{"@context":"http://schema.org","@id":"https://doi.org/10.17182/hepdata.144917.v1","@reverse":{"isBasedOn":[{"@type":"ScholarlyArticle","identifier":{"@type":"PropertyValue","propertyID":"URL","value":"https://inspirehep.net/literature/2711979"}},{"@id":"https://doi.org/10.1007/JHEP02(2024)037","@type":"JournalArticle"}]},"@type":"Dataset","additionalType":"Collection","author":{"@type":"Organization","name":"ATLAS Collaboration"},"creator":{"@type":"Organization","name":"ATLAS Collaboration"},"datePublished":"2024","description":"A search for non-resonant Higgs boson pair ($HH$) production is presented, in which one of the Higgs bosons decays to a b-quark pair ($b\\bar b$) and the other decays to $WW^*$, $ZZ^*$, or $\\tau^+\\tau^-$, with in each case a final state with $\\ell^+\\ell^- +$ neutrinos ($\\ell = e, \\mu$). The analysis targets separately the gluon-gluon fusion and vector boson fusion production modes. Data recorded by the ATLAS detector in proton-proton collisions at a centre-of-mass energy of 13 TeV at the Large Hadron Collider, corresponding to an integrated luminosity of $140\\mathrm{fb}^{-1}$, are used in this analysis. Events are selected to have exactly two $b$-tagged jets and two leptons with opposite electric charge and missing transverse momentum in the final state. These events are classified using multivariate analysis algorithms to separate the $HH$ events from other Standard Model processes. No evidence of the signal is found. The observed (expected) upper limit on the cross-section for non-resonant Higgs boson pair production is determined to be 9.7 (16.2) times the Standard Model prediction at 95% confidence level. The Higgs boson self-interaction coupling parameter $\\kappa_\\lambda$ and the quadrilinear coupling parameter $\\kappa_{2V}$ are each separately constrained by this analysis to be within the ranges ${[-6.2, 13.3]}$ and ${[-0.17, 2.4]}$, respectively, at 95% confidence level, when all other parameters are fixed.","hasPart":[{"@id":"https://doi.org/10.17182/hepdata.144917.v1/t1","@type":"Dataset","description":"Pre-fit yields of the $t\\bar{t}$, $Z$+HF and $Wt$ CRs, both for the ggF and VBF event selection, as well as...","name":"Table 1 (pre-fit yields)"},{"@id":"https://doi.org/10.17182/hepdata.144917.v1/t2","@type":"Dataset","description":"Post-fit yields from the signal+background fit of the $t\\bar{t}$, $Z$+HF and $Wt$ CRs, both for the ggF and VBF event...","name":"Table 2 (post-fit yields)"},{"@id":"https://doi.org/10.17182/hepdata.144917.v1/t3","@type":"Dataset","description":"Observed and expected upper limits on the ratios of the Higgs boson pair production cross-section to the corresponding Standard Model...","name":"Table 3 (95% CL upper limits on cross-section)"},{"@id":"https://doi.org/10.17182/hepdata.144917.v1/t4","@type":"Dataset","description":"Likelihood profiles of the $\\kappa_\\lambda$ parameter.","name":"Table 4 ($\\kappa_\\lambda$ likelihood profile)"},{"@id":"https://doi.org/10.17182/hepdata.144917.v1/t5","@type":"Dataset","description":"Likelihood profiles of the $\\kappa_{2V}$ parameter.","name":"Table 5 ($\\kappa_{2V}$ likelihood profile)"},{"@id":"https://doi.org/10.17182/hepdata.144917.v1/t6","@type":"Dataset","description":"The 95% CL upper limits on the $HH$ cross-section for different values of $\\kappa_\\lambda$. The expected limits assume no $HH$...","name":"Table 6 ($\\kappa_\\lambda$ scan)"},{"@id":"https://doi.org/10.17182/hepdata.144917.v1/t7","@type":"Dataset","description":"The 95% CL upper limits on the VBF $HH$ cross section for different values of $\\kappa_{2V}$. The expected limits assume...","name":"Table 7 ($\\kappa_{2V}$ scan)"}],"identifier":[{"@type":"PropertyValue","propertyID":"HEPDataRecord","value":"https://www.hepdata.net/record/ins2711979?version=1"},{"@type":"PropertyValue","propertyID":"HEPDataRecordAlt","value":"https://www.hepdata.net/record/144917"}],"inLanguage":"en","name":"Search for non-resonant Higgs boson pair production in the $2b + 2\\ell + E_\\mathrm{T}^\\mathrm{miss}$ final state in $pp$ collisions at $\\sqrt{s} = 13\\mathrm{TeV}$ with the ATLAS detector","provider":{"@type":"Organization","name":"HEPData"},"publisher":{"@type":"Organization","name":"HEPData"},"url":"https://www.hepdata.net/record/ins2711979?version=1","version":1}