Multichannel Calculation of D_s^* Vector States and the D_sJ⁺(2632) Resonance

We study bound states below threshold and resonances above threshold in the D⁰K⁺ and D_s⁺η systems, using a many-coupled-channel model for nonexotic meson-meson scattering applied to states with the quantum numbers of cs̅ quark-antiquark vector mesons. We fit the ground state at 2.112 GeV, whence the lowest resonances in D⁰K⁺ come out at 2.61, 2.72, 3.03, and 3.08 GeV. The resonance at 2.61 GeV acquires a width of about 8 MeV, while its partial P wave cross section is up to 6 times larger in D_sη than in D⁰K⁺, provided a mechanism accounting for Okubo-Zweig-Iizuka–forbidden decays is included. The latter finding is in agreement with the observations of the SELEX Collaboration with respect to the recently reported D_sJ⁺(2632) resonance. Therefore, we conclude that the D_sJ⁺(2632) is probably the first recurrence of the D_s^*(2112) meson.