Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: First Measurements of Spin-Dependent Double-Differential Cross Sections
  and the GDH Integrand from \vec{^3He}(\vec{\gamma},n)pp at Incident Photon
  Energies of 12.8 and 14.7 MeV   The first measurement of the three-body photodisintegration of
longitudinally-polarized ^3He with a circularly-polarized \gamma-ray beam was
carried out at the High Intensity \gamma-ray Source (HI\gamma S) facility
located at Triangle Universities Nuclear Laboratory (TUNL). The spin-dependent
double-differential cross sections and the contributions from the three-body
photodisintegration to the ^3He GDH integrand are presented and compared with
state-of-the-art three-body calculations at the incident photon energies of
12.8 and 14.7 MeV. The data reveal the importance of including the Coulomb
interaction between protons in three-body calculations.

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The categories of this paper are: quant-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: q-bio
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The categories of this paper are: hep-ex
31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th
27
The categories of this paper are: comp-gas
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The categories of this paper are: hep-lat
34
The categories of this paper are: chem-ph
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The categories of this paper are: nlin
36
The categories of this paper are: cmp-lg
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The categories of this paper are: solv-int
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The categories of this paper are: adap-org
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The categories of this paper are: eess
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The categories of this paper are: physics
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The categories of this paper are: nucl-th