Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Pseudo Nambu-Goldstone Dark Matter: Examples of Vanishing Direct
  Detection Cross Section   We consider cases where the dark matter-nucleon interaction is naturally
suppressed. We explicitly show that by extending the standard model scalar
sector by a number of singlets, can lead to a vanishing direct detection cross
section, if some softly broken symmetries are imposed in the dark sector. In
particular, it is shown that if said symmetries are $SU(2)$ ($SU(N)$) and $U(1)
\times S_N$, then the resulting pseudo-Nambu-Goldstone bosons can constitute
the dark matter of the Universe, while naturally explaining the missing signal
in nuclear recoil experiments.

27
The categories of this paper are: comp-gas
2
The categories of this paper are: math
33
The categories of this paper are: plasm-ph
13
The categories of this paper are: quant-ph
15
The categories of this paper are: nucl-ex
1
The categories of this paper are: cs
21
The categories of this paper are: adap-org
20
The categories of this paper are: acc-phys
9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
24
The categories of this paper are: dg-ga
16
The categories of this paper are: stat
30
The categories of this paper are: q-alg
23
The categories of this paper are: solv-int
28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ