TY - JOUR
T1 - Search for a light charged Higgs boson in t→H±b decays, with H±→cs, in pp collisions at s=13TeV with the ATLAS detector
AU - ATLAS Collaboration
AU - Zwalinski, L.
AU - Zou, W.
AU - Zormpa, O.
AU - Zorbas, T. G.
AU - Zoch, K.
AU - Zoccoli, A.
AU - Živković, L.
AU - Ziolkowski, M.
AU - Zinsser, J.
AU - Zimine, N. I.
AU - Zhukov, K.
AU - Zhuang, X.
AU - Zhu, Y.
AU - Zhu, Y.
AU - Zhu, X.
AU - Zhu, J.
AU - Zhu, C. G.
AU - Zhou, Y.
AU - Zhou, Y.
AU - Zhou, Y.
AU - Zhou, N.
AU - Zhou, H.
AU - Zhou, B.
AU - Zhong, D.
AU - Zheng, Z.
AU - Zheng, X.
AU - Zheng, K.
AU - Zheng, J.
AU - Zhemchugov, A.
AU - Zhao, Z.
AU - Zhao, Z.
AU - Zhao, Y.
AU - Zhao, T.
AU - Zhao, H.
AU - Zhang, Z.
AU - Zhang, Z.
AU - Zhang, Z.
AU - Zhang, Y.
AU - Zhang, Y.
AU - Zhang, Y.
AU - Zhang, X.
AU - Zhang, X.
AU - Zhang, T.
AU - Zhang, S.
AU - Zhang, S.
AU - Zhang, R.
AU - Zhang, P.
AU - Zhang, L.
AU - Zhang, L.
AU - Belfkir, M.
N1 - Publisher Copyright:
© The Author(s) 2025.
PY - 2025/2
Y1 - 2025/2
N2 - A search for a light charged Higgs boson produced in decays of the top quark, t→H±b with H±→cs, is presented. This search targets the production of top-quark pairs tt¯→WbH±b, with W→ℓν (ℓ=e,μ), resulting in a lepton-plus-jets final state characterised by an isolated electron or muon and at least four jets. The search exploits b-quark and c-quark identification techniques as well as multivariate methods to suppress the dominant tt¯ background. The data analysed correspond to 140fb-1 of pp collisions at s=13TeV recorded with the ATLAS detector at the LHC between 2015 and 2018. Observed (expected) 95% confidence-level upper limits on the branching fraction B(t→H±b), assuming B(t→Wb)+B(t→H±(→cs)b)=1.0, are set between 0.066% (0.077%) and 3.6% (2.3%) for a charged Higgs boson with a mass between 60 and 168 GeV.
AB - A search for a light charged Higgs boson produced in decays of the top quark, t→H±b with H±→cs, is presented. This search targets the production of top-quark pairs tt¯→WbH±b, with W→ℓν (ℓ=e,μ), resulting in a lepton-plus-jets final state characterised by an isolated electron or muon and at least four jets. The search exploits b-quark and c-quark identification techniques as well as multivariate methods to suppress the dominant tt¯ background. The data analysed correspond to 140fb-1 of pp collisions at s=13TeV recorded with the ATLAS detector at the LHC between 2015 and 2018. Observed (expected) 95% confidence-level upper limits on the branching fraction B(t→H±b), assuming B(t→Wb)+B(t→H±(→cs)b)=1.0, are set between 0.066% (0.077%) and 3.6% (2.3%) for a charged Higgs boson with a mass between 60 and 168 GeV.
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U2 - 10.1140/epjc/s10052-024-13715-4
DO - 10.1140/epjc/s10052-024-13715-4
M3 - Article
AN - SCOPUS:105001209933
SN - 1434-6044
VL - 85
JO - European Physical Journal C
JF - European Physical Journal C
IS - 2
M1 - 153
ER -