Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nature of low-lying electric dipole resonance excitations in 74Ge   Isospin properties of dipole excitations in 74 Ge are investigated using the
({\alpha},{\alpha}'{\gamma}) reaction and compared to ({\gamma},{\gamma}) data.
The results indicate that the dipole excitations in the energy region of 6 to 9
MeV adhere to the scenario of the recently found splitting of the region of
dipole excitations into two separated parts: one at low energy, being populated
by both isoscalar and isovector probes, and the other at high energy, excited
only by the electromagnetic probe. Relativistic quasiparticle time blocking
approximation (RQTBA) calculations show a reduction in the isoscalar E1
strength with an increase in excitation energy, which is consistent with the
measurement.

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The categories of this paper are: hep-ex
37
The categories of this paper are: supr-con
18
The categories of this paper are: econ
13
The categories of this paper are: quant-ph
6
The categories of this paper are: astro-ph
0
The categories of this paper are: hep-ph
24
The categories of this paper are: dg-ga
26
The categories of this paper are: bayes-an
33
The categories of this paper are: plasm-ph
16
The categories of this paper are: stat
21
The categories of this paper are: adap-org
5
The categories of this paper are: gr-qc
30
The categories of this paper are: q-alg
3
The categories of this paper are: physics
22
The categories of this paper are: chao-dyn
25
The categories of this paper are: patt-sol