Search for invisible Higgs-boson decays in events with vector-boson fusion signatures using 139 fb−1 of proton-proton data recorded by the ATLAS experiment

被引:0
作者
G. Aad
B. Abbott
D. C. Abbott
A. Abed Abud
K. Abeling
D. K. Abhayasinghe
S. H. Abidi
A. Aboulhorma
H. Abramowicz
H. Abreu
Y. Abulaiti
A. C. Abusleme Hoffman
B. S. Acharya
B. Achkar
L. Adam
C. Adam Bourdarios
L. Adamczyk
L. Adamek
S. V. Addepalli
J. Adelman
A. Adiguzel
S. Adorni
T. Adye
A. A. Affolder
Y. Afik
M. N. Agaras
J. Agarwala
A. Aggarwal
C. Agheorghiesei
J. A. Aguilar-Saavedra
A. Ahmad
F. Ahmadov
W. S. Ahmed
X. Ai
G. Aielli
I. Aizenberg
M. Akbiyik
T. P. A. Åkesson
A. V. Akimov
K. Al Khoury
G. L. Alberghi
J. Albert
P. Albicocco
M. J. Alconada Verzini
S. Alderweireldt
M. Aleksa
I. N. Aleksandrov
C. Alexa
T. Alexopoulos
A. Alfonsi
机构
[1] University of Adelaide,Department of Physics
[2] University of Alberta,Department of Physics
[3] Ankara University,Department of Physics
[4] TOBB University of Economics and Technology,Division of Physics
[5] LAPP,High Energy Physics Division
[6] Univ. Savoie Mont Blanc,Department of Physics
[7] CNRS/IN2P3,Department of Physics
[8] APC,Physics Department
[9] Université Paris Cité,Physics Department
[10] CNRS/IN2P3,Department of Physics
[11] Argonne National Laboratory,Institute of Physics
[12] University of Arizona,Institut de Física d’Altes Energies (IFAE)
[13] University of Texas at Arlington,Institute of High Energy Physics
[14] National and Kapodistrian University of Athens,Physics Department
[15] National Technical University of Athens,Department of Physics
[16] University of Texas at Austin,Institute of Physics
[17] Azerbaijan Academy of Sciences,Department for Physics and Technology
[18] Barcelona Institute of Science and Technology,Institut für Physik
[19] Chinese Academy of Sciences,Albert Einstein Center for Fundamental Physics and Laboratory for High Energy Physics
[20] Tsinghua University,School of Physics and Astronomy
[21] Nanjing University,Department of Physics
[22] University of Chinese Academy of Science (UCAS),Department of Physics Engineering
[23] University of Belgrade,Department of Physics
[24] University of Bergen,Facultad de Ciencias y Centro de Investigaciónes
[25] Physics Division,Departamento de Física
[26] Lawrence Berkeley National Laboratory and University of California,Dipartimento di Fisica e Astronomia A. Righi
[27] Humboldt Universität zu Berlin,Physikalisches Institut
[28] University of Bern,Department of Physics
[29] University of Birmingham,Department of Physics
[30] Bogazici University,Department of Physics
[31] Gaziantep University,Faculty of Mathematics, Physics and Informatics
[32] Istanbul University,Physics Department
[33] Istinye University,Cavendish Laboratory
[34] Sariyer,Department of Physics
[35] Universidad Antonio Nariño,Department of Mechanical Engineering Science
[36] Universidad Nacional de Colombia,National Institute of Physics
[37] Università di Bologna,School of Physics
[38] INFN Sezione di Bologna,Department of Physics
[39] Universität Bonn,Faculté des Sciences
[40] Boston University,LPMR, Faculté des Sciences
[41] Brandeis University,Faculté des sciences
[42] Transilvania University of Brasov,Enrico Fermi Institute
[43] Horia Hulubei National Institute of Physics and Nuclear Engineering,Nevis Laboratory
[44] Alexandru Ioan Cuza University of Iasi,Niels Bohr Institute
[45] National Institute for Research and Development of Isotopic and Molecular Technologies,Dipartimento di Fisica
[46] Physics Department,Physics Department
[47] University Politehnica Bucharest,Physics Department
[48] West University in Timisoara,Department of Physics
[49] Comenius University,Fakultät Physik
[50] Department of Subnuclear Physics,Institut für Kern
来源
Journal of High Energy Physics | / 2022卷
关键词
Hadron-Hadron Scattering; Higgs Physics; Vector Boson Production;
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摘要
A direct search for Higgs bosons produced via vector-boson fusion and subsequently decaying into invisible particles is reported. The analysis uses 139 fb−1 of pp collision data at a centre-of-mass energy of s\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ \sqrt{s} $$\end{document} = 13 TeV recorded by the ATLAS detector at the LHC. The observed numbers of events are found to be in agreement with the background expectation from Standard Model processes. For a scalar Higgs boson with a mass of 125 GeV and a Standard Model production cross section, an observed upper limit of 0.145 is placed on the branching fraction of its decay into invisible particles at 95% confidence level, with an expected limit of 0.103. These results are interpreted in the context of models where the Higgs boson acts as a portal to dark matter, and limits are set on the scattering cross section of weakly interacting massive particles and nucleons. Invisible decays of additional scalar bosons with masses from 50 GeV to 2 TeV are also studied, and the derived upper limits on the cross section times branching fraction decrease with increasing mass from 1.0 pb for a scalar boson mass of 50 GeV to 0.1 pb at a mass of 2 TeV.
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