103356590

SN - 1434-6044

VL - 81

JO - European Physical Journal C

JF - European Physical Journal C

IS - 3

M1 - 248