engleski

Strange baryon resonance production in root s(NN)=200 GeV p plus p and Au plus Au collisions

We report the measurements of $\Sigma (1385)$ and $\Lambda (1520)$ production in $p+p$ and $Au+Au$ collisions at $\sqrt{; ; s_{; ; NN}; ; }; ; = 200$ GeV from the STAR collaboration. The yields and the $p_{; ; T}; ; $ spectra are presented and discussed in terms of chemical and thermal freeze-out conditions and compared to model predictions. Thermal and microscopic models do not adequately describe the yields of all the resonances produced in central $Au+Au$ collisions. Our results indicate that there may be a time-span between chemical and thermal freeze-out during which elastic hadronic interactions occur.

p p; colliding beams; scattering; heavy ion; baryon resonance; hadroproduction; Sigma(1385); yield; Lambda(1520); yield

Stranice navedene u časopisu: 2301.