Search for associated production of a Z boson with an invisibly
decaying Higgs boson or dark matter candidates at √s = 13 TeV with
the ATLAS detector

Aad, G.; Abbott, B.; Abbott, D.C.; Abed Abud, A.; Abeling, K.; Abhayasinghe, D.K.; Abidi, S.H.; Aboulhorma, A.; Abramowicz, H.; Abreu, H.; Abulaiti, Y.; Abusleme Hoffman, A.C.; Acharya, B.S.; Achkar, B.; Adam, L.; Adam Bourdarios, C.; Adamczyk, L.; Adamek, L.; Addepalli, S.V.; Adelman, J.; et al.

Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/135867

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Type:	Journal article
Title:	Search for associated production of a Z boson with an invisibly decaying Higgs boson or dark matter candidates at √s = 13 TeV with the ATLAS detector
Other Titles:	Search for associated production of a Z boson with an invisibly decaying Higgs boson or dark matter candidates at square 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. Aboulhorma, A. Abramowicz, H. Abreu, H. Abulaiti, Y. Abusleme Hoffman, A.C. Acharya, B.S. Achkar, B. Adam, L. Adam Bourdarios, C. Adamczyk, L. Adamek, L. Addepalli, S.V. Adelman, J. et al.
Citation:	Physics Letters B: Nuclear Physics and Particle Physics, 2022; 829:137066-1-137066-25
Publisher:	Elsevier BV
Issue Date:	2022
ISSN:	0370-2693 1873-2445
Statement of Responsibility:	G. Aad … P. Jackson … A.X.Y. Kong … J.L. Oliver … H. Potti … T.A. Ruggeri … A.S. Sharma … M.J. White … et al. [The ATLAS Collaboration]
Abstract:	A search for invisible decays of the Higgs boson as well as searches for dark matter candidates, produced together with a leptonically decaying Z boson, are presented. The analysis is performed using proton−proton collisions at a centre-of-mass energy of 13 TeV, delivered by the LHC, corresponding to an integrated luminosity of 139 fb−1 and recorded by the ATLAS experiment. Assuming Standard Model cross-sections for Z H production, the observed (expected) upper limit on the branching ratio of the Higgs boson to invisible particles is found to be 19% (19%) at the 95% confidence level. Exclusion limits are also set for simplified dark matter models and two-Higgs-doublet models with an additional pseudoscalar mediator.
Rights:	© 2022 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/).
DOI:	10.1016/j.physletb.2022.137066
Published version:	http://dx.doi.org/10.1016/j.physletb.2022.137066
Appears in Collections:	Physics publications

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