Production of $\Sigma(1385)^\pm$ and $\Xi(1530)^0$ in p–Pb collisions at $\sqrt{{s}_{{\rm{N}}{\rm{N}}}}={\rm{5.02\; TeV}}$ measured by ALICE at the LHC

In order to study the hot hadronic matter created in heavy-ion collisions, it is important to compare particle production in large systems to that in smaller systems, such as proton-proton (pp) and proton-lead (p–Pb) collisions. In particular, resonances with different lifetimes are good candidates to probe the interplay of particle re-scattering and regeneration in the hadronic phase. The yields of the strange and double-strange hyperon resonances Σ(1385)(±) and Ξ(1530)(0) are measured in the rapidity range −0.5 < y(CMS) < 0 in p–Pb collisions at $\sqrt{{s}_{{\rm{N}}{\rm{N}}}}={\rm{5.02\, TeV}}$ with the ALICE detector at the LHC. We report on the transverse momentum distributions and mean transverse momentum as a function of the charged-particle multiplicity. These results complement the information derived from the measurements of other resonances such as K*(892)(0) and ˚(1020). The multiplicity dependence of the integrated yield ratios of excited hyperons to longer-lived particles is discussed and compared to model predictions from pQCD-inspired models such as PYTHIA8 as well as statistical hadronization models.