Transport model study of transverse momentum distributions of Pion, kaon, and (anti-)proton production in U+U collisions at √sNN = 193 GeV

The transverse momentum spectra of π ±, k ± and p(p̄) in midrapidity (| y | < 0.1) for nine centrality classes : $0-5%$, $5-10%$, $10-20%$, $20-30%$, $30-40%$, $40-50%$, $50-60%$, $60-70%$ and $70-80%$ in ²³⁸ U+²³⁸ U collisions at √sNN=193 GeV are studied within the framework of the cascade and soft momentum dependent equation of state (SM-EoS) mode of the UrQMD model. Other extracted observables from pT spectra such as average transverse momentum (pT), particle yields ($dN/dy$) and particle ratios are also shown as functions of collision centrality. It is found that the U+U collision process is segmented. Before the collision centrality is $50-60%$, the experimental data are described well using cascade mode when the pT < 1.2 GeV/c. The results are in good agreement with the experimental data using the SM-EoS mode at pT > 1.2 GeV/c. For the case of $60-80%$ centrality, the SM-EoS mode describes the data better. Anti-particle to particle yield ratios indicating pair production is the dominant mechanism of particle production at RHIC energy.