Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Parity Nonconservation in the Photodisintegration of the Deuteron at Low
  Energy   The parity-nonconserving asymmetry in the deuteron photodisintegration,
$\vec{\gamma}+d\to n+p$, is considered with the photon energy ranged up to 10
MeV above the threshold. The aim is to improve upon a schematic estimate
assuming the absence of tensor as well as spin-orbit forces in the
nucleon-nucleon interaction. The major contributions are due to the
vector-meson exchanges, and the strong suppression of the pion-exchange
contribution is confirmed. A simple argument, going beyond the observation of
an algebraic cancellation, is presented. Contributions of meson-exchange
currents are also considered, but found to be less significant.

37
The categories of this paper are: supr-con
10
The categories of this paper are: q-bio
31
The categories of this paper are: ao-sci
29
The categories of this paper are: funct-an
22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
0
The categories of this paper are: hep-ph
8
The categories of this paper are: hep-ex
26
The categories of this paper are: bayes-an
15
The categories of this paper are: nucl-ex
35
The categories of this paper are: mtrl-th
28
The categories of this paper are: alg-geom
4
The categories of this paper are: cond-mat
17
The categories of this paper are: q-fin
24
The categories of this paper are: dg-ga
30
The categories of this paper are: q-alg