Fig. 3: Experimental p–Ξ⁻ and p–Ω⁻ correlation functions.

a, b, Measured p–Ξ⁻ (a) and p–Ω⁻ (b) correlation functions in high multiplicity p–p collisions at \(\sqrt{s}=13\,{\rm{TeV}}\) . The experimental data are shown as black symbols. The black vertical bars and the grey boxes represent the statistical and systematic uncertainties. The square brackets show the bin width and the horizontal black lines represent the statistical uncertainty in the determination of the mean k* for each bin. The measurements are compared with theoretical predictions, shown as coloured bands, that assume either Coulomb or Coulomb + strong HAL QCD interactions. For the p–Ω⁻ system the orange band represents the prediction considering only the elastic contributions and the blue band represents the prediction considering both elastic and inelastic contributions. The width of the curves including HAL QCD predictions represents the uncertainty associated with the calculation (see Methods section ‘Corrections of the correlation function’ for details) and the grey shaded band represents, in addition, the uncertainties associated with the determination of the source radius. The width of the Coulomb curves represents only the uncertainty associated with the source radius. The considered radius values are 1.02 ± 0.05 fm for p–Ξ⁻ and 0.95 ± 0.06 fm for p–Ω⁻ pairs, respectively. The inset in b shows an expanded view of the p–Ω⁻ correlation function for C(k*) close to unity. For more details see text.