Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: NLO BFKL tests using the proton structure function $F_2$ measured at
  HERA   We propose a phenomenological study of the next-to-leading
Balitsky-Fadin-Kuraev-Lipatov (BFKL) approach applied to the data on the proton
structure function $F_2$ measured at HERA in the small-$x_{Bj}$ region.

20
The categories of this paper are: acc-phys
8
The categories of this paper are: hep-ex
31
The categories of this paper are: ao-sci
14
The categories of this paper are: math-ph
16
The categories of this paper are: stat
11
The categories of this paper are: hep-lat
23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph
36
The categories of this paper are: cmp-lg
3
The categories of this paper are: physics
25
The categories of this paper are: patt-sol
35
The categories of this paper are: mtrl-th
22
The categories of this paper are: chao-dyn
6
The categories of this paper are: astro-ph
24
The categories of this paper are: dg-ga
1
The categories of this paper are: cs