{"@context":"http://schema.org","@id":"https://doi.org/10.17182/hepdata.165516.v1","@reverse":{"isBasedOn":[{"@type":"ScholarlyArticle","identifier":{"@type":"PropertyValue","propertyID":"URL","value":"https://inspirehep.net/literature/2895566"}},{"@id":"https://doi.org/10.1103/v4mh-3r8z","@type":"JournalArticle"}]},"@type":"Dataset","additionalType":"Collection","author":{"@type":"Organization","name":"ALICE Collaboration"},"creator":{"@type":"Organization","name":"ALICE Collaboration"},"datePublished":"2025","description":"A signal consistent with the $\u03a9$(2012) baryon has been observed with a significance of $15\u03c3$ in pp collisions at $\\sqrt{s}=13$ TeV at the LHC. In this paper, the analysis technique is described and measurements of the mass and width of the $\u03a9$(2012) are reported, along with the first measurement of its transverse-momentum spectrum and yield. This paper corroborates the observation by Belle of this excited $\u03a9$ state and the observation that the $\u03a9$(2012) has a rather narrow width for a strongly decaying resonance. The yield measurement is combined with a statistical thermal model calculation of strange baryon yield ratios to obtain estimates of the $\u03a9{\\rm (2012)}^{-} \\rightarrow \u039e\\overline{\\rm K}$ branching ratios. These results will improve our understanding of the internal structure and mass spectrum of excited baryon states and serve as a baseline for searches regarding modifications of these properties in high-temperature media.","hasPart":[{"@id":"https://doi.org/10.17182/hepdata.165516.v1/t1","@type":"Dataset","description":"The measured mass of $\\Omega(2012)^{-}$ and $\\overline{\\Omega}(2012)^{+}$ (anti)baryons. The uncertainties are (1) statistical and (2) systematic.","name":"Table 1"},{"@id":"https://doi.org/10.17182/hepdata.165516.v1/t2","@type":"Dataset","description":"The measured width of $\\Omega(2012)^{-}$ and $\\overline{\\Omega}(2012)^{+}$ (anti)baryons. The uncertainties are (1) statistical and (2) systematic.","name":"Table 2"},{"@id":"https://doi.org/10.17182/hepdata.165516.v1/t3","@type":"Dataset","description":"The measured $p_{\\mathrm{T}}$ spectrum of $\\Omega(2012)^{-}$ and $\\overline{\\Omega}(2012)^{+}$ (anti)baryons in high-multiplicity proton-proton collisions at $\\sqrt{s}=13$ TeV. The uncertainties are (1)...","name":"Table 3"},{"@id":"https://doi.org/10.17182/hepdata.165516.v1/t4","@type":"Dataset","description":"The $p_{\\mathrm{T}}$-integrated yield $(\\mathrm{d}N/\\mathrm{d}y)$ of $\\Omega(2012)^{-}$ and $\\overline{\\Omega}(2012)^{+}$ (anti)baryons in high-multiplicity proton-proton collisions at $\\sqrt{s}=13$ TeV. The quoted yields are...","name":"Table 4"},{"@id":"https://doi.org/10.17182/hepdata.165516.v1/t5","@type":"Dataset","description":"Mean transverse momentum $\\langle p_{\\mathrm{T}}\\rangle$ of $\\Omega(2012)^{-}$ and $\\overline{\\Omega}(2012)^{+}$ (anti)baryons in high-multiplicity proton-proton collisions at $\\sqrt{s}=13$ TeV. The uncertainties are...","name":"Table 5"},{"@id":"https://doi.org/10.17182/hepdata.165516.v1/t6","@type":"Dataset","description":"Branching ratios for two-body decays of $\\Omega(2012)^{-}$ and $\\overline{\\Omega}(2012)^{+}$ (anti)baryons to $\\Xi\\overline{\\mathrm{K}}$ or $\\overline{\\Xi}\\mathrm{K}$ final states. The results are for...","name":"Table 6"}],"identifier":[{"@type":"PropertyValue","propertyID":"HEPDataRecord","value":"https://www.hepdata.net/record/ins2895566?version=1"},{"@type":"PropertyValue","propertyID":"HEPDataRecordAlt","value":"https://www.hepdata.net/record/165516"}],"inLanguage":"en","name":"Observation of the $\\Omega$(2012) baryon at the LHC","provider":{"@type":"Organization","name":"HEPData"},"publisher":{"@type":"Organization","name":"HEPData"},"url":"https://www.hepdata.net/record/ins2895566?version=1","version":1}