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

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 t...

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Bibliographic Details
Published in:Physics Letters B Vol. 829. P. 137066 (1-25)
Other Authors: Aad, G., Abbott, B., Abbott, D. C., Aliev, M., Kostyukhin, Vadim V., Kuchinskaya, Olesya I., Penzin, Maxim S.
Format: Article
Language:English
Subjects:
Online Access:http://vital.lib.tsu.ru/vital/access/manager/Repository/koha:001001004
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520 3 |a 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. (C) 2022 The Author(s). Published by Elsevier B.V. 
653 |a ATLAS, детектор 
653 |a Хиггса бозон 
653 |a Z-бозоны 
653 |a протон-протонные столкновения 
653 |a темная материя 
655 4 |a статьи в журналах  |9 884400 
700 1 |a Aad, G.  |9 116039 
700 1 |a Abbott, B.  |9 116041 
700 1 |a Abbott, D. C.  |9 500727 
700 1 |a Aliev, M.  |9 878765 
700 1 |a Kostyukhin, Vadim V.  |9 898806 
700 1 |a Kuchinskaya, Olesya I.  |9 100836 
700 1 |a Penzin, Maxim S.  |9 898592 
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