Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Lepton Flavour Violation and B_s Leptonic Final States at the LHC   An overview of ATLAS and CMS studies of B_s leptonic decays providing
constraints on the lepton flavour violation phenomenon is presented. Except
direct lepton flavour violating final states B_s -> l_1^+ l_2^-, constraints
can also be set by a measurement of B_s -> mu^+ mu^- decay, whose branching
ratio in some theoretical models correlates with a branching ratio of B_s ->
l_1^+ l_2^-, tau -> 3mu and some other lepton flavour violating decays. In this
paper, the feasibility of measurements of B_s -> mu^+ mu^- decay is described,
including the present status, the trigger and the offline analysis strategies
and the expected reach in the branching ratio measurement. The ATLAS and CMS
experiments foresee to provide 3-sigma evidence of Standard Model B_s -> mu^+
mu^- branching ratio by the end of LHC low-luminosity stage (30 fb^(-1)). Also
a CMS study of the tau -> 3mu decay and an initial particle-level based study
of the B_s -> tau mu decay are presented. A sensitivity of ~10^(-8) for the tau
-> 3mu branching ratio measurement is predicted by CMS.

13
The categories of this paper are: quant-ph
0
The categories of this paper are: hep-ph
30
The categories of this paper are: q-alg
18
The categories of this paper are: econ
12
The categories of this paper are: nucl-th
15
The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg
29
The categories of this paper are: funct-an
17
The categories of this paper are: q-fin
1
The categories of this paper are: cs
19
The categories of this paper are: eess
26
The categories of this paper are: bayes-an
2
The categories of this paper are: math
27
The categories of this paper are: comp-gas
35
The categories of this paper are: mtrl-th
14
The categories of this paper are: math-ph