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We present data on charged kaons (K+-) and {phi} mesons in Au(1.23A GeV)+Au collisions. It is the first simultaneous measurement of K and {phi} mesons in central heavy-ion collisions below a kinetic beam energy of 10A GeV. The {phi}/K- multiplicity ratio is found to be surprisingly high with a value of 0.52 +- 0.16 and shows no dependence on the centrality of the collision. Consequently, the different slopes of the K+ and K- transverse-mass spectra can be explained solely by feed- down, which substantially softens the spectra of K- mesons. Hence, in contrast to the commonly adapted argumentation in literature, the different slopes do not necessarily imply diverging freeze- out temperatures of K+ and K- mesons caused by different couplings to baryons.
We present first data on sub-threshold production of K0 s mesons and {Lambda} hyperons in Au+Au collisions at $sqrt{s_{NN}}$ = 2.4 GeV. We observe an universal <Apart> scaling of hadrons containing strangeness, independent of their corresponding prod
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 ${sqrt{s_{rm NN}} = rm{3,GeV}}$ with the STAR experiment under its fixed targ et
We report on K*0 production at mid-rapidity in Au+Au and Cu+Cu collisions at sqrt{s_{NN}} = 62.4 and 200 GeV collected by the Solenoid Tracker at RHIC (STAR) detector. The K*0 is reconstructed via the hadronic decays K*0 to K+ pi- and bar{K*0} to K-p
The properties of the phi-meson have been measured via its e+e- and K+K- decay channels in Au+Au collisions at sqrt{s_NN} = 200 GeV by the PHENIX experiment. The preliminary yields and temperatures derived for the minimum bias and several centrality bins in both decay channels are presented.
Rapidity-odd directed flow measurements at midrapidity are presented for $Lambda$, $bar{Lambda}$, $K^pm$, $K^0_s$ and $phi$ at $sqrt{s_{NN}} =$ 7.7, 11.5, 14.5, 19.6, 27, 39, 62.4 and 200 GeV in Au+Au collisions recorded by the STAR detector at the R