Measurements of $\Xi(1530)^{0}$ and $\bar{\Xi}(1530)^{0}$ production in proton-proton interactions at $\sqrt{s_{NN}}=17.3$ GeV in the NA61/SHINE experiment

Double-differential yields of Ξ(1530)⁰ and <span class=o>Ξ</span>(1530)⁰ resonances produced in p+p interactions were measured at a laboratory beam momentum of 158 GeV/c. This measurement is the first of its kind in p+p interactions below LHC energies. It was performed at the CERN SPS by the NA61/SHINE collaboration. Double-differential distributions in rapidity and transverse momentum were obtained from a sample of 26x10⁶ inelastic events. The spectra are extrapolated to full phase space resulting in mean multiplicity of Ξ(1530)⁰ (6.73±0.25±0.67)x10^-4 and <span class=o>Ξ</span>(1530)⁰ (2.71±0.18±0.18)x10^-4. The rapidity and transverse momentum spectra and mean multiplicities were compared to predictions of string-hadronic and statistical model calculations.