Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Higgsphobic and fermiophobic Z' as a single dark matter candidate   A spin-1 Z' particle as a single dark matter candidate is investigated by
assuming that it does not directly couple to the Higgs boson and standard model
fermions and does not mix with the photon and Z boson. The remaining dominant
vertices are quartic Z'Z'ZZ and Z'Z'W+W-, which can induce effective
Z'Z'q\bar{q} couplings through standard-model gauge-boson loops. We discuss
constraints from the cosmological thermal relic density, and direct and
indirect-detection experiments, and find that a dark Z' can only exist above
the W boson mass threshold, and the effective quartic coupling of Z'Z'VV is
bounded in the region of 10^{-3}~10^{-2}.

7
The categories of this paper are: hep-th
16
The categories of this paper are: stat
18
The categories of this paper are: econ
19
The categories of this paper are: eess
23
The categories of this paper are: solv-int
36
The categories of this paper are: cmp-lg
21
The categories of this paper are: adap-org
11
The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg
24
The categories of this paper are: dg-ga
28
The categories of this paper are: alg-geom
15
The categories of this paper are: nucl-ex
33
The categories of this paper are: plasm-ph
35
The categories of this paper are: mtrl-th
1
The categories of this paper are: cs
31
The categories of this paper are: ao-sci