Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spin Dependence of Heavy Quark Fragmentation   We propose that the non-perturbative fragmentation functions describing the
transition from a heavy quark to a heavy meson is proportional to the square of
the produced meson wave function at the origin. We analyze the effects of this
proposal on the number of pseudoscalar mesons compared to the number of vector
mesons produced and find a good agreement with experimental data. Finally, we
discuss further experimental checks for our hypothesis.

37
The categories of this paper are: supr-con
20
The categories of this paper are: acc-phys
6
The categories of this paper are: astro-ph
1
The categories of this paper are: cs
22
The categories of this paper are: chao-dyn
24
The categories of this paper are: dg-ga
25
The categories of this paper are: patt-sol
7
The categories of this paper are: hep-th
27
The categories of this paper are: comp-gas
15
The categories of this paper are: nucl-ex
14
The categories of this paper are: math-ph
2
The categories of this paper are: math
34
The categories of this paper are: chem-ph
16
The categories of this paper are: stat
32
The categories of this paper are: atom-ph
4
The categories of this paper are: cond-mat