Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Exclusive hadronic $\tau$ decays, within $\&$ beyond the Standard Model   Semileptonic exclusive tau decays in the Standard Model are reviewed. As it
is well-known, they are a privileged arena to learn about low-energy
hadronization. They also allow for a number of clean new physics tests, which
have attracted much attention recently, probing scales as high as a few TeV. In
light of forthcoming Belle-II data, perspectives on this area are bright.

5
The categories of this paper are: gr-qc
20
The categories of this paper are: acc-phys
7
The categories of this paper are: hep-th
17
The categories of this paper are: q-fin
34
The categories of this paper are: chem-ph
29
The categories of this paper are: funct-an
4
The categories of this paper are: cond-mat
30
The categories of this paper are: q-alg
3
The categories of this paper are: physics
36
The categories of this paper are: cmp-lg
14
The categories of this paper are: math-ph
2
The categories of this paper are: math
33
The categories of this paper are: plasm-ph
9
The categories of this paper are: nlin
35
The categories of this paper are: mtrl-th
31
The categories of this paper are: ao-sci