Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Production of Charm, Charmonium, and Beauty in 800$\,$GeV Proton-Nucleon
  Collisions   Some recent results from the Fermilab fixed-target experiment E789 on
production of charm, charmonium, and beauty are summarized and compared to
model predictions. The data indicate that heavy-quark and quarkonium production
are not yet entirely understood. The largest discrepancy concerns the rate of
$\psi^\prime$ production, which is a factor $\approx$25 above expectations.

33
The categories of this paper are: plasm-ph
9
The categories of this paper are: nlin
27
The categories of this paper are: comp-gas
17
The categories of this paper are: q-fin
20
The categories of this paper are: acc-phys
7
The categories of this paper are: hep-th
36
The categories of this paper are: cmp-lg
15
The categories of this paper are: nucl-ex
22
The categories of this paper are: chao-dyn
31
The categories of this paper are: ao-sci
14
The categories of this paper are: math-ph
37
The categories of this paper are: supr-con
12
The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol
29
The categories of this paper are: funct-an
10
The categories of this paper are: q-bio