Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Would unitarity slow down the rise of $F_2(x,Q^2)$ at $x\to 0$?   On the grounds of the $U$--matrix form of $s$--channel unitarization, we
consider constraints unitarity provides for the total cross--section of the
virtual photon--induced reactions and discuss the preasymptotic nature of
hadron and photon scatterings at $\sqrt{s}\leq 0.5$ TeV.

34
The categories of this paper are: chem-ph
20
The categories of this paper are: acc-phys
23
The categories of this paper are: solv-int
29
The categories of this paper are: funct-an
3
The categories of this paper are: physics
18
The categories of this paper are: econ
25
The categories of this paper are: patt-sol
36
The categories of this paper are: cmp-lg
19
The categories of this paper are: eess
31
The categories of this paper are: ao-sci
2
The categories of this paper are: math
1
The categories of this paper are: cs
10
The categories of this paper are: q-bio
13
The categories of this paper are: quant-ph
12
The categories of this paper are: nucl-th
4
The categories of this paper are: cond-mat