Couplings of hybrid operators to ground and excited states of bottomonia

2007/01/31 by Tommy Burch, Christian Ehmann
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Quantum chaos and dynamical systems #Quantum optics and atomic interactions #hep-lat

paper · pdf · doi:10.1016/j.nuclphysa.2007.09.005

published as Nucl.Phys.A797:33-49,2007 · 24 pages, 15 figures, references added, typos fixed, further analysis added

arxiv created 2007/08/25 · openalex publication_date 2007/09/26 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We analyze the overlap of local color-octet meson operators with the Υ and the η_b and their low-lying excited states, especially the first radial excitations. Our analysis is based on NRQCD and includes all terms up to order v⁴. We use a variety of source and sink operators as a basis for the variational method, which enables us to clearly separate the mass eigenstates and hence to extract the desired amplitudes. The results show the usefulness of the variational method for determining couplings to excited hadronic states.

Citations

• Measuring the deviation of the 2–3 lepton mixing from maximal with atmospheric neutrinos
• Excited hadrons on the lattice: Mesons