Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Muon decay in orbit spectra for muon-electron conversion experiments   We have determined in detail the electron spectrum in the decay of bound
muons. These results are especially relevant for the upcoming muon-electron
conversion experiments.

19
The categories of this paper are: eess
7
The categories of this paper are: hep-th
20
The categories of this paper are: acc-phys
35
The categories of this paper are: mtrl-th
5
The categories of this paper are: gr-qc
34
The categories of this paper are: chem-ph
12
The categories of this paper are: nucl-th
17
The categories of this paper are: q-fin
32
The categories of this paper are: atom-ph
29
The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol
36
The categories of this paper are: cmp-lg
2
The categories of this paper are: math
31
The categories of this paper are: ao-sci
3
The categories of this paper are: physics
1
The categories of this paper are: cs