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Spin effects in heavy quarkonia

L. Motyka·K. Zalewski
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Abstract

A model based on a nonrelativistic potential supplemented by spin dependent terms of the Breit-Fermi type is described. This model reproduces the known masses of the $\bar{b}b$ quarkonia within 1MeV and the known masses of the $\bar{c}c$ quarkonia within 5MeV. Many predictions are made, some of them, e.g. for the fine splittings of the high $L$ states of the $\bar{b}b$ quarkonia and of the mass spectrum of the $\bar{b}c$ quarkonia, significantly different from previous predictions made by other authors.

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L. Motyka, K. Zalewski. 1998-03-24. Spin effects in heavy quarkonia. https://arxiv.org/abs/hep-ph/9803436

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