Abstract: System size and energy dependence of high-pT triggered correlations in STAR
Previous studies have indicated that the near-side peak of high-pT triggered correlations can be decomposed into
two parts, the and the The is narrow in both azimuth and pseudorapidity
and has properties consistent with vacuum fragmentation, while the is narrow in azimuth but broad
in pseudorapidity and roughly independent of pseudorapidity within STAR's acceptance. Attempts have been made to explain
the production of the component as coming from recombination, momentum kicks, and a plasma instability.
However, few models have attempted to quantitatively calculate the characteristics of the We present data
from Cu+Cu and Au+Au collisions at = 62 GeV and 200 GeV, which should allow
more robust tests of models. The yields of the and components are presented in
both systems and at both energies. At = 200 GeV the data are compared for
h, $Lambda$, $K0_S$, a!
nd $Xi$ trigger and associated particles. The trends in energy, system, and particle type dependence
of the and present a more accessible be test for models than the absolute
yields. The wealth of data should help distinguish models for the production mechanism of the