TY - JOUR
T1 - Search for a light charged Higgs boson in t→H±b decays, with H±→cs, in pp collisions at √s=13 TeV with the ATLAS detector
AU - ATLAS Collaboration
AU - Newman, Paul
AU - Allport, Phil
AU - Bellos, Panagiotis
AU - Bracinik, Juraj
AU - Charlton, David
AU - Chisholm, Andrew
AU - Dimitrievska, Aleksandra
AU - Gonella, Laura
AU - Hawkes, Chris
AU - Hillier, Stephen
AU - Krizka, Karol
AU - Liu, Eric
AU - Lomas, Josh
AU - Neep, Thomas
AU - Nikolopoulos, Konstantinos
AU - Skorda, Eleni
AU - Thomas, Jurgen
AU - Thompson, Paul
AU - Watson, Alan
AU - Watson, Miriam
N1 - 48 pages in total, author list starting page 31, 6 figures, 4 tables, submitted to EPJC. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HDBS-2020-11
PY - 2025/2/6
Y1 - 2025/2/6
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 140 fb−1 of pp collisions at √s=13 TeV 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 GeV 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 140 fb−1 of pp collisions at √s=13 TeV 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 GeV and 168 GeV.
KW - hep-ex
UR - https://link.springer.com/journal/10052
U2 - 10.1140/epjc/s10052-024-13715-4
DO - 10.1140/epjc/s10052-024-13715-4
M3 - Article
SN - 1434-6044
VL - 85
JO - European Physical Journal C
JF - European Physical Journal C
M1 - 152
ER -