Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: SIMPs through the axion portal   Dark matter could be a thermal relic comprised of strongly interacting
massive particles (SIMPs), where $3 \rightarrow 2$ interactions set the relic
abundance. Such interactions generically arise in theories of chiral symmetry
breaking via the Wess-Zumino-Witten term. In this work, we show that an
axion-like particle can successfully maintain kinetic equilibrium between the
dark matter and the visible sector, allowing the requisite entropy transfer
that is crucial for SIMPs to be a cold dark matter candidate. Constraints on
this scenario arise from beam dump and collider experiments, from the cosmic
microwave background, and from supernovae. We find a viable parameter space
when the axion-like particle is close in mass to the SIMP dark matter, with
strong-scale masses of order a few hundred MeV. Many planned experiments are
set to probe the parameter space in the near future.

30
The categories of this paper are: q-alg
17
The categories of this paper are: q-fin
29
The categories of this paper are: funct-an
32
The categories of this paper are: atom-ph
3
The categories of this paper are: physics
24
The categories of this paper are: dg-ga
36
The categories of this paper are: cmp-lg
14
The categories of this paper are: math-ph
5
The categories of this paper are: gr-qc
37
The categories of this paper are: supr-con
27
The categories of this paper are: comp-gas
2
The categories of this paper are: math
11
The categories of this paper are: hep-lat
8
The categories of this paper are: hep-ex
18
The categories of this paper are: econ
26
The categories of this paper are: bayes-an