Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Intra-jet correlations of high-$p_t$ hadrons from STAR   Systematic measurements of pseudorapidity ($\Delta\eta$) and azimuthal
($\Delta\phi$) 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 $\Delta\eta$ 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.

4
The categories of this paper are: cond-mat
13
The categories of this paper are: quant-ph
8
The categories of this paper are: hep-ex
35
The categories of this paper are: mtrl-th
24
The categories of this paper are: dg-ga
0
The categories of this paper are: hep-ph
14
The categories of this paper are: math-ph
19
The categories of this paper are: eess
2
The categories of this paper are: math
18
The categories of this paper are: econ
3
The categories of this paper are: physics
36
The categories of this paper are: cmp-lg
11
The categories of this paper are: hep-lat
37
The categories of this paper are: supr-con
26
The categories of this paper are: bayes-an
7
The categories of this paper are: hep-th