{"@context":"http://schema.org","@id":"https://doi.org/10.17182/hepdata.115579.v1","@reverse":{"isBasedOn":[{"@type":"ScholarlyArticle","identifier":{"@type":"PropertyValue","propertyID":"URL","value":"https://inspirehep.net/literature/1990948"}},{"@id":"https://doi.org/10.1016/j.physletb.2022.137106","@type":"JournalArticle"}]},"@type":"Dataset","additionalType":"Collection","author":{"@type":"Organization","name":"ATLAS Collaboration"},"creator":{"@type":"Organization","name":"ATLAS Collaboration"},"datePublished":"2022","description":"This search, a type not previously performed at ATLAS, uses a comparison of the production cross sections for $e^+ \\mu^-$ and $e^- \\mu^+$ pairs to constrain physics processes beyond the Standard Model. It uses $139 \\text{fb}^{-1}$ of proton$-$proton collision data recorded at $\\sqrt{s} = 13$ TeV at the LHC. Targeting sources of new physics which prefer final states containing $e^{+}\\mu^{-}$ to $e^{-}\\mu^{+}$, the search contains two broad signal regions which are used to provide model-independent constraints on the ratio of cross sections at the 2% level. The search also has two special selections targeting supersymmetric models and leptoquark signatures. Observations using one of these selections are able to exclude, at 95% confidence level, singly produced smuons with masses up to 640 GeV in a model in which the only other light sparticle is a neutralino when the $R$-parity-violating coupling $\\lambda'_{231}$ is close to unity. Observations using the other selection exclude scalar leptoquarks with masses below 1880 GeV when $g_{\\text{1R}}^{eu}=g_{\\text{1R}}^{\\mu c}=1$, at 95% confidence level. The limit on the coupling reduces to $g_{\\text{1R}}^{eu}=g_{\\text{1R}}^{\\mu c}=0.46$ for a mass of 1420 GeV.","hasPart":[{"@id":"https://doi.org/10.17182/hepdata.115579.v1/t1","@type":"Dataset","description":"Observed yields, and (post-fit) expected yields for the data-driven SM estimates. 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