Abstract
In this paper we report on strangeness measurements in p+p, Au+Au and Cu+Cu collisions at different energies in the STAR detector at RHIC. We will focus on two momentum regions in particular: Firstly we look at strangeness enhancement in A+A collisions with respect to p+p. These yields are dominated by low transverse momentum. We compare the enhancements from Au+Au and Cu+Cu data at s√SNN = 200 GeV with Pb+Pb data at s√SNN = 17.2 GeV and find that the enhancement does not scale with Npart as expected, but rather scales with N1/3part, where Npart represents the number of participants; We then examine Λ/K0S ratios at intermediate transverse momentum in both Au+Au and Cu+Cu data where we find a greater enhancement in Cu+Cu compared to Au+Au data when we compare integrated ratios between 1.5 < pT < 3.5 GeV/c.
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