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Aad, G.; Abbott, B.; Abeling, K.; Abicht, N. J.; Abidi, S. H.; Aboulhorma, A.; Abramowicz, H.; Abreu, H.; Abulaiti, Y.; Acharya, B. S.; Adam Bourdarios, C.; Adamczyk, L.; Addepalli, S. V.; Addison, M. J.; Adelman, J.; Adiguzel, A.; Adye, T.; Affolder, A. A.; Afik, Y.; Agaras, M. N.; Agarwala, J.; Aggarwal, A.; Agheorghiesei, C.; Ahmad, A.; [...]

Search for a CP-odd Higgs boson decaying into a heavy CP-even Higgs boson and a Z boson in the $$ {\ell}^{+}{\ell}^{-}t\overline{t} $$ and $$ \nu \overline{\nu}b\overline{b} $$ final states using 140 fb−1 of data collected with the ATLAS detector

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  • Medientyp: E-Artikel
  • Titel: Search for a CP-odd Higgs boson decaying into a heavy CP-even Higgs boson and a Z boson in the $$ {\ell}^{+}{\ell}^{-}t\overline{t} $$ and $$ \nu \overline{\nu}b\overline{b} $$ final states using 140 fb−1 of data collected with the ATLAS detector
  • Beteiligte: Aad, G.; Abbott, B.; Abeling, K.; Abicht, N. J.; Abidi, S. H.; Aboulhorma, A.; Abramowicz, H.; Abreu, H.; Abulaiti, Y.; Acharya, B. S.; Adam Bourdarios, C.; Adamczyk, L.; Addepalli, S. V.; Addison, M. J.; Adelman, J.; Adiguzel, A.; Adye, T.; Affolder, A. A.; Afik, Y.; Agaras, M. N.; Agarwala, J.; Aggarwal, A.; Agheorghiesei, C.; Ahmad, A.; [...]
  • Erschienen: Springer Science and Business Media LLC, 2024
  • Erschienen in: Journal of High Energy Physics, 2024 (2024) 2
  • Sprache: Englisch
  • DOI: 10.1007/jhep02(2024)197
  • ISSN: 1029-8479
  • Entstehung:
  • Anmerkungen:
  • Beschreibung: Abstract 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 $$ \sqrt{s} $$ s = 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 $$ {\ell}^{+}{\ell}^{-}t\overline{t} $$ ℓ + ℓ − t t ¯ and $$ \nu \overline{\nu}b\overline{b} $$ ν ν ¯ b b ¯ 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 m($$ t\overline{t} $$ t t ¯ ) and m($$ b\overline{b} $$ b b ¯ ) distributions in the $$ {\ell}^{+}{\ell}^{-}t\overline{t} $$ ℓ + ℓ − t t ¯ and $$ \nu \overline{\nu}b\overline{b} $$ ν ν ¯ b b ¯ channels, respectively. In addition, the results are interpreted in the context of two-Higgs-doublet models.
  • Zugangsstatus: Freier Zugang