Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/129971
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Type: Journal article
Title: A search for the dimuon decay of the Standard Model Higgs boson with the ATLAS detector
Author: Aad, G.
Abbott, B.
Abbott, D.C.
Abed Abud, A.
Abeling, K.
Abhayasinghe, D.K.
Abidi, S.H.
AbouZeid, O.S.
Abraham, N.L.
Abramowicz, H.
Abreu, H.
Abulaiti, Y.
Acharya, B.S.
Achkar, B.
Adam, L.
Adam Bourdarios, C.
Adamczyk, L.
Adamek, L.
Adelman, J.
Adersberger, M.
et al.
Citation: Physics Letters B: Nuclear Physics and Particle Physics, 2021; 812:135980-135980
Publisher: Elsevier
Issue Date: 2021
ISSN: 0370-2693
1873-2445
Statement of
Responsibility: 
G.Aad, B.Abbott, D.C.Abbott, A.Abed Abud, K.Abeling ... Paul Jackson ... et al.
Abstract: A search for the dimuon decay of the Standard Model (SM) Higgs boson is performed using data corresponding to an integrated luminosity of 139 fb−1collected with the ATLAS detector in Run 2 ppcollisions at √s=13 TeV at the Large Hadron Collider. The observed (expected) significance over the background-only hypothesis for a Higgs boson with a mass of 125.09 GeV is 2.0σ(1.7σ). The observed upper limit on the cross section times branching ratio for pp →H→μμis 2.2times the SM prediction at 95% confidence level, while the expected limit on a H→μμsignal assuming the absence (presence) of a SM signal is 1.1(2.0). The best-fit value of the signal strength parameter, defined as the ratio of the observed signal yield to the one expected in the SM, is μ =1.2 ±0.6
Rights: © 2020 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3.
DOI: 10.1016/j.physletb.2020.135980
Published version: http://dx.doi.org/10.1016/j.physletb.2020.135980
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