LAUSR

We study the decay properties of a D(2900) state, with spin-parity 0−, whose existence was proposed in an earlier study of the DKK̄ 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 f0(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∗π, D∗ sK̄ and D ∗ s0(2317)K̄. It turns out that decay width to the last one is the largest, making the D∗ s0(2317)K̄ 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. ∗ E-mail: [email protected] † E-mail: [email protected] ‡ E-mail: [email protected] 1 ar X iv :2 10 7. 03 49 6v 1 [ he pph ] 7 J ul 2 02 1