Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Characterizing Higgs portal dark matter models at the ILC   We study the Dark Matter (DM) discovery prospect and its spin discrimination
in the theoretical framework of gauge invariant and renormalizable Higgs portal
DM models at the ILC with $\sqrt{s} = 500$ GeV. In such models, the DM pair is
produced in association with a $Z$ boson. In case the singlet scalar DM, the
mediator is just the SM Higgs boson, whereas for the fermion or vector DM there
is an additional singlet scalar mediator that mixes with the SM Higgs boson,
which produces significant observable differences. After careful investigation
of the signal and backgrounds both at parton level and at detector level, we
find the signal with hadronically decaying $Z$ boson provides a better search
sensitivity than the signal with leptonically decaying $Z$ boson. Taking the
fermion DM model as a benchmark scenario, when the DM-mediator coupling
$g_\chi$ is relatively small, the DM signals are discoverable only for
benchmark points with relatively light scalar mediator $H_2$. And the spin
discriminating from scalar DM is always promising while it is difficult to
discriminate from vector DM. As for $g_\chi$ approaching the perturbative
limit, benchmark points with the mediator $H_2$ in the full mass region of
interest are discoverable. And the spin discriminating from both the scalar and
fermion DM are quite promising.

13
The categories of this paper are: quant-ph
35
The categories of this paper are: mtrl-th
10
The categories of this paper are: q-bio
32
The categories of this paper are: atom-ph
1
The categories of this paper are: cs
4
The categories of this paper are: cond-mat
27
The categories of this paper are: comp-gas
26
The categories of this paper are: bayes-an
28
The categories of this paper are: alg-geom
23
The categories of this paper are: solv-int
34
The categories of this paper are: chem-ph
18
The categories of this paper are: econ
17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
22
The categories of this paper are: chao-dyn
15
The categories of this paper are: nucl-ex