Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Combined dark matter searches towards dwarf spheroidal galaxies with
  Fermi-LAT, HAWC, H.E.S.S., MAGIC, and VERITAS   Cosmological and astrophysical observations suggest that 85\% of the total
matter of the Universe is made of Dark Matter (DM). However, its nature remains
one of the most challenging and fundamental open questions of particle physics.
Assuming particle DM, this exotic form of matter cannot consist of Standard
Model (SM) particles. Many models have been developed to attempt unraveling the
nature of DM such as Weakly Interacting Massive Particles (WIMPs), the most
favored particle candidates. WIMP annihilations and decay could produce SM
particles which in turn hadronize and decay to give SM secondaries such as high
energy $\gamma$ rays. In the framework of indirect DM search, observations of
promising targets are used to search for signatures of DM annihilation. Among
these, the dwarf spheroidal galaxies (dSphs) are commonly favored owing to
their expected high DM content and negligible astrophysical background. In this
work, we present the very first combination of 20 dSph observations, performed
by the Fermi-LAT, HAWC, H.E.S.S., MAGIC, and VERITAS collaborations in order to
maximize the sensitivity of DM searches and improve the current results. We use
a joint maximum likelihood approach combining each experiment's individual
analysis to derive more constraining upper limits on the WIMP DM
self-annihilation cross-section as a function of DM particle mass. We present
new DM constraints over the widest mass range ever reported, extending from 5
GeV to 100 TeV thanks to the combination of these five different $\gamma$-ray
instruments.

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The categories of this paper are: funct-an
2
The categories of this paper are: math
12
The categories of this paper are: nucl-th
15
The categories of this paper are: nucl-ex
9
The categories of this paper are: nlin
16
The categories of this paper are: stat
24
The categories of this paper are: dg-ga
25
The categories of this paper are: patt-sol
17
The categories of this paper are: q-fin
30
The categories of this paper are: q-alg
3
The categories of this paper are: physics
26
The categories of this paper are: bayes-an
28
The categories of this paper are: alg-geom
33
The categories of this paper are: plasm-ph
10
The categories of this paper are: q-bio
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The categories of this paper are: supr-con