Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Centrality dependence of high $p_T$ suppression in Au+Au collisions
  suggest quark matter formation   In a pQCD-based model, we have analyzed the STAR data on the high $p_T$
suppression of charged hadrons, in Au+Au collisions at $\sqrt{s}$=200 GeV. In
the jet quenching or the energy loss picture, $p_T$ spectra of charged hadrons
as well as the $p_T$ dependence of nuclear modification factor, in all the
centrality ranges, are well explained, with nearly a constant relative energy
loss, $\Delta E/E=0.56\pm 0.03$. Centrality independence of relative energy
loss indicate that the matter produced in central and in peripheral collisions
are different, otherwise relative energy loss would have shown strong
centrality dependence. Qualitatively, centrality independence of relative
energy loss can be understood, if in central Au+Au collisions deconfined matter
is produced and the matter remain confined in peripheral collisions.

15
The categories of this paper are: nucl-ex
1
The categories of this paper are: cs
10
The categories of this paper are: q-bio
34
The categories of this paper are: chem-ph
3
The categories of this paper are: physics
5
The categories of this paper are: gr-qc
31
The categories of this paper are: ao-sci
21
The categories of this paper are: adap-org
6
The categories of this paper are: astro-ph
13
The categories of this paper are: quant-ph
0
The categories of this paper are: hep-ph
16
The categories of this paper are: stat
27
The categories of this paper are: comp-gas
20
The categories of this paper are: acc-phys
26
The categories of this paper are: bayes-an
23
The categories of this paper are: solv-int