Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Study of Heavy Flavoured Meson Fragmentation Functions in e+ e-
  annihilation   We compare QCD theoretical predictions for heavy flavoured mesons
fragmentation spectra in e+ e- annihilation with data from CLEO, BELLE and LEP.
We include several effects in our calculation: next-to-leading order initial
conditions, evolution and coefficient functions. Soft-gluon effects are
resummed at next-to-leading-log accuracy. A matching condition for the crossing
of the bottom threshold in evolution is also implemented at next-to-leading
order accuracy. Important initial-state electromagnetic radiation effects in
the CLEO and BELLE data are accounted for. We find that, with reasonably simple
choices of a non-perturbative correction to the fixed-order initial condition
for the evolution, the data from CLEO and BELLE can be fitted with remarkable
accuracy. The fitted fragmentation function, when evolved to LEP energies, does
not however represent fairly the D* fragmentation spectrum measured by ALEPH.
Large non-perturbative corrections to the coefficient functions of the meson
spectrum are needed in order to reconcile CLEO/BELLE and ALEPH results.
Non-perturbative parameters extracted from the fits to e+ e- fragmentation data
for D/D* and B mesons are tabulated. They can be employed in the theoretical
predictions for the production of charmed and bottomed mesons in hadron-hadron,
photon-hadron and photon-photon collisions.

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The categories of this paper are: econ
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The categories of this paper are: atom-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: nlin
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The categories of this paper are: eess
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The categories of this paper are: comp-gas
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The categories of this paper are: math-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: astro-ph
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The categories of this paper are: hep-th
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The categories of this paper are: funct-an
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The categories of this paper are: stat
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The categories of this paper are: cs
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The categories of this paper are: nucl-ex
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The categories of this paper are: alg-geom
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The categories of this paper are: chem-ph