May 17 – 22, 2021
US/Eastern timezone

Production of pions, kaons, (anti-) protons and (multi-) strange hadrons production in Au+Au collisions at $\sqrt{s_{\rm{NN}}}$ = 54.4 GeV using the STAR detector

May 18, 2021, 9:30 AM
Room B (Zoom)

Room B


zoom co-host: Klaus Dehmelt
Experimental talk Strangeness (Yields)


Yan Huang


Exploring the QCD phase diagram and searching for the QCD critical point are some of the main goals of heavy-ion collision experiments. The yields of identified hadrons and (multi-) strange hadrons provide information about the phase diagram and particle production in these collisions. In 2017 the STAR experiment collected large dataset of Au+Au collisions at 54.4 GeV.

The production of identified hadrons ($\pi^{\pm}$ , $K^{\pm}$, $p$, $\bar{p}$) and strange hadrons ($K_{S}^{0}$, $\Lambda$, $\Xi$, $\Omega$, $\phi$) at mid-rapidity is presented. The results for the transverse momentum spectra, particle yields dN/dy, average transverse momentum ⟨$p_{\rm{T}}$⟩ and particle ratios are presented for different centrality classes. The energy dependence of all these observables will be discussed. The freeze-out conditions in these collisions are obtained using the statistical thermal model. In particular, the strange-to-pion ratios versus charged hadron multiplicity are studied and will be compared to the measurements in heavy-ion collisions at other energies from the BES-I program at RHIC and the ALICE experiment at the LHC.

Collaboration STAR Collaboration

Presentation materials