Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Structure function evolution at next-to-leading order and beyond   Results are presented of two studies addressing the scaling violations of
deep-inelastic structure functions. Factorization-scheme independent fits to
all ep and mu p data on F_2 are performed at next-to-leading order (NLO),
yielding alpha_s(M_Z) = 0.114 +- 0.002_exp (+0.006-0.004)_th . In order to
reduce the theoretical error dominated by the renormalization-scale dependence,
the next-higher order (NNLO) needs to be included. For the flavour non-singlet
sector, it is shown that available calculations provide sufficient information
for this purpose at x > 10^-2.

19
The categories of this paper are: eess
21
The categories of this paper are: adap-org
12
The categories of this paper are: nucl-th
18
The categories of this paper are: econ
36
The categories of this paper are: cmp-lg
6
The categories of this paper are: astro-ph
5
The categories of this paper are: gr-qc
28
The categories of this paper are: alg-geom
10
The categories of this paper are: q-bio
16
The categories of this paper are: stat
24
The categories of this paper are: dg-ga
32
The categories of this paper are: atom-ph
1
The categories of this paper are: cs
9
The categories of this paper are: nlin
4
The categories of this paper are: cond-mat
29
The categories of this paper are: funct-an