Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Lepton flavour universality violation from composite muons   We describe a possibility to explain the $2.6\sigma$ deviation from lepton
flavour universality observed by the LHCb collaboration in $B^+\to
K^+\ell^+\ell^-$ decays in the context of minimal composite Higgs models. We
find that a sizable degree of compositeness of partially composite muons can
lead to a good agreement with the experimental data. Our construction predicts
a new physics contribution to $B_s$-$\bar{B}_s$ mixing. Additionally, it
accounts for the deficit in the invisible $Z$ width measured at LEP.

14
The categories of this paper are: math-ph
16
The categories of this paper are: stat
26
The categories of this paper are: bayes-an
15
The categories of this paper are: nucl-ex
1
The categories of this paper are: cs
29
The categories of this paper are: funct-an
10
The categories of this paper are: q-bio
7
The categories of this paper are: hep-th
23
The categories of this paper are: solv-int
4
The categories of this paper are: cond-mat
28
The categories of this paper are: alg-geom
13
The categories of this paper are: quant-ph
27
The categories of this paper are: comp-gas
24
The categories of this paper are: dg-ga
35
The categories of this paper are: mtrl-th
25
The categories of this paper are: patt-sol