出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We analyze the overlap of color-octet meson operators with the ¡ and the hb and their 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.
