اشترك بالحزمة الذهبية واحصل على وصول غير محدود شمرا أكاديميا
تسجيل مستخدم جديدBulk Properties of the System Formed in Au+Au Collisions at $sqrt{s_{mathrm{NN}}}$ = 14.5 GeV
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We report systematic measurements of bulk properties of the system created in Au+Au collisions at $sqrt{s_{mathrm{NN}}}$ = 14.5 GeV recorded by the STAR detector at the Relativistic Heavy Ion Collider (RHIC).The transverse momentum spectra of $pi^{pm}$, $K^{pm}$ and $p(bar{p})$ are studied at mid-rapidity ($|y| < 0.1$) for nine centrality intervals. The centrality, transverse momentum ($p_T$),and pseudorapidity ($eta$) dependence of inclusive charged particle elliptic flow ($v_2$), and rapidity-odd charged particles directed flow ($v_{1}$) results near mid-rapidity are also presented. These measurements are compared with the published results from Au+Au collisions at other energies, and from Pb+Pb collisions at $sqrt{s_{mathrm{NN}}}$ = 2.76 TeV. The results at $sqrt{s_{mathrm{NN}}}$ = 14.5 GeV show similar behavior as established at other energies and fit well in the energy dependence trend. These results are important as the 14.5 GeV energy fills the gap in $mu_B$, which is of the order of 100 MeV,between $sqrt{s_{mathrm{NN}}}$ =11.5 and 19.6 GeV. Comparisons of the data with UrQMD and AMPT models show poor agreement in general.
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