Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: New results in open charm spectroscopy through an effective Lagrangian
  approach   An effective Lagrangian approach based on the heavy quark and chiral symmetry
is introduced to analyse the spectroscopy of open charm mesons. Strong two-body
decay widths and ratios of branching fractions are computed, and this piece of
information is used to assign quantum numbers to recently observed charmed
states which still need to be properly classified.

6
The categories of this paper are: astro-ph
20
The categories of this paper are: acc-phys
34
The categories of this paper are: chem-ph
32
The categories of this paper are: atom-ph
19
The categories of this paper are: eess
14
The categories of this paper are: math-ph
17
The categories of this paper are: q-fin
15
The categories of this paper are: nucl-ex
9
The categories of this paper are: nlin
37
The categories of this paper are: supr-con
3
The categories of this paper are: physics
35
The categories of this paper are: mtrl-th
13
The categories of this paper are: quant-ph
23
The categories of this paper are: solv-int
26
The categories of this paper are: bayes-an
22
The categories of this paper are: chao-dyn