{"@context":"http://schema.org","@id":"https://doi.org/10.17182/hepdata.153948.v2","@reverse":{"isBasedOn":[{"@type":"ScholarlyArticle","identifier":{"@type":"PropertyValue","propertyID":"URL","value":"https://inspirehep.net/literature/2836178"}},{"@id":"https://doi.org/10.1007/JHEP12(2024)126","@type":"JournalArticle"}]},"@type":"Dataset","additionalType":"Collection","author":{"@type":"Organization","name":"ATLAS Collaboration"},"creator":{"@type":"Organization","name":"ATLAS Collaboration"},"datePublished":"2025","description":"This paper reports a search for a light CP-odd scalar resonance with a mass of $20\\,\\mathrm{GeV}$ to $90\\,\\mathrm{GeV}$ in $13\\,\\mathrm{TeV}$ proton-proton collision data with an integrated luminosity of $140\\,\\mathrm{fb}^{-1}$ 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 $\\tau^{+}\\tau^{-}$ pair which subsequently decays into a fully leptonic $\\mu^{+}\\nu_{\\mu} \\bar{\\nu}_{\\tau} e^{-} \\bar{\\nu}_{e} \\nu_{\\tau}$ or $e^{+}\\nu_{e}\\bar{\\nu}_{\\tau} \\mu^-\\bar{\\nu}_{\\mu}\\nu_{\\tau}$ 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 $3.0\\,\\mathrm{pb}$ and $68\\,\\mathrm{pb}$ are set on the cross-section for producing a CP-odd Higgs boson that decays into a $\\tau^+\\tau^-$ pair.","hasPart":[{"@id":"https://doi.org/10.17182/hepdata.153948.v2/t1","@type":"Dataset","description":"Post-fit $m_\\mathrm{MMC}$ distribution in the low-mass SR for the $m_A = 20\\,\\mathrm{GeV}$ signal mass hypothesis. $m_\\mathrm{MMC}$ is the mass reconstructed...","name":"$m_\\mathrm{MMC}$ distribution in low-mass SR ($m_A$ = 20 GeV)"},{"@id":"https://doi.org/10.17182/hepdata.153948.v2/t2","@type":"Dataset","description":"Post-fit $m_\\mathrm{MMC}$ distribution in the high-mass SR for the $m_A = 90\\,\\mathrm{GeV}$ signal mass hypothesis. $m_\\mathrm{MMC}$ is the mass reconstructed...","name":"$m_\\mathrm{MMC}$ distribution in high-mass SR ($m_A$ = 90 GeV)"},{"@id":"https://doi.org/10.17182/hepdata.153948.v2/t3","@type":"Dataset","description":"Expected and observed $95\\%$ CL limits on the production cross-section for $gg\\rightarrow A$ times the branching ratio for $A$ decaying...","name":"Upper limits on $gg \\rightarrow A \\rightarrow \\tau\\tau$"},{"@id":"https://doi.org/10.17182/hepdata.153948.v2/t4","@type":"Dataset","description":"Expected and observed $95\\%$ CL limits on the absolute value of the up-type quark coupling parameter $|\\zeta_\\mathrm{u}|$ for masses of...","name":"Upper limits on the up-type quark coupling parameter"},{"@id":"https://doi.org/10.17182/hepdata.153948.v2/t5","@type":"Dataset","description":"Observed $p_0$ values for the fits on the production cross-section for $gg\\rightarrow A$ times the branching ratio for $A$ decaying...","name":"$p_0$ value, fit of $gg \\rightarrow A \\rightarrow \\tau\\tau$"}],"identifier":[{"@type":"PropertyValue","propertyID":"HEPDataRecord","value":"https://www.hepdata.net/record/ins2836178?version=2"},{"@type":"PropertyValue","propertyID":"HEPDataRecordAlt","value":"https://www.hepdata.net/record/153948"}],"inLanguage":"en","name":"Search for a light CP-odd Higgs boson decaying into a pair of $\\tau$-leptons in proton-proton collisions at $\\sqrt{s} = 13$ TeV with the ATLAS detector","provider":{"@type":"Organization","name":"HEPData"},"publisher":{"@type":"Organization","name":"HEPData"},"url":"https://www.hepdata.net/record/ins2836178?version=2","version":2}