Heavy quarkonia
classification
✦ hep-ph
keywords
approachesheavypredictionsquarkoniaacceptableaccurateamazinglycombining
read the original abstract
Two complementary approaches to the theory of heavy quarkonia are discussed. The nonrelativistic potential models give amazingly accurate predictions, but lack a theoretical justification. The expansion in powers of $v/c$ is theoretically very acceptable, but is not as good in giving numerical predictions. The importance of combining these two approaches is stressed.
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