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Search for a light CP-odd Higgs boson decaying into a pair of τ -leptons in proton-proton collisions at √s = 13 TeV with the ATLAS detector

Springer Berlin Heidelberg

Abstract This paper reports a search for a light CP-odd scalar resonance with a mass of 20 GeV to 90 GeV in 13 TeV proton-proton collision data with an integrated luminosity of 140 fb−1 collected with the ATLAS detector at the Large Hadron Collider. The analysis assumes the resonance is produced via gluon-gluon fusion and decays into a τ+τ− pair which subsequently decays into a fully leptonic μ + ν μ ν ¯ τ e − ν ¯ e ν τ or e + ν e ν ¯ τ μ − ν ¯ μ ν τ final state. No significant excess of events above the predicted Standard Model background is observed. The results are interpreted within a flavour-aligned two-Higgs-doublet model, and a model-independent cross-section interpretation is also given. Upper limits at 95% confidence level between 3.0 pb and 68 pb are set on the cross-section for producing a CP-odd Higgs boson that decays into a τ+τ− pair.

Article

eng

Vancouver : University of British Columbia Library

10.14288/1.0448041

Science, Faculty of; TRIUMF; Non UBC; Physics and Astronomy, Department of

10.1007/JHEP12(2024)126

Faculty; Researcher

http://creativecommons.org/licenses/by/4.0/