Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Proton dominance in the 2^+_2 -> 0^+_1 transition of N = Z\pm 2 nuclei
  around Si-28   E2 transitions in Si-30 are investigated in relation with intrinsic
deformations based on a method of antisymmetrized molecular dynamics. By
comparing E2 transition strengths in the mirror nuclei Si-30 and S-30,
transition matrix amplitudes M_p and M_n for protons and neutrons are discussed
in mirror analysis. Particular attention is paid to the M_n/M_p ratio in the
transition from the 2^+_2 state to the 0^+_1 state. The M_n/M_p ratio in Mg-26
and Si-26 is also investigated. It is found that the proton dominance in the
transition 2^+_2 -> 0^+_1 in Si-30 and Si-26 originates in the oblate trend of
the Z=14 proton structure.

26
The categories of this paper are: bayes-an
8
The categories of this paper are: hep-ex
0
The categories of this paper are: hep-ph
21
The categories of this paper are: adap-org
1
The categories of this paper are: cs
17
The categories of this paper are: q-fin
34
The categories of this paper are: chem-ph
20
The categories of this paper are: acc-phys
30
The categories of this paper are: q-alg
29
The categories of this paper are: funct-an
5
The categories of this paper are: gr-qc
15
The categories of this paper are: nucl-ex
3
The categories of this paper are: physics
27
The categories of this paper are: comp-gas
9
The categories of this paper are: nlin
18
The categories of this paper are: econ