{"@context":"http://schema.org","@id":"https://doi.org/10.17182/hepdata.130958.v1","@reverse":{"isBasedOn":[{"@type":"ScholarlyArticle","identifier":{"@type":"PropertyValue","propertyID":"URL","value":"https://inspirehep.net/literature/2141572"}},{"@id":"https://doi.org/10.1007/JHEP06(2023)155","@type":"JournalArticle"}]},"@type":"Dataset","additionalType":"Collection","author":{"@type":"Organization","name":"ATLAS Collaboration"},"creator":{"@type":"Organization","name":"ATLAS Collaboration"},"datePublished":"2022","description":"Search for flavour-changing neutral current interactions of the top quark and the Higgs boson in events with a pair of $\\tau$-leptons in pp collisions at $\\sqrt{s}=13$TeV with the ATLAS detector\nA search for flavour-changing neutral current (FCNC) $tqH$ interactions involving a top quark, another up-type quark ($q=u, c$), and a Standard Model (SM) Higgs boson decaying into a $\\tau$-lepton pair ($H\\rightarrow \\tau^+\\tau^-$) is presented. The search is based on a dataset of $pp$ collisions at $\\sqrt{s}=13$TeV that corresponds to an integrated luminosity of 139 fb$^{-1}$ recorded with the ATLAS detector at the Large Hadron Collider. Two processes are considered,single top quark FCNC production in association with a Higgs boson ($pp\\rightarrow tH$), and top quark pair production in which one of top quarks decays into $Wb$ and the other decays into $qH$ through the FCNC interactions. The search selects events with two hadronically decaying $\\tau$-lepton candidates ($\\tau_{h}$) or at least one $\\tau_{h}$ with an additional lepton (e,$\\mu$), as well as multiple jets. Event kinematics are used to separate signal from the background through a multivariate discriminant. A slight excess of data is observed with a significance of 2.3$\\sigma$ above the expected SM background, and 95% CL upper limits on the $t\\to qH$ branching ratios are derived. Observed (expected) 95% CL upper limits are set on the $t\\to cH$ and $t\\to uH$ branching ratios of $9.4 \\times 10^{-4}\\, (4.8^{+2.2}_{-1.4}\\times 10^{-4})$ and $6.9\\times 10^{-4}\\, (3.5^{+1.5}_{-1.0}\\times 10^{-4})$, respectively. The corresponding combined observed (expected) upper limits on the dimension-6 operator Wilson coefficients in the effective $tqH$ couplings are $C_{c\\phi} <1.35\\, (0.97)$ and $C_{u\\phi} <1.16\\, (0.82)$, respectively.","hasPart":[{"@id":"https://doi.org/10.17182/hepdata.130958.v1/t1","@type":"Dataset","description":"Leading tau Pt distributions obtained before the fit to data (Pre-Fit) showing the expected background and tuH signals after applying...","name":"Figure 1a"},{"@id":"https://doi.org/10.17182/hepdata.130958.v1/t2","@type":"Dataset","description":"Leading tau Pt distributions obtained before the fit to data (Pre-Fit) showing the expected background and tuH signals after applying...","name":"Figure 1b"},{"@id":"https://doi.org/10.17182/hepdata.130958.v1/t3","@type":"Dataset","description":"Leading tau Pt distributions obtained before the fit to data (Pre-Fit) showing the expected background and tuH signals after applying...","name":"Figure 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The values in...","name":"Fit, FCNC"}],"identifier":[{"@type":"PropertyValue","propertyID":"HEPDataRecord","value":"https://www.hepdata.net/record/ins2141572?version=1"},{"@type":"PropertyValue","propertyID":"HEPDataRecordAlt","value":"https://www.hepdata.net/record/130958"}],"inLanguage":"en","name":"Search for flavour-changing neutral current interactions of the top quark and the Higgs boson in events with a pair of $\\tau$-leptons in pp 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/ins2141572?version=1","version":1}