Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Evidence for a long-range component in the pion emission source in Au+Au
  collisions at sqrt(s_NN) = 200 GeV   Emission source functions are extracted from correlation functions
constructed from charged pions produced at mid-rapidity in Au+Au collisions at
sqrt(s_NN)=200 GeV. The source parameters extracted from these functions at low
k_T, give first indications of a long tail for the pion emission source. The
source extension cannot be explained solely by simple kinematic considerations.
The possible role of a halo of secondary pions from resonance emissions is
explored.

6
The categories of this paper are: astro-ph
35
The categories of this paper are: mtrl-th
30
The categories of this paper are: q-alg
36
The categories of this paper are: cmp-lg
37
The categories of this paper are: supr-con
33
The categories of this paper are: plasm-ph
3
The categories of this paper are: physics
2
The categories of this paper are: math
23
The categories of this paper are: solv-int
14
The categories of this paper are: math-ph
22
The categories of this paper are: chao-dyn
16
The categories of this paper are: stat
31
The categories of this paper are: ao-sci
34
The categories of this paper are: chem-ph
27
The categories of this paper are: comp-gas
8
The categories of this paper are: hep-ex