Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: $\Omega$ and $\phi$ in Au + Au ~collisions at \srt~= 200 and 11.5 GeV
  from a multiphase transport model   Within the framework of a multiphase transport model, we study the production
and properties of $\Omega$ and $\phi$ in Au + Au collisions with a new set of
parameters for $\sqrt{s_{NN}}$ = 200 GeV and with the original set of
parameters for $\sqrt{s_{NN}}$ = 11.5 GeV, respectively. The AMPT model with
the string melting version provides a reasonable description at $\sqrt{s_{NN}}$
= 200 GeV and while the AMPT model with default version describes the data well
at $\sqrt{s_{NN}}$ = 11.5 GeV. It indicates that the system created at top RHIC
energy is dominated by partonic interaction and while the hadronic interaction
becomes important at lower beam energy, such as $\sqrt{s_{NN}}$ = 11.5 GeV. The
comparison of $N(\Omega ^++\Omega^-)/[2N(\phi)]$ ratio between data and
calculations further supports the argument. Our calculations can generally
describe the data of nuclear modification factor as well as elliptic flow.

22
The categories of this paper are: chao-dyn
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
9
The categories of this paper are: nlin
28
The categories of this paper are: alg-geom
36
The categories of this paper are: cmp-lg
6
The categories of this paper are: astro-ph
29
The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol
20
The categories of this paper are: acc-phys
3
The categories of this paper are: physics
26
The categories of this paper are: bayes-an
35
The categories of this paper are: mtrl-th
30
The categories of this paper are: q-alg
11
The categories of this paper are: hep-lat