Systematic measurements of pseudorapidity ($Deltaeta$) and azimuthal ($Deltaphi$) correlations between high-$p_t$ charged hadrons in $sqrt{s_{NN}}$=200 GeV Au+Au collisions are presented. An enhancement of correlated yield at large $Deltaeta$ on the near-side is observed. This effect persists up to trigger $p_{t}^{trig}$ $sim$ 9 GeV/c, indicating that it is associated with jet production. More detailed analysis suggests distinct short-range and long-range components in the correlation.
Download