2004/07/31 by Eef van Beveren, George Rupp · 3 citations
Physics and Astronomy · #Bound state #High-Energy Particle Collisions Research #Meson #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Resonance (particle physics) #Scattering #hep-ph
paper · pdf · doi:10.1103/physrevlett.93.202001
published as Phys.Rev.Lett.93:202001,2004 · 11 pages, 6 figures; v2: Significant improvements for threshold behavior, and for the hadronic widths by including additional two-meson channels. Misprints in formulas corrected
arxiv created 2004/08/04 · openalex publication_date 2004/11/11 · arxiv updated 2009/12/01 · openalex created_date 2021/04/13 · openalex updated_date 2026/08/05
We study bound states below threshold and resonances above threshold in the D0K+ and D(+)(s)eta systems, using a many-coupled-channel model for nonexotic meson-meson scattering applied to states with the quantum numbers of cs 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(s)eta 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.