Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dark matter contribution to $b\to s \mu^+ \mu^-$ anomaly in local
  $U(1)_{L_\mu-L_\tau}$ model   We propose a local $U(1)_{L_\mu-L_\tau}$ model to explain $b \to s \mu^+
\mu^-$ anomaly observed at the LHCb
  and Belle experiments. The model also has a natural dark matter candidate
$N$. We introduce $SU(2)_L$-doublet colored scalar $\widetilde{q}$ to mediate
$b \to s$ transition at one-loop level. The $U(1)_{L_\mu-L_\tau}$ gauge
symmetry is broken spontaneously by the scalar $S$. All the new particles are
charged under $U(1)_{L_\mu-L_\tau}$. We can obtain $C_9^{\mu,{\rm NP}} \sim -1$
to solve the $b \to s\mu^+\mu^-$ anomaly and can explain the correct dark
matter relic density of the universe, $\Omega_{\rm DM} h^2 \approx 0.12$,
simultaneously, while evading constraints from electroweak precision tests,
neutrino trident experiments and other quark flavor-changing loop processes
such as $b \to s \gamma$ and $B_s-\overline{B}_s$ mixing. Our model can be
tested by searching for $Z'$ and new colored scalar at the LHC and $B \to K^*
\nu \overline{\nu}$ process at Belle-II.

1
The categories of this paper are: cs
20
The categories of this paper are: acc-phys
29
The categories of this paper are: funct-an
4
The categories of this paper are: cond-mat
7
The categories of this paper are: hep-th
6
The categories of this paper are: astro-ph
23
The categories of this paper are: solv-int
2
The categories of this paper are: math
17
The categories of this paper are: q-fin
22
The categories of this paper are: chao-dyn
15
The categories of this paper are: nucl-ex
8
The categories of this paper are: hep-ex
3
The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
16
The categories of this paper are: stat
28
The categories of this paper are: alg-geom