Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Electron elastic scattering off endohedral fullerenes A@C60: The initial
  insight   The initial insight into electron elastic scattering off endohedral
fullerenes A@C60 is gained in the framework of a theoretical approach where the
C60 cage is modelled by a rectangular (in the radial coordinate) potential
well, as in many other A@C60 studies. The effect of a noticeably weaker
electron elastic scattering off A@C60 compared to that off empty C60 or even
the isolated atom A itself, as well as a strong sensitivity of e + A@C60
scattering to the spin of the captured atom A are unraveled, for certain kinds
of atoms. Obtained results lay out the initial qualitative basis for
identifying interesting measurements and/or more rigorous calculations of e +
A@C60 elastic scattering to perform.

8
The categories of this paper are: hep-ex
29
The categories of this paper are: funct-an
20
The categories of this paper are: acc-phys
28
The categories of this paper are: alg-geom
35
The categories of this paper are: mtrl-th
5
The categories of this paper are: gr-qc
21
The categories of this paper are: adap-org
31
The categories of this paper are: ao-sci
17
The categories of this paper are: q-fin
16
The categories of this paper are: stat
1
The categories of this paper are: cs
0
The categories of this paper are: hep-ph
36
The categories of this paper are: cmp-lg
7
The categories of this paper are: hep-th
27
The categories of this paper are: comp-gas
13
The categories of this paper are: quant-ph