Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the production of a lepton pair in the collision of ultrarelativistic
  neutral particle with nonzero magnetic moment with nuclei   Explicit formulas which describe muon pair production in reaction $\gamma\nu
\to \mu^+ \mu^- \nu$ through neutrino magnetic moment are obtained and used to
derive in the leading approximation cross section of muon pair production in
$\nu N$-scattering due to neutrino magnetic moment. This cross section appears
to be proportional to $\log^4 E_{\nu}$. Comparison with experimental data on
tridents production provides an upper bound $\mu_{\nu_{\mu}} < 4*10^{-8}
\mu_B$, which is approximately two orders of magnitude weaker than that from
$\nu_{\mu}e$ elastic scattering data.

10
The categories of this paper are: q-bio
6
The categories of this paper are: astro-ph
11
The categories of this paper are: hep-lat
24
The categories of this paper are: dg-ga
19
The categories of this paper are: eess
7
The categories of this paper are: hep-th
1
The categories of this paper are: cs
13
The categories of this paper are: quant-ph
36
The categories of this paper are: cmp-lg
8
The categories of this paper are: hep-ex
5
The categories of this paper are: gr-qc
18
The categories of this paper are: econ
21
The categories of this paper are: adap-org
12
The categories of this paper are: nucl-th
37
The categories of this paper are: supr-con
25
The categories of this paper are: patt-sol