Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the extraction of non-perturbative effects in the fragmentation
  functions of heavy quarks in e+ e- annihilation   In this talk, we consider the computation of D and B fragmentation functions
in e+e- annihilation. We present an improved differential cross section that
merges together the O(alpha_s^2) fixed-order calculation and the
next-to-leading-logarithmic resummed one. We compare the results of fitting
present data using the next-to-leading-log cross section, the O(alpha_s^2)
fixed-order and the improved one.

6
The categories of this paper are: astro-ph
10
The categories of this paper are: q-bio
8
The categories of this paper are: hep-ex
7
The categories of this paper are: hep-th
28
The categories of this paper are: alg-geom
1
The categories of this paper are: cs
37
The categories of this paper are: supr-con
32
The categories of this paper are: atom-ph
27
The categories of this paper are: comp-gas
34
The categories of this paper are: chem-ph
21
The categories of this paper are: adap-org
17
The categories of this paper are: q-fin
25
The categories of this paper are: patt-sol
11
The categories of this paper are: hep-lat
26
The categories of this paper are: bayes-an
2
The categories of this paper are: math