Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Charge asymmetry in $\bm{\gamma\gamma \to \mu^+\mu^- + neutrinos}$ with
  polarized photons   The difference in distributions of $\mu^+$ and $\mu^-$ in reactions $\gamma
\gamma \to \mu^+\mu^-+\nu\bar\nu$ and $\gamma \gamma \to W^\pm\mu^\mp
+\nu(\bar\nu)$ with polarized photons at $\sqrt{s}>200$ GeV is a large
observable effect which is sensitive to New Physics phenomena.

19
The categories of this paper are: eess
34
The categories of this paper are: chem-ph
30
The categories of this paper are: q-alg
23
The categories of this paper are: solv-int
31
The categories of this paper are: ao-sci
32
The categories of this paper are: atom-ph
27
The categories of this paper are: comp-gas
37
The categories of this paper are: supr-con
9
The categories of this paper are: nlin
1
The categories of this paper are: cs
8
The categories of this paper are: hep-ex
36
The categories of this paper are: cmp-lg
20
The categories of this paper are: acc-phys
2
The categories of this paper are: math
10
The categories of this paper are: q-bio
17
The categories of this paper are: q-fin