{"@context":"http://schema.org","@id":"https://doi.org/10.17182/hepdata.114016.v1","@reverse":{"isBasedOn":[{"@type":"ScholarlyArticle","identifier":{"@type":"PropertyValue","propertyID":"URL","value":"https://inspirehep.net/literature/1863041"}},{"@id":"https://doi.org/10.1016/j.physletb.2021.136708","@type":"JournalArticle"}]},"@type":"Dataset","additionalType":"Collection","author":{"@type":"Organization","name":"ALICE Collaboration"},"creator":{"@type":"Organization","name":"ALICE Collaboration"},"datePublished":"2021","description":"CERN-LHC. In quantum scattering processes between two particles, aspects characterizing the strong and Coulomb forces can be observed in kinematic distributions of the particle pairs. The sensitivity to the interaction potential reaches a maximum at low relative momentum and vanishing distance between the two particles. Ultrarelativistic heavy-ion collisions at the LHC provide an abundant source of many hadron species and can be employed as a measurement method of scattering parameters that is complementary to scattering experiments. This study confirms that momentum correlations of particles produced in Pb--Pb collisions at the LHC provide an accurate measurement of  kaon--proton scattering parameters at low relative momentum, allowing precise access to the K- p --> K- p process. This work also validates the femtoscopic measurement in ultrarelativistic heavy-ion collisions as an alternative to scattering experiments and a complementary tool to the study of exotic atoms with comparable precision. In this work, the first femtoscopic measurement of momentum correlations of K- p (K+ ap) and $\\K+ p (k- ap) pairs in Pb--Pb collisions at centre-of-mass energy per nucleon pair of Sqrt(s_NN)=5.02~TeV registered by the ALICE experiment is reported. The components of the K- p complex scattering length are extracted and found to be Re f_0=-0.91 +/- ~{0.03}(stat)^{+0.17}_{-0.03}(syst) and Im f_0 = 0.92+/-~{0.05}(stat)^{+0.12}_{-0.33}(syst). The results are compared with chiral effective field theory predictions as well as with existing data from dedicated scattering and exotic kaonic atom experiments.","hasPart":[{"@id":"https://doi.org/10.17182/hepdata.114016.v1/t1","@type":"Dataset","description":"K p (opposite charge) correlation function for centrality 0-5% from Pb-Pb collisions at 5020 GeV","name":"Figure 2 top left"},{"@id":"https://doi.org/10.17182/hepdata.114016.v1/t2","@type":"Dataset","description":"K p (same charge) correlation function for centrality 0-5% from Pb-Pb collisions at 5020 GeV","name":"Figure 2 top left subfigure"},{"@id":"https://doi.org/10.17182/hepdata.114016.v1/t3","@type":"Dataset","description":"K p (opposite charge) correlation function for centrality 5-10% from Pb-Pb collisions at 5020 GeV","name":"Figure 2 top center"},{"@id":"https://doi.org/10.17182/hepdata.114016.v1/t4","@type":"Dataset","description":"K p (same charge) correlation function for centrality 5-10% from Pb-Pb collisions at 5020 GeV","name":"Figure 2 top center subfigure"},{"@id":"https://doi.org/10.17182/hepdata.114016.v1/t5","@type":"Dataset","description":"K p correlation function for centrality 10-20% from Pb-Pb collisions at 5020 GeV","name":"Figure 2 top right"},{"@id":"https://doi.org/10.17182/hepdata.114016.v1/t6","@type":"Dataset","description":"K p (same charge) correlation function for centrality 10-20% from Pb-Pb collisions at 5020 GeV","name":"Figure 2 top right subfigure"},{"@id":"https://doi.org/10.17182/hepdata.114016.v1/t7","@type":"Dataset","description":"K p correlation function for centrality 20-30% from Pb-Pb collisions at 5020 GeV","name":"Figure 2 bottom left"},{"@id":"https://doi.org/10.17182/hepdata.114016.v1/t8","@type":"Dataset","description":"K p (same charge) correlation function for centrality 20-30% from Pb-Pb collisions at 5020 GeV","name":"Figure 2 bottom left subfigure"},{"@id":"https://doi.org/10.17182/hepdata.114016.v1/t9","@type":"Dataset","description":"K p correlation function for centrality 30-40% from Pb-Pb collisions at 5020 GeV","name":"Figure 2 bottom center"},{"@id":"https://doi.org/10.17182/hepdata.114016.v1/t10","@type":"Dataset","description":"K p (same charge) correlation function for centrality 30-40% from Pb-Pb collisions at 5020 GeV","name":"Figure 2 bottom center subfigure"},{"@id":"https://doi.org/10.17182/hepdata.114016.v1/t11","@type":"Dataset","description":"K p correlation function for centrality 40-50% from Pb-Pb collisions at 5020 GeV","name":"Figure 2 bottom right"},{"@id":"https://doi.org/10.17182/hepdata.114016.v1/t12","@type":"Dataset","description":"K p (same charge) correlation function for centrality 40-50% from Pb-Pb collisions at 5020 GeV","name":"Figure 2 bottom right subfigure"}],"identifier":[{"@type":"PropertyValue","propertyID":"HEPDataRecord","value":"https://www.hepdata.net/record/ins1863041?version=1"},{"@type":"PropertyValue","propertyID":"HEPDataRecordAlt","value":"https://www.hepdata.net/record/114016"}],"inLanguage":"en","name":"Kaon-proton strong interaction at low relative momentum via femtoscopy in Pb-Pb collisions at the LHC","provider":{"@type":"Organization","name":"HEPData"},"publisher":{"@type":"Organization","name":"HEPData"},"url":"https://www.hepdata.net/record/ins1863041?version=1","version":1}