Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Determination of \alpha_s from Event Shapes and Power Corrections   The size of non-perturbative corrections to event shape observables is
predicted to fall like a power of the inverse centre of mass energy. These
power corrections are investigated for different observables from
e+e-annihilation and compared to the theoretical predictions. Using the latest
DELPHI high energy data advantages of determining \alpha_s from these
predictions are discussed and compared to conventional methods.

2
The categories of this paper are: math
9
The categories of this paper are: nlin
26
The categories of this paper are: bayes-an
7
The categories of this paper are: hep-th
19
The categories of this paper are: eess
22
The categories of this paper are: chao-dyn
37
The categories of this paper are: supr-con
5
The categories of this paper are: gr-qc
17
The categories of this paper are: q-fin
3
The categories of this paper are: physics
25
The categories of this paper are: patt-sol
36
The categories of this paper are: cmp-lg
31
The categories of this paper are: ao-sci
18
The categories of this paper are: econ
15
The categories of this paper are: nucl-ex
4
The categories of this paper are: cond-mat