Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Decay processes of a pseudoscalar $D(2900)$   We study the decay properties of a $D(2900)$ state, with spin-parity $0^-$,
whose existence was proposed in an earlier study of the $D K\bar K$ and coupled
channel system. It was found in the former work that a $D$-meson appears with a
mass of about 2900 MeV from the three-body dynamics while the charmless
subsystem of the pseudoscalar mesons forms the $f_0(980)$ resonance. Motivated
by the recent experimental investigations of $D$-mesons around 3000 MeV, we now
study the two-body decays of $D(2900)$. We find that the nature of the said
state sets the main decay channels to be $D^*\pi$, $D^{*}_s \bar K$ and
$D^*_{s0}(2317)\bar K$. It turns out that decay width to the last one is the
largest, making the $D^*_{s0}(2317)\bar K$ system to be the most favorable one
to look for a signal of $D(2900)$. We compare the decay properties of our state
with those of the $D$-meson states, proposed within quark models, near 3000
MeV. We hope that our findings and discussions can be useful for the future
experimental investigations of charm mesons around 3000 MeV.

4
The categories of this paper are: cond-mat
8
The categories of this paper are: hep-ex
17
The categories of this paper are: q-fin
34
The categories of this paper are: chem-ph
5
The categories of this paper are: gr-qc
10
The categories of this paper are: q-bio
32
The categories of this paper are: atom-ph
26
The categories of this paper are: bayes-an
28
The categories of this paper are: alg-geom
37
The categories of this paper are: supr-con
24
The categories of this paper are: dg-ga
9
The categories of this paper are: nlin
33
The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg
21
The categories of this paper are: adap-org
19
The categories of this paper are: eess