4.7 Article

Decay processes of a pseudoscalar D(2900)

Journal

PHYSICAL REVIEW D
Volume 104, Issue 11, Pages -

Publisher

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.104.116002

Keywords

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Funding

  1. Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [2020/006768, 2019/17149-3, 2019/16924-3]
  2. Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) [305526/2019-7, 303945/2019-2]

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The study investigates the decay properties of a D(2900) state and identifies D-s0* (2317)(K) over bar as the most favorable decay channel. The findings aim to aid future experimental investigations of charm mesons around 3000 MeV.
We study the decay properties of a D(2900) state, with spin parity 0(-), whose existence was proposed in an earlier study of the DK (K) over bar 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*(K) over bar and D-s0* (2317)(K) over bar. It turns out that decay width to the last one is the largest, making the D-s(0)* (2317)(K) over bar 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.

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