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Spin-dependent forces between quarks in hadrons

D. B. Lichtenberg
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Abstract

Different mechanisms have been proposed to account for the spin-dependent interaction between quarks in ground-state hadrons. The first mechanism is the chromomagnetic interaction arising from one-gluon exchange, a second mechanism is an interaction arising from meson exchange, and a third from instanton effects. Some lattice calculations favor the first mechanism for heavy quarks and the third for light quarks. An argument is presented in favor of the one-gluon exchange mechanism. However, thus far, nobody has performed a crucial experiment that can definitively distinguish between these mechanisms.

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D. B. Lichtenberg. 1998-10-26. Spin-dependent forces between quarks in hadrons. https://arxiv.org/abs/hep-ph/9810483

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