Search for lepton-flavour-violating decays of Higgs-like bosons

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作者
R. Aaij
C. Abellán Beteta
B. Adeva
M. Adinolfi
C. A. Aidala
Z. Ajaltouni
S. Akar
P. Albicocco
J. Albrecht
F. Alessio
M. Alexander
A. Alfonso Albero
G. Alkhazov
P. Alvarez Cartelle
A. A. Alves
S. Amato
S. Amerio
Y. Amhis
L. An
L. Anderlini
G. Andreassi
M. Andreotti
J. E. Andrews
R. B. Appleby
F. Archilli
P. d’Argent
J. Arnau Romeu
A. Artamonov
M. Artuso
K. Arzymatov
E. Aslanides
M. Atzeni
B. Audurier
S. Bachmann
J. J. Back
S. Baker
V. Balagura
W. Baldini
A. Baranov
R. J. Barlow
S. Barsuk
W. Barter
F. Baryshnikov
V. Batozskaya
B. Batsukh
V. Battista
A. Bay
J. Beddow
F. Bedeschi
I. Bediaga
机构
[1] Centro Brasileiro de Pesquisas Físicas (CBPF),Center for High Energy Physics
[2] Universidade Federal do Rio de Janeiro (UFRJ),LPNHE, Sorbonne Université
[3] Tsinghua University,I. Physikalisches Institut
[4] Univ. Grenoble Alpes,Fakultät Physik
[5] Univ. Savoie Mont-Blanc,Physikalisches Institut
[6] CNRS/IN2P3-LAPP,School of Physics
[7] Clermont Université,Faculty of Physics and Applied Computer Science
[8] Université Blaise Pascal,Institute of Nuclear Physics
[9] CNRS/IN2P3,ICCUB
[10] LPC,Institute of Physics
[11] Aix-Marseille Univ,Physik
[12] CNRS/IN2P3,Institut
[13] CPPM,H.H. Wills Physics Laboratory
[14] LAL,Cavendish Laboratory
[15] Univ. Paris-Sud,Department of Physics
[16] CNRS/IN2P3,School of Physics and Astronomy
[17] Université Paris-Saclay,School of Physics and Astronomy
[18] Paris Diderot,Oliver Lodge Laboratory
[19] Sorbonne Paris Cité,School of Physics and Astronomy
[20] CNRS/IN2P3,Department of Physics
[21] RWTH Aachen University,School of Physics and Technology
[22] Technische Universität Dortmund,Institute of Particle Physics
[23] Max-Planck-Institut für Kernphysik (MPIK),Departamento de Fisica
[24] Ruprecht-Karls-Universität Heidelberg,Institut für Physik
[25] University College Dublin,Instituto de Fisica Corpuscular
[26] INFN Sezione di Bari,undefined
[27] INFN Sezione di Bologna,undefined
[28] INFN Sezione di Ferrara,undefined
[29] INFN Sezione di Firenze,undefined
[30] INFN Laboratori Nazionali di Frascati,undefined
[31] INFN Sezione di Genova,undefined
[32] INFN,undefined
[33] Sezione di Milano-Bicocca,undefined
[34] INFN Sezione di Milano,undefined
[35] INFN Sezione di Cagliari,undefined
[36] INFN Sezione di Padova,undefined
[37] INFN Sezione di Pisa,undefined
[38] INFN Sezione di Roma Tor Vergata,undefined
[39] INFN Sezione di Roma La Sapienza,undefined
[40] Nikhef National Institute for Subatomic Physics,undefined
[41] Nikhef National Institute for Subatomic Physics and VU University Amsterdam,undefined
[42] Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences,undefined
[43] AGH-University of Science and Technology,undefined
[44] National Center for Nuclear Research (NCBJ),undefined
[45] Horia Hulubei National Institute of Physics and Nuclear Engineering,undefined
[46] Petersburg Nuclear Physics Institute (PNPI),undefined
[47] Institute of Theoretical and Experimental Physics (ITEP),undefined
[48] Moscow State University (SINP MSU),undefined
[49] Institute for Nuclear Research of the Russian Academy of Sciences (INR RAS),undefined
[50] Yandex School of Data Analysis,undefined
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摘要
A search is presented for a Higgs-like boson with mass in the range 45 to 195GeV/c2\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\,{{\mathrm {GeV/}}c^2}$$\end{document} decaying into a muon and a tau lepton. The dataset consists of proton-proton interactions at a centre-of-mass energy of 8TeV\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$~{\mathrm {TeV}}$$\end{document}, collected by the LHCb experiment, corresponding to an integrated luminosity of 2fb-1\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\,\text{ fb }^{-1}$$\end{document}. The tau leptons are reconstructed in both leptonic and hadronic decay channels. An upper limit on the production cross-section multiplied by the branching fraction at 95% confidence level is set and ranges from 22pb\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\,{\mathrm {pb}}$$\end{document} for a boson mass of 45GeV/c2\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\,{{\mathrm {GeV/}}c^2}$$\end{document} to 4pb\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\,{\mathrm {pb}}$$\end{document} for a mass of 195GeV/c2\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\,{{\mathrm {GeV/}}c^2}$$\end{document}.
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