Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Future of Hard and Electromagnetic Probes at RHIC   Potential near- and long-term physics opportunities with jets, heavy flavors
and electromagnetic probes at the Relativistic Heavy Ion Collider (RHIC) are
presented. Much new physics remains to be unveiled using these probes, due to
their sensitivity to the initial high density stage of RHIC collisions, when
quark-gluon plasma (QGP) formation is expected. Additional physics will include
addressing deconfinement, chiral symmetry restoration, properties of the
strongly-coupled QGP and a possible weakly-interacting QGP, color glass
condensate in the initial state, and hadronization. To fully realize the
physics prospects of the RHIC energy regime, new detector components must be
added to existing experiments, the RHIC machine luminosity upgraded, and a
possible new detector with significantly extended coverage and capabilities
added.

5
The categories of this paper are: gr-qc
36
The categories of this paper are: cmp-lg
23
The categories of this paper are: solv-int
28
The categories of this paper are: alg-geom
24
The categories of this paper are: dg-ga
12
The categories of this paper are: nucl-th
26
The categories of this paper are: bayes-an
30
The categories of this paper are: q-alg
17
The categories of this paper are: q-fin
11
The categories of this paper are: hep-lat
19
The categories of this paper are: eess
20
The categories of this paper are: acc-phys
22
The categories of this paper are: chao-dyn
21
The categories of this paper are: adap-org
8
The categories of this paper are: hep-ex
10
The categories of this paper are: q-bio