Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Stable Tetraquarks   For very heavy quarks, relations derived from heavy-quark symmetry imply
novel narrow doubly heavy tetraquark states containing two heavy quarks and two
light antiquarks. We predict that double-beauty states will be stable against
strong decays, whereas the double-charm states and mixed beauty+charm states
will dissociate into pairs of heavy-light mesons. Observing a new double-beauty
state through its weak decays would establish the existence of tetraquarks and
illuminate the role of heavy color-antitriplet diquarks as hadron constituents.

10
The categories of this paper are: q-bio
29
The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol
31
The categories of this paper are: ao-sci
18
The categories of this paper are: econ
6
The categories of this paper are: astro-ph
23
The categories of this paper are: solv-int
17
The categories of this paper are: q-fin
30
The categories of this paper are: q-alg
36
The categories of this paper are: cmp-lg
4
The categories of this paper are: cond-mat
12
The categories of this paper are: nucl-th
34
The categories of this paper are: chem-ph
5
The categories of this paper are: gr-qc
21
The categories of this paper are: adap-org
37
The categories of this paper are: supr-con