{"@context":"http://schema.org","@id":"https://doi.org/10.17182/hepdata.180087.v1","@reverse":{"isBasedOn":[{"@type":"ScholarlyArticle","identifier":{"@type":"PropertyValue","propertyID":"URL","value":"https://inspirehep.net/literature/3082654"}}]},"@type":"Dataset","additionalType":"Collection","author":{"@type":"Organization","name":"ALICE Collaboration"},"creator":{"@type":"Organization","name":"ALICE Collaboration"},"datePublished":"2026","description":"The centrality dependence of strange ($\\rm K^{0}_{\\mathrm S}$, $\\Lambda+\\bar{\\Lambda}$) and multi-strange ($\\Xi^{-}+\\bar{\\Xi}^{+}$, $\\Omega^{-}+\\bar{\\Omega}^{+}$) hadron production is measured by ALICE in lead$-$lead (Pb$-$Pb) collisions at a centre-of-mass energy per nucleon pair of $\\sqrt{s_{\\mathrm{NN}}}=5.02~\\mathrm{TeV}$, using the full data set collected during LHC Run 2 (2015 and 2018). This is the largest heavy-ion data set analysed to date at the LHC and it allows for the extraction of transverse-momentum ($p_{\\mathrm T}$) spectra and $p_{\\mathrm T}$-integrated yields with unprecedented precision over a broad range of charged-particle multiplicity densities ($\\langle dN_{\\mathrm{ch}}/d\\eta\\rangle_{|\\eta|<0.5}$), probing regions where results from smaller collision systems (pp and p$-$Pb) are also available. The $p_{\\mathrm T}$ spectra evolve with centrality, featuring larger $\\langle p_{\\mathrm T}\\rangle$ in central events for all particles. The $\\Lambda/\\rm K^{0}_{\\mathrm S}$ ratio exhibits the distinctive baryon-to-meson enhancement in the intermediate-$p_{\\mathrm T}$ region, with a maximum that shifts to larger $p_{\\mathrm T}$ for more central collisions. The hadron-to-pion yield ratios are presented as a function of $\\langle dN_{\\mathrm{ch}}/d\\eta\\rangle_{|\\eta|<0.5}$ and compared to results from different collision systems and energies. A smooth connection from pp to Pb$-$Pb is observed, demonstrating that collision system or energy do not play a role in the multiplicity evolution of this observable. The previously reported enhancement of strangeness production in the multiplicity range probed in pp and p$-$Pb collisions saturates in the multiplicity range of the Pb$-$Pb data. These results constitute a key test bench for theoretical models, and a first comparison to the EPOS 4 generator is presented.","hasPart":[{"@id":"https://doi.org/10.17182/hepdata.180087.v1/t1","@type":"Dataset","description":"$\\rm K^{0}_{\\mathrm{S}}$ transverse-momentum spectra in Pb$\u2013$Pb collisions at $\\sqrt{s_{\\mathrm{NN}}}=5.02\\,\\mathrm{TeV}$ for different event centrality intervals.","name":"Figure 3a"},{"@id":"https://doi.org/10.17182/hepdata.180087.v1/t2","@type":"Dataset","description":"$\\Lambda+\\bar{\\Lambda}$ transverse-momentum spectra in Pb$\u2013$Pb collisions at $\\sqrt{s_{\\mathrm{NN}}}=5.02\\,\\mathrm{TeV}$ for different event centrality intervals.","name":"Figure 3b"},{"@id":"https://doi.org/10.17182/hepdata.180087.v1/t3","@type":"Dataset","description":"$\\Xi^{-}+\\bar{\\Xi}^{+}$ transverse-momentum spectra in Pb$\u2013$Pb collisions at $\\sqrt{s_{\\mathrm{NN}}}=5.02\\,\\mathrm{TeV}$ for different event centrality intervals.","name":"Figure 3c"},{"@id":"https://doi.org/10.17182/hepdata.180087.v1/t4","@type":"Dataset","description":"$\\Omega^{-}+\\bar{\\Omega}^{+}$ transverse-momentum spectra in Pb$\u2013$Pb collisions at $\\sqrt{s_{\\mathrm{NN}}}=5.02\\,\\mathrm{TeV}$ for different event centrality intervals.","name":"Figure 3d"},{"@id":"https://doi.org/10.17182/hepdata.180087.v1/t5","@type":"Dataset","description":"$\\langle p_{\\mathrm{T}}\\rangle$ as a function of $\\langle \\mathrm{d}N_{\\mathrm{ch}}/\\mathrm{d}\\eta \\rangle$ for $\\rm K^{0}_{\\mathrm{S}},\\,\\Lambda,\\,\\Xi,$ and $\\Omega$ production in Pb$\u2013$Pb collisions at $\\sqrt{s_{\\mathrm{NN}}}=5.02\\,\\mathrm{TeV}$...","name":"Figure 4a"},{"@id":"https://doi.org/10.17182/hepdata.180087.v1/t6","@type":"Dataset","description":"$\\Lambda/\\rm K^{0}_{\\mathrm{S}}$ ratio as a function of $p_{\\mathrm{T}}$ in Pb$\u2013$Pb collisions at $\\sqrt{s_{\\mathrm{NN}}}=5.02\\,\\mathrm{TeV}$ for different event centrality intervals.","name":"Figure 4b"},{"@id":"https://doi.org/10.17182/hepdata.180087.v1/t7","@type":"Dataset","description":"Integrated particle yields ($\\mathrm{d}N/\\mathrm{d}y$) as a function of centrality for $\\rm K^{0}_{\\mathrm{S}},\\,\\Lambda+\\bar{\\Lambda},\\,\\Xi^{-}+\\bar{\\Xi}^{+},\\,\\Omega^{-}+\\bar{\\Omega}^{+}$ in Pb$\u2013$Pb collisions at $\\sqrt{s_{\\mathrm{NN}}}=5.02\\,\\mathrm{TeV}$. The value $0.00$...","name":"Table 3a"},{"@id":"https://doi.org/10.17182/hepdata.180087.v1/t8","@type":"Dataset","description":"$\\langle p_{\\mathrm{T}}\\rangle$ as a function of centrality for $\\rm K^{0}_{\\mathrm{S}},\\,\\Lambda+\\bar{\\Lambda},\\,\\Xi^{-}+\\bar{\\Xi}^{+},\\,\\Omega^{-}+\\bar{\\Omega}^{+}$ in Pb$\u2013$Pb collisions at $\\sqrt{s_{\\mathrm{NN}}}=5.02\\,\\mathrm{TeV}$. The value $0.00$ indicates negligible...","name":"Table 3b"},{"@id":"https://doi.org/10.17182/hepdata.180087.v1/t9","@type":"Dataset","description":"$\\rm K^{0}_{\\mathrm{S}},\\,\\Lambda+\\bar{\\Lambda},\\,\\Xi^{-}+\\bar{\\Xi}^{+},\\,\\Omega^{-}+\\bar{\\Omega}^{+}$ yield ratios to $(\\pi^{-}+\\pi^{+})$ in Pb$\u2013$Pb collisions at $\\sqrt{s_{\\mathrm{NN}}}=5.02\\,\\mathrm{TeV}$ as a function of charged-particle multiplicity density at midrapidity.","name":"Figure 5"}],"identifier":[{"@type":"PropertyValue","propertyID":"HEPDataRecord","value":"https://www.hepdata.net/record/ins3082654?version=1"},{"@type":"PropertyValue","propertyID":"HEPDataRecordAlt","value":"https://www.hepdata.net/record/180087"}],"inLanguage":"en","name":"Centrality dependence of strange particle production in Pb-Pb collisions at $\\sqrt{s_{\\rm NN}} = 5.02$ TeV","provider":{"@type":"Organization","name":"HEPData"},"publisher":{"@type":"Organization","name":"HEPData"},"url":"https://www.hepdata.net/record/ins3082654?version=1","version":1}