Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Absolute Branching Fraction Measurements of Exclusive D^0 Semileptonic
  Decays   With the first data sample collected by the CLEO-c detector at the psi(3770)
resonance we have studied four exclusive semileptonic decays of the D0 meson.
Our results include the first observation and absolute branching fraction
measurement for D0 --> rho- e+ nu_e and improved measurements of the absolute
branching fractions for D0 decays to K- e+ nu_e, pi- e+ nu_e, and K*- e+ nu_e.

36
The categories of this paper are: cmp-lg
5
The categories of this paper are: gr-qc
24
The categories of this paper are: dg-ga
28
The categories of this paper are: alg-geom
20
The categories of this paper are: acc-phys
13
The categories of this paper are: quant-ph
0
The categories of this paper are: hep-ph
10
The categories of this paper are: q-bio
11
The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg
4
The categories of this paper are: cond-mat
25
The categories of this paper are: patt-sol
2
The categories of this paper are: math
22
The categories of this paper are: chao-dyn
37
The categories of this paper are: supr-con
14
The categories of this paper are: math-ph