Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: $T_{cc}^+$ decays: Differential spectra and two-body final states   The recently discovered tetraquark, $T_{cc}^+$, has quark content
$cc\bar{u}\bar{d}$ and a mass that lies just below open charm thresholds. Hence
it is reasonable to expect the state to have a significant molecular component.
We calculate the decay of the $T_{cc}^+$ in a molecular interpretation using
effective field theory. In addition we calculate differential spectra as a
function of the invariant mass of the final state charm meson pair. These are
in good agreement with spectra measured by LHCb. We also point out that if
shallow bound states of two pseudoscalar charm mesons exist, then two-body
decays to those bound states and a single pion or photon can significantly
enhance the width of the $T_{cc}^+$.

22
The categories of this paper are: chao-dyn
23
The categories of this paper are: solv-int
32
The categories of this paper are: atom-ph
21
The categories of this paper are: adap-org
18
The categories of this paper are: econ
20
The categories of this paper are: acc-phys
19
The categories of this paper are: eess
13
The categories of this paper are: quant-ph
15
The categories of this paper are: nucl-ex
27
The categories of this paper are: comp-gas
28
The categories of this paper are: alg-geom
35
The categories of this paper are: mtrl-th
5
The categories of this paper are: gr-qc
1
The categories of this paper are: cs
12
The categories of this paper are: nucl-th
9
The categories of this paper are: nlin