Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A simplified recursive ${}^3P_0$ model for the fragmentation of
  polarized quarks   We revisit our recursive model for the fragmentation of polarized quarks
based on the string+${}^3P_0$ mechanism of $q\bar{q}$ pair creation. We make a
different choice for one input function of the model that simplifies the
implementation in a Monte Carlo program. No new parameters are introduced, and
the relevant results are the same apart from the suppression of the
spin-independent correlations between successive quarks. In addition, the
present version is more suitable for an interface with external event
generators. The theoretical aspects and the simulation results obtained with a
stand alone program are discussed in detail and compared with those of the
previous version of the model.

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The categories of this paper are: econ
1
The categories of this paper are: cs
15
The categories of this paper are: nucl-ex
29
The categories of this paper are: funct-an
33
The categories of this paper are: plasm-ph
5
The categories of this paper are: gr-qc
23
The categories of this paper are: solv-int
26
The categories of this paper are: bayes-an
30
The categories of this paper are: q-alg
16
The categories of this paper are: stat
11
The categories of this paper are: hep-lat
19
The categories of this paper are: eess
28
The categories of this paper are: alg-geom
21
The categories of this paper are: adap-org
13
The categories of this paper are: quant-ph
24
The categories of this paper are: dg-ga