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Search for a CP-odd Higgs boson decaying into a heavy CP-even Higgs boson and a Z boson in the ℓ+ℓ−??¯ and ??¯??¯ final states using 140 fb−1 of data collected with the ATLAS detector
- Aad, G. (author)
-
- Andrean, Stefio Y., 1991- (author)
- Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)
-
- Backman, Filip, 1991- (author)
- Stockholms universitet,Fysikum,Oskar Klein-centrum för kosmopartikelfysik (OKC)
- show more...
- Zwalinski, L. (author)
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- (creator_code:org_t)
- 2024
- 2024
- English.
- In: Journal of High Energy Physics (JHEP). - 1126-6708 .- 1029-8479. ; 2024:2
- Journal article (peer-reviewed)
Abstract
Subject headings
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- 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 √? = 13 TeV collected with the ATLAS detector, corresponding to an integrated luminosity of 140 fb−1. The search for A → ZH is performed in the ℓ+ℓ− and final states and surpasses the reach of previous searches in different final states in the region with mH > 350 GeV and mA > 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 and distributions in the ℓ+ℓ− and channels, respectively. In addition, the results are interpreted in the context of two-Higgs-doublet models.
Subject headings
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
Keyword
- Hadron-Hadron Scattering
Publication and Content Type
- ref (subject category)
- art (subject category)
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