Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Charmed Hadron Production in Polarized pp Collisions   To extract information about polarized gluons in the proton, production of
charmed hadrons, in particular, \Lambda_c^+ baryon in pp collisions was
studied. We calculated the transverse momentum distribution and the
pseudo-rapidity distribution of the spin correlation asymmetry A_{LL} between
the initial proton and the produced \Lambda_c^+. Those statistical
sensitivities were also calculated under the condition of RHIC experiment. We
found that the pseudo-rapidity distribution of A_{LL} is promising for testing
the model of polarized gluons in the proton and also the spin-dependent
fragmentation model of a charm quark decaying into \Lambda_c^+ baryon.

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The categories of this paper are: math
35
The categories of this paper are: mtrl-th
19
The categories of this paper are: eess
37
The categories of this paper are: supr-con
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The categories of this paper are: dg-ga
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The categories of this paper are: hep-th
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The categories of this paper are: alg-geom
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The categories of this paper are: q-alg
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The categories of this paper are: stat
26
The categories of this paper are: bayes-an
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The categories of this paper are: quant-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: cs
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The categories of this paper are: math-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: nucl-ex