Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Extended Higgs-portal dark matter and the Fermi-LAT Galactic Center
  Excess   We show that the Galactic Center Excess (GCE) emission, as recently updated
by the Fermi-LAT Collaboration, could be explained by the sum of
Fermi-bubbles-like emission plus dark matter (DM) annihilation, in the context
of a scalar-singlet Higgs portal scenario (SHP). In fact, the standard SHP,
where the DM particle, $S$, only has renormalizable interactions with the
Higgs, is non-operational due to strong constraints, specially from DM direct
detection limits. Thus we consider a most economical extension, called ESHP
(for extended SHP), which simply consists in the addition of a second (heavier)
scalar singlet in the dark sector. The second scalar can be integrated-out,
leaving a standard SHP plus a dimension-6 operator. Essentially, this model has
only two relevant parameters (the DM mass and the coupling of the dim-6
operator). DM annihilation occurs mainly into two Higgs bosons, $SS\rightarrow
hh$. We demonstrate that, despite its economy, the ESHP model provides
excellent fits to the GCE (with p-value $\sim 0.6-0.7$) for very reasonable
values of the parameters, in particular $m_S \simeq 130$ GeV. This is achieved
without conflicting with other observables and keeping the $S-$particle relic
density at the accepted value for the DM content in the universe.

15
The categories of this paper are: nucl-ex
33
The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg
10
The categories of this paper are: q-bio
27
The categories of this paper are: comp-gas
29
The categories of this paper are: funct-an
1
The categories of this paper are: cs
3
The categories of this paper are: physics
21
The categories of this paper are: adap-org
25
The categories of this paper are: patt-sol
18
The categories of this paper are: econ
2
The categories of this paper are: math
20
The categories of this paper are: acc-phys
8
The categories of this paper are: hep-ex
12
The categories of this paper are: nucl-th
22
The categories of this paper are: chao-dyn