Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Accidental scale-invariant Majorana dark matter in leptoquark-Higgs
  portals   We study a classically accidental scale-invariant extension of the Standard
Model (SM) containing three additional fields, a vector leptoquark ($ V_{\mu}
$), a real scalar ($ \phi $), and a neutral Majorana fermion ($ \chi $) as a
dark matter (DM) candidate. The scalar $ \phi $ (scalon) and Majorana fermion $
\chi $ are both singlets under the SM gauge group, while $ V_{\mu} $ has
(\textbf{3}, \textbf{1}, 2/3) quantum numbers under the $ SU(3)_{c} \times
SU(2)_{L} \times U(1)_{Y} $. The Majorana DM couples to the SM sector via both
Higgs and leptoquark portals. We perform a scan over the independent parameters
to determine the viable parameter space consistent with the Planck data for DM
relic density, and with the PandaX-II and LUX direct detection limits for the
spin-independent (SI) and spin-dependent (SD) DM-nucleon cross section. The
model generally evades indirect detection constraints while being consistent
with collider data.

31
The categories of this paper are: ao-sci
23
The categories of this paper are: solv-int
6
The categories of this paper are: astro-ph
34
The categories of this paper are: chem-ph
29
The categories of this paper are: funct-an
12
The categories of this paper are: nucl-th
37
The categories of this paper are: supr-con
26
The categories of this paper are: bayes-an
8
The categories of this paper are: hep-ex
19
The categories of this paper are: eess
11
The categories of this paper are: hep-lat
4
The categories of this paper are: cond-mat
25
The categories of this paper are: patt-sol
5
The categories of this paper are: gr-qc
32
The categories of this paper are: atom-ph
15
The categories of this paper are: nucl-ex