Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Insights and puzzles in light quark physics   Recent work in light flavour hadron physics is reviewed. In particular, I
discuss the significance of the progress achieved with light dynamical quarks
on the lattice for the effective low energy theory of QCD. Also, I draw
attention to some puzzling results from NA48 and KTeV concerning the scalar
form factor relevant for Kmu3 decay -- taken at face value, these indicate
physics beyond the Standard Model.

34
The categories of this paper are: chem-ph
9
The categories of this paper are: nlin
10
The categories of this paper are: q-bio
2
The categories of this paper are: math
21
The categories of this paper are: adap-org
3
The categories of this paper are: physics
7
The categories of this paper are: hep-th
5
The categories of this paper are: gr-qc
28
The categories of this paper are: alg-geom
20
The categories of this paper are: acc-phys
31
The categories of this paper are: ao-sci
19
The categories of this paper are: eess
1
The categories of this paper are: cs
27
The categories of this paper are: comp-gas
30
The categories of this paper are: q-alg
6
The categories of this paper are: astro-ph