Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Measurement of the form factors of charged kaon semileptonic decays   A measurement of the form factors of charged kaon semileptonic decays is
presented, based on $4.4 \times 10^6$ $K^\pm \to \pi^0 e^\pm \nu_e$
($K^\pm_{e3}$) and $2.3 \times 10^6$ $K^\pm \to \pi^0 \mu^\pm \nu_{\mu}$
($K^\pm_{\mu3}$) decays collected in 2004 by the NA48/2 experiment. The results
are obtained with improved precision as compared to earlier measurements. The
combination of measurements in the $K^\pm_{e3}$ and $K^\pm_{\mu3}$ modes is
also presented.

1
The categories of this paper are: cs
11
The categories of this paper are: hep-lat
26
The categories of this paper are: bayes-an
17
The categories of this paper are: q-fin
12
The categories of this paper are: nucl-th
32
The categories of this paper are: atom-ph
16
The categories of this paper are: stat
15
The categories of this paper are: nucl-ex
33
The categories of this paper are: plasm-ph
2
The categories of this paper are: math
35
The categories of this paper are: mtrl-th
5
The categories of this paper are: gr-qc
24
The categories of this paper are: dg-ga
0
The categories of this paper are: hep-ph
7
The categories of this paper are: hep-th
31
The categories of this paper are: ao-sci