Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/129487
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Type: Journal article
Title: A search for the Zγ decay mode of the Higgs boson in pp collisions at √s=13 TeV with the ATLAS detector
Other Titles: A search for the Zgamma decay mode of the Higgs boson in pp collisions at root s=13 TeV 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, 2020; 809:1-21
Publisher: Elsevier
Issue Date: 2020
ISSN: 0370-2693
1873-2445
Statement of
Responsibility: 
G. Aad, B. Abbott, D.C. Abbott, A. Abed Abud, K. Abeling, D.K. Abhayasinghe ... et al.
Abstract: A search for the Zγdecay of the Higgs boson, with Zboson decays into pairs of electrons or muons is presented. The analysis uses proton–proton collision data at √s= 13 TeV corresponding to an integrated luminosity of 139 fb−1recorded by the ATLAS detector at the Large Hadron Collider. The observed data are consistent with the expected background with a p-value of 1.3%. An upper limit at 95% confidence level on the production cross-section times the branching ratio for pp →H→Zγis set at 3.6 times the Standard Model prediction while 2.6 times is expected in the presence of the Standard Model Higgs boson. The best-fit value for the signal yield normalised to the Standard Model prediction is 2.0+1.0−0.9where the statistical component of the uncertainty is dominant.
Rights: ©2020 The Author. 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.2020.135754
Published version: http://dx.doi.org/10.1016/j.physletb.2020.135754
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