Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Form factor relations for heavy-to-heavy and heavy-to-light meson
  transitions   Relations between the form factors that parametrize the hadronic matrix
elements, in spectator decays of heavy mesons, have been derived by Stech
within the constituent quark model. In here, we examine these relations using a
slightly modified description of the meson states. We find new and very general
relations for some of the form factors. For the other form factors, we obtain
small modifications to the relations previously derived by Stech, in the case
of heavy-to-light transitions.

32
The categories of this paper are: atom-ph
6
The categories of this paper are: astro-ph
8
The categories of this paper are: hep-ex
19
The categories of this paper are: eess
33
The categories of this paper are: plasm-ph
18
The categories of this paper are: econ
29
The categories of this paper are: funct-an
3
The categories of this paper are: physics
9
The categories of this paper are: nlin
30
The categories of this paper are: q-alg
28
The categories of this paper are: alg-geom
2
The categories of this paper are: math
14
The categories of this paper are: math-ph
27
The categories of this paper are: comp-gas
16
The categories of this paper are: stat
22
The categories of this paper are: chao-dyn