Production of Σ(1385)± and Ξ(1530)0 in p-Pb collisions at sNN=5.02 TeV

Abstract

The transverse momentum distributions of the strange and double-strange hyperon resonances ($\Sigma {\left(1385\right)}^{\pm }$, $\Xi {\left(1530\right)}^0$) produced in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV were measured in the rapidity range $-0.5<y_{\mathrm{CMS}}<0$ for event classes corresponding to different charged-particle multiplicity densities, $⟨$d$N_{\mathrm{ch}}$/d${\eta }_{\mathrm{lab}}⟩$. The mean transverse momentum values are presented as a function of $⟨$d$N_{\mathrm{ch}}$/d${\eta }_{\mathrm{lab}}⟩$, as well as a function of the particle masses and compared with previous results on hyperon production. The integrated yield ratios of excited to ground-state hyperons are constant as a function of $⟨$d$N_{\mathrm{ch}}$/d${\eta }_{\mathrm{lab}}⟩$. The equivalent ratios to pions exhibit an increase with $⟨$d$N_{\mathrm{ch}}$/d${\eta }_{\mathrm{lab}}⟩$, depending on their strangeness content.