Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Determination of the forward Compton scattering amplitudes for C and Pb   The forward Compton scattering amplitude for carbon and lead have been
calculated from total photoabsorption cross section data by using dispersion
relations. The results show a large difference between the scattering
amplitudes for nuclei and the free nucleon, above the $\Delta $ region. The
forward Compton scattering cross sections have been calculated and compared
with the available data. The Weise sum rule is discussed together with the
prediction of a recent theoretical model.

2
The categories of this paper are: math
24
The categories of this paper are: dg-ga
0
The categories of this paper are: hep-ph
15
The categories of this paper are: nucl-ex
10
The categories of this paper are: q-bio
23
The categories of this paper are: solv-int
7
The categories of this paper are: hep-th
25
The categories of this paper are: patt-sol
34
The categories of this paper are: chem-ph
14
The categories of this paper are: math-ph
36
The categories of this paper are: cmp-lg
5
The categories of this paper are: gr-qc
19
The categories of this paper are: eess
18
The categories of this paper are: econ
11
The categories of this paper are: hep-lat
22
The categories of this paper are: chao-dyn