Search for a CP-odd Higgs boson decaying into a heavy CP-even Higgs boson and a Z boson in the ℓ+ℓ- tt‾ and νν‾bb‾ final states using 140 fb-1 of data collected with the ATLAS detector

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F24%3A00585401" target="_blank" >RIV/68378271:_____/24:00585401 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11320/24:10493884
Result on the web
<a href="https://hdl.handle.net/11104/0356132" target="_blank" >https://hdl.handle.net/11104/0356132</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/JHEP02(2024)197" target="_blank" >10.1007/JHEP02(2024)197</a>

Result language
angličtina
Original language name
Search for a CP-odd Higgs boson decaying into a heavy CP-even Higgs boson and a Z boson in the ℓ+ℓ- tt‾ and νν‾bb‾ final states using 140 fb-1 of data collected with the ATLAS detector
Original language description
A search for a heavy CP-odd Higgs boson, A, decaying into a Z boson and a heavy CP-even Higgs boson, H, is presented. It uses the full LHC Run 2 dataset of pp collisions at ss = 13 TeV collected with the ATLAS detector, corresponding to an integrated luminosity of 140 fb−1−1. The search for A → ZH is performed in the ℓ+ℓ−tt‾ℓ+ℓ−tt and νν‾bb‾ννbb final states and surpasses the reach of previous searches in different final states in the region with mHH > 350 GeV and mAA > 800 GeV. No significant deviation from the Standard Model expectation is found. Upper limits are placed on the production cross-section times the decay branching ratios. Limits with less model dependence are also presented as functions of the reconstructed m(tt‾tt) and m(bb‾bb) distributions in the ℓ+ℓ−tt‾ℓ+ℓ−tt and νν‾bb‾ννbb channels, respectively. In addition, the results are interpreted in the context of two-Higgs-doublet models.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10303 - Particles and field physics

Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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