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

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

1999-01-13

arxiv.org/abs/nucl-th/9901032v2

Phys.Rev. D60 (1999) 054013

Physics

Nuclear Physics

Nuclear Theory

16 pages, a more rapidly converging "improved potential" is defined

Scientific paper

10.1103/PhysRevD.60.054013

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.

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