1998/02/23 by Eugene Golowich, Alexey A. Petrov · 1 citation
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex #hep-lat #hep-ph
paper · pdf · doi:10.1016/s0370-2693(98)00329-3
published as Phys.Lett. B427 (1998) 172-178 · 9 pages, 3 figures, RevTeX, Shortened version for publication, (lighter resonances included and 0+ contributions dropped)
arxiv created 1998/02/23 · openalex publication_date 1998/05/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We study the contributions of resonances to D0−D̄0 mixing. Both QQ̄ and hybrid QQ̄G states are considered. Assuming reasonable values for the resonance parameters, we find relatively sizeable individual contributions to both ΔmD and ΔΓD. We derive a variant of the GIM cancellation mechanism for the resonance amplitudes and show that broken SU(3) can allow for appreciable residual effects. Additional input from meson spectroscopy and lattice gauge simulations will be needed to improve the accuracy of these predictions.