Investigation of the overlap of excited bottomonium states with hybrid operators

Details Investigation of the overlap of excited bottomonium states with hybrid operators Investigation of the overlap of excited bottomonium states with hybrid operators

2006-09-19

arxiv.org/abs/hep-lat/0609028v2

PoSLAT2006:106,2006

Physics

High Energy Physics

High Energy Physics - Lattice

7 pages, 4 figures, poster presented at Lattice 2006 (Hadronic Interactions and Structure)

Scientific paper

We analyze the overlap of color-octet meson operators with the $\Upsilon$ and the $\eta_b$ and their excited states, especially the first radial excitations. Our analysis is based on NRQCD and includes all terms up to order $v^4$. 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.

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