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 : = 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 [ny][ny]¯bb¯ final states using 140 fb^−1 of data collected with the ATLAS detector

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 √ s = 13TeV 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−t￣t and ν￣νb￣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￣t) and m(b￣b) distributions in the ℓ+ℓ−t￣t and ν￣νb￣b channels, respectively. In addition, the results are interpreted in the context of two-Higgs-doublet models

Object Details

• Alternative title: 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 [ny][ny]¯bb¯ final states using 140 fb^−1 of data collected with the ATLAS detector
• Location: Deutsche Nationalbibliothek Frankfurt am Main
• Extent: Online-Ressource
• Language: Englisch
• Notes: Journal of high energy physics. - 2024, 2 (2024) , 197, ISSN: 1029-8479

Contributors, Places and Time

• Event: Veröffentlichung
• (where): Freiburg
• (who): Universität
• (when): 2024
• Creator: ATLAS Collaboration CERN, [Study Group] ; Argyropoulos, Spyridon ; Becherer, Fabian ; Bhalla, Naman Kumar ; Böhler, Michael ; Burlayenko, Oleksandr ; Diehl, Leena ; Froch, Alexander ; Gurdasani, Simran Sunil ; Heidegger, Constantin ; Heidegger, Kim K. ; Herten, Gregor ; Jain, Prasham ; Jakobs, Karl ; Jenni, Peter ; Kalaitzidou, Ilia ; Karentzos, Efstathios ; Köneke, Karsten ; Küsters, Roman ; Kuprash, Oleg ; Landgraf, Ulrich ; Lang, Valerie ; Moskalets, Tetiana ; Öncel, Ömer Ogul ; Parzefall, Ulrich ; Plesanovs, Vladislavs ; Pretel, Jose ; Rafanoharana, Dimbiniaina ; Rodríguez Rodríguez, Arturo ; Rossini, Lorenzo ; Rottler, Benjamin ; Rúriková, Zuzana ; Sammel, Dirk ; Sauerburger, Frank ; Schleicher, Katharina E. ; Scholer, Patrick ; Schumacher, Markus ; Solovieva, Ksenia ; Sperlich, Dennis ; Weiser, Christian ; Winter, Benedict T. ; Zanzi, Daniele ; et al
• Contributor: Experimentelle Teilchenphysik

Further information

• DOI: 10.1007/jhep02(2024)197
• URN: urn:nbn:de:bsz:25-freidok-2533490
• Rights: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
• Last update: 25.03.2025, 1:51 PM CET