Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Hidden and open heavy-flavor hadronic states   We discuss the stability of hidden and open heavy-flavor hadronic states made
of either two or three mesons. References are made in passing to studies
regarding two and three-body systems containing baryons. We perform a
comparative study analyzing the results in terms of quark and hadron degrees of
freedom. Compact and molecular states are found to exist in very specific
situations. We estimate the decay width for the different scenarios: weak
decays for bound states by the strong interaction, and strong decays for
hadronic resonances above a decay threshold. The experimental observation of
narrow hadrons lying well above their lowest decay threshold is theoretically
justified.

21
The categories of this paper are: adap-org
29
The categories of this paper are: funct-an
9
The categories of this paper are: nlin
35
The categories of this paper are: mtrl-th
3
The categories of this paper are: physics
8
The categories of this paper are: hep-ex
27
The categories of this paper are: comp-gas
17
The categories of this paper are: q-fin
28
The categories of this paper are: alg-geom
25
The categories of this paper are: patt-sol
15
The categories of this paper are: nucl-ex
10
The categories of this paper are: q-bio
33
The categories of this paper are: plasm-ph
34
The categories of this paper are: chem-ph
23
The categories of this paper are: solv-int
16
The categories of this paper are: stat