Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The crucial problem: the electroweak symmetry breaking   1. Why we do Believe in the Standard Model
  2. Why we do not Believe in the Standard Model
  2.1 Conceptual Problems
  2.2 Hints from Experiment
  2.2.1 Unification of Couplings
  2.2.2 Dark Matter
  2.2.3 Neutrino Masses
  2.2.4 Baryogenesis
  3. Status of the Search for the Higgs and for New Physics
  4. Conclusion

5
The categories of this paper are: gr-qc
33
The categories of this paper are: plasm-ph
11
The categories of this paper are: hep-lat
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
27
The categories of this paper are: comp-gas
4
The categories of this paper are: cond-mat
8
The categories of this paper are: hep-ex
32
The categories of this paper are: atom-ph
36
The categories of this paper are: cmp-lg
24
The categories of this paper are: dg-ga
13
The categories of this paper are: quant-ph
25
The categories of this paper are: patt-sol
17
The categories of this paper are: q-fin
9
The categories of this paper are: nlin
15
The categories of this paper are: nucl-ex