Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Measurement of cosmic muon charge ratio with the Large Volume Detector   The charge ratio ${k \equiv \mu^+/\mu^-}$ for atmospheric muons has been
measured using Large Volume Detector (LVD) in the INFN Gran Sasso National
Laboratory, Italy (minimal depth is 3000 m w.e.). To reach this depth muons
should have the energy at the sea level greater than 1.3 TeV. The muon charge
ratio was defined using the number of the decays of stopping positive muons in
the LVD iron structure and the decays of positive and negative muons in
scintillator. We have obtained the value of the muon charge ratio ${k}$ ${=
1.26 \pm 0.04(stat) \pm 0.11(sys)}$.

24
The categories of this paper are: dg-ga
2
The categories of this paper are: math
7
The categories of this paper are: hep-th
36
The categories of this paper are: cmp-lg
37
The categories of this paper are: supr-con
28
The categories of this paper are: alg-geom
34
The categories of this paper are: chem-ph
16
The categories of this paper are: stat
1
The categories of this paper are: cs
22
The categories of this paper are: chao-dyn
32
The categories of this paper are: atom-ph
18
The categories of this paper are: econ
35
The categories of this paper are: mtrl-th
11
The categories of this paper are: hep-lat
31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas