Probing Strangeness Canonical Ensemble with $K^{-}$, $\phi(1020)$ and $\Xi^{-}$ Production in Au+Au Collisions at ${\sqrt{s_{NN}} = {3\,GeV}}$

The collaboration
Phys.Lett.B 831 (2022) 137152, 2022.

Abstract (data abstract)
BNL-RHIC. We report on the first multi-differential measurement of $\phi$ meson and $\Xi^{-}$ hyperon production as well as the $\phi/K^-$ and $\phi/\Xi^-$ ratio in Au+Au collisions at ${\sqrt{s_{\mathrm{NN}}} = \mathrm{3\,GeV}}$ with the STAR experiment under its fixed target configuration at RHIC. $\phi$ mesons and $\Xi^{-}$ hyperons are measured through their hadronic decay channels, $\phi\rightarrow K^+K^-$ and $\Xi^-\rightarrow \Lambda\pi^-$. The transverse kinetic energy spectra of $K^-$, $\phi$ and $\Xi^{-}$ are presented in different centrality and rapidity intervals. The total production yields and the ratios within a $4\pi$ coverage are calculated and compared to thermal model predictions. The calculation within grand canonical ensemble framework shows a clear discrepancy from our measurement. Our data favors the canonical ensemble approach employing local strangeness conservation with a small strangeness correlation length ($r_c \leq 4.2$\,fm) in $\mathrm{0--10\%}$ central Au+Au collisions at ${\sqrt{s_{\mathrm{NN}}} = \mathrm{3\,GeV}}$.

• #### Data from Figure 2(a)1

Data from Figure 2a for $K^-$

10.17182/hepdata.110657.v1/t1

• #### Data from Figure 2(b)1

Data from Figure 2b for $K^-$

10.17182/hepdata.110657.v1/t4

• #### Data from Figure 2(c)1

Data from Figure 2c for $K^-$

10.17182/hepdata.110657.v1/t7

Loading Data...

#### Ask a Question

Your question will be emailed to those involved with the submission. Please mention the relevant table.

Please log in to HEPData to send a question.