Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Isospin-symmetry-breaking corrections to superallowed Fermi beta decay:
  Formalism and schematic models   We study the formalism to include isospin-symmetry-breaking corrections when
extracting the up-down Cabibbo-Kobayashi-Maskawa matrix element from
superallowed 0+ -> 0+ nuclear beta decay. We show that there are no first order
isospin-symmetry-breaking corrections to the relevant nuclear matrix elements.
We find corrections to the treatment of Towner and Hardy, and assess these
using schematic models of increasing complexity.

31
The categories of this paper are: ao-sci
9
The categories of this paper are: nlin
17
The categories of this paper are: q-fin
32
The categories of this paper are: atom-ph
30
The categories of this paper are: q-alg
27
The categories of this paper are: comp-gas
8
The categories of this paper are: hep-ex
23
The categories of this paper are: solv-int
11
The categories of this paper are: hep-lat
35
The categories of this paper are: mtrl-th
37
The categories of this paper are: supr-con
10
The categories of this paper are: q-bio
18
The categories of this paper are: econ
2
The categories of this paper are: math
14
The categories of this paper are: math-ph
29
The categories of this paper are: funct-an