Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Phenomenology of nonperturbative charm in the nucleon   We perform a comprehensive analysis of the role of nonperturbative (or
intrinsic) charm in the nucleon, generated through Fock state expansions of the
nucleon wave function involving five-quark virtual states represented by
charmed mesons and baryons. We consider contributions from a variety of charmed
meson-baryon states and find surprisingly dominant effects from the (Dbar^{*0}
Lambda_c+) configuration. Particular attention is paid to the existence and
persistence of high-x structure for intrinsic charm, and the x dependence of
the c-cbar asymmetry predicted in meson-baryon models. We discuss how studies
of charmed baryons and mesons in hadronic reactions can be used to constrain
models, and outline future measurements that could further illuminate the
intrinsic charm component of the nucleon.

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The categories of this paper are: nlin
29
The categories of this paper are: funct-an
28
The categories of this paper are: alg-geom
35
The categories of this paper are: mtrl-th
13
The categories of this paper are: quant-ph
7
The categories of this paper are: hep-th
17
The categories of this paper are: q-fin
32
The categories of this paper are: atom-ph
30
The categories of this paper are: q-alg
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The categories of this paper are: hep-lat
1
The categories of this paper are: cs
27
The categories of this paper are: comp-gas
2
The categories of this paper are: math
37
The categories of this paper are: supr-con
21
The categories of this paper are: adap-org
36
The categories of this paper are: cmp-lg