{"@context":"http://schema.org","@id":"https://doi.org/10.17182/hepdata.150998.v1","@reverse":{"isBasedOn":[{"@type":"ScholarlyArticle","identifier":{"@type":"PropertyValue","propertyID":"URL","value":"https://inspirehep.net/literature/2773613"}},{"@id":"https://doi.org/10.1140/epjc/s10052-024-12994-1","@type":"JournalArticle"}]},"@type":"Dataset","additionalType":"Collection","author":{"@type":"Organization","name":"ATLAS Collaboration"},"creator":{"@type":"Organization","name":"ATLAS Collaboration"},"datePublished":"2024","description":"- CERN-LHC. A search is presented for flavour-changing neutral-current interactions involving the top quark, the Higgs boson and an up-type quark ($q=u,c$) with the ATLAS detector at the Large Hadron Collider. The analysis considers leptonic decays of the top quark along with Higgs boson decays into two $W$ bosons, two $Z$ bosons or a $\\tau^{+}\\tau^{-}$ pair. It focuses on final states containing either two leptons (electrons or muons) of the same charge or three leptons. The considered processes are $t\\bar{t}$ and $Ht$ production. For the $t\\bar{t}$ production, one top quark decays via $t\\to Hq$. The proton-proton collision data set analysed amounts to 140 fb$^{-1}$ at $\\sqrt{s}=13$ TeV. No significant excess beyond Standard Model expectations is observed and upper limits are set on the $t\\to Hq$ branching ratios at 95\\,\\% confidence level, amounting to observed (expected) limits of $\\mathcal{B}(t\\to Hu)<2.8\\,(3.0) \\times 10^{-4}$ and $\\mathcal{B}(t\\to Hc)<3.3\\,(3.8) \\times 10^{-4}$. Combining this search with other searches for $tHq$ flavour-changing neutral-current interactions previously conducted by ATLAS, considering $H\\to b\\bar{b}$ and $H\\to\\gamma\\gamma$ decays, as well as $H\\to\\tau^{+}\\tau^{-}$ decays with one or two hadronically decaying $\\tau$-leptons, yields observed (expected) upper limits on the branching ratios of $\\mathcal{B}(t\\to Hu)<2.6\\,(1.8) \\times 10^{-4}$ and $\\mathcal{B}(t\\to Hc)<3.4\\,(2.3) \\times 10^{-4}$.","hasPart":[{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t1","@type":"Dataset","description":"Pre-fit background composition of the SR$2\\ell$ Dec. The table shows the event yields as opposed to just the percentages of...","name":"SR$2\\ell$ Dec pre-fit background composition"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t2","@type":"Dataset","description":"Pre-fit background composition of the SR$2\\ell$ Prod. The table shows the event yields as opposed to just the percentages of...","name":"SR$2\\ell$ Prod pre-fit background composition"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t3","@type":"Dataset","description":"Pre-fit background composition of the SR$3\\ell$ Dec. The table shows the event yields as opposed to just the percentages of...","name":"SR$3\\ell$ Dec pre-fit background composition"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t4","@type":"Dataset","description":"Pre-fit background composition of the SR$3\\ell$ Prod. The table shows the event yields as opposed to just the percentages of...","name":"SR$3\\ell$ Prod pre-fit background composition"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t5","@type":"Dataset","description":"Post-fit plot of $H_\\text{T}(\\text{jets})$ in the SR$2\\ell$ Dec from a signal-blinded background-only fit.","name":"SR$2\\ell$ Dec $H_\\text{T}(\\text{jets})$ post-fit"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t6","@type":"Dataset","description":"Post-fit plot of $m(t_\\text{SM}, b\\text{-jet}_0)$ in the SR$2\\ell$ Prod from a signal-blinded background-only fit.","name":"SR$2\\ell$ Prod $m(t_\\text{SM}, b\\text{-jet}_0)$ post-fit"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t7","@type":"Dataset","description":"Post-fit plot of $m(\\ell_\\text{OS},\\ell_\\text{SS,1})$ in the SR$3\\ell$ Dec from a signal-blinded background-only fit.","name":"SR$3\\ell$ Dec $m(\\ell_\\text{OS},\\ell_\\text{SS,1})$ post-fit"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t8","@type":"Dataset","description":"Post-fit plot of $m(\\ell_\\text{OS},\\ell_\\text{SS,1})$ in the SR$3\\ell$ Prod from a signal-blinded background-only fit.","name":"SR$3\\ell$ Prod $m(\\ell_\\text{OS},\\ell_\\text{SS,1})$ post-fit"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t9","@type":"Dataset","description":"Post-fit plot of $D_\\text{NN}(tHc)$ in the SR$2\\ell$ Dec from the full fit to data.","name":"SR$2\\ell$ Dec $D_\\text{NN}(tHc)$ post-fit"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t10","@type":"Dataset","description":"Post-fit plot of $D_\\text{NN}(tHc)$ in the SR$2\\ell$ Prod from the full fit to data.","name":"SR$2\\ell$ Prod $D_\\text{NN}(tHc)$ post-fit"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t11","@type":"Dataset","description":"Post-fit plot of $D_\\text{NN}(tHc)$ in the SR$3\\ell$ Dec from the full fit to data.","name":"SR$3\\ell$ Dec $D_\\text{NN}(tHc)$ post-fit"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t12","@type":"Dataset","description":"Post-fit plot of $D_\\text{NN}(tHc)$ in the SR$3\\ell$ Prod from the full fit to data.","name":"SR$3\\ell$ Prod $D_\\text{NN}(tHc)$ post-fit"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t13","@type":"Dataset","description":"Post-fit plot of $p_\\text{T}(\\ell_1)$ in the CR$2\\ell$ HF$e$ from the full fit to data.","name":"CR$2\\ell$ HF$e$ $p_\\text{T}(\\ell_1)$ post-fit"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t14","@type":"Dataset","description":"Post-fit plot of $p_\\text{T}(\\ell_1)$ in the CR$2\\ell$ HF$\\mu$ from the full fit to data.","name":"CR$2\\ell$ HF$\\mu$ $p_\\text{T}(\\ell_1)$ post-fit"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t15","@type":"Dataset","description":"Post-fit plot of $p_\\text{T}(\\ell_1)$ in the CR$2\\ell$ $t\\bar{t}V$ from the full fit to data.","name":"CR$2\\ell$ $t\\bar{t}V$ $p_\\text{T}(\\ell_1)$ post-fit"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t16","@type":"Dataset","description":"Post-fit plot of $p_\\text{T}(\\ell_2)$ in the CR$3\\ell$ HF$e$ from the full fit to data.","name":"CR$3\\ell$ HF$e$ $p_\\text{T}(\\ell_2)$ post-fit"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t17","@type":"Dataset","description":"Post-fit plot of $p_\\text{T}(\\ell_2)$ in the CR$3\\ell$ HF$\\mu$ from the full fit to data.","name":"CR$3\\ell$ HF$\\mu$ $p_\\text{T}(\\ell_2)$ post-fit"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t18","@type":"Dataset","description":"Post-fit plot of $p_\\text{T}(b\\text{-jet}_0)$ in the CR$3\\ell$ $t\\bar{t}W$ from the full fit to data.","name":"CR$3\\ell$ $t\\bar{t}W$ $p_\\text{T}(b\\text{-jet}_0)$ post-fit"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t19","@type":"Dataset","description":"Post-fit plot of $p_\\text{T}(b\\text{-jet}_0)$ in the CR$3\\ell$ $t\\bar{t}Z$ from the full fit to data.","name":"CR$3\\ell$ $t\\bar{t}Z$ $p_\\text{T}(b\\text{-jet}_0)$ post-fit"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t20","@type":"Dataset","description":"Observed and expected upper exclusion limits on the branching ratio $\\mathcal{B}(t\\to Hu)$ for different analyses and their statistical combination.","name":"Upper limits on $\\mathcal{B}(t\\to Hu)$"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t21","@type":"Dataset","description":"Observed and expected upper exclusion limits on the branching ratio $\\mathcal{B}(t\\to Hc)$ for different analyses and their statistical combination.","name":"Upper limits on $\\mathcal{B}(t\\to Hc)$"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t22","@type":"Dataset","description":"Post-fit normalisation factors of free-floating background processes and the signal normalisation.","name":"Table 6"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t23","@type":"Dataset","description":"Post-fit predicted and observed yields in all $2\\ell$SS signal and control regions. Pre-fit signal contributions for a signal cross section...","name":"Table 7"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t24","@type":"Dataset","description":"Post-fit predicted and observed yields in all $3\\ell$ signal and control regions. Pre-fit signal contributions for a signal cross section...","name":"Table 8"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t25","@type":"Dataset","description":"Expected upper limits on $\\mathcal{B}(t\\to Hq)$ for the nominal fit and alternative fit configurations. One contains the full phase space...","name":"Table 9"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t26","@type":"Dataset","description":"Expected and observed upper limits on $\\mathcal{B}(t\\to Hq)$ and $|C_{u\\phi}^{qt,tq}|$ for the full fit containing all systematic uncertainties.","name":"Table 10"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t27","@type":"Dataset","description":"Pre-fit plot of $H_\\text{T}(\\text{jets})$ in the SR$2\\ell$ Dec from a signal-blinded background-only fit.","name":"SR$2\\ell$ Dec $H_\\text{T}(\\text{jets})$ pre-fit"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t28","@type":"Dataset","description":"Pre-fit plot of $m(t_\\text{SM}, b\\text{-jet}_0)$ in the SR$2\\ell$ Prod from a signal-blinded background-only fit.","name":"SR$2\\ell$ Prod $m(t_\\text{SM}, b\\text{-jet}_0)$ pre-fit"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t29","@type":"Dataset","description":"Pre-fit plot of $m(\\ell_\\text{OS},\\ell_\\text{SS,1})$ in the SR$3\\ell$ Dec from a signal-blinded background-only fit.","name":"SR$3\\ell$ Dec $m(\\ell_\\text{OS},\\ell_\\text{SS,1})$ pre-fit"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t30","@type":"Dataset","description":"Pre-fit plot of $m(\\ell_\\text{OS},\\ell_\\text{SS,1})$ in the SR$3\\ell$ Prod from a signal-blinded background-only fit.","name":"SR$3\\ell$ Prod $m(\\ell_\\text{OS},\\ell_\\text{SS,1})$ pre-fit"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t31","@type":"Dataset","description":"Post-fit plot of $D_\\text{NN}(tHu)$ in the SR$2\\ell$ Dec from the full fit to data.","name":"SR$2\\ell$ Dec $D_\\text{NN}(tHu)$ post-fit"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t32","@type":"Dataset","description":"Post-fit plot of $D_\\text{NN}(tHu)$ in the SR$2\\ell$ Prod from the full fit to data.","name":"SR$2\\ell$ Prod $D_\\text{NN}(tHu)$ post-fit"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t33","@type":"Dataset","description":"Post-fit plot of $D_\\text{NN}(tHu)$ in the SR$3\\ell$ Dec from the full fit to data.","name":"SR$3\\ell$ Dec $D_\\text{NN}(tHu)$ post-fit"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t34","@type":"Dataset","description":"Post-fit plot of $D_\\text{NN}(tHu)$ in the SR$3\\ell$ Prod from the full fit to data.","name":"SR$3\\ell$ Prod $D_\\text{NN}(tHu)$ post-fit"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t35","@type":"Dataset","description":"Pre-fit plot of $D_\\text{NN}(tHc)$ in the SR$2\\ell$ Dec from the full fit to data.","name":"SR$2\\ell$ Dec $D_\\text{NN}(tHc)$ pre-fit"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t36","@type":"Dataset","description":"Pre-fit plot of $D_\\text{NN}(tHc)$ in the SR$2\\ell$ Prod from the full fit to data.","name":"SR$2\\ell$ Prod $D_\\text{NN}(tHc)$ pre-fit"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t37","@type":"Dataset","description":"Pre-fit plot of $D_\\text{NN}(tHc)$ in the SR$3\\ell$ Dec from the full fit to data.","name":"SR$3\\ell$ Dec $D_\\text{NN}(tHc)$ pre-fit"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t38","@type":"Dataset","description":"Pre-fit plot of $D_\\text{NN}(tHc)$ in the SR$3\\ell$ Prod from the full fit to data.","name":"SR$3\\ell$ Prod $D_\\text{NN}(tHc)$ pre-fit"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t39","@type":"Dataset","description":"Pre-fit plot of $D_\\text{NN}(tHu)$ in the SR$2\\ell$ Dec from the full fit to data.","name":"SR$2\\ell$ Dec $D_\\text{NN}(tHu)$ pre-fit"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t40","@type":"Dataset","description":"Pre-fit plot of $D_\\text{NN}(tHu)$ in the SR$2\\ell$ Prod from the full fit to data.","name":"SR$2\\ell$ Prod $D_\\text{NN}(tHu)$ pre-fit"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t41","@type":"Dataset","description":"Pre-fit plot of $D_\\text{NN}(tHu)$ in the SR$3\\ell$ Dec from the full fit to data.","name":"SR$3\\ell$ Dec $D_\\text{NN}(tHu)$ pre-fit"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t42","@type":"Dataset","description":"Pre-fit plot of $D_\\text{NN}(tHu)$ in the SR$3\\ell$ Prod from the full fit to data.","name":"SR$3\\ell$ Prod $D_\\text{NN}(tHu)$ pre-fit"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t43","@type":"Dataset","description":"Pre-fit plot of $p_\\text{T}(\\ell_1)$ in the CR$2\\ell$ HF$e$ from the full fit to data.","name":"CR$2\\ell$ HF$e$ $p_\\text{T}(\\ell_1)$ pre-fit"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t44","@type":"Dataset","description":"Pre-fit plot of $p_\\text{T}(\\ell_1)$ in the CR$2\\ell$ HF$\\mu$ from the full fit to data.","name":"CR$2\\ell$ HF$\\mu$ $p_\\text{T}(\\ell_1)$ pre-fit"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t45","@type":"Dataset","description":"Pre-fit plot of $p_\\text{T}(\\ell_1)$ in the CR$2\\ell$ $t\\bar{t}V$ from the full fit to data.","name":"CR$2\\ell$ $t\\bar{t}V$ $p_\\text{T}(\\ell_1)$ pre-fit"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t46","@type":"Dataset","description":"Pre-fit plot of $p_\\text{T}(\\ell_2)$ in the CR$3\\ell$ HF$e$ from the full fit to data.","name":"CR$3\\ell$ HF$e$ $p_\\text{T}(\\ell_2)$ pre-fit"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t47","@type":"Dataset","description":"Pre-fit plot of $p_\\text{T}(\\ell_2)$ in the CR$3\\ell$ HF$\\mu$ from the full fit to data.","name":"CR$3\\ell$ HF$\\mu$ $p_\\text{T}(\\ell_2)$ pre-fit"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t48","@type":"Dataset","description":"Pre-fit plot of $p_\\text{T}(b\\text{-jet}_0)$ in the CR$3\\ell$ $t\\bar{t}W$ from the full fit to data.","name":"CR$3\\ell$ $t\\bar{t}W$ $p_\\text{T}(b\\text{-jet}_0)$ pre-fit"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t49","@type":"Dataset","description":"Pre-fit plot of $p_\\text{T}(b\\text{-jet}_0)$ in the CR$3\\ell$ $t\\bar{t}Z$ from the full fit to data.","name":"CR$3\\ell$ $t\\bar{t}Z$ $p_\\text{T}(b\\text{-jet}_0)$ pre-fit"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t50","@type":"Dataset","description":"Ranking of fit nuisance parameters according to their impact on the post-fit $tHu$ signal normalisation when fixed to $\\pm1\\sigma$","name":"$tHu$ fit NP ranking"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t51","@type":"Dataset","description":"Ranking of fit nuisance parameters according to their impact on the post-fit $tHc$ signal normalisation when fixed to $\\pm1\\sigma$","name":"$tHc$ fit NP ranking"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t52","@type":"Dataset","description":"Expected upper exclusion limits on the branching ratio $\\mathcal{B}(t\\to Hu)$ for each individual final state and the full analysis.","name":"Upper limits on $\\mathcal{B}(t\\to Hu)$ per final state"},{"@id":"https://doi.org/10.17182/hepdata.150998.v1/t53","@type":"Dataset","description":"Expected upper exclusion limits on the branching ratio $\\mathcal{B}(t\\to Hc)$ for each individual final state and the full analysis.","name":"Upper limits on $\\mathcal{B}(t\\to Hc)$ per final state"}],"identifier":[{"@type":"PropertyValue","propertyID":"HEPDataRecord","value":"https://www.hepdata.net/record/ins2773613?version=1"},{"@type":"PropertyValue","propertyID":"HEPDataRecordAlt","value":"https://www.hepdata.net/record/150998"}],"inLanguage":"en","name":"Search for flavour-changing neutral-current couplings between the top quark and the Higgs boson in multi-lepton final states in 13 TeV $pp$ collisions with the ATLAS detector","provider":{"@type":"Organization","name":"HEPData"},"publisher":{"@type":"Organization","name":"HEPData"},"url":"https://www.hepdata.net/record/ins2773613?version=1","version":1}