Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Remarkable Mass Relations in the Electroweak Model   In the electroweak standard model we observe two remarkable empirical mass
relations, m_W + m_B = v/2 and m_W - m_B = e v/2 where m^2_Z = m^2_W + m^2_B, e
is the positron electric charge and v, the strength of the Higgs condensate.

3
The categories of this paper are: physics
20
The categories of this paper are: acc-phys
5
The categories of this paper are: gr-qc
34
The categories of this paper are: chem-ph
28
The categories of this paper are: alg-geom
37
The categories of this paper are: supr-con
26
The categories of this paper are: bayes-an
16
The categories of this paper are: stat
36
The categories of this paper are: cmp-lg
15
The categories of this paper are: nucl-ex
14
The categories of this paper are: math-ph
32
The categories of this paper are: atom-ph
17
The categories of this paper are: q-fin
2
The categories of this paper are: math
18
The categories of this paper are: econ
12
The categories of this paper are: nucl-th