Bottomonium in a Bethe-Salpeter-equation study

Physical review D: Particles and fields 09/2011; 84. DOI: 10.1103/PhysRevD.84.096014
Source: arXiv

ABSTRACT Using a well-established effective interaction in a rainbow-ladder truncation
model of QCD, we fix the remaining model parameter to the bottomonium
ground-state spectrum in a covariant Bethe-Salpeter equation approach and find
surprisingly good agreement with the available experimental data including the
2^{--} Upsilon(1D) state. Furthermore, we investigate the consequences of such
a fit for charmonium and light-quark ground states.

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