Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Anomalies in $b \to s$ transitions and dark matter   Since 2013, the LHCb collaboration has reported on the measurement of several
observables associated to $b \to s$ transitions, finding various deviations
from their predicted values in the Standard Model. These include a set of
deviations in branching ratios and angular observables, as well as in the
observables $R_K$ and $R_{K^\ast}$, specially built to test the possible
violation of Lepton Flavor Universality. Even though these tantalizing hints
are not conclusive yet, the $b \to s$ anomalies have gained considerable
attention in the flavor community. Here we review New Physics models that
address these anomalies and explore their possible connection to the dark
matter of the Universe. After discussing some of the ideas introduced in these
works and classifying the proposed models, two selected examples are presented
in detail in order to illustrate the potential interplay between these two
areas of current particle physics.

34
The categories of this paper are: chem-ph
22
The categories of this paper are: chao-dyn
5
The categories of this paper are: gr-qc
20
The categories of this paper are: acc-phys
1
The categories of this paper are: cs
21
The categories of this paper are: adap-org
23
The categories of this paper are: solv-int
11
The categories of this paper are: hep-lat
28
The categories of this paper are: alg-geom
14
The categories of this paper are: math-ph
3
The categories of this paper are: physics
36
The categories of this paper are: cmp-lg
4
The categories of this paper are: cond-mat
24
The categories of this paper are: dg-ga
15
The categories of this paper are: nucl-ex
33
The categories of this paper are: plasm-ph