Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: How to Use Weak Decays in Analyses of Data on Nucleon Spin Structure
  Functions   The use of weak decays to determine proton spin structure is examined in view
of possible violations of the Bjorken and Gottfried Sum rules, flavor symmetry
breaking and flavor asymmetry in the sea. The use of the neutron decay is found
to be unaffected by all these. A method for including these effects in analyses
of hyperon decays shows that a flavor-asymmetric sea produced by SU(3) symmetry
breaking has only a small effect on results for the total spin carried by
quarks. However the strange quark contribution cannot be reliably obtained from
charged lepton scattering and weak decay data alone, and requires additional
model-dependent input relating nucleon and hyperon wave functions.

19
The categories of this paper are: eess
15
The categories of this paper are: nucl-ex
31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th
25
The categories of this paper are: patt-sol
10
The categories of this paper are: q-bio
36
The categories of this paper are: cmp-lg
3
The categories of this paper are: physics
24
The categories of this paper are: dg-ga
20
The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org
32
The categories of this paper are: atom-ph
12
The categories of this paper are: nucl-th
27
The categories of this paper are: comp-gas
23
The categories of this paper are: solv-int
1
The categories of this paper are: cs