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arXiv · 0809.2582

Charmonium in lattice QCD and the non-relativistic quark-model

Jozef J. Dudek·Ermal Rrapaj
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Abstract

We compare the results of a numerical lattice QCD calculation of the charmonium spectrum with the structure of a general non-relativistic potential model. To achieve this we form the non-relativistic reduction of derivative-based fermion bilinear interpolating fields used in lattice QCD calculations and compute their overlap with c-cbar meson states at rest constructed in the non-relativistic quark model, providing a bound-state model interpretation for the lattice data. Essential gluonic components in the bound-states, usually called hybrids, are identified by considering interpolating fields that involve the gluonic field-strength tensor and which have zero overlap onto simple c-cbar model states.

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Jozef J. Dudek, Ermal Rrapaj. 2008-09-15. Charmonium in lattice QCD and the non-relativistic quark-model. https://doi.org/10.1103/physrevd.78.094504

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