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Paper detail

Beyond the Adiabatic Approximation: the impact of thresholds on the hadronic spectrum

In the adiabatic approximation, most of the effects of quark-antiquark loops on spectroscopy can be absorbed into a static interquark potential. I develop a formalism which can be used to treat the residual nonadiabatic effects associated with the presence of nearby hadronic thresholds for heavy quarks. I then define a potential which includes additional high energy corrections to the adiabatic limit which would be present for finite quark masses. This "improved" potential allows a systematic low energy expansion of the impact of thresholds on hadronic spectra.

preprint1999arXivOpen access
Nathan Isgur
hep-phnucl-th
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Nathan Isgur

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